/* =============================================================
   NCGraph — landing page stylesheet
   -------------------------------------------------------------
   Organization:
     1. Design tokens (CSS custom properties)
     2. Resets & base
     3. Layout primitives (container, section)
     4. Buttons, chips, eyebrow
     5. Navbar
     6. Hero
     7. Features
     8. Demo
     9. CTA
    10. Footer
    11. Responsive overrides
   ============================================================= */

/* 1. Design tokens --------------------------------------------- */
:root {
  --color-bg: #0b0f17;
  --color-bg-elev: #10151f;
  --color-bg-soft: #141a26;
  --color-surface: #ffffff;
  --color-text: #e7ecf3;
  --color-text-muted: #9aa4b2;
  --color-text-strong: #ffffff;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);

  --color-brand: #7cc4ff;
  --color-brand-2: #5b6cff;
  --color-brand-soft: rgba(124, 196, 255, 0.12);

  --color-success: #4ade80;
  --color-warning: #fbbf24;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 30px 60px rgba(0, 0, 0, 0.45);

  --container-max: 1160px;
  /* Vertical rhythm between sections on the landing page. Kept compact so
     the page reads as one flow rather than a stack of tall chapters. */
  --section-pad-y: clamp(40px, 5vw, 72px);

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
    monospace;
}

/* 2. Resets & base -------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.page {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: radial-gradient(
      1200px 600px at 80% -10%,
      rgba(91, 108, 255, 0.18),
      transparent 60%
    ),
    radial-gradient(
      900px 500px at -10% 10%,
      rgba(124, 196, 255, 0.12),
      transparent 60%
    ),
    var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-brand);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  color: var(--color-text-strong);
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}
h2 {
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  font-weight: 700;
}
h3 {
  font-size: 1.15rem;
  font-weight: 600;
}
p {
  margin: 0 0 1em;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.page__main {
  display: block;
}

/* 3. Layout primitives ---------------------------------------- */
.container {
  width: min(100% - 2.5rem, var(--container-max));
  margin-inline: auto;
}

.section {
  padding-block: var(--section-pad-y);
}

.section__header {
  max-width: 720px;
  margin: 0 auto 2rem;
  text-align: center;
}

.section__title {
  margin-bottom: 0.5rem;
}

.section__lead {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brand);
  background: var(--color-brand-soft);
  border: 1px solid rgba(124, 196, 255, 0.2);
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

/* 4. Buttons, chips ------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.2s ease, border-color 0.2s ease,
    color 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}
.btn--lg {
  padding: 0.85rem 1.3rem;
  font-size: 1rem;
}
.btn--primary {
  background: linear-gradient(135deg, var(--color-brand), var(--color-brand-2));
  color: #0b0f17;
  box-shadow: 0 8px 24px rgba(91, 108, 255, 0.35);
}
.btn--primary:hover {
  box-shadow: 0 10px 30px rgba(91, 108, 255, 0.45);
}
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.28);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  font-size: 0.78rem;
  color: var(--color-text);
  font-family: var(--font-mono);
}
.chip--muted {
  color: var(--color-text-muted);
}

/* 5. Navbar --------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(11, 15, 23, 0.72);
  border-bottom: 1px solid var(--color-border);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 1rem;
}
.navbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text-strong);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.navbar__brand:hover {
  text-decoration: none;
}
.navbar__name {
  font-size: 1.05rem;
}
.navbar__logo {
  display: inline-flex;
}
.navbar__logo img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  display: block;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.navbar__auth-form {
  margin: 0;
}
.navbar__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.25rem;
}
.navbar__links a {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.navbar__links a:hover {
  color: var(--color-text-strong);
  text-decoration: none;
}

/* Global flash messages */
.flash {
  margin-top: 1rem;
}
.flash__item {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elev);
  color: var(--color-text);
  padding: 0.7rem 0.9rem;
  margin-bottom: 0.6rem;
}
.flash__item--success {
  border-color: rgba(74, 222, 128, 0.45);
  background: rgba(74, 222, 128, 0.1);
}
.flash__item--error {
  border-color: rgba(239, 68, 68, 0.45);
  background: rgba(239, 68, 68, 0.1);
}

.navbar__toggle,
.navbar__toggle-input {
  display: none;
}

/* 6. Hero ----------------------------------------------------- */
.hero {
  padding-top: clamp(48px, 6vw, 88px);
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero__title {
  margin-bottom: 1rem;
}
.hero__lead {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 48ch;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}
.hero__bullets {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}
.hero__bullets li {
  position: relative;
  padding-left: 1.1rem;
}
.hero__bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(124, 196, 255, 0.18);
}

.hero__visual {
  position: relative;
}
.hero__panel {
  background: linear-gradient(
    180deg,
    var(--color-bg-elev),
    var(--color-bg-soft)
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.hero__panel-bar {
  display: flex;
  gap: 0.4rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02);
}
.hero__panel-bar span {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
}
.hero__panel-body {
  position: relative;
  aspect-ratio: 16 / 9;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.05) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  mask-image: radial-gradient(
    ellipse at center,
    black 60%,
    transparent 100%
  );
}
.hero__path {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* 7. Features ------------------------------------------------- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.feature-card {
  position: relative;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    180deg,
    var(--color-bg-elev),
    var(--color-bg-soft)
  );
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  min-height: 220px;
}
.feature-card__icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--color-brand-soft);
  color: var(--color-brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.1rem;
}
.feature-card__title {
  margin-bottom: 0.4rem;
}
.feature-card__body {
  color: var(--color-text-muted);
  margin: 0;
}
.feature-card__status {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-muted);
}
.feature-card__status[data-state="available"] {
  color: var(--color-success);
  border-color: rgba(74, 222, 128, 0.35);
  background: rgba(74, 222, 128, 0.08);
}
.feature-card__status[data-state="planned"] {
  color: var(--color-warning);
  border-color: rgba(251, 191, 36, 0.3);
  background: rgba(251, 191, 36, 0.08);
}

/* 8. Demo ----------------------------------------------------- */
.demo__inner {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3rem;
  align-items: center;
}
.demo__bullets {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: grid;
  gap: 0.6rem;
  color: var(--color-text-muted);
}
.demo__bullets strong {
  color: var(--color-text-strong);
  font-weight: 600;
  margin-right: 0.25rem;
}

.demo__viewer {
  background: linear-gradient(
    180deg,
    var(--color-bg-elev),
    var(--color-bg-soft)
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.demo__viewer-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
}
.demo__viewer-tools {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.demo__viewer-file {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}
.demo__viewer-canvas {
  position: relative;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(
      600px 240px at 50% 30%,
      rgba(124, 196, 255, 0.08),
      transparent 70%
    ),
    var(--color-bg);
}
.demo__viewer-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.04) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(
    ellipse at center,
    black 65%,
    transparent 100%
  );
}
.demo__viewer-canvas svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.demo__viewer-footer {
  display: flex;
  gap: 1.25rem;
  justify-content: flex-end;
  padding: 0.6rem 1rem;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-muted);
}
.demo__promos {
  margin-top: clamp(1.25rem, 2.2vw, 2rem);
}

/* 8b. Promos (Measure + API spotlights) ----------------------- */
.promos__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.promo-card {
  position: relative;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    180deg,
    var(--color-bg-elev),
    var(--color-bg-soft)
  );
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.promo-card::before {
  /* Subtle brand outline that echoes the CTA panel without the full glow. */
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(124, 196, 255, 0.25),
    rgba(91, 108, 255, 0.15)
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  padding: 1px;
  pointer-events: none;
  opacity: 0.5;
}
.promo-card__header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  /* Leave room for the absolutely-positioned "Planned" badge (top-right). */
  padding-right: 4.5rem;
}
.promo-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-brand-soft);
  color: var(--color-brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.promo-card__title {
  margin: 0;
  font-size: 1.35rem;
}
.promo-card__lead {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 1rem;
}
.promo-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
  color: var(--color-text);
}
.promo-card__list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--color-text);
}
.promo-card__list li::before {
  /* Checkmark glyph to convey concrete capability, not a generic bullet. */
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 0.8rem;
  height: 0.45rem;
  border-left: 2px solid var(--color-brand);
  border-bottom: 2px solid var(--color-brand);
  transform: rotate(-45deg);
}

/* 9. CTA ------------------------------------------------------ */
.cta__panel {
  position: relative;
  padding: clamp(2rem, 4vw, 3.5rem);
  border-radius: var(--radius-xl);
  background: linear-gradient(
      135deg,
      rgba(124, 196, 255, 0.08),
      rgba(91, 108, 255, 0.08)
    ),
    var(--color-bg-elev);
  border: 1px solid var(--color-border-strong);
  text-align: center;
  overflow: hidden;
}
.cta__panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(124, 196, 255, 0.35),
    rgba(91, 108, 255, 0.35)
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  padding: 1px;
  pointer-events: none;
}
.cta__title {
  margin-bottom: 0.5rem;
}
.cta__lead {
  color: var(--color-text-muted);
  max-width: 58ch;
  margin-inline: auto;
}
.cta__actions {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

/* Auth pages */
.auth__container {
  max-width: 560px;
}
.auth-card {
  background: linear-gradient(
    180deg,
    var(--color-bg-elev),
    var(--color-bg-soft)
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: clamp(1.25rem, 2vw, 2rem);
}
.auth-card__header {
  margin-bottom: 1rem;
}
.auth-card__title {
  margin-top: 0;
  font-size: clamp(1.6rem, 2.4vw, 2rem);
}
.auth-card__lead,
.auth-card__content {
  color: var(--color-text-muted);
}
.auth-card__library-notice {
  margin: 0.9rem 0 0;
  padding: 0.65rem 0.8rem;
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--color-warning, #fbbf24);
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.28);
  border-radius: var(--radius-md);
}
.auth-form {
  display: grid;
  gap: 0.9rem;
}
.auth-form__field {
  display: grid;
  gap: 0.35rem;
}
.auth-form__field label {
  font-size: 0.88rem;
  color: var(--color-text);
}
.auth-form__field input {
  width: 100%;
  height: 2.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text);
  padding: 0 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
}
.auth-form__field input:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 1px;
}
.auth-form__error {
  margin: 0;
  color: #ff8b6b;
  font-size: 0.82rem;
}
.auth-card__divider {
  position: relative;
  text-align: center;
  margin: 1rem 0;
}
.auth-card__divider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  border-top: 1px solid var(--color-border);
}
.auth-card__divider span {
  position: relative;
  background: var(--color-bg-soft);
  padding: 0 0.6rem;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}
.auth-card__google {
  width: 100%;
}
.auth-card__meta {
  margin-top: 1rem;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

/* NC Library — sit closer under the site header (default .section has large --section-pad-y) */
section.section.library {
  padding-top: clamp(0.65rem, 2.2vw, 1.1rem);
  padding-bottom: var(--section-pad-y);
}
.library-topbar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: stretch;
  margin-bottom: 1rem;
}
.library-topbar__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
  justify-content: flex-start;
}
.library-topbar__title {
  margin: 0;
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.library-topbar__lead {
  margin: 0.35rem 0 0;
  color: var(--color-text-muted);
}
.library-login-warning {
  margin: 0.1rem 0 0.85rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid rgba(251, 191, 36, 0.35);
  border-radius: var(--radius-md);
  background: rgba(251, 191, 36, 0.09);
  color: #f9dd89;
  box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.08);
}
.library-login-warning__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.45;
}
.library-login-warning__actions {
  margin-top: 0.65rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.library-login-warning.is-highlight {
  animation: library-warning-glow 0.9s ease;
}
@keyframes library-warning-glow {
  0% {
    background: rgba(251, 191, 36, 0.09);
  }
  50% {
    background: rgba(251, 191, 36, 0.18);
  }
  100% {
    background: rgba(251, 191, 36, 0.09);
  }
}
.library-topbar__search,
.library-topbar__upload {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  min-width: 0;
  flex: 1 1 300px;
}
.library-topbar__search {
  max-width: 560px;
}
.library-topbar input[type="text"] {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text);
  min-height: 2.5rem;
  height: 2.5rem;
  padding: 0 0.7rem;
  flex: 1 1 auto;
  min-width: 0;
}
.library-topbar__search .btn {
  height: 2.5rem;
  min-height: 2.5rem;
  padding-inline: 0.95rem;
  line-height: 1;
  box-sizing: border-box;
}
/* One primary control: <label> opens file picker, change submits the form (see members_area script) */
.library-topbar__upload {
  min-width: 0;
  flex: 1.1 1 360px;
  position: relative;
  border: 1px solid rgba(124, 196, 255, 0.2);
  border-radius: var(--radius-md);
  background: linear-gradient(165deg, rgba(0, 0, 0, 0.22), rgba(0, 0, 0, 0.08));
  padding: 0.5rem 0.7rem 0.5rem 0.5rem;
  box-sizing: border-box;
  align-items: center;
  gap: 0.6rem;
}
.library-upload-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.8rem;
  min-width: 0;
  flex: 1 1 auto;
}
/* Same look as .btn--primary, but text must stay dark: parent bar uses --color-text (light), so
   we set color here — do not use color: inherit (that made the label look “white on brand”). */
.library-upload-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  height: 2.4rem;
  padding: 0 0.95rem;
  font-size: 0.86rem;
  line-height: 1;
  font-weight: 600;
  color: #0b0f17;
  background: linear-gradient(135deg, var(--color-brand), var(--color-brand-2));
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 16px rgba(91, 108, 255, 0.25);
  flex-shrink: 0;
  margin: 0;
  cursor: pointer;
  text-decoration: none;
  -webkit-font-smoothing: antialiased;
}
.library-upload-label:hover {
  color: #050a12;
  box-shadow: 0 6px 22px rgba(91, 108, 255, 0.38);
  filter: brightness(1.04);
  transform: none;
}
.library-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
}
.library-file-name {
  flex: 1 1 180px;
  min-width: 0;
  font-size: 0.86rem;
  line-height: 1.3;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.library-file-name:empty {
  display: none;
}
.library-topbar__upload.is-uploading {
  pointer-events: none;
  opacity: 0.95;
}
.library-topbar__upload.is-uploading .library-upload-label {
  position: relative;
  padding-right: 2.2rem;
}
.library-topbar__upload.is-uploading .library-upload-label::after {
  content: "";
  position: absolute;
  right: 0.6rem;
  top: 50%;
  width: 0.85rem;
  height: 0.85rem;
  margin-top: -0.42rem;
  border: 2px solid rgba(11, 15, 23, 0.2);
  border-top-color: #0b0f17;
  border-radius: 50%;
  animation: library-upload-spin 0.7s linear infinite;
}
@keyframes library-upload-spin {
  to {
    transform: rotate(360deg);
  }
}
.library-layout {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  align-items: start;
  gap: 1rem;
}
.library-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.library-list,
.library-details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--color-bg-elev), var(--color-bg-soft));
  padding: 1rem;
  min-width: 0;
}
.library-list {
  min-height: 8rem;
}
.library-list-empty {
  text-align: center;
  padding: 1.5rem 1.25rem 1.25rem;
  max-width: 24rem;
  margin: 0 auto;
}
.library-list-empty__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.2rem;
  height: 2.25rem;
  margin: 0 auto 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-brand);
  background: rgba(255, 255, 255, 0.03);
}
.library-list-empty__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text-strong);
  letter-spacing: 0.02em;
}
.library-list-empty__lead {
  margin: 0.45rem 0 0;
  font-size: 0.95rem;
  color: var(--color-text);
}
.library-list-empty__hint {
  margin: 0.9rem 0 0;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}
.library-item__meta-sep,
.library-item__meta-label {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.library-item__meta .library-item__meta-label {
  margin-right: 0.25rem;
  font-size: 0.85rem;
  font-weight: 500;
}
.library-item {
  position: relative;
  border: 1px solid var(--color-border);
  border-left: 3px solid transparent;
  border-radius: var(--radius-md);
  padding: 0.75rem 4rem 0.7rem 0.75rem;
  margin-bottom: 0.75rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.2s ease;
  cursor: pointer;
}
.library-item--clickable:hover:not(.is-active) {
  border-color: rgba(124, 196, 255, 0.5);
  background: linear-gradient(150deg, rgba(124, 196, 255, 0.12), rgba(80, 140, 200, 0.06) 40%, rgba(255, 255, 255, 0.04) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 0 0 1px rgba(124, 196, 255, 0.28),
    0 10px 32px rgba(0, 0, 0, 0.22),
    0 0 36px -4px rgba(124, 196, 255, 0.35);
  transform: translateY(-1px);
}
.library-item.is-active {
  border-color: rgba(124, 196, 255, 0.65);
  border-left-color: rgba(124, 196, 255, 0.9);
  background: linear-gradient(145deg, rgba(124, 196, 255, 0.14), rgba(124, 196, 255, 0.05));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 0 0 1px rgba(124, 196, 255, 0.2),
    0 0 20px -4px rgba(124, 196, 255, 0.28);
  transform: none;
}
.library-item--clickable.is-active:hover {
  border-color: rgba(150, 210, 255, 0.58);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 0 0 1px rgba(150, 210, 255, 0.28),
    0 8px 30px rgba(0, 0, 0, 0.18),
    0 0 28px -2px rgba(140, 200, 255, 0.32);
}
.library-item__select {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: transparent;
  cursor: pointer;
}
.library-item__select:focus-visible {
  outline: 2px solid rgba(124, 196, 255, 0.85);
  outline-offset: 2px;
}
.library-item--clickable:focus-within {
  z-index: 0;
}
.library-item__body {
  position: relative;
  z-index: 1;
  pointer-events: none;
  max-width: 100%;
  min-width: 0;
}
.library-item--empty {
  border-style: dashed;
}
.library-item__thumb {
  width: 100%;
  max-width: 100%;
  min-height: 2.1rem;
  min-width: 0;
  box-sizing: border-box;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: block;
  padding: 0.4rem 0.55rem;
  margin-bottom: 0.4rem;
  background: rgba(0, 0, 0, 0.18);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.2;
  font-weight: 600;
  color: var(--color-text-strong);
  letter-spacing: 0.01em;
}
.library-item__file-label {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: #e4f1ff;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-shadow: 0 0 18px rgba(124, 196, 255, 0.22);
}
.library-item__meta {
  margin: 0.3rem 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.library-item__delete {
  position: absolute;
  right: 0.45rem;
  bottom: 0.4rem;
  z-index: 2;
  margin: 0;
  transition: opacity 0.16s ease;
  pointer-events: auto;
}
/* Delete hidden until row hover; touch: always show */
@media (hover: hover) and (pointer: fine) {
  .library-item--clickable .library-item__delete {
    opacity: 0;
  }
  .library-item--clickable:hover .library-item__delete,
  .library-item--clickable:focus-within .library-item__delete {
    opacity: 1;
  }
}
@media (hover: none), (pointer: coarse) {
  .library-item--clickable .library-item__delete {
    opacity: 1;
  }
}
.library-empty__title {
  margin: 0;
}
.library-empty__lead {
  margin: 0.45rem 0 0;
  color: var(--color-text-muted);
}
.library-details {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding-bottom: 0.4rem;
}
.library-details__title {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-strong);
  max-width: 100%;
  padding-bottom: 0.2rem;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.library-details__preview {
  margin: 0.1rem 0 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.2);
  padding: 0.55rem 0.6rem;
  min-height: 9.5rem;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  flex: 0 0 auto;
}
.library-details__preview--hero {
  min-height: 15rem;
  margin-bottom: 0.3rem;
  margin-top: 0.1rem;
  padding: 0.75rem 0.8rem 0.8rem;
  background: radial-gradient(ellipse 110% 95% at 50% 35%, rgba(124, 196, 255, 0.2), rgba(0, 0, 0, 0.2) 52%),
    linear-gradient(180deg, rgba(124, 196, 255, 0.06), rgba(0, 0, 0, 0.12));
  box-shadow:
    inset 0 0 0 1px rgba(124, 196, 255, 0.12),
    0 4px 24px rgba(0, 0, 0, 0.2);
  flex: 0 0 auto;
}
.library-details__preview .library-details__svg,
.library-details__preview--hero .library-details__svg {
  display: block;
  width: 100%;
  max-height: 450px;
  height: auto;
}
@media (min-width: 56rem) {
  .library-details__preview--hero .library-details__svg {
    max-height: 550px;
  }
}
.library-details__meta {
  margin: 0.25rem 0 0.1rem;
  display: grid;
  gap: 0.4rem;
}
.library-details__meta div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.3rem;
}
.library-details__meta dt {
  color: var(--color-text-muted);
}
.library-details__meta dd,
.library-details__dd {
  margin: 0;
  color: var(--color-text-strong);
  font-family: var(--font-sans);
  text-align: right;
  max-width: 65%;
}
.library-details__meta dd.library-details__dd-mono,
.library-details__dd-mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--color-text-strong);
  text-align: right;
  max-width: 65%;
  margin: 0;
}
.library-details__empty-hint {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  line-height: 1.45;
  margin: 0.75rem 0 0;
  font-style: normal;
  font-weight: 400;
}
.library-details__empty {
  text-align: center;
  padding: 1.25rem 0.5rem 0.5rem;
}
.library-details__empty-kicker {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-strong);
  letter-spacing: 0.02em;
}
.library-details__empty-lead {
  margin: 0.4rem 0 0;
  font-size: 0.95rem;
  color: var(--color-text);
}
.library-details__empty .library-details__empty-hint {
  margin: 0.7rem 0 0;
}
.library-details__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.05rem;
  margin-bottom: 0;
  padding-top: 0.2rem;
  padding-bottom: 0;
  border-top: 1px solid var(--color-border);
}
.library-details__actions form {
  margin: 0;
}
.library-empty {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-text-muted);
}
.library-plan-hint {
  margin-top: 0.9rem;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}
.library-toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  z-index: 2000;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(74, 222, 128, 0.45);
  background: rgba(13, 20, 34, 0.96);
  color: #b7f7cc;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  max-width: min(90vw, 360px);
  text-align: center;
}
.is-disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: default;
}

/* Library: compact, perfectly aligned action rows (anchors + forms) */
.library-item__actions,
.library-item__delete,
.library-details__actions {
  align-items: center;
}
.library-item__actions form,
.library-item__delete,
.library-details__actions form {
  display: inline-flex;
  align-items: center;
}
.library-item__actions .btn,
.library-item__actions button,
.library-item__delete .btn,
.library-item__delete button,
.library-details__actions .btn,
.library-details__actions button {
  min-height: 2.35rem;
  height: 2.35rem;
  padding: 0 0.85rem;
  font-size: 0.86rem;
  line-height: 1;
  box-sizing: border-box;
}
.library-item__actions .btn--primary,
.library-item__delete .btn--primary,
.library-details__actions .btn--primary {
  box-shadow: 0 4px 16px rgba(91, 108, 255, 0.22);
}
.library .btn:hover {
  /* Default .btn nudges on hover; in dense toolbars/rows it reads as misaligned */
  transform: none;
}

/* API docs page */
.api-docs {
  max-width: 1080px;
}
.api-docs__hero {
  padding: 1.2rem 1.3rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(700px 260px at 80% 10%, rgba(124, 196, 255, 0.12), transparent 70%),
    linear-gradient(180deg, var(--color-bg-elev), var(--color-bg-soft));
}
.api-docs__title {
  margin: 0 0 0.4rem;
  font-size: clamp(1.35rem, 2vw, 1.7rem);
}
.api-docs__lead {
  margin-bottom: 0.85rem;
}
.api-docs__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.api-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.34rem 0.62rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.02);
}
.api-docs__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}
.api-docs__card {
  background: linear-gradient(180deg, var(--color-bg-elev), var(--color-bg-soft));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.05rem 1.15rem;
  margin-top: 1rem;
}
.api-docs__grid .api-docs__card {
  margin-top: 0;
}
.api-status {
  margin: 0.7rem 0 0.35rem;
  font-size: 0.9rem;
}
.api-status--ok {
  color: #8af0b0;
}
.api-status--warn {
  color: #f8d27b;
}
.api-docs__token-box {
  margin-top: 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.7rem;
  background: rgba(255, 255, 255, 0.02);
}
.api-docs__token-label {
  margin: 0 0 0.45rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.api-docs__token {
  display: block;
  overflow-wrap: anywhere;
  font-size: 0.85rem;
}
.api-docs__copy-btn {
  margin-top: 0.6rem;
}
.api-docs__token-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}
.api-docs__icon-btn {
  min-width: 2.2rem;
  padding: 0 0.6rem;
  margin-top: 0.6rem;
}
.api-checks {
  margin: 0;
  padding-left: 1rem;
}
.api-checks li {
  margin: 0.32rem 0;
}
.api-endpoint-list {
  display: grid;
  gap: 0.52rem;
}
.api-endpoint {
  display: grid;
  grid-template-columns: auto 1.6fr 1fr;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.6rem;
  background: rgba(255, 255, 255, 0.02);
}
.api-endpoint > span:last-child {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}
.api-method {
  min-width: 56px;
  text-align: center;
  border-radius: 999px;
  padding: 0.16rem 0.48rem;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.06em;
}
.api-method--get {
  color: #8ad4ff;
  background: rgba(56, 189, 248, 0.18);
}
.api-method--post {
  color: #9af3b2;
  background: rgba(74, 222, 128, 0.18);
}
.api-method--patch {
  color: #f8d27b;
  background: rgba(251, 191, 36, 0.18);
}
.api-method--delete {
  color: #ffb0a1;
  background: rgba(248, 113, 113, 0.2);
}
.api-docs__card pre {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.22);
  color: var(--color-text);
}
.api-docs__muted {
  color: var(--color-text-muted);
  margin: 0;
}
.api-docs__card--wide {
  margin-top: 1rem;
}
.api-samples__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
}
.api-tabs {
  display: inline-flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}
.api-tab {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  height: 2rem;
  padding: 0 0.7rem;
  cursor: pointer;
}
.api-tab + .api-tab {
  border-left: 1px solid var(--color-border);
}
.api-tab.is-active {
  background: var(--color-brand-soft);
  color: var(--color-brand);
}
.api-tab-panel[hidden] {
  display: none;
}
.api-docs__downloads {
  margin-top: 0.8rem;
}
.api-docs__downloads .btn {
  width: auto;
}
.api-settings-card {
  margin-top: 1rem;
}
@media (max-width: 960px) {
  .api-docs__grid {
    grid-template-columns: 1fr;
  }
  .api-endpoint {
    grid-template-columns: auto 1fr;
  }
  .api-endpoint > span:last-child {
    grid-column: 1 / -1;
  }
  .api-docs__token-row {
    flex-wrap: wrap;
  }
  .api-docs__downloads .btn {
    width: 100%;
  }
}

/* Embedded NC viewer (no site chrome) */
.page--embed {
  background: var(--color-bg);
}
.page--embed .nc-workspace--embed {
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
  min-height: 100dvh;
}
.page--embed .nc-workspace__grid--embed .nc-workspace__side,
.page--embed .nc-workspace__grid--embed .nc-workspace__main {
  min-height: calc(100dvh - 1.2rem);
}
.page--embed .nc-workspace--embed > .container {
  height: calc(100dvh - 1.2rem);
  display: flex;
}
.page--embed .nc-workspace__embed-only {
  min-height: calc(100dvh - 1.2rem);
  width: 100%;
  display: flex;
}
.page--embed .nc-workspace__embed-only .nc-preview {
  height: 100%;
  display: flex;
  flex-direction: column;
  width: 100%;
}
.page--embed .nc-workspace__embed-only .nc-preview__canvas {
  height: auto;
  min-height: 320px;
  flex: 1 1 auto;
}
.library-item__actions .btn--primary:hover,
.library-item__delete .btn--primary:hover,
.library-details__actions .btn--primary:hover {
  box-shadow: 0 6px 18px rgba(91, 108, 255, 0.3);
}
.library-item__delete .btn {
  min-height: 2.1rem;
  height: 2.1rem;
  padding: 0 0.6rem;
  font-size: 0.84rem;
}

/* 10. Footer -------------------------------------------------- */
.footer {
  margin-top: 2rem;
  border-top: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.2);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 3rem;
  padding-block: 3rem;
}
.footer__name {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text-strong);
  margin-bottom: 0.4rem;
}
.footer__logo {
  display: inline-flex;
}
.footer__logo img {
  width: 22px;
  height: 22px;
  object-fit: contain;
  display: block;
}
.footer__tagline {
  color: var(--color-text-muted);
  max-width: 36ch;
}
.footer__columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer__col h4 {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  font-weight: 600;
}
.footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}
.footer__col a {
  color: var(--color-text);
}
.footer__col a:hover {
  color: var(--color-brand);
  text-decoration: none;
}
.footer__meta {
  display: flex;
  gap: 0.5rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

/* 11. Responsive --------------------------------------------- */
@media (max-width: 960px) {
  .library-topbar__controls {
    flex-direction: column;
    align-items: stretch;
  }
  .library-topbar__search,
  .library-topbar__upload {
    max-width: none;
  }
  .library-topbar__search input[type="text"] {
    width: 100%;
  }
  .library-topbar__upload {
    flex-direction: column;
    align-items: stretch;
  }
  .library-upload-label {
    width: 100%;
    justify-content: center;
  }
  .library-upload-row {
    flex-direction: column;
    align-items: stretch;
  }
  .library-file-name {
    text-align: center;
  }
  .library-layout {
    grid-template-columns: 1fr;
  }
  .hero__inner,
  .demo__inner {
    grid-template-columns: 1fr;
  }
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .promos__grid {
    grid-template-columns: 1fr;
  }
  .footer__inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .navbar__nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--color-bg-elev);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease;
  }
  .navbar__links {
    flex-direction: column;
    gap: 0;
  }
  .navbar__links li {
    border-bottom: 1px solid var(--color-border);
  }
  .navbar__links a {
    display: block;
    padding: 0.9rem 0;
    color: var(--color-text);
  }
  .navbar__cta {
    margin-top: 0.75rem;
    align-self: flex-start;
  }
  .navbar__toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    cursor: pointer;
  }
  .navbar__toggle span {
    display: block;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform 0.15s ease, opacity 0.15s ease;
  }
  .navbar__toggle-input:checked ~ .navbar__nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .navbar__toggle-input:checked ~ .navbar__toggle span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }
  .navbar__toggle-input:checked ~ .navbar__toggle span:nth-child(2) {
    opacity: 0;
  }
  .navbar__toggle-input:checked ~ .navbar__toggle span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

  .features__grid {
    grid-template-columns: 1fr;
  }
  .footer__columns {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero__actions,
  .cta__actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    width: 100%;
  }
}

/* =============================================================
   NC View page
   ============================================================= */

/* Full-width mode: pages that need the entire viewport width (tools,
   workspaces, editors) opt in via <body class="page--wide">.

   The preview frame has a single authoritative size stored in
   `--nc-preview-h`. By default it's viewport-relative so the main tools
   (navbar + hero + workspace) fit in one screen and the footer sits
   just below the fold (accessible by scrolling). A safety floor keeps
   the frame usable on short windows; a ceiling prevents it from growing
   absurdly tall on 4K monitors. Override per-page with e.g.
   `style="--nc-preview-h: 720px;"` on <body> for a strictly fixed size. */
.page--wide {
  /* 260px offset covers: navbar (~60) + hero (~44) + workspace padding
     (~44) + panel padding (~40) + panel header+margin (~64) + safety.
     Tune this value if the navbar/hero change height. */
  --nc-preview-h: clamp(360px, calc(100dvh - 320px), 1000px);
}
.page--wide .container {
  width: 100%;
  max-width: none;
  padding-inline: clamp(1rem, 2.5vw, 2rem);
}

.nc-hero {
  padding-top: clamp(40px, 5vw, 64px);
  padding-bottom: 0;
}
.page--wide .nc-hero {
  padding-top: clamp(12px, 1.5vw, 20px);
  padding-bottom: 0;
  flex: 0 0 auto;
}
/* Compact one-line hero: eyebrow, title, and lead share a single row so the
   header takes as little vertical space as possible. It wraps gracefully on
   narrow viewports. */
.page--wide .nc-hero > .container {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}
.nc-hero__title {
  margin-top: 0.4rem;
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
}
.page--wide .nc-hero__title {
  margin: 0;
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  line-height: 1.2;
}
.nc-hero__lead {
  color: var(--color-text-muted);
  max-width: 70ch;
  font-size: 1rem;
}
.page--wide .nc-hero__lead {
  margin: 0;
  font-size: 0.85rem;
  max-width: none;
  flex: 1 1 auto;
  min-width: 0;
  /* Truncate the lead with an ellipsis if the row gets tight rather than
     wrapping onto a second line. It's just context copy, not critical. */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nc-workspace {
  padding-top: clamp(24px, 3vw, 40px);
  padding-bottom: clamp(40px, 5vw, 80px);
}
/* Full-width mode: workspace is allowed to size naturally to its content
   now that the preview frame is a fixed height. The row height is driven
   by the preview panel (the tallest natural child) and the sidebar
   stretches to the same row height, scrolling internally when its content
   overflows. This gives predictable, file-independent dimensions. */
.page--wide .nc-workspace {
  padding-top: clamp(14px, 1.5vw, 22px);
  padding-bottom: clamp(14px, 1.5vw, 22px);
}
.nc-workspace__grid {
  display: grid;
  grid-template-columns: minmax(360px, 420px) 1fr;
  gap: 1.5rem;
  align-items: start;
}
.page--wide .nc-workspace__grid {
  align-items: stretch;
  grid-template-rows: auto;
}
.nc-workspace__grid--share {
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  align-items: stretch;
}
.nc-workspace__grid--share .nc-workspace__side,
.nc-workspace__grid--share .nc-workspace__main {
  min-height: 0;
}
.nc-workspace__grid--share .nc-workspace__side {
  max-height: none;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 0.25rem;
}
.nc-workspace__grid--share .nc-workspace__side > .nc-panel,
.nc-workspace__grid--share .nc-workspace__main > .nc-panel {
  height: 100%;
}
.nc-workspace__grid--share .nc-workspace__main {
  display: flex;
}
.nc-workspace__grid--share .nc-workspace__main > .nc-preview {
  flex: 1 1 auto;
}
.nc-workspace__grid--share .nc-metadata {
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.nc-workspace__grid--share .nc-metadata .nc-meta,
.nc-workspace__grid--share .nc-metadata .nc-meta--extra {
  overflow: auto;
  min-height: 0;
}
.nc-workspace__grid--share .nc-metadata .nc-meta {
  flex: 1 1 auto;
}
.nc-workspace__side {
  display: grid;
  gap: 1.25rem;
  position: sticky;
  top: 88px;
}
/* Sidebar with internal scroll. It is no longer sticky (the workspace is
   always fully visible now that the preview is a fixed size) and it is
   bounded to the same height as the preview panel so the two columns line
   up and extra metadata scrolls inside the sidebar rather than growing
   the page. The bound tracks `--nc-preview-h` — the chrome offset covers
   the preview panel's header (~50px) + panel padding (~40px) + a small
   safety margin. */
.page--wide .nc-workspace__side {
  position: static;
  top: auto;
  max-height: calc(var(--nc-preview-h, 640px) + 104px);
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  align-content: start;
  /* Breathing room so the scrollbar doesn't sit flush against the
     metadata panel's right edge. */
  padding-right: 0.35rem;
  /* Firefox thin scrollbar styled with the panel palette. */
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
/* WebKit/Blink: matching compact scrollbar. */
.page--wide .nc-workspace__side::-webkit-scrollbar {
  width: 10px;
}
.page--wide .nc-workspace__side::-webkit-scrollbar-track {
  background: transparent;
}
.page--wide .nc-workspace__side::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
.page--wide .nc-workspace__side:hover::-webkit-scrollbar-thumb {
  background: var(--color-text-muted);
  background-clip: padding-box;
  border: 2px solid transparent;
}
/* Shared link page: override generic sidebar clamp so metadata can truly
   stretch to match preview panel height in the same row. */
.page--wide .nc-workspace__grid--share .nc-workspace__side {
  max-height: none;
  height: 100%;
  overflow: hidden;
  padding-right: 0;
}
.page--wide .nc-workspace__grid--share .nc-workspace__main {
  height: 100%;
}
.page--wide .nc-workspace__grid--share .nc-workspace__side,
.page--wide .nc-workspace__grid--share .nc-workspace__main {
  min-height: calc(var(--nc-preview-h, 640px) + 126px);
}
.page--wide .nc-workspace__grid--share .nc-workspace__side > .nc-metadata,
.page--wide .nc-workspace__grid--share .nc-workspace__main > .nc-preview {
  height: 100%;
}
.page--wide .nc-workspace__grid--share .nc-preview {
  display: flex;
  flex-direction: column;
}
.page--wide .nc-workspace__grid--share .nc-preview .nc-panel__header {
  margin-bottom: 1rem;
}
.page--wide .nc-workspace__grid--share .nc-measure__hint {
  margin-bottom: 0.65rem;
}
.page--wide .nc-workspace__grid--share .nc-preview__canvas {
  height: auto;
  min-height: 0;
  flex: 1 1 auto;
}
.page--wide .nc-workspace__grid--share .nc-metadata .nc-meta,
.page--wide .nc-workspace__grid--share .nc-metadata .nc-meta--extra {
  overflow-y: auto;
}
.nc-workspace__main {
  display: grid;
  gap: 1.25rem;
}
/* Preview column sizes to the preview panel's natural height. */
.page--wide .nc-workspace__main {
  min-height: 0;
}

/* --- shared panel look (upload / metadata / preview) ----------- */
.nc-panel {
  background: linear-gradient(
    180deg,
    var(--color-bg-elev),
    var(--color-bg-soft)
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}
.nc-panel__header {
  margin-bottom: 1.25rem;
}
.nc-panel__header--collapsible {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.9rem;
}
.nc-panel__collapse-btn {
  display: none;
  appearance: none;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.38rem 0.66rem;
  line-height: 1;
  flex: none;
}
.nc-panel__collapse-btn:hover {
  color: var(--color-text-strong);
  border-color: var(--color-border-strong);
  background: rgba(255, 255, 255, 0.04);
}
.nc-panel__collapse-btn:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}
.nc-panel__header--row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.nc-panel__title {
  margin: 0.35rem 0 0.3rem;
  font-size: 1.15rem;
}
.nc-panel__lead {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* --- upload ---------------------------------------------------- */
.nc-upload__form {
  display: grid;
  gap: 0.9rem;
}
.nc-upload__mode-switch {
  display: flex;
  align-items: stretch;
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}
.nc-upload__mode-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex: 1 1 0;
  padding: 0 0.85rem;
  height: 2rem;
  cursor: pointer;
  text-align: center;
}
.nc-upload__mode-btn + .nc-upload__mode-btn {
  border-left: 1px solid var(--color-border);
}
.nc-upload__mode-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text-strong);
}
.nc-upload__mode-btn.is-active {
  background: var(--color-brand-soft);
  color: var(--color-brand);
}
.nc-upload__manual {
  display: grid;
  gap: 0.45rem;
}
.nc-upload__sample {
  display: grid;
  gap: 0.45rem;
}
.nc-upload__manual-label {
  color: var(--color-text);
  font-size: 0.86rem;
  font-weight: 600;
}
.nc-upload__sample-label {
  color: var(--color-text);
  font-size: 0.86rem;
  font-weight: 600;
}
.nc-upload__textarea {
  width: 100%;
  min-height: 210px;
  resize: vertical;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  padding: 0.75rem 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.45;
}
.nc-upload__textarea:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 1px;
}
.nc-upload__sample-list {
  width: 100%;
  max-height: 168px;
  overflow: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02);
  padding: 0.25rem;
  display: grid;
  gap: 0.22rem;
}
.nc-upload__sample-list:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 1px;
}
.nc-upload__sample-item {
  appearance: none;
  border: 1px solid transparent;
  border-radius: calc(var(--radius-md) - 3px);
  background: transparent;
  color: var(--color-text);
  text-align: left;
  padding: 0.45rem 0.5rem;
  cursor: pointer;
  display: grid;
  gap: 0.1rem;
}
.nc-upload__sample-item:hover {
  border-color: var(--color-border);
  background: rgba(255, 255, 255, 0.04);
}
.nc-upload__sample-item.is-active {
  border-color: var(--color-brand);
  background: var(--color-brand-soft);
}
.nc-upload__sample-name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-strong);
}
.nc-upload__sample-caption {
  font-size: 0.73rem;
  color: var(--color-text-muted);
}
.nc-upload__manual-hint {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}
.nc-dropzone {
  position: relative;
  display: block;
  border: 1.5px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 1.75rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  background: rgba(255, 255, 255, 0.02);
}
.nc-dropzone:hover,
.nc-dropzone.is-drag {
  border-color: var(--color-brand);
  background: var(--color-brand-soft);
}
.nc-dropzone__input {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}
.nc-dropzone__icon {
  color: var(--color-brand);
  margin-bottom: 0.6rem;
}
.nc-dropzone__text {
  color: var(--color-text);
  font-weight: 500;
}
.nc-dropzone__text strong {
  color: var(--color-text-strong);
  font-weight: 600;
}
.nc-dropzone__hint {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
}

.nc-upload__selected {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-text);
}
.nc-upload__selected[hidden] {
  display: none;
}
.nc-upload__selected-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nc-upload__clear {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  line-height: 1;
  padding: 0 0.25rem;
}
.nc-upload__clear:hover {
  color: var(--color-text-strong);
}

.nc-upload__actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}
.nc-upload__status {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.nc-upload__status[data-level="error"] {
  color: #ff8b6b;
}
.nc-upload__status[data-level="ok"] {
  color: var(--color-success);
}
.nc-upload__status[data-level="busy"] {
  color: var(--color-brand);
}

/* --- metadata -------------------------------------------------- */
.nc-meta {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-border);
}
.nc-meta__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--color-border);
}
.nc-meta__row dt {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}
.nc-meta__row dd {
  margin: 0;
  color: var(--color-text-strong);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-align: right;
  overflow-wrap: anywhere;
}
.nc-meta--extra {
  margin-top: 1rem;
  border-top: 1px solid var(--color-border);
}
.nc-meta--extra[hidden] {
  display: none;
}
.nc-meta__format {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: var(--color-brand-soft);
  border: 1px solid rgba(124, 196, 255, 0.28);
  color: var(--color-brand);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  vertical-align: middle;
}
.nc-meta__format[hidden] {
  display: none;
}

/* --- preview --------------------------------------------------- */
.nc-preview {
  --nc-preview-outer: var(--color-brand);
  --nc-preview-inner: #a7b4ff;
  --nc-preview-hole: #ff8b6b;
  --nc-preview-slot: #ff8b6b;
  --nc-preview-marking: #ffd84d;
  --nc-preview-canvas-bg: var(--color-bg);
  --nc-preview-canvas-glow: rgba(124, 196, 255, 0.08);
  --nc-preview-canvas-grid: rgba(255, 255, 255, 0.04);
  --nc-preview-control-bg: rgba(255, 255, 255, 0.04);
  --nc-preview-control-hover: rgba(255, 255, 255, 0.06);
}
.nc-preview[data-nc-preview-theme="light"] {
  --nc-preview-outer: #2469d9;
  --nc-preview-inner: #6f85dc;
  --nc-preview-hole: #df5f3f;
  --nc-preview-slot: #df5f3f;
  --nc-preview-marking: #b87900;
  --nc-preview-canvas-bg: #f7faff;
  --nc-preview-canvas-glow: rgba(59, 130, 246, 0.14);
  --nc-preview-canvas-grid: rgba(31, 41, 55, 0.12);
  --nc-preview-control-bg: rgba(15, 23, 42, 0.04);
  --nc-preview-control-hover: rgba(15, 23, 42, 0.08);
}
.nc-preview[data-nc-preview-theme="dwg"] {
  /* DWG-like: light paper + monochrome black geometry. */
  --nc-preview-outer: #101010;
  --nc-preview-inner: #101010;
  --nc-preview-hole: #101010;
  --nc-preview-slot: #101010;
  --nc-preview-marking: #bb5a00;
  --nc-preview-canvas-bg: #ffffff;
  --nc-preview-canvas-glow: rgba(0, 0, 0, 0.02);
  --nc-preview-canvas-grid: rgba(0, 0, 0, 0.09);
  --nc-preview-control-bg: rgba(0, 0, 0, 0.03);
  --nc-preview-control-hover: rgba(0, 0, 0, 0.07);
}
.nc-preview__legend {
  display: flex;
  gap: 0.45rem;
  flex-wrap: nowrap;
  color: var(--color-text-muted);
  font-size: 0.74rem;
  font-family: var(--font-mono);
}
.nc-preview__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.nc-preview__legend-toggle {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  border-radius: var(--radius-sm);
  padding: 0.06rem 0.2rem;
  cursor: pointer;
}
.nc-preview__legend-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}
.nc-preview__legend-toggle.is-off {
  opacity: 0.45;
}
.nc-preview__legend-toggle:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 1px;
}
.swatch {
  display: inline-block;
  width: 14px;
  height: 4px;
  border-radius: 2px;
}
.swatch--outer {
  background: var(--nc-preview-outer);
}
.swatch--inner {
  background: repeating-linear-gradient(
    90deg,
    var(--nc-preview-inner) 0 4px,
    transparent 4px 8px
  );
}
.swatch--hole,
.swatch--slot {
  width: 12px;
  height: 8px;
  border-radius: 4px;
  background: var(--nc-preview-hole);
  opacity: 0.85;
}
.swatch--slot {
  width: 18px;
  border-radius: 999px;
  background: var(--nc-preview-slot);
}
.swatch--marking {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--nc-preview-marking);
  position: relative;
}
.swatch--marking::before,
.swatch--marking::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 1px;
  background: var(--nc-preview-marking);
  transform: translate(-50%, -50%);
}
.swatch--marking::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

/* In full-width mode the preview panel must grow to fill its grid cell so
   the canvas can in turn fill the remaining viewport height. */
/* Fixed preview frame: the canvas is pinned to a specific height so the
   preview never changes size from file to file or when the sidebar grows.
   The preview panel therefore sizes to its content (header + canvas). */
.page--wide .nc-preview {
  padding-bottom: 1rem;
}
.page--wide .nc-preview .nc-panel__header {
  margin-bottom: 0.75rem;
}
/* Keep preview command groups in one compact lane.
   If space gets tight, allow horizontal scroll instead of large gaps/wraps. */
.nc-preview .nc-panel__header--row {
  justify-content: flex-start;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
}
.nc-preview .nc-panel__header--row::-webkit-scrollbar {
  height: 8px;
}
.nc-preview .nc-panel__header--row > * {
  flex: 0 0 auto;
}
.nc-preview [data-nc-preview-file-name] {
  margin-bottom: 0;
  padding: 0.26rem 0.58rem;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.page--wide .nc-preview__canvas {
  /* Preview frame dimensions — change --nc-preview-h on <body> or a page
     to resize. Width is the grid column width. `min-height` is kept low
     so the clamp in --nc-preview-h can safely shrink the frame on short
     viewports without forcing page overflow. */
  height: var(--nc-preview-h, 640px);
  min-height: 320px;
  flex: none;
}

.nc-preview__canvas {
  position: relative;
  min-height: min(78vh, 900px);
  cursor: grab;
  touch-action: none;
  background:
    radial-gradient(
      800px 320px at 50% 20%,
      var(--nc-preview-canvas-glow),
      transparent 70%
    ),
    var(--nc-preview-canvas-bg);
  background-image:
    linear-gradient(var(--nc-preview-canvas-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--nc-preview-canvas-grid) 1px, transparent 1px);
  background-size: 28px 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.nc-preview__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
/* Keep strokes visually constant regardless of zoom level. This matters on
   the NC View page: without it, zooming in to see a tiny marking would make
   the contour lines bloated and detail would blur together. */
.nc-preview__svg :is(line, path, circle, rect) {
  vector-effect: non-scaling-stroke;
}
.nc-preview__behind-zone {
  fill: rgba(255, 216, 77, 0.13);
  stroke: rgba(255, 216, 77, 0.45);
  stroke-width: 0.9;
  stroke-dasharray: 4 2.6;
}
.nc-preview__behind-label-box {
  pointer-events: none;
}
.nc-preview__behind-label-bg {
  fill: rgba(16, 20, 32, 0.88);
  stroke: rgba(255, 216, 77, 0.45);
  stroke-width: 0.8;
}
.nc-preview__behind-label {
  fill: rgba(255, 216, 77, 0.95);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  paint-order: stroke fill;
  stroke: rgba(12, 18, 30, 0.78);
  stroke-width: 1px;
}
.nc-preview[data-nc-preview-theme="light"] .nc-preview__behind-zone {
  fill: rgba(184, 121, 0, 0.1);
  stroke: rgba(184, 121, 0, 0.45);
}
.nc-preview[data-nc-preview-theme="light"] .nc-preview__behind-label-bg {
  fill: rgba(255, 255, 255, 0.92);
  stroke: rgba(184, 121, 0, 0.5);
}
.nc-preview[data-nc-preview-theme="light"] .nc-preview__behind-label {
  fill: rgba(136, 89, 0, 0.95);
  stroke: rgba(255, 255, 255, 0.9);
}
.nc-preview[data-nc-preview-theme="dwg"] .nc-preview__outer path {
  stroke-width: 1.6px !important;
}
.nc-preview[data-nc-preview-theme="dwg"] .nc-preview__inner path,
.nc-preview[data-nc-preview-theme="dwg"] .nc-preview__holes circle,
.nc-preview[data-nc-preview-theme="dwg"] .nc-preview__slots rect,
.nc-preview[data-nc-preview-theme="dwg"] .nc-preview__markings :is(circle, line) {
  stroke-width: 1.2px !important;
}

/* Debug overlay: the gDebug group holds vertex markers. It's hidden unless
   the user toggles the Debug button in the preview toolbar. */
.nc-preview__debug {
  display: none;
}
.nc-preview__svg.is-debug .nc-preview__debug {
  display: inline;
}

/* In debug mode, override the production palette so each entity type is
   trivially distinguishable and mis-grouped geometry stands out. */
.nc-preview__svg.is-debug .nc-preview__outer {
  stroke: #2ecc71;
}
.nc-preview__svg.is-debug .nc-preview__inner {
  stroke: #e74c3c;
}
.nc-preview__svg.is-debug .nc-preview__holes {
  fill: #9b59b6;
  stroke: #9b59b6;
  fill-opacity: 0.45;
}
.nc-preview__svg.is-debug .nc-preview__slots {
  fill: #f1c40f;
  stroke: #f1c40f;
  fill-opacity: 0.4;
}
.nc-preview__svg.is-debug .nc-preview__markings {
  stroke: #1abc9c;
}
.nc-preview__empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  text-align: center;
  padding: 1rem;
}
.nc-preview__canvas.is-panning {
  cursor: grabbing;
}
.nc-preview__canvas[data-nc-measure-mode="h"],
.nc-preview__canvas[data-nc-measure-mode="v"],
.nc-preview__canvas[data-nc-measure-mode="r"] {
  cursor: crosshair;
}
.nc-preview__canvas:has(.nc-preview__empty) {
  cursor: default;
}
/* Prevent pan-drag from triggering text selection across the page. */
.nc-preview__canvas * {
  user-select: none;
  -webkit-user-select: none;
}

/* --- zoom toolbar (preview header) ----------------------------- */
.nc-preview__controls {
  display: inline-flex;
  align-items: stretch;
  gap: 0;
  background: var(--nc-preview-control-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.nc-measure__controls {
  display: inline-flex;
  align-items: stretch;
  gap: 0;
  background: var(--nc-preview-control-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.nc-zoom-btn,
.nc-zoom-level {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1;
  padding: 0 0.56rem;
  min-width: 2.1rem;
  height: 2.1rem;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nc-zoom-btn {
  font-size: 1.1rem;
  font-weight: 600;
}
.nc-zoom-btn + .nc-zoom-level,
.nc-zoom-level + .nc-zoom-btn {
  border-left: 1px solid var(--color-border);
}
.nc-zoom-btn:hover:not(:disabled),
.nc-zoom-level:hover:not(:disabled) {
  background: var(--nc-preview-control-hover);
  color: var(--color-text-strong);
}
.nc-zoom-level {
  min-width: 4rem;
  font-weight: 500;
  color: var(--color-text-muted);
}
.nc-zoom-level:hover:not(:disabled) {
  color: var(--color-brand);
}
.nc-zoom-btn:disabled,
.nc-zoom-level:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.nc-zoom-btn:focus-visible,
.nc-zoom-level:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: -2px;
}

.nc-debug-btn {
  appearance: none;
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0 0.85rem;
  height: 2.1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}
.nc-debug-btn:hover {
  background: var(--nc-preview-control-hover);
  color: var(--color-text-strong);
}
.nc-debug-btn.is-active {
  background: #ffd166;
  color: #1f1300;
  border-color: #ffd166;
}
.nc-debug-btn:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}
.nc-preview__icon-btn {
  appearance: none;
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nc-preview__icon-btn:hover {
  background: var(--nc-preview-control-hover);
  color: var(--color-text-strong);
}
.nc-preview__icon-btn:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
}
/* Explicit in-UI tooltips for preview controls. */
.nc-preview [data-tooltip] {
  position: relative;
}
@media (hover: hover) {
  .nc-preview [data-tooltip]:hover::after,
  .nc-preview [data-tooltip]:focus-visible::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 50%;
    bottom: calc(100% + 8px);
    transform: translateX(-50%);
    background: rgba(13, 20, 34, 0.96);
    color: #e5ebff;
    border: 1px solid rgba(124, 196, 255, 0.35);
    border-radius: 8px;
    padding: 0.3rem 0.45rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    line-height: 1.25;
    letter-spacing: 0.02em;
    white-space: nowrap;
    z-index: 30;
    pointer-events: none;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  }
}
.nc-share-popup {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 1200;
}
.nc-share-popup__card {
  width: min(560px, calc(100vw - 2rem));
  background: var(--color-bg-elev);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  padding: 1rem;
}
.nc-share-popup__title {
  font-weight: 700;
  color: var(--color-text-strong);
  margin-bottom: 0.35rem;
}
.nc-share-popup__lead {
  margin: 0 0 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}
.nc-share-popup__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  align-items: center;
}
.nc-share-popup__input {
  width: 100%;
  height: 2.3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text);
  padding: 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.nc-share-popup__copy,
.nc-share-popup__close {
  appearance: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  height: 2.3rem;
  padding: 0 0.85rem;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.nc-share-popup__copy:hover,
.nc-share-popup__close:hover {
  background: var(--nc-preview-control-hover);
}
.nc-share-popup__meta {
  margin-top: 0.55rem;
  color: var(--color-text-muted);
  font-size: 0.78rem;
}
.nc-share-popup__close {
  margin-top: 0.7rem;
}
.nc-measure-btn,
.nc-measure-clear {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1;
  min-width: 2.1rem;
  height: 2.1rem;
  padding: 0 0.52rem;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nc-measure-btn svg {
  width: 18px;
  height: 18px;
  display: block;
}
.nc-measure-btn + .nc-measure-btn,
.nc-measure-btn + .nc-measure-clear {
  border-left: 1px solid var(--color-border);
}
.nc-measure-clear {
  min-width: auto;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.nc-measure-btn:hover,
.nc-measure-clear:hover {
  background: var(--nc-preview-control-hover);
  color: var(--color-text-strong);
}
.nc-measure-btn.is-active {
  background: var(--color-brand-soft);
  color: var(--color-brand);
}
.nc-measure-btn:focus-visible,
.nc-measure-clear:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: -2px;
}
.nc-measure__hint {
  margin: 0.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

/* --- measurement overlay ------------------------------------- */
.nc-preview__measure-layer {
  pointer-events: auto;
}
.nc-measure__annotation :is(line, path, circle, rect, polygon, text) {
  pointer-events: none;
}
.nc-measure__annotation .nc-measure__drag-hit {
  pointer-events: stroke;
}
.nc-measure__annotation .nc-measure__remove,
.nc-measure__annotation .nc-measure__remove * {
  pointer-events: auto;
}
.nc-measure__line {
  stroke: var(--color-brand);
  stroke-width: 0.5;
  fill: none;
  vector-effect: non-scaling-stroke;
}
.nc-measure__drag-hit {
  stroke: transparent;
  stroke-width: 14;
  fill: none;
  pointer-events: stroke;
}
.nc-measure__drag-hit--h {
  cursor: ns-resize;
}
.nc-measure__drag-hit--v {
  cursor: ew-resize;
}
.nc-measure__drag-hit--r {
  cursor: grab;
}
.nc-measure__annotation.is-draggable-hover .nc-measure__line--dim {
  stroke: #fbbf24;
  stroke-width: 0.75;
}
.nc-measure__annotation.is-draggable-hover .nc-measure__arrow,
.nc-measure__annotation.is-draggable-hover .nc-measure__text {
  fill: #fbbf24;
  stroke: rgba(0, 0, 0, 0.8);
}
.nc-measure__annotation.is-draggable-hover .nc-measure__drag-hit {
  stroke: rgba(251, 191, 36, 0.18);
}
.nc-measure__remove {
  cursor: pointer;
}
.nc-measure__remove-box {
  fill: rgba(17, 24, 39, 0.94);
  stroke: rgba(251, 191, 36, 0.9);
  stroke-width: 0.45;
  vector-effect: non-scaling-stroke;
}
.nc-measure__remove-icon {
  fill: none;
  stroke: #fbbf24;
  stroke-width: 0.45;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}
.nc-measure__remove:hover .nc-measure__remove-box {
  fill: rgba(55, 65, 81, 0.95);
}
.nc-measure__remove:hover .nc-measure__remove-icon {
  stroke: #fde68a;
}
.nc-measure__line--ext {
  opacity: 0.7;
  stroke-dasharray: 2.2 1.7;
}
.nc-measure__line--dim {
  opacity: 0.95;
}
.nc-measure__arrow {
  fill: var(--color-brand);
  stroke: none;
  vector-effect: non-scaling-stroke;
}
.nc-measure__center {
  fill: var(--color-brand);
  stroke: none;
  vector-effect: non-scaling-stroke;
}
.nc-measure__text {
  fill: var(--color-brand);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  paint-order: stroke fill;
  stroke: rgba(0, 0, 0, 0.75);
  stroke-width: 0.65px;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}
.nc-measure__hover-line {
  stroke: #fbbf24;
  stroke-width: 0.7;
  stroke-dasharray: 2.2 1.7;
  opacity: 0.9;
  vector-effect: non-scaling-stroke;
}
.nc-measure__hover-point {
  fill: #fbbf24;
  stroke: #111827;
  stroke-width: 0.6;
  vector-effect: non-scaling-stroke;
}
.nc-measure__pending-point {
  fill: #22c55e;
  stroke: #052e16;
  stroke-width: 0.7;
  vector-effect: non-scaling-stroke;
}
.nc-preview[data-nc-preview-theme="light"] .nc-measure__line,
.nc-preview[data-nc-preview-theme="light"] .nc-measure__center,
.nc-preview[data-nc-preview-theme="light"] .nc-measure__text {
  stroke: #2563eb;
  fill: #2563eb;
}
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__line,
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__center,
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__text,
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__arrow {
  stroke: #1f2937;
  fill: #1f2937;
}
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__line {
  stroke-width: 0.65;
}
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__text {
  stroke: rgba(255, 255, 255, 0.95);
}
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__hover-point {
  fill: #f59e0b;
  stroke: #111827;
}
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__pending-point {
  fill: #16a34a;
  stroke: #ffffff;
}
.nc-preview[data-nc-preview-theme="light"] .nc-measure__annotation.is-draggable-hover .nc-measure__line--dim,
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__annotation.is-draggable-hover .nc-measure__line--dim {
  stroke: #d97706;
}
.nc-preview[data-nc-preview-theme="light"] .nc-measure__annotation.is-draggable-hover .nc-measure__arrow,
.nc-preview[data-nc-preview-theme="light"] .nc-measure__annotation.is-draggable-hover .nc-measure__text,
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__annotation.is-draggable-hover .nc-measure__arrow,
.nc-preview[data-nc-preview-theme="dwg"] .nc-measure__annotation.is-draggable-hover .nc-measure__text {
  fill: #d97706;
}
.nc-preview[data-nc-preview-theme="light"] .nc-measure__text {
  stroke: rgba(255, 255, 255, 0.85);
}
.nc-preview[data-nc-preview-theme="light"] .nc-measure__hover-point {
  stroke: #ffffff;
}
.nc-preview[data-nc-preview-theme="light"] .nc-measure__pending-point {
  stroke: #ffffff;
}
.nc-theme-switcher {
  display: inline-flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--nc-preview-control-bg);
  overflow: hidden;
}
.nc-unit-switcher {
  display: inline-flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--nc-preview-control-bg);
  overflow: hidden;
}
.nc-unit-option {
  appearance: none;
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  padding: 0 0.6rem;
  height: 2.1rem;
  min-width: 2.2rem;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: lowercase;
}
.nc-unit-option + .nc-unit-option {
  border-left: 1px solid var(--color-border);
}
.nc-unit-option:hover {
  background: var(--nc-preview-control-hover);
  color: var(--color-text);
}
.nc-unit-option.is-active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--color-brand);
}
.nc-unit-option:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: -2px;
}
.nc-font-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0 0.45rem;
  height: 2.1rem;
  border-right: 1px solid var(--color-border);
}
.nc-font-switcher__label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--color-text-muted);
  line-height: 1;
}
.nc-font-switcher__label--lg {
  font-size: 0.82rem;
}
.nc-font-switcher__slider {
  width: 88px;
  accent-color: var(--color-brand);
}
.nc-theme-option {
  appearance: none;
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  padding: 0 0.65rem;
  height: 2.1rem;
  min-width: 2.1rem;
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.nc-theme-option + .nc-theme-option {
  border-left: 1px solid var(--color-border);
}
.nc-theme-option:hover {
  background: var(--nc-preview-control-hover);
  color: var(--color-text-strong);
}
.nc-theme-option.is-active {
  background: var(--color-brand-soft);
  border-color: rgba(124, 196, 255, 0.28);
  color: var(--color-brand);
}
.nc-theme-option:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: -2px;
}

/* --- responsive ------------------------------------------------ */
@media (max-width: 960px) {
  .nc-workspace__grid {
    grid-template-columns: 1fr;
  }
  .nc-workspace__side {
    position: static;
  }
  .nc-preview__canvas {
    min-height: 60vh;
  }
  /* On narrow screens the fit-to-viewport trick fights the stacked layout.
     Fall back to natural flow: the page scrolls and each panel sizes to its
     content, which is friendlier on tablets/phones. */
  .page--wide {
    min-height: 0;
    display: block;
  }
  .page--wide .page__main,
  .page--wide .nc-workspace,
  .page--wide .nc-workspace > .container,
  .page--wide .nc-workspace__grid,
  .page--wide .nc-workspace__main {
    display: block;
    min-height: 0;
    height: auto;
  }
  .page--wide .nc-workspace__side {
    max-height: none;
    overflow: visible;
    margin-bottom: 1.25rem;
  }
  .page--wide .nc-preview__canvas {
    flex: none;
    min-height: 60vh;
  }
  .page--wide .nc-workspace__grid--share .nc-workspace__side,
  .page--wide .nc-workspace__grid--share .nc-workspace__main {
    min-height: 0;
    height: auto;
  }
  .page--wide .nc-workspace__grid--share .nc-workspace__side {
    overflow: visible;
    padding-right: 0;
    margin-bottom: 0.9rem;
  }
  .page--wide .nc-workspace__grid--share .nc-workspace__side > .nc-metadata,
  .page--wide .nc-workspace__grid--share .nc-workspace__main > .nc-preview {
    height: auto;
  }
  /* Shared link page previously sets the preview canvas to min-height: 0
     with higher specificity. Re-apply a concrete mobile frame so the
     drawing stays visible on phones. */
  .page--wide .nc-workspace__grid--share .nc-preview__canvas {
    height: min(62vh, 560px);
    min-height: 320px;
    flex: none;
  }
  .nc-panel__collapse-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .nc-panel[data-nc-collapsed="true"] {
    padding-bottom: 1rem;
  }
  .nc-panel[data-nc-collapsed="true"] .nc-panel__header {
    margin-bottom: 0;
  }
}