/* ══════════════════════════════════════════════════════════════════
   ToolOrbit Design System — Tokens
   The single source of design truth. Original palette and scale.
   Light is default; [data-theme="dark"] overrides semantic colors.
   ══════════════════════════════════════════════════════════════════ */

:root {
  /* ── Brand & accent (HSL primitives) ── */
  --brand-50:  #eef0ff;
  --brand-100: #dfe3ff;
  --brand-200: #c2c9ff;
  --brand-300: #9aa6ff;
  --brand-400: #7c87ff;
  --brand-500: #5b6cff;   /* primary */
  --brand-600: #4a55e6;
  --brand-700: #3b42b8;
  --brand-800: #2f368f;
  --brand-900: #262c70;

  --teal-500:  #12b886;
  --pink-500:  #f06595;
  --amber-500: #fab005;
  --violet-500:#7048e8;
  --cyan-500:  #22b8cf;
  --red-500:   #fa5252;
  --green-500: #2f9e44;

  /* ── Neutral ramp ── */
  --gray-0:   #ffffff;
  --gray-25:  #fcfcfd;
  --gray-50:  #f7f8fa;
  --gray-100: #eef0f4;
  --gray-150: #e6e9ef;
  --gray-200: #dce0e8;
  --gray-300: #c2c8d4;
  --gray-400: #9aa1b1;
  --gray-500: #707888;
  --gray-600: #555c6b;
  --gray-700: #3d4350;
  --gray-800: #262b35;
  --gray-900: #161a22;
  --gray-950: #0d1016;

  /* ── Semantic colors (LIGHT) ── */
  --color-bg:          var(--gray-25);
  --color-bg-subtle:   var(--gray-50);
  --color-surface:     var(--gray-0);
  --color-surface-2:   var(--gray-50);
  --color-elevated:    var(--gray-0);
  --color-border:      var(--gray-150);
  --color-border-strong: var(--gray-300);
  --color-text:        var(--gray-900);
  --color-text-muted:  var(--gray-500);
  --color-text-subtle: var(--gray-400);
  --color-text-invert: var(--gray-0);

  --color-primary:        var(--brand-500);
  --color-primary-hover:  var(--brand-600);
  --color-primary-soft:   var(--brand-50);
  --color-on-primary:     #ffffff;

  --color-success: var(--green-500);
  --color-warning: var(--amber-500);
  --color-danger:  var(--red-500);
  --color-info:    var(--cyan-500);

  --color-success-soft: #e6f5ec;
  --color-warning-soft: #fff4e0;
  --color-danger-soft:  #ffe9e9;
  --color-info-soft:    #e3f7fb;

  /* ── Typography ── */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;

  --text-xs:   0.75rem;   /* 12 */
  --text-sm:   0.875rem;  /* 14 */
  --text-base: 1rem;      /* 16 */
  --text-lg:   1.125rem;  /* 18 */
  --text-xl:   1.25rem;   /* 20 */
  --text-2xl:  1.5rem;    /* 24 */
  --text-3xl:  1.875rem;  /* 30 */
  --text-4xl:  2.25rem;   /* 36 */
  --text-5xl:  3rem;      /* 48 */
  --text-6xl:  3.75rem;   /* 60 */

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --tracking-tight: -0.02em;
  --tracking-tighter: -0.035em;

  /* ── Spacing scale (4px base) ── */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ── Radius ── */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 999px;

  /* ── Shadows (soft, layered) ── */
  --shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-sm: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.08), 0 2px 4px rgba(16, 24, 40, 0.04);
  --shadow-lg: 0 12px 28px rgba(16, 24, 40, 0.10), 0 4px 8px rgba(16, 24, 40, 0.05);
  --shadow-xl: 0 24px 48px rgba(16, 24, 40, 0.14), 0 8px 16px rgba(16, 24, 40, 0.06);
  --shadow-glow: 0 0 0 4px var(--color-primary-soft);

  /* ── Layout ── */
  --container: 1200px;
  --container-wide: 1400px;
  --container-narrow: 760px;
  --header-h: 68px;

  /* ── Motion ── */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 120ms;
  --dur: 200ms;
  --dur-slow: 360ms;

  /* ── Z-index ── */
  --z-header: 100;
  --z-dropdown: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;

  color-scheme: light;
}

/* ── DARK THEME ── */
[data-theme="dark"] {
  --color-bg:          var(--gray-950);
  --color-bg-subtle:   #11151d;
  --color-surface:     var(--gray-900);
  --color-surface-2:   #1b212c;
  --color-elevated:    #1b212c;
  --color-border:      #262d39;
  --color-border-strong: #353d4c;
  --color-text:        #eef1f6;
  --color-text-muted:  #9aa3b2;
  --color-text-subtle: #6b7384;
  --color-text-invert: var(--gray-950);

  --color-primary:        var(--brand-400);
  --color-primary-hover:  var(--brand-300);
  --color-primary-soft:   rgba(124, 135, 255, 0.14);
  --color-on-primary:     #0d1016;

  --color-success-soft: rgba(47, 158, 68, 0.16);
  --color-warning-soft: rgba(250, 176, 5, 0.16);
  --color-danger-soft:  rgba(250, 82, 82, 0.16);
  --color-info-soft:    rgba(34, 184, 207, 0.16);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.55);
  --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.6);

  color-scheme: dark;
}

/* ══════════════════════════════════════════════════════════════════
   Base — reset, elements, typography, accessibility
   ══════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-4));
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  min-height: 100vh;
  transition: background-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  text-wrap: balance;
}

h1 { font-size: clamp(2rem, 5vw, var(--text-5xl)); }
h2 { font-size: clamp(1.6rem, 3.5vw, var(--text-3xl)); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { text-wrap: pretty; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { color: var(--color-primary-hover); }

img, picture, svg, video, canvas { display: block; max-width: 100%; }
img, video { height: auto; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}
button { cursor: pointer; background: none; border: none; }

ul, ol { padding: 0; list-style-position: inside; }

code, pre, kbd, samp { font-family: var(--font-mono); font-size: 0.92em; }

pre {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow: auto;
  line-height: var(--leading-snug);
}

kbd {
  display: inline-flex;
  align-items: center;
  padding: 2px 6px;
  font-size: var(--text-xs);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-strong);
  border-bottom-width: 2px;
  border-radius: var(--radius-xs);
  color: var(--color-text-muted);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

::selection { background: var(--color-primary-soft); color: var(--color-text); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

/* Scrollbar */
* { scrollbar-width: thin; scrollbar-color: var(--color-border-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg);
}

/* Accessibility helpers */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed;
  top: -100px; left: var(--space-4);
  z-index: var(--z-toast);
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: var(--weight-semibold);
  transition: top var(--dur) var(--ease-out);
}
.skip-link:focus { top: var(--space-4); color: var(--color-on-primary); }

/* ══════════════════════════════════════════════════════════════════
   Layout — containers, grid, header, footer, sections
   ══════════════════════════════════════════════════════════════════ */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}
.container--wide { max-width: var(--container-wide); }
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.section--tight { padding-block: var(--space-12); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}
.section-head--center { text-align: center; align-items: center; }
.section-head__eyebrow {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.section-head__title { font-size: clamp(1.5rem, 3vw, var(--text-3xl)); }
.section-head__desc { color: var(--color-text-muted); max-width: 60ch; }
.section-head--center .section-head__desc { margin-inline: auto; }

/* Responsive auto-fit grid */
.grid { display: grid; gap: var(--space-5); }
.grid--cards { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid--cards-lg { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.cluster { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
.stack > * + * { margin-top: var(--space-4); }

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--color-bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}
.site-header[data-scrolled="true"] {
  border-bottom-color: var(--color-border);
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  flex: none;
}
.brand__mark svg { width: 34px; height: 34px; }
.brand__word { font-weight: var(--weight-bold); }
.brand__word-b { color: var(--brand-500); }

.main-nav { display: flex; align-items: center; gap: var(--space-1); margin-left: var(--space-2); }
.main-nav a {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
}
.main-nav a:hover { color: var(--color-text); background: var(--color-surface-2); }
.main-nav a[aria-current="page"] { color: var(--color-text); }

.header-actions { display: flex; align-items: center; gap: var(--space-1); margin-left: auto; }

.nav-toggle { display: none; }

/* Compact the search button before the nav runs out of room */
@media (max-width: 1180px) {
  [data-command-palette] span, [data-command-palette] kbd { display: none; }
}

/* Desktop nav collapses to the hamburger at the same width it hides (980px) */
@media (max-width: 980px) {
  .main-nav { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* ── Footer ── */
.site-footer {
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16) var(--space-8);
  margin-top: var(--space-24);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-8);
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h4 {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.footer-col a { color: var(--color-text-muted); font-size: var(--text-sm); }
.footer-col a:hover { color: var(--color-text); }
.footer-about { max-width: 34ch; color: var(--color-text-muted); font-size: var(--text-sm); }
.footer-brand {
  display: inline-flex;
  background: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--color-border);
}
.footer-brand img { display: block; width: 150px; height: auto; }
.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-subtle);
  font-size: var(--text-sm);
}

/* ── Breadcrumb ── */
.breadcrumb { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; font-size: var(--text-sm); color: var(--color-text-muted); }
.breadcrumb ol { display: contents; }
.breadcrumb li { display: inline-flex; align-items: center; gap: var(--space-2); }
.breadcrumb li:not(:last-child)::after { content: "/"; color: var(--color-text-subtle); }
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb [aria-current="page"] { color: var(--color-text); font-weight: var(--weight-medium); }

/* Two-column tool/article page shell */
.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: var(--space-10);
  align-items: start;
}
.page-shell__aside { position: sticky; top: calc(var(--header-h) + var(--space-6)); display: flex; flex-direction: column; gap: var(--space-6); }
@media (max-width: 1024px) {
  .page-shell { grid-template-columns: 1fr; }
  .page-shell__aside { position: static; }
}

/* ══════════════════════════════════════════════════════════════════
   Components — buttons, cards, forms, search, tabs, toast, stepper…
   ══════════════════════════════════════════════════════════════════ */

/* ── Buttons ── */
.btn {
  --btn-bg: var(--color-surface);
  --btn-fg: var(--color-text);
  --btn-bd: var(--color-border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  line-height: 1;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius-md);
  transition: transform var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), color var(--dur-fast);
  white-space: nowrap;
  user-select: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; pointer-events: none; }
.btn svg { width: 16px; height: 16px; }

.btn--primary {
  --btn-bg: var(--color-primary);
  --btn-fg: var(--color-on-primary);
  --btn-bd: transparent;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { --btn-bg: var(--color-primary-hover); box-shadow: var(--shadow-md); }

.btn--ghost { --btn-bg: transparent; --btn-bd: transparent; --btn-fg: var(--color-text-muted); }
.btn--ghost:hover { --btn-bg: var(--color-surface-2); --btn-fg: var(--color-text); transform: none; }

.btn--soft { --btn-bg: var(--color-primary-soft); --btn-fg: var(--color-primary); --btn-bd: transparent; }

.btn--lg { padding: var(--space-4) var(--space-6); font-size: var(--text-base); border-radius: var(--radius-lg); }
.btn--sm { padding: var(--space-2) var(--space-3); font-size: var(--text-xs); border-radius: var(--radius-sm); }
.btn--icon { padding: var(--space-2); width: 38px; height: 38px; }
.btn--block { width: 100%; }

/* ── Badges & pills ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  line-height: 1.4;
}
.badge--primary { background: var(--color-primary-soft); color: var(--color-primary); }
.badge--success { background: var(--color-success-soft); color: var(--color-success); }
.badge--warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge--danger { background: var(--color-danger-soft); color: var(--color-danger); }
.badge--info { background: var(--color-info-soft); color: var(--color-info); }
.badge--dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  transition: all var(--dur-fast) var(--ease-out);
}
.chip:hover, .chip[aria-pressed="true"] {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

/* ── Cards ── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur);
}
.card--interactive:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border-strong);
}

/* Tool card */
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur);
}
.tool-card::before {
  content: "";
  position: absolute; inset: 0 0 auto 0;
  height: 3px;
  background: var(--tc-accent, var(--color-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-slow) var(--ease-out);
}
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-border-strong); }
.tool-card:hover::before { transform: scaleX(1); }
.tool-card__icon {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--tc-accent, var(--color-primary)) 12%, transparent);
  color: var(--tc-accent, var(--color-primary));
}
.tool-card__icon svg { width: 22px; height: 22px; }
.tool-card__title { font-size: var(--text-lg); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-tight); }
.tool-card__desc { color: var(--color-text-muted); font-size: var(--text-sm); line-height: var(--leading-snug); flex: 1; }
.tool-card__meta { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); margin-top: var(--space-1); }
.tool-card__badges { position: absolute; top: var(--space-4); right: var(--space-4); display: flex; gap: var(--space-1); }
.tool-card__cat { font-size: var(--text-xs); color: var(--color-text-subtle); font-weight: var(--weight-medium); }
.tool-card__arrow { color: var(--color-text-subtle); transition: transform var(--dur) var(--ease-out), color var(--dur); }
.tool-card:hover .tool-card__arrow { transform: translateX(3px); color: var(--color-primary); }

/* Category card */
.category-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur);
}
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.category-card__glow {
  position: absolute; width: 160px; height: 160px; border-radius: 50%;
  top: -60px; right: -40px; filter: blur(40px); opacity: 0.18;
  background: var(--cc-accent, var(--color-primary));
  transition: opacity var(--dur);
}
.category-card:hover .category-card__glow { opacity: 0.32; }
.category-card__icon {
  display: grid; place-items: center; width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--cc-accent, var(--color-primary)) 14%, transparent);
  color: var(--cc-accent, var(--color-primary));
}
.category-card__icon svg { width: 24px; height: 24px; }
.category-card__name { font-size: var(--text-lg); font-weight: var(--weight-semibold); }
.category-card__count { font-size: var(--text-sm); color: var(--color-text-muted); }
.category-card__desc { font-size: var(--text-sm); color: var(--color-text-muted); }

/* Article card */
.article-card {
  display: flex; flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.article-card__cover { aspect-ratio: 16 / 9; width: 100%; object-fit: cover; display: block; background: var(--color-surface-2); }
.article-card__body { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
.article-card__title { font-size: var(--text-lg); font-weight: var(--weight-semibold); line-height: var(--leading-snug); }
.article-card__excerpt { font-size: var(--text-sm); color: var(--color-text-muted); flex: 1; }
.article-card__meta { font-size: var(--text-xs); color: var(--color-text-subtle); display: flex; gap: var(--space-3); }

/* ── Forms & inputs ── */
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.label { font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--color-text); }
.help { font-size: var(--text-xs); color: var(--color-text-muted); }

.input, .textarea, .select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.input::placeholder, .textarea::placeholder { color: var(--color-text-subtle); }
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.textarea { resize: vertical; min-height: 140px; line-height: var(--leading-normal); font-family: var(--font-mono); }
.textarea--prose { font-family: var(--font-sans); }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23707888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right var(--space-3) center; padding-right: var(--space-10); }

.switch { display: inline-flex; align-items: center; gap: var(--space-3); cursor: pointer; }
.switch input { position: absolute; opacity: 0; }
.switch__track { width: 42px; height: 24px; border-radius: var(--radius-full); background: var(--color-border-strong); position: relative; transition: background var(--dur); flex: none; }
.switch__track::after { content: ""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: var(--shadow-sm); transition: transform var(--dur) var(--ease-spring); }
.switch input:checked + .switch__track { background: var(--color-primary); }
.switch input:checked + .switch__track::after { transform: translateX(18px); }
.switch input:focus-visible + .switch__track { box-shadow: 0 0 0 3px var(--color-primary-soft); }

.seg {
  display: inline-flex;
  padding: 3px;
  gap: 2px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.seg button {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: all var(--dur-fast);
}
.seg button[aria-pressed="true"] { background: var(--color-surface); color: var(--color-text); box-shadow: var(--shadow-xs); }

/* ── Search bar ── */
.search {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}
.search__icon { position: absolute; left: var(--space-4); color: var(--color-text-subtle); pointer-events: none; }
.search input {
  width: 100%;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
  font-size: var(--text-base);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
}
.search input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 4px var(--color-primary-soft), var(--shadow-md); }
.search__kbd { position: absolute; right: var(--space-3); display: flex; gap: 4px; }
.search--hero input { padding-block: var(--space-5); font-size: var(--text-lg); border-radius: var(--radius-xl); }

/* Search dropdown */
.search-results {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0; right: 0;
  background: var(--color-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  max-height: 60vh;
  overflow: auto;
  z-index: var(--z-dropdown);
}
.search-results__group { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-subtle); padding: var(--space-3) var(--space-3) var(--space-1); }
.search-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-text);
}
.search-item:hover, .search-item[aria-selected="true"] { background: var(--color-surface-2); }
.search-item__icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-sm); background: var(--color-primary-soft); color: var(--color-primary); flex: none; }
.search-item__icon svg { width: 18px; height: 18px; }
.search-item .flex-1 { min-width: 0; }
.search-item__title { display: block; font-weight: var(--weight-medium); font-size: var(--text-sm); }
.search-item__desc { display: block; font-size: var(--text-xs); color: var(--color-text-muted); }

/* ── Command palette ── */
.cmdk-overlay {
  position: fixed; inset: 0;
  background: rgba(10, 12, 18, 0.5);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal);
  display: grid;
  place-items: start center;
  padding-top: 12vh;
  opacity: 0;
  animation: fade-in var(--dur) var(--ease-out) forwards;
}
.cmdk {
  width: min(90vw, 620px);
  background: var(--color-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: translateY(-8px);
  animation: pop-in var(--dur) var(--ease-out) forwards;
}
.cmdk__input-wrap { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border); }
.cmdk__input-wrap svg { color: var(--color-text-subtle); }
.cmdk__input { width: 100%; border: none; background: none; font-size: var(--text-lg); }
.cmdk__input:focus { outline: none; }
.cmdk__list { max-height: 50vh; overflow: auto; padding: var(--space-2); }
.cmdk__empty { padding: var(--space-8); text-align: center; color: var(--color-text-muted); }
.cmdk__footer { display: flex; gap: var(--space-4); padding: var(--space-3) var(--space-5); border-top: 1px solid var(--color-border); font-size: var(--text-xs); color: var(--color-text-subtle); }

/* ── Tabs ── */
.tabs { border-bottom: 1px solid var(--color-border); display: flex; gap: var(--space-1); overflow-x: auto; }
.tab {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.tab[aria-selected="true"] { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab:hover { color: var(--color-text); }

/* ── Accordion / FAQ ── */
.accordion { border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; background: var(--color-surface); }
.accordion__item + .accordion__item { border-top: 1px solid var(--color-border); }
.accordion__btn {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-5);
  text-align: left;
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  font-size: var(--text-base);
}
.accordion__btn:hover { background: var(--color-surface-2); }
.accordion__icon { flex: none; transition: transform var(--dur) var(--ease-out); color: var(--color-text-muted); }
.accordion__btn[aria-expanded="true"] .accordion__icon { transform: rotate(45deg); }
.accordion__panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-slow) var(--ease-out); }
.accordion__panel[data-open="true"] { grid-template-rows: 1fr; }
.accordion__panel > div { overflow: hidden; }
.accordion__panel p { padding: 0 var(--space-5) var(--space-5); color: var(--color-text-muted); }

/* ── Alerts / callouts ── */
.alert {
  display: flex; gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: var(--text-sm);
}
.alert svg { flex: none; width: 20px; height: 20px; margin-top: 1px; }
.alert--info { background: var(--color-info-soft); border-color: transparent; color: color-mix(in srgb, var(--color-info) 80%, var(--color-text)); }
.alert--success { background: var(--color-success-soft); border-color: transparent; }
.alert--warning { background: var(--color-warning-soft); border-color: transparent; }
.alert--danger { background: var(--color-danger-soft); border-color: transparent; }
.alert__title { font-weight: var(--weight-semibold); }

/* ── Toast ── */
.toast-stack {
  position: fixed; bottom: var(--space-6); right: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-3);
  z-index: var(--z-toast);
  max-width: min(90vw, 380px);
}
.toast {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-elevated);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  animation: toast-in var(--dur-slow) var(--ease-spring);
}
.toast--success { border-left-color: var(--color-success); }
.toast--error { border-left-color: var(--color-danger); }
.toast--warning { border-left-color: var(--color-warning); }
.toast[data-leaving="true"] { animation: toast-out var(--dur) var(--ease-in-out) forwards; }
.toast__icon { color: var(--color-primary); }
.toast--success .toast__icon { color: var(--color-success); }
.toast--error .toast__icon { color: var(--color-danger); }

/* ── Progress ── */
.progress { height: 8px; border-radius: var(--radius-full); background: var(--color-surface-2); overflow: hidden; }
.progress__bar { height: 100%; border-radius: var(--radius-full); background: linear-gradient(90deg, var(--brand-500), var(--violet-500)); transition: width var(--dur-slow) var(--ease-out); width: 0; }
.progress--indeterminate .progress__bar { width: 40%; animation: indeterminate 1.2s var(--ease-in-out) infinite; }

/* ── Skeleton ── */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-2) 25%, var(--color-border) 37%, var(--color-surface-2) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
  border-radius: var(--radius-sm);
}
.skeleton--text { height: 0.8em; margin: 0.3em 0; }
.skeleton--card { height: 180px; border-radius: var(--radius-lg); }

/* ── Empty state ── */
.empty {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--color-text-muted);
}
.empty__icon { width: 56px; height: 56px; margin: 0 auto var(--space-4); color: var(--color-text-subtle); }
.empty__title { color: var(--color-text); font-size: var(--text-xl); font-weight: var(--weight-semibold); margin-bottom: var(--space-2); }

/* ── Tooltip ── */
.tooltip { position: relative; }
.tooltip::after {
  content: attr(data-tip);
  position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(4px);
  background: var(--gray-900); color: #fff;
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm);
  font-size: var(--text-xs); white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur), transform var(--dur);
  z-index: var(--z-dropdown);
}
.tooltip:hover::after { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Pagination ── */
.pagination { display: flex; gap: var(--space-2); justify-content: center; align-items: center; }
.pagination a, .pagination span {
  display: grid; place-items: center;
  min-width: 38px; height: 38px; padding: 0 var(--space-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination [aria-current="page"] { background: var(--color-primary); color: var(--color-on-primary); border-color: transparent; }

/* ── Stepper (AI-agent workflow) ── */
.stepper { display: flex; flex-direction: column; gap: var(--space-1); }
.step {
  display: flex; gap: var(--space-4); align-items: flex-start;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  transition: background var(--dur);
}
.step[data-state="active"] { background: var(--color-primary-soft); }
.step__rail { display: flex; flex-direction: column; align-items: center; align-self: stretch; }
.step__dot {
  display: grid; place-items: center;
  width: 28px; height: 28px; flex: none;
  border-radius: 50%;
  border: 2px solid var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-text-subtle);
  font-size: var(--text-xs); font-weight: var(--weight-bold);
  transition: all var(--dur) var(--ease-out);
}
.step__line { width: 2px; flex: 1; background: var(--color-border); margin: 4px 0; min-height: 12px; }
.step:last-child .step__line { display: none; }
.step[data-state="active"] .step__dot { border-color: var(--color-primary); color: var(--color-primary); box-shadow: 0 0 0 4px var(--color-primary-soft); }
.step[data-state="done"] .step__dot { border-color: var(--color-success); background: var(--color-success); color: #fff; }
.step[data-state="done"] .step__line { background: var(--color-success); }
.step__body { padding-top: 3px; }
.step__title { font-weight: var(--weight-semibold); font-size: var(--text-sm); }
.step[data-state="idle"] .step__title { color: var(--color-text-muted); }
.step__status { font-size: var(--text-xs); color: var(--color-text-muted); display: flex; align-items: center; gap: var(--space-2); }
.step__spinner { width: 12px; height: 12px; border: 2px solid var(--color-primary); border-right-color: transparent; border-radius: 50%; animation: spin 0.7s linear infinite; }

/* ── Agent layout (stepper + workspace) ── */
.agent-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: var(--space-8); }
@media (max-width: 860px) { .agent-layout { grid-template-columns: 1fr; gap: var(--space-6); } }
.agent-steps { position: sticky; top: calc(var(--header-h) + var(--space-4)); align-self: start; }
@media (max-width: 860px) { .agent-steps { position: static; } }
.agent-steps__head { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-subtle); margin-bottom: var(--space-4); display: flex; align-items: center; gap: var(--space-2); }
.agent-main { min-width: 0; display: flex; flex-direction: column; gap: var(--space-5); }
.agent-banner { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-xs); color: var(--color-text-muted); }
.agent-banner .badge { background: var(--color-info-soft); color: var(--color-info); }

/* ── Tool workbench layout ── */
.workbench { display: grid; gap: var(--space-5); }
.workbench__panel { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); }
.workbench__toolbar { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; }
.workbench__toolbar .spacer { flex: 1; }
.io-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
@media (max-width: 768px) { .io-grid { grid-template-columns: 1fr; } }
.result-summary {
  display: flex; flex-wrap: wrap; gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
}
.result-stat { display: flex; flex-direction: column; }
.result-stat__value { font-size: var(--text-xl); font-weight: var(--weight-bold); color: var(--color-text); font-variant-numeric: tabular-nums; }
.result-stat__label { font-size: var(--text-xs); color: var(--color-text-muted); }

.dropzone {
  display: grid; place-items: center; gap: var(--space-3);
  padding: var(--space-12) var(--space-6);
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
  text-align: center;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--dur), background var(--dur);
}
.dropzone:hover, .dropzone[data-drag="true"] { border-color: var(--color-primary); background: var(--color-primary-soft); }
.dropzone svg { width: 36px; height: 36px; color: var(--color-text-subtle); }

/* ── Hero ── */
.hero { position: relative; overflow: hidden; padding-block: clamp(var(--space-16), 10vw, var(--space-32)); text-align: center; }
.hero__bg { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.hero__blob { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.35; }
.hero__blob--1 { width: 480px; height: 480px; background: var(--brand-400); top: -160px; left: -80px; animation: float 14s var(--ease-in-out) infinite; }
.hero__blob--2 { width: 420px; height: 420px; background: var(--violet-500); top: -120px; right: -60px; animation: float 18s var(--ease-in-out) infinite reverse; }
.hero__blob--3 { width: 360px; height: 360px; background: var(--teal-500); bottom: -180px; left: 40%; opacity: 0.2; animation: float 16s var(--ease-in-out) infinite; }
.hero__grid-overlay { position: absolute; inset: 0; background-image: linear-gradient(var(--color-border) 1px, transparent 1px), linear-gradient(90deg, var(--color-border) 1px, transparent 1px); background-size: 48px 48px; opacity: 0.25; mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, #000 40%, transparent 75%); }
.hero h1 { letter-spacing: var(--tracking-tighter); margin-bottom: var(--space-5); }
.hero__lead { font-size: clamp(var(--text-lg), 2.4vw, var(--text-2xl)); color: var(--color-text-muted); max-width: 56ch; margin: 0 auto var(--space-8); }
.hero__search { max-width: 640px; margin: 0 auto; }
.gradient-text { background: linear-gradient(120deg, var(--brand-500), var(--violet-500) 60%, var(--pink-500)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ── Newsletter ── */
.newsletter {
  background: linear-gradient(135deg, var(--brand-600), var(--violet-500));
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-8), 5vw, var(--space-16));
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.newsletter h2 { color: #fff; }
.newsletter p { color: rgba(255,255,255,0.85); max-width: 48ch; margin: var(--space-3) auto var(--space-6); }
.newsletter__form { display: flex; gap: var(--space-3); max-width: 480px; margin: 0 auto; }
.newsletter__form input { flex: 1; border: none; border-radius: var(--radius-md); padding: var(--space-4); }
.newsletter__form input:focus { outline: none; box-shadow: 0 0 0 4px rgba(255,255,255,0.3); }
@media (max-width: 520px) { .newsletter__form { flex-direction: column; } }

/* ── Stat strip ── */
.stat-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--space-6); text-align: center; }
.stat-strip__value { font-size: var(--text-4xl); font-weight: var(--weight-bold); letter-spacing: var(--tracking-tight); font-variant-numeric: tabular-nums; }
.stat-strip__label { color: var(--color-text-muted); font-size: var(--text-sm); }

/* ── Prose (articles) ── */
.prose { max-width: 70ch; }
.prose > * + * { margin-top: var(--space-5); }
.prose h2 { margin-top: var(--space-10); }
.prose h3 { margin-top: var(--space-8); }
.prose p, .prose li { color: var(--color-text); line-height: var(--leading-relaxed); }
.prose ul { padding-left: var(--space-6); list-style: disc; display: flex; flex-direction: column; gap: var(--space-2); }
.prose .callout { background: var(--color-primary-soft); border-left: 3px solid var(--color-primary); padding: var(--space-4) var(--space-5); border-radius: var(--radius-md); }
.article-hero__cover { width: 100%; max-width: 760px; aspect-ratio: 1200 / 630; object-fit: cover; border-radius: var(--radius-lg); border: 1px solid var(--color-border); box-shadow: var(--shadow-md); margin-top: var(--space-8); }
.toc { font-size: var(--text-sm); }
.toc a { color: var(--color-text-muted); display: block; padding: var(--space-1) 0; border-left: 2px solid var(--color-border); padding-left: var(--space-3); }
.toc a:hover { color: var(--color-primary); border-left-color: var(--color-primary); }

/* ── Modal ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(10,12,18,0.55); backdrop-filter: blur(4px); z-index: var(--z-modal); display: grid; place-items: center; padding: var(--space-4); animation: fade-in var(--dur); }
.modal { background: var(--color-elevated); border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); max-width: 520px; width: 100%; animation: pop-in var(--dur) var(--ease-out); }
.modal__head { display: flex; justify-content: space-between; align-items: center; padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--color-border); }
.modal__body { padding: var(--space-6); }

/* ══════════════════════════════════════════════════════════════════
   Sections — mega-menu nav, feature pills, how-it-works, why-free
   Patterns inspired by modern tool hubs, rebuilt on ToolOrbit tokens.
   ══════════════════════════════════════════════════════════════════ */

/* ── Mega-menu navigation ── */
.nav { display: flex; align-items: center; gap: 1px; margin-left: var(--space-1); flex-wrap: nowrap; }
.nav__group { position: relative; }
.nav__link,
.nav__trigger {
  display: inline-flex; align-items: center; gap: var(--space-1);
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  background: none;
  white-space: nowrap;
}
.nav__trigger svg, .nav__link svg { width: 15px; height: 15px; flex: none; }
.nav__trigger .chev { width: 13px; height: 13px; color: var(--color-text-subtle); transition: transform var(--dur) var(--ease-out); }
.nav__link:hover, .nav__trigger:hover,
.nav__group:hover .nav__trigger,
.nav__group:focus-within .nav__trigger { color: var(--color-text); background: var(--color-surface-2); }
.nav__group:hover .chev, .nav__group:focus-within .chev, .nav__trigger[aria-expanded="true"] .chev { transform: rotate(180deg); }
.nav__link[aria-current="page"] { color: var(--color-text); }

.mega {
  position: absolute;
  top: calc(100% + 10px); left: 0;
  width: 640px; max-width: min(94vw, 680px);
  background: var(--color-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-3);
  z-index: var(--z-dropdown);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), visibility var(--dur);
}
.mega::before { content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 14px; } /* hover bridge */
.nav__group:hover .mega,
.nav__group:focus-within .mega,
.mega[data-open="true"] { opacity: 1; visibility: visible; transform: none; }
.mega__grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: var(--space-2); }
.mega__grid > div { min-width: 0; }
.mega__head { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-subtle); padding: var(--space-2) var(--space-3) var(--space-1); }
.mega__featured a { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-3); border-radius: var(--radius-md); }
.mega__featured a:hover { background: var(--color-surface-2); }
.mega__ico { display: grid; place-items: center; width: 36px; height: 36px; flex: none; border-radius: var(--radius-sm); background: var(--mega-accent, var(--color-primary-soft)); color: var(--mega-fg, var(--color-primary)); }
.mega__ico svg { width: 18px; height: 18px; }
.mega__txt { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.mega__t { display: block; font-weight: var(--weight-semibold); font-size: var(--text-sm); color: var(--color-text); line-height: 1.3; }
.mega__d { display: block; font-size: var(--text-xs); color: var(--color-text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mega__featured a .arrow { margin-left: auto; color: var(--color-text-subtle); opacity: 0; transition: opacity var(--dur), transform var(--dur); }
.mega__featured a:hover .arrow { opacity: 1; transform: translateX(2px); }
.mega__links { border-left: 1px solid var(--color-border); padding-left: var(--space-2); display: flex; flex-direction: column; }
.mega__links a { display: block; padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); color: var(--color-text-muted); font-size: var(--text-sm); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mega__links a:hover { color: var(--color-primary); background: var(--color-primary-soft); }
.mega__foot { margin-top: var(--space-2); padding: var(--space-3); border-top: 1px solid var(--color-border); display: flex; }
.mega__foot a { display: inline-flex; align-items: center; gap: var(--space-2); font-weight: var(--weight-semibold); font-size: var(--text-sm); }
.mega__foot a svg { width: 16px; height: 16px; }
.mega__featured a .arrow svg { width: 16px; height: 16px; }

@media (max-width: 980px) { .nav { display: none; } }

/* ── Hero feature pills ── */
.feature-pills { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; margin-top: var(--space-6); }
.feature-pill {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-xs);
  font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--color-text);
}
.feature-pill svg { width: 16px; height: 16px; color: var(--color-primary); }
.feature-pill .stars { color: var(--amber-500); letter-spacing: 1px; }

/* ── How it works (numbered steps + collage) ── */
.how-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); align-items: center; }
@media (max-width: 900px) { .how-grid { grid-template-columns: 1fr; gap: var(--space-8); } }
.guide-steps { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-6); }
.guide-step {
  display: flex; gap: var(--space-4); align-items: flex-start;
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: border-color var(--dur), box-shadow var(--dur), transform var(--dur);
}
.guide-step:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-md); transform: translateX(2px); }
.guide-step__n {
  display: grid; place-items: center; flex: none;
  width: 36px; height: 36px; border-radius: var(--radius-full);
  background: var(--color-primary-soft); color: var(--color-primary);
  font-weight: var(--weight-bold); font-variant-numeric: tabular-nums;
}
.guide-step__t { font-weight: var(--weight-semibold); }
.guide-step__d { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: 2px; }
.guide-step__arrow { margin-left: auto; align-self: center; color: var(--color-text-subtle); }
.guide-step__arrow svg { width: 18px; height: 18px; }
.why-visual__ico svg { width: 20px; height: 20px; }

.collage { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
.collage__tile {
  aspect-ratio: 1; border-radius: var(--radius-lg); display: grid; place-items: center;
  background: var(--tile-bg, var(--color-primary-soft)); color: var(--tile-fg, var(--color-primary));
  position: relative; transition: transform var(--dur) var(--ease-spring);
}
.collage__tile:hover { transform: scale(1.05) rotate(-2deg); }
.collage__tile svg { width: 34px; height: 34px; }
.collage__tile--tall { grid-row: span 2; aspect-ratio: auto; }
.collage__tile[data-check]::after {
  content: ""; position: absolute; top: 8px; right: 8px; width: 22px; height: 22px;
  border-radius: 50%; background: var(--violet-500);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center;
  box-shadow: var(--shadow-sm);
}

/* ── Why free ── */
.why-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: var(--space-12); align-items: center; }
@media (max-width: 900px) { .why-grid { grid-template-columns: 1fr; gap: var(--space-8); } }
.why-visual {
  position: relative; border-radius: var(--radius-2xl);
  background: linear-gradient(135deg, var(--brand-50), color-mix(in srgb, var(--violet-500) 14%, var(--color-surface)));
  border: 1px solid var(--color-border);
  padding: var(--space-10);
  min-height: 280px; display: flex; flex-direction: column; gap: var(--space-4); justify-content: center;
}
[data-theme="dark"] .why-visual { background: linear-gradient(135deg, var(--color-surface-2), color-mix(in srgb, var(--violet-500) 18%, var(--color-surface))); }
.why-visual__row { display: flex; align-items: center; gap: var(--space-3); }
.why-visual__ico { display: grid; place-items: center; width: 40px; height: 40px; border-radius: var(--radius-md); background: var(--color-surface); color: var(--violet-500); box-shadow: var(--shadow-sm); }
.why-visual__bar { height: 12px; border-radius: var(--radius-full); background: var(--color-surface); box-shadow: var(--shadow-xs); flex: 1; }
.why-visual__bar--short { max-width: 60%; }
.why-bubble {
  position: absolute; top: -18px; right: -10px;
  background: var(--color-primary); color: var(--color-on-primary);
  font-weight: var(--weight-bold); font-size: var(--text-sm);
  padding: var(--space-3) var(--space-5); border-radius: var(--radius-full) var(--radius-full) var(--radius-full) 2px;
  box-shadow: var(--shadow-lg);
}
.why-list { display: flex; flex-direction: column; gap: var(--space-5); margin-top: var(--space-6); counter-reset: why; }
.why-item { display: flex; gap: var(--space-4); }
.why-item__n { display: grid; place-items: center; flex: none; width: 32px; height: 32px; border-radius: var(--radius-full); background: var(--color-primary); color: var(--color-on-primary); font-weight: var(--weight-bold); }
.why-item__t { font-weight: var(--weight-semibold); }
.why-item__d { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: 2px; }

/* ══════════════════════════════════════════════════════════════════
   Utilities & keyframe animations
   ══════════════════════════════════════════════════════════════════ */

/* Spacing helpers */
.mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); } .mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); } .mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); } .mb-8 { margin-bottom: var(--space-8); }

/* Text */
.text-muted { color: var(--color-text-muted); }
.text-subtle { color: var(--color-text-subtle); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-center { text-align: center; }
.mono { font-family: var(--font-mono); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nowrap { white-space: nowrap; }

/* Layout */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); } .gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); }
.flex-1 { flex: 1; }
.hidden { display: none !important; }
.relative { position: relative; }
.full { width: 100%; }

/* Reveal-on-scroll (driven by IntersectionObserver in JS) */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out); }
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal][data-reveal-delay="1"] { transition-delay: 60ms; }
[data-reveal][data-reveal-delay="2"] { transition-delay: 120ms; }
[data-reveal][data-reveal-delay="3"] { transition-delay: 180ms; }
[data-reveal][data-reveal-delay="4"] { transition-delay: 240ms; }

/* ── Keyframes ── */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: -100% 0; } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(8px) scale(0.98); } to { opacity: 1; transform: none; } }
@keyframes toast-in { from { opacity: 0; transform: translateX(20px) scale(0.96); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateX(20px); } }
@keyframes indeterminate { 0% { transform: translateX(-100%); } 100% { transform: translateX(350%); } }
@keyframes float { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(20px, 30px); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }