/* =========================================================================
   Orion Design System — Plain CSS (alternative to Tailwind)
   Generated from brand/07-design-system/DESIGN.md v0.1

   Use this file when you want CSS without a build step.
   For Tailwind, see ./tailwind.config.js + ./index.html
   ========================================================================= */

:root {
  /* ---- Surface tier ---- */
  --color-surface: #0A0E1A;
  --color-surface-dim: #080B14;
  --color-surface-bright: #1A1F2E;
  --color-surface-container-lowest: #060810;
  --color-surface-container-low: #0F1320;
  --color-surface-container: #141828;
  --color-surface-container-high: #1A1F2E;
  --color-surface-container-highest: #222740;

  /* ---- Foreground ---- */
  --color-on-surface: #EAF2FF;
  --color-on-surface-variant: #A6B2C8;
  --color-on-surface-dim: #6B7A95;

  /* ---- Brand ---- */
  --color-primary: #7AE7FF;
  --color-on-primary: #0A0E1A;
  --color-primary-container: #1A4A5C;
  --color-on-primary-container: #C2F0FF;

  --color-accent: #9D7BFF;
  --color-on-accent: #FFFFFF;
  --color-accent-container: #2A1F4D;
  --color-on-accent-container: #D7C9FF;

  /* ---- Semantic ---- */
  --color-success: #5EFFB0;
  --color-on-success: #0A1A12;
  --color-warning: #FFB454;
  --color-on-warning: #1F1300;
  --color-error: #FF6B7A;
  --color-on-error: #1F0008;
  --color-info: #4FA8FF;
  --color-on-info: #000F1F;

  /* ---- Border ---- */
  --color-outline: #3A4A6B;
  --color-outline-variant: #1F2A40;

  /* ---- Module accents ---- */
  --color-hermes: #5EFFB0;
  --color-deerflow: #FFB454;
  --color-voice-cosy: #FF6BA8;
  --color-voice-f5: #4FA8FF;
  --color-sceneworks: #FF7E5F;
  --color-openmontage: #6B8CFF;
  --color-openclaw: #E76F51;

  /* ---- Persona tints (sample) ---- */
  --color-atlas: #10B981;
  --color-lyra: #DC2626;
  --color-kai: #F59E0B;
  --color-mira: #3B82F6;
  --color-jett: #EC4899;

  /* ---- Typography ---- */
  --font-display: "Space Grotesk", Inter, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Monaco, monospace;

  /* ---- Spacing ---- */
  --space-unit: 8px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --container-max: 1280px;
  --gutter: 24px;
  --margin-mobile: 16px;
  --margin-desktop: 64px;
  --section: 80px;

  /* ---- Radius ---- */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* ---- Shadow ---- */
  --shadow-level-1: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-level-2: 0 4px 8px -2px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-level-3: 0 10px 20px -4px rgba(0, 0, 0, 0.5), 0 4px 8px -4px rgba(0, 0, 0, 0.3);
  --shadow-level-4: 0 20px 40px -8px rgba(0, 0, 0, 0.6), 0 8px 16px -4px rgba(0, 0, 0, 0.3);
  --shadow-level-5: 0 30px 60px -12px rgba(0, 0, 0, 0.7);

  /* ---- Gradients ---- */
  --gradient-primary: linear-gradient(135deg, #7AE7FF 0%, #9D7BFF 100%);
  --gradient-surface: linear-gradient(180deg, #0A0E1A 0%, #141828 100%);
  --gradient-hermes: linear-gradient(135deg, #5EFFB0 0%, #7AE7FF 100%);
  --gradient-deerflow: linear-gradient(135deg, #FFB454 0%, #FF7E5F 100%);
  --gradient-voice: linear-gradient(135deg, #FF6BA8 0%, #4FA8FF 100%);
  --gradient-sceneworks: linear-gradient(135deg, #FF7E5F 0%, #F59E0B 100%);
  --gradient-openmontage: linear-gradient(135deg, #6B8CFF 0%, #9D7BFF 100%);
  --gradient-openclaw: linear-gradient(135deg, #E76F51 0%, #DC2626 100%);

  /* ---- Motion ---- */
  --duration-fast: 150ms;
  --duration: 250ms;
  --duration-slow: 500ms;
  --duration-cinematic: 1200ms;
  --easing-cinematic: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html {
  background: var(--color-surface);
  color: var(--color-on-surface);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  background: var(--color-surface);
  min-height: 100vh;
}

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

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

/* =========================================================================
   Typography
   ========================================================================= */
.t-display-xl, .t-display-lg, .t-display-md,
.t-headline-lg, .t-headline-md, .t-headline-sm,
.t-title-lg, .t-title-md, .t-title-sm,
.t-label-lg, .t-label-md, .t-label-sm {
  font-family: var(--font-display);
  margin: 0;
  color: var(--color-on-surface);
}

.t-display-xl  { font-size: 72px; line-height: 80px; letter-spacing: -0.04em; font-weight: 700; }
.t-display-lg  { font-size: 56px; line-height: 64px; letter-spacing: -0.03em; font-weight: 700; }
.t-display-md  { font-size: 44px; line-height: 52px; letter-spacing: -0.02em; font-weight: 700; }
.t-headline-lg { font-size: 36px; line-height: 44px; letter-spacing: -0.02em; font-weight: 600; }
.t-headline-md { font-size: 28px; line-height: 36px; letter-spacing: -0.01em; font-weight: 600; }
.t-headline-sm { font-size: 22px; line-height: 30px; letter-spacing: -0.01em; font-weight: 600; }
.t-title-lg    { font-size: 20px; line-height: 28px; font-weight: 600; }
.t-title-md    { font-size: 18px; line-height: 26px; font-weight: 600; }
.t-title-sm    { font-size: 16px; line-height: 24px; font-weight: 600; }

.t-body-lg  { font-size: 18px; line-height: 28px; font-weight: 400; }
.t-body-md  { font-size: 16px; line-height: 24px; font-weight: 400; }
.t-body-sm  { font-size: 14px; line-height: 20px; font-weight: 400; }

.t-label-lg { font-family: var(--font-body); font-size: 14px; line-height: 20px; letter-spacing: 0.02em; font-weight: 500; }
.t-label-md { font-family: var(--font-body); font-size: 12px; line-height: 16px; letter-spacing: 0.04em; font-weight: 500; }
.t-label-sm { font-family: var(--font-body); font-size: 11px; line-height: 16px; letter-spacing: 0.06em; font-weight: 500; }

.t-mono-sm  { font-family: var(--font-mono); font-size: 13px; line-height: 18px; }
.t-mono-md  { font-family: var(--font-mono); font-size: 14px; line-height: 22px; }

.t-eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 16px;
  letter-spacing: 0.12em;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--color-primary);
}

.t-muted     { color: var(--color-on-surface-variant); }
.t-dim       { color: var(--color-on-surface-dim); }
.t-primary   { color: var(--color-primary); }
.t-accent    { color: var(--color-accent); }

/* Gradient text */
.t-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

/* =========================================================================
   Layout
   ========================================================================= */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--margin-mobile); }
}

.section {
  padding: var(--section) 0;
}

@media (max-width: 768px) {
  .section { padding: var(--space-3xl) 0; }
  .t-display-xl  { font-size: 44px; line-height: 52px; letter-spacing: -0.02em; }
  .t-display-lg  { font-size: 36px; line-height: 44px; letter-spacing: -0.02em; }
  .t-display-md  { font-size: 28px; line-height: 36px; }
  .t-headline-lg { font-size: 28px; line-height: 36px; }
}

/* =========================================================================
   Nav
   ========================================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--gutter);
  background: rgba(10, 14, 26, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-outline-variant);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-on-surface);
  text-decoration: none;
}

.nav-brand img { width: 32px; height: 32px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-on-surface-variant);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--duration) var(--easing-cinematic);
}

.nav-links a:hover { color: var(--color-on-surface); text-decoration: none; }

@media (max-width: 768px) {
  .nav-links { display: none; }
}

/* =========================================================================
   Buttons
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--duration) var(--easing-cinematic);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-level-1);
}

.btn-primary:hover {
  box-shadow: var(--shadow-level-2), 0 0 24px rgba(122, 231, 255, 0.4);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-surface-container-high);
  color: var(--color-on-surface);
  border-color: var(--color-outline);
}

.btn-secondary:hover {
  background: var(--color-surface-container-highest);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background: var(--color-primary-container);
  text-decoration: none;
}

/* =========================================================================
   Hero
   ========================================================================= */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: var(--space-4xl) 0;
  overflow: hidden;
  background: var(--gradient-surface);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(122, 231, 255, 0.12), transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(157, 123, 255, 0.10), transparent 50%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
  position: relative;
}

.hero-mark {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-mark img { width: 100%; max-width: 360px; height: auto; }

.hero-content { text-align: center; max-width: 880px; margin: 0 auto; }

.hero h1 {
  margin: 0 0 var(--space-lg);
}

.hero p.lead {
  font-size: 20px;
  line-height: 32px;
  color: var(--color-on-surface-variant);
  margin: 0 0 var(--space-2xl);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: inline-flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* =========================================================================
   Constellation (modules) section
   ========================================================================= */
.constellation {
  background: var(--color-surface);
}

.constellation-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.constellation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 1024px) {
  .constellation-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .constellation-grid { grid-template-columns: 1fr; }
}

.module-card {
  background: var(--color-surface-container);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--duration) var(--easing-cinematic);
  position: relative;
  overflow: hidden;
}

.module-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--module-gradient, transparent);
  opacity: 0;
  transition: opacity var(--duration) var(--easing-cinematic);
  pointer-events: none;
}

.module-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-outline);
  box-shadow: var(--shadow-level-3);
}

.module-card:hover::before { opacity: 0.08; }

.module-mascot {
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--module-color, var(--color-surface-container-high));
  box-shadow: 0 0 0 1px var(--color-outline-variant), 0 0 24px var(--module-glow, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-on-primary);
}

.module-card[data-module="hermes"]       { --module-color: var(--color-hermes);      --module-glow: rgba(94, 255, 176, 0.3);   --module-gradient: var(--gradient-hermes); }
.module-card[data-module="deerflow"]     { --module-color: var(--color-deerflow);    --module-glow: rgba(255, 180, 84, 0.3);   --module-gradient: var(--gradient-deerflow); }
.module-card[data-module="voice-engine"] { --module-color: var(--color-voice-cosy);  --module-glow: rgba(255, 107, 168, 0.3);  --module-gradient: var(--gradient-voice); }
.module-card[data-module="sceneworks"]   { --module-color: var(--color-sceneworks);  --module-glow: rgba(255, 126, 95, 0.3);   --module-gradient: var(--gradient-sceneworks); }
.module-card[data-module="openmontage"]  { --module-color: var(--color-openmontage); --module-glow: rgba(107, 140, 255, 0.3);  --module-gradient: var(--gradient-openmontage); }
.module-card[data-module="openclaw"]     { --module-color: var(--color-openclaw);    --module-glow: rgba(231, 111, 81, 0.3);   --module-gradient: var(--gradient-openclaw); }

.module-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-on-surface);
  margin: 0 0 var(--space-xs);
}

.module-role {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-on-surface-dim);
  margin: 0 0 var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.module-tagline {
  font-size: 16px;
  line-height: 24px;
  color: var(--color-on-surface-variant);
  margin: 0;
}

/* =========================================================================
   Personas section
   ========================================================================= */
.personas {
  background: var(--gradient-surface);
}

.personas-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.personas-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 1024px) {
  .personas-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .personas-grid { grid-template-columns: repeat(2, 1fr); }
}

.persona-card {
  background: var(--color-surface-container);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--duration) var(--easing-cinematic);
}

.persona-card:hover {
  border-color: var(--persona-tint);
  transform: translateY(-2px);
  box-shadow: var(--shadow-level-2), 0 0 32px var(--persona-glow);
}

.persona-card[data-persona="atlas"] { --persona-tint: var(--color-atlas); --persona-glow: rgba(16, 185, 129, 0.2); }
.persona-card[data-persona="lyra"]  { --persona-tint: var(--color-lyra);  --persona-glow: rgba(220, 38, 38, 0.2); }
.persona-card[data-persona="kai"]   { --persona-tint: var(--color-kai);   --persona-glow: rgba(245, 158, 11, 0.2); }
.persona-card[data-persona="mira"]  { --persona-tint: var(--color-mira);  --persona-glow: rgba(59, 130, 246, 0.2); }
.persona-card[data-persona="jett"]  { --persona-tint: var(--color-jett);  --persona-glow: rgba(236, 72, 153, 0.2); }

.persona-avatar {
  width: 96px;
  height: 96px;
  border-radius: var(--radius-full);
  border: 2px solid var(--persona-tint);
  margin: 0 auto var(--space-md);
  overflow: hidden;
  background: var(--color-surface-container-high);
  box-shadow: 0 0 16px var(--persona-glow);
}

.persona-avatar img { width: 100%; height: 100%; object-fit: cover; }

.persona-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-on-surface);
  margin: 0 0 var(--space-xs);
}

.persona-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--persona-tint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 var(--space-md);
}

.persona-tagline {
  font-size: 13px;
  line-height: 20px;
  color: var(--color-on-surface-variant);
  margin: 0;
  font-style: italic;
}

/* =========================================================================
   Promise section
   ========================================================================= */
.promise {
  background: var(--color-surface);
}

.promise-header { text-align: center; margin-bottom: var(--space-3xl); }

.promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

@media (max-width: 1024px) { .promise-grid { grid-template-columns: 1fr; } }

.promise-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
}

.promise-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 var(--space-md);
  color: var(--color-on-surface);
}

.promise-card p {
  color: var(--color-on-surface-variant);
  font-size: 16px;
  line-height: 26px;
  margin: 0;
}

.promise-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  margin-bottom: var(--space-lg);
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-on-primary);
}

/* =========================================================================
   Footer
   ========================================================================= */
.footer {
  border-top: 1px solid var(--color-outline-variant);
  padding: var(--space-2xl) 0;
  text-align: center;
  color: var(--color-on-surface-dim);
  font-size: 14px;
}

.footer .container { display: flex; flex-direction: column; align-items: center; gap: var(--space-md); }

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-on-surface);
  text-decoration: none;
}

.footer-brand img { width: 24px; height: 24px; }

.footer-tagline {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--color-on-surface-variant);
  font-style: italic;
}

/* =========================================================================
   Utilities
   ========================================================================= */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.text-center { text-align: center; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }