/* ============================================================
   HabitEdge Agents — shared design system (dark)
   Dark reskin of the original warm token system, mapped to the
   habitedge.app palette (#0C0C0A / #C4A55A / Plus Jakarta Sans).
   Linked by: quiz.html, custom-report.html, thank-you.html,
              about.html, privacy.html, terms.html, data-security.html
   (index.html is self-contained and does NOT use this file.)
   ============================================================ */

:root {
  /* Backgrounds */
  --color-bg-primary:  #0C0C0A;
  --color-bg-secondary:#0F0E0C;
  --color-bg-tertiary: #16150F;
  --color-bg-elevated: #131210;
  --color-bg-dark:     #0C0C0A;

  /* Surface / line scale (formerly "warm") */
  --color-warm-50:  #131210;
  --color-warm-100: rgba(255, 255, 255, 0.03);
  --color-warm-200: rgba(255, 255, 255, 0.08);
  --color-warm-300: rgba(196, 165, 90, 0.30);
  --color-warm-400: #6B6760;
  --color-warm-500: #9A9690;
  --color-warm-600: #B5B0A6;
  --color-warm-700: #D4CFC4;
  --color-warm-800: #EDEAE0;
  --color-warm-900: #FFFFFF;

  /* Text */
  --color-text-primary:   #EDEAE0;
  --color-text-secondary: #B5B0A6;
  --color-text-muted:     #9A9690;
  --color-text-light:     #6B6760;
  --color-text-white:     #FFFFFF;

  /* Accent — habitedge gold */
  --color-accent-primary:   #C4A55A;
  --color-accent-secondary: #C4A55A;
  --color-accent-tertiary:  #DAA520;
  --color-accent-soft:      #C4A55A;
  --color-accent-hover:     #D4B56A;

  /* Semantic */
  --color-success: #4ADE80;
  --color-warning: #DAA520;
  --color-error:   #E06A67;
  --color-info:    #C4A55A;

  /* Buttons */
  --color-button-primary:           #C4A55A;
  --color-button-primary-hover:     #D4B56A;
  --color-button-secondary:         transparent;
  --color-button-secondary-border:  rgba(255, 255, 255, 0.15);
  --color-button-secondary-hover:   rgba(255, 255, 255, 0.05);

  /* Shadows */
  --shadow-sm:   0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md:   0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg:   0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl:   0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(196, 165, 90, 0.15);

  /* Spacing */
  --space-xs: 4px;   --space-sm: 8px;   --space-md: 16px;
  --space-lg: 24px;  --space-xl: 32px;  --space-2xl: 48px;
  --space-3xl: 64px; --space-4xl: 96px; --space-5xl: 128px;

  /* Type sizes */
  --font-size-xs: 12px;  --font-size-sm: 14px;  --font-size-base: 16px;
  --font-size-lg: 18px;  --font-size-xl: 20px;  --font-size-2xl: 24px;
  --font-size-3xl: 30px; --font-size-4xl: 36px; --font-size-5xl: 48px;
  --font-size-6xl: 56px; --font-size-7xl: 72px;

  /* Radius */
  --radius-sm: 6px;  --radius-md: 12px; --radius-lg: 20px;
  --radius-xl: 28px; --radius-pill: 999px; --radius-full: 50%;

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-smooth: 800ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-xl);
  --header-height: 56px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  overflow-x: hidden;
  min-height: 100dvh;
}

/* Headings — Plus Jakarta (no serif), tight tracking like habitedge */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}
h1 { font-size: var(--font-size-6xl); font-weight: 800; }
h2 { font-size: var(--font-size-4xl); font-weight: 800; }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p { margin-bottom: var(--space-md); color: var(--color-text-secondary); }

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

/* Grain overlay (matches index.html) */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 900;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 220px 220px;
}

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

/* ===== Site header (matches index.html chrome) ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12, 12, 10, 0.72);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
.site-header-inner {
  max-width: var(--container-max-width); margin: 0 auto;
  height: var(--header-height); padding: 0 var(--space-lg);
  display: flex; align-items: center; justify-content: space-between;
}
.site-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.site-logo .logo-mark {
  width: 26px; height: 26px; border-radius: 6.5px;
  background: var(--color-accent-primary);
  display: flex; align-items: center; justify-content: center;
  color: #0C0C0A; font-weight: 700; font-size: 13px;
}
.site-logo .logo-text { font-weight: 600; font-size: 15px; color: var(--color-text-primary); }
.site-nav { display: flex; align-items: center; gap: var(--space-lg); }
.site-nav a {
  color: var(--color-text-muted); font-size: 13px; font-weight: 500;
  transition: color var(--transition-fast);
}
.site-nav a:hover { color: var(--color-text-primary); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-sm); font-family: inherit; font-size: var(--font-size-base);
  font-weight: 700; text-decoration: none; border: none;
  border-radius: var(--radius-pill); cursor: pointer;
  transition: all var(--transition-normal);
}
.btn-primary { background-color: var(--color-button-primary); color: #0C0C0A; padding: var(--space-md) var(--space-xl); }
.btn-primary:hover { background-color: var(--color-button-primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); color: #0C0C0A; }
.btn-secondary { background-color: var(--color-button-secondary); color: var(--color-text-primary); border: 1.5px solid var(--color-button-secondary-border); padding: calc(var(--space-md) - 1.5px) var(--space-xl); }
.btn-secondary:hover { background-color: var(--color-button-secondary-hover); border-color: rgba(255,255,255,0.3); }
.btn-ghost { background-color: transparent; color: var(--color-accent-primary); padding: var(--space-md) var(--space-xl); }
.btn-ghost:hover { background-color: rgba(196,165,90,0.08); color: var(--color-accent-hover); }
.btn-large { padding: var(--space-lg) var(--space-2xl); font-size: var(--font-size-lg); }
.btn-small { padding: var(--space-sm) var(--space-md); font-size: var(--font-size-sm); }

/* ===== Badges ===== */
.badge {
  display: inline-flex; align-items: center; gap: var(--space-xs);
  font-size: var(--font-size-xs); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
}
.badge-accent { background-color: rgba(196,165,90,0.12); color: var(--color-accent-primary); border: 1px solid rgba(196,165,90,0.28); }
.badge-success { background-color: rgba(74,222,128,0.1); color: var(--color-success); border: 1px solid rgba(74,222,128,0.2); }

/* ===== Cards ===== */
.card {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-warm-200);
  border-radius: var(--radius-lg); padding: var(--space-xl);
  box-shadow: var(--shadow-md); transition: all var(--transition-normal);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-warm-300); }
.card-featured { border: 1.5px solid var(--color-accent-primary); box-shadow: var(--shadow-xl); }

/* ===== Section header ===== */
.section-header { text-align: center; max-width: 640px; margin: 0 auto var(--space-3xl); }
.section-header-left { text-align: left; margin-left: 0; }
.section-badge {
  display: inline-block; font-size: var(--font-size-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--color-accent-primary); margin-bottom: var(--space-md);
}
.section-title {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  font-size: var(--font-size-4xl); font-weight: 800;
  color: var(--color-text-primary); margin-bottom: var(--space-md);
  line-height: 1.15; letter-spacing: -0.03em;
}
.section-subtitle { font-size: var(--font-size-lg); color: var(--color-text-secondary); line-height: 1.6; }

/* Small uppercase label (matches index.html .section-label) */
.section-label {
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--color-text-muted);
}

/* ===== Prose (legal / about) ===== */
.prose { max-width: 760px; margin: 0 auto; }
.prose h1 { font-size: var(--font-size-5xl); margin-bottom: var(--space-md); }
.prose h2 { font-size: var(--font-size-2xl); margin-top: var(--space-2xl); margin-bottom: var(--space-md); }
.prose h3 { font-size: var(--font-size-xl); margin-top: var(--space-xl); margin-bottom: var(--space-sm); }
.prose p, .prose li { color: var(--color-text-secondary); line-height: 1.78; font-size: var(--font-size-base); }
.prose ul, .prose ol { padding-left: 1.25rem; margin-bottom: var(--space-md); }
.prose li { margin-bottom: var(--space-xs); }
.prose a { color: var(--color-accent-primary); }
.prose strong { color: var(--color-text-primary); }

/* ===== Footer (matches index.html) ===== */
.site-footer { border-top: 1px solid var(--color-warm-200); margin-top: var(--space-4xl); }
.site-footer-inner {
  max-width: var(--container-max-width); margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
  font-size: 13px; color: var(--color-text-muted);
}
.site-footer-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 32px; }
.site-footer-links { display: flex; flex-wrap: wrap; gap: var(--space-md); }
.site-footer-links a { color: var(--color-text-muted); }
.site-footer-links a:hover { color: var(--color-text-primary); }
.mono { font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }

/* ===== Scroll reveal ===== */
[data-animate] { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out); }
[data-animate].animate-visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  :root { --font-size-6xl: 40px; --font-size-5xl: 36px; --font-size-4xl: 30px; --font-size-3xl: 26px; --container-padding: var(--space-md); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  [data-animate] { opacity: 1; transform: none; }
}