/* ═══════════════════════════════════════════════════════════════════
   TAZIKY — SHARED SHELL STYLES
   Design tokens + chrome (header, nav, theme toggle, CTA, page hero,
   page content, compact footer) used by both the SPA and the blog.
   Loaded directly via <link> from public/, served at /taz-shell.css.
   ═══════════════════════════════════════════════════════════════════ */

/* ─── DESIGN TOKENS ─────────────────────────────────────────────── */

:root,
[data-theme="light"] {
  /* Backgrounds */
  --bg:          #FFFFFF;
  --surface:     #F4F4F4;
  --surface-2:   #ECECEC;
  --surface-3:   #E0E0E0;

  /* Borders */
  --border:      #E5E5E5;
  --border-hi:   #D4D4D4;
  --border-strong:#000000;

  /* Text */
  --text-1:      #000000;
  --text-2:      #4A4A4A;
  --text-3:      #8A8A8A;

  /* Accent — Audi red */
  --accent:      #BB0A30;
  --accent-hov:  #E40521;
  --accent-dim:  rgba(187, 10, 48, 0.08);

  /* Status */
  --success:     #1B7C42;
  --success-dim: rgba(27, 124, 66, 0.1);
  --danger:      #D32F2F;
  --danger-dim:  rgba(211, 47, 47, 0.1);
  --info:        #1565C0;
  --info-dim:    rgba(21, 101, 192, 0.1);

  /* Inverse (for buttons against accent) */
  --on-accent:   #FFFFFF;
  --on-text-1:   #FFFFFF; /* text color when bg is text-1 */

  /* Theme transition */
  --theme-transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

[data-theme="dark"] {
  /* Backgrounds */
  --bg:          #000000;
  --surface:     #0E0E10;
  --surface-2:   #18181B;
  --surface-3:   #232326;

  /* Borders */
  --border:      #232326;
  --border-hi:   #303033;
  --border-strong:#FFFFFF;

  /* Text */
  --text-1:      #FFFFFF;
  --text-2:      #B5B5B7;
  --text-3:      #6F6F73;

  /* Accent — brighter for dark */
  --accent:      #F50537;
  --accent-hov:  #FF3056;
  --accent-dim:  rgba(245, 5, 55, 0.1);

  /* Status */
  --success:     #2EE6A1;
  --success-dim: rgba(46, 230, 161, 0.1);
  --danger:      #FF5252;
  --danger-dim:  rgba(255, 82, 82, 0.1);
  --info:        #60A5FA;
  --info-dim:    rgba(96, 165, 250, 0.1);

  --on-accent:   #FFFFFF;
  --on-text-1:   #000000;
}

:root {
  /* Typography */
  --font-body: 'Hanken Grotesk', 'Helvetica Neue', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'JetBrains Mono', 'Courier New', monospace;

  /* Geometry — sharp Audi corners */
  --radius:    2px;
  --radius-lg: 2px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --fast: 0.15s var(--ease);
  --mid:  0.28s var(--ease);

  /* Layout */
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --max-w:  1440px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background-color: var(--bg);
  color: var(--text-1);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.55;
  min-height: 100vh;
  transition: var(--theme-transition);
}

/* Selection */
::selection { background: var(--accent); color: var(--on-accent); }

/* Scrollbar */
::-webkit-scrollbar             { width: 8px; height: 8px; }
::-webkit-scrollbar-track       { background: var(--bg); }
::-webkit-scrollbar-thumb       { background: var(--border-hi); }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ─── HEADER ─────────────────────────────────────────────────────── */
.taz-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2.5rem;
  padding: 1rem var(--gutter);
  border-bottom: 1px solid transparent;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  transition: var(--theme-transition), border-color 0.2s ease, padding 0.2s ease;
}

.taz-header.is-scrolled {
  border-bottom-color: var(--border);
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.taz-logo {
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-1);
  text-decoration: none;
  line-height: 1;
  transition: var(--theme-transition);
}
.taz-logo .logo-mark { color: var(--accent); }

.taz-nav-primary {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  justify-self: start;
  margin-left: 1.25rem;
}

.taz-nav-primary .nav-link {
  position: relative;
  padding: 0.65rem 1rem;
  color: var(--text-2);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--fast);
}
.taz-nav-primary .nav-link:hover { color: var(--text-1); }

.taz-nav-primary .nav-link.active {
  color: var(--text-1);
  font-weight: 700;
}
.taz-nav-primary .nav-link.active::after {
  content: '';
  position: absolute;
  left: 1rem; right: 1rem;
  bottom: 0.2rem;
  height: 2px;
  background: var(--accent);
}

.taz-nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Theme toggle */
.theme-toggle {
  width: 40px; height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  color: var(--text-1);
  cursor: pointer;
  font-size: 1rem;
  transition: var(--theme-transition), border-color var(--fast), background var(--fast);
}
.theme-toggle:hover {
  background: var(--surface);
  border-color: var(--text-1);
}
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: inline-block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: inline-block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* CTA in header */
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.1rem;
  background: var(--text-1);
  color: var(--on-text-1);
  border: 1px solid var(--text-1);
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: var(--theme-transition), background var(--fast), color var(--fast), transform var(--fast);
}
.btn-cta:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  transform: translateY(-1px);
}

/* Header scroll-state alert (API offline) */
.taz-header .alert {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 0.85rem;
  padding: 0.6rem 0.9rem;
}

/* ─── SHARED PAGE LAYOUT (auth/admin/premium/blog/etc) ──────────── */
.taz-page-hero {
  padding: clamp(2.25rem, 4.5vw, 3.5rem) var(--gutter) clamp(1.75rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--border);
}
.taz-page-hero-inner { max-width: var(--max-w); margin: 0 auto; }

.taz-page-hero .eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.12em;
  color: var(--text-3); text-transform: uppercase;
  padding: 0.35rem 0.75rem; border: 1px solid var(--border-hi); border-radius: 100px;
  margin-bottom: 1.1rem;
}
.taz-page-hero .eyebrow .accent { color: var(--accent); }
.taz-page-hero h1 {
  font-family: var(--font-body); font-weight: 900; letter-spacing: -0.035em; line-height: 0.98;
  font-size: clamp(1.85rem, 4.5vw, 3rem); color: var(--text-1); margin: 0;
}
.taz-page-hero h1 .dot { color: var(--accent); }
.taz-page-hero .lede {
  margin-top: 0.9rem; color: var(--text-2); font-size: clamp(0.98rem, 1.2vw, 1.1rem);
  max-width: 38rem; line-height: 1.55;
}

.taz-page-content {
  padding: clamp(1.75rem, 3vw, 2.75rem) var(--gutter) clamp(3rem, 6vw, 5rem);
  max-width: var(--max-w); margin: 0 auto;
}
.taz-page-content--narrow { max-width: 640px; }
.taz-page-content--wide   { max-width: 1100px; }

/* Compact page footer for sub-pages */
.taz-footer-min {
  border-top: 1px solid var(--border);
  padding: 1.5rem var(--gutter);
  font-size: 0.82rem; color: var(--text-3);
}
.taz-footer-min-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.75rem;
}
.taz-footer-min a { color: var(--text-2); text-decoration: none; }
.taz-footer-min a:hover { color: var(--accent); }
.taz-footer-min .footer-mono { font-family: var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.75rem; }

/* ─── RESPONSIVE (shell pieces only) ─────────────────────────────── */
@media (max-width: 768px) {
  .taz-header {
    grid-template-columns: 1fr auto;
    gap: 0.5rem;
  }
  .taz-nav-primary { display: none; }
}

@media (max-width: 540px) {
  .btn-cta span { display: none; }
}