/* ================================================================
   light_styles.css — ClawDrive · Platinum Elegance Light Theme
   ================================================================ */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Design Tokens ───────────────────────────────────────────── */
:root {
  --bg-deep: #f2f3f5;
  --bg-surface: rgba(255,255,255,0.7);
  --bg-card: rgba(255,255,255,0.65);
  --bg-card-hover: rgba(255,255,255,0.85);
  --border: rgba(0,0,0,0.06);
  --border-hover: rgba(0,0,0,0.12);
  --accent: #c4661a;
  --accent-soft: #d9813e;
  --accent2: #0a8f7f;
  --silver: #6b7a8d;
  --silver-bright: #3a4555;
  --platinum: #8c96a4;
  --text-primary: #1e2530;
  --text-secondary: #5a6577;
  --text-dim: #99a3b0;
  --grad: linear-gradient(135deg, #c4661a, #a34a10);
  --grad-silver: linear-gradient(135deg, #c8cfd8, #e8ecf0, #c8cfd8);
  --surface: rgba(0,0,0,0.025);
  --surface2: rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.05), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.07), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.03);
  --shadow-card-hover: 0 16px 48px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.04);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Rajdhani', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-deep);
  min-height: 100vh;
  position: relative;
}

/* Ambient radial glows — soft platinum warmth */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -5%, rgba(200,210,220,0.35), transparent 60%),
    radial-gradient(ellipse 50% 40% at 5% 95%, rgba(196,102,26,0.04), transparent 50%),
    radial-gradient(ellipse 50% 40% at 95% 95%, rgba(10,143,127,0.03), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Subtle linen texture overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,0,0,0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.012) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.18); }

/* ── Animations ──────────────────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

/* ── Site Header ─────────────────────────────────────────────── */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 2.5rem;
  background: rgba(242,243,245,0.82);
  backdrop-filter: blur(30px) saturate(1.6);
  -webkit-backdrop-filter: blur(30px) saturate(1.6);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(196,102,26,0.15) 35%, rgba(10,143,127,0.1) 65%, transparent);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

/* ── Logo ────────────────────────────────────────────────────── */
.logo-icon {
  font-size: 0;
  color: transparent;
  overflow: hidden;
  display: inline-block;
  width: 42px;
  height: 38px;
  background: url("logo.svg") center / contain no-repeat;
  filter: drop-shadow(0 1px 4px rgba(196,102,26,0.2));
  transition: filter 0.3s;
}

.logo:hover .logo-icon {
  filter: drop-shadow(0 2px 10px rgba(196,102,26,0.35));
}

.logo-text {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, #8b5a2b, #c4661a, #a0522d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.04em;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  padding: 0.6rem 1.35rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.25s;
  font-family: 'Rajdhani', sans-serif;
  letter-spacing: 0.04em;
}

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 2px 12px rgba(196,102,26,0.15);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(196,102,26,0.22);
}

.btn-secondary {
  background: #fff;
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.btn-launch {
  display: inline-block;
  padding: 0.55rem 1.6rem;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(135deg, #c4661a, #a34a10);
  border: 1px solid rgba(196,102,26,0.2);
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  box-shadow: 0 2px 16px rgba(196,102,26,0.12), inset 0 1px 0 rgba(255,255,255,0.18);
}

.btn-launch::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  background-size: 200% 100%;
  animation: shimmer 3s linear infinite;
}

.btn-launch:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 24px rgba(196,102,26,0.18), 0 8px 28px rgba(163,74,16,0.1);
}

/* ── Loading / Error ─────────────────────────────────────────── */
.loading {
  text-align: center;
  padding: 5rem 1rem;
  color: var(--text-dim);
  font-size: 1.1rem;
}

.error {
  text-align: center;
  padding: 3rem 1rem;
  color: #c0392b;
}

/* ── Markdown Content Container ──────────────────────────────── */
.md-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2.5rem 6rem;
  position: relative;
  z-index: 1;
}

/* ================================================================
   Headings
   ================================================================ */

/* Hero h1 — brushed platinum shimmer */
.h1_wrapper {
  margin-bottom: 2rem;
  text-align: center;
  padding: 4.5rem 0 1.5rem;
}
.h1_wrapper h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #2a3240 0%, #6b7a8d 25%, #1e2530 50%, #8c96a4 75%, #2a3240 100%);
  background-size: 300% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 8s linear infinite;
}

.h2_wrapper {
  margin-bottom: 1.25rem;
}
.h2_wrapper h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  padding-bottom: 0.45rem;
  border-bottom: 2px solid;
  border-image: linear-gradient(90deg, var(--accent), var(--accent2), transparent) 1;
  display: inline-block;
  letter-spacing: 0.01em;
}

.h3_wrapper {
  margin-bottom: 0.85rem;
}
.h3_wrapper h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--silver-bright);
  letter-spacing: 0.01em;
}

.h4_wrapper {
  margin-bottom: 0.55rem;
}
.h4_wrapper h4 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--silver);
  letter-spacing: 0.02em;
}

.h5_wrapper h5 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.h6_wrapper h6 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ================================================================
   Paragraphs
   ================================================================ */
.p_wrapper {
  margin-bottom: 1.35rem;
}
.p_wrapper p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

/* Hero subtitle — centered under h1 */
.h1_wrapper + .p_wrapper {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}
.h1_wrapper + .p_wrapper p {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* ================================================================
   Images
   ================================================================ */
.img_wrapper {
  margin: 2rem 0;
  text-align: center;
}
.img_wrapper img {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.inline-image {
  max-width: 100%;
  border-radius: 10px;
  vertical-align: middle;
}

/* ================================================================
   Code
   ================================================================ */
.code_wrapper {
  margin: 1.75rem 0;
}
.code_wrapper pre {
  background: rgba(255,255,255,0.7);
  color: #3a4555;
  padding: 1.5rem 1.75rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.65;
  box-shadow: var(--shadow-sm);
}
.code_wrapper pre code {
  font-family: "Fira Code", "Cascadia Code", "JetBrains Mono", monospace;
}

.inline-code {
  background: rgba(0,0,0,0.04);
  padding: 0.2em 0.5em;
  border-radius: 5px;
  font-size: 0.88em;
  font-family: "Fira Code", "Cascadia Code", monospace;
  color: var(--accent);
  border: 1px solid rgba(0,0,0,0.05);
}

/* ================================================================
   Lists
   ================================================================ */
.list_wrapper {
  margin: 1.25rem 0 1.5rem;
}
.list_wrapper ul,
.list_wrapper ol {
  padding-left: 1.75rem;
}
.list_wrapper li {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
}
.list_wrapper ul li::marker {
  color: var(--accent);
}
.list_wrapper ol li::marker {
  color: var(--accent2);
  font-weight: 700;
}

/* ================================================================
   Blockquotes — callout panels
   ================================================================ */
.blockquote_wrapper {
  margin: 1.75rem 0;
}
.blockquote_wrapper blockquote {
  border-left: 3px solid var(--accent);
  padding: 1.15rem 1.6rem;
  background: linear-gradient(135deg, rgba(196,102,26,0.03), rgba(10,143,127,0.02));
  border-radius: 0 14px 14px 0;
  border-top: 1px solid rgba(196,102,26,0.06);
  border-right: 1px solid rgba(196,102,26,0.04);
  border-bottom: 1px solid rgba(196,102,26,0.04);
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.8;
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-sm);
}

/* ================================================================
   Tables
   ================================================================ */
.table_wrapper {
  margin: 1.75rem 0;
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  background: rgba(255,255,255,0.5);
}
.table_wrapper table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.table_wrapper th,
.table_wrapper td {
  padding: 0.75rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.table_wrapper th {
  background: rgba(0,0,0,0.025);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--silver-bright);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.table_wrapper tbody tr:hover {
  background: rgba(0,0,0,0.015);
}

/* ================================================================
   HR — gradient divider
   ================================================================ */
.hr_wrapper {
  margin: 3.5rem 0;
}
.hr_wrapper hr {
  border: none;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0,0,0,0.06),
    var(--accent),
    rgba(10,143,127,0.25),
    rgba(0,0,0,0.06),
    transparent
  );
}

/* ================================================================
   Section Wrappers
   ================================================================ */
.section_lv2_wrapper {
  margin: 4.5rem 0;
  padding: 0;
}
.section_lv2_wrapper:first-child {
  margin-top: 0;
}

.section_lv3_wrapper {
  margin: 2rem 0;
}

.section_lv4_wrapper {
  margin: 1.5rem 0;
}

/* ── Auto-grid: lv2 → lv3 cards ─────────────────────────────── */
.section_lv2_wrapper:has(> .section_lv3_wrapper > .card-wrapper) {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.section_lv2_wrapper:has(> .section_lv3_wrapper > .card-wrapper) > :not(.section_lv3_wrapper) {
  flex: 0 0 100%;
}

.section_lv2_wrapper:has(> .section_lv3_wrapper > .card-wrapper) > .section_lv3_wrapper {
  flex: 1 1 calc(50% - 1.5rem);
  min-width: 320px;
  margin: 0;
}

/* ── Auto-grid: lv3 → lv4 cards ─────────────────────────────── */
.section_lv3_wrapper:has(> .section_lv4_wrapper > .card-wrapper) {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.section_lv3_wrapper:has(> .section_lv4_wrapper > .card-wrapper) > :not(.section_lv4_wrapper) {
  flex: 0 0 100%;
}

.section_lv3_wrapper:has(> .section_lv4_wrapper > .card-wrapper) > .section_lv4_wrapper {
  flex: 1 1 calc(50% - 1.25rem);
  min-width: 300px;
  margin: 0;
}

/* ================================================================
   Card — Frosted Silver Glass
   ================================================================ */
.card-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.75rem 2rem;
  margin: 1rem 0;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: var(--shadow-card);
}

/* Top-edge gleam — silver highlight */
.card-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 10%, rgba(255,255,255,0.8) 50%, transparent 90%);
}

/* Hover radial glow — warm amber */
.card-wrapper::after {
  content: '';
  position: absolute;
  inset: -50%;
  background: radial-gradient(circle at 50% 50%, rgba(196,102,26,0.03), transparent 50%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}

.card-wrapper:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}

.card-wrapper:hover::after {
  opacity: 1;
}

.card-wrapper .h3_wrapper,
.card-wrapper .h4_wrapper {
  margin-bottom: 0.5rem;
}

.card-wrapper .p_wrapper:last-child {
  margin-bottom: 0;
}

/* ================================================================
   Links & Inline Elements
   ================================================================ */
.md-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.3s;
}
.md-content a:hover {
  color: #a34a10;
  border-bottom-color: var(--accent);
}

.md-content strong {
  font-weight: 700;
  color: var(--text-primary);
}

.md-content em {
  font-style: italic;
}

.md-content del {
  color: var(--text-dim);
}

/* ================================================================
   Last section_lv2 → CTA panel
   ================================================================ */
.md-content > .section_lv2_wrapper:last-child {
  text-align: center;
  padding: 3.5rem 2rem;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: radial-gradient(ellipse at center top, rgba(196,102,26,0.035), transparent 60%);
  position: relative;
  box-shadow: var(--shadow-md);
}

.md-content > .section_lv2_wrapper:last-child::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(196,102,26,0.12), rgba(10,143,127,0.08), transparent);
  border-radius: 24px 24px 0 0;
}

/* ================================================================
   Responsive
   ================================================================ */
@media (max-width: 1024px) {
  .section_lv2_wrapper:has(> .section_lv3_wrapper > .card-wrapper) > .section_lv3_wrapper {
    flex: 1 1 calc(50% - 1rem);
    min-width: 280px;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 0.6rem 1.2rem;
  }
  .logo-icon {
    width: 34px;
    height: 30px;
  }
  .logo-text {
    font-size: 1.1rem;
  }

  .md-content {
    padding: 2rem 1.2rem 4rem;
  }

  .h1_wrapper {
    padding: 2.5rem 0 1rem;
  }
  .h1_wrapper h1 {
    font-size: 2.1rem;
  }
  .h1_wrapper + .p_wrapper p {
    font-size: 1.1rem;
  }
  .h2_wrapper h2 {
    font-size: 1.5rem;
  }
  .h3_wrapper h3 {
    font-size: 1.15rem;
  }

  .card-wrapper {
    padding: 1.4rem 1.25rem;
    border-radius: 14px;
  }

  .section_lv2_wrapper:has(> .section_lv3_wrapper > .card-wrapper) > .section_lv3_wrapper {
    flex: 1 1 100%;
    min-width: 0;
  }
  .section_lv3_wrapper:has(> .section_lv4_wrapper > .card-wrapper) > .section_lv4_wrapper {
    flex: 1 1 100%;
    min-width: 0;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 0.5rem 0.8rem;
  }
  .logo-icon {
    width: 30px;
    height: 26px;
  }
  .logo-text {
    font-size: 1rem;
  }

  .h1_wrapper {
    padding: 1.5rem 0 0.75rem;
  }
  .h1_wrapper h1 {
    font-size: 1.6rem;
  }
  .h1_wrapper + .p_wrapper p {
    font-size: 1rem;
  }
  .h2_wrapper h2 {
    font-size: 1.3rem;
  }

  .btn-launch {
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
  }

  .md-content > .section_lv2_wrapper:last-child {
    padding: 2rem 1rem;
  }
}


/* ================================================================
   Theme Switcher Dropdown
   ================================================================ */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.theme-label {
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0.7;
  white-space: nowrap;
}

.theme-dropdown {
  appearance: none;
  -webkit-appearance: none;
  background-color: rgba(128, 128, 128, 0.12);
  color: inherit;
  border: 1px solid rgba(128, 128, 128, 0.25);
  border-radius: 8px;
  padding: 0.4rem 2rem 0.4rem 0.75rem;
  font-size: 0.85rem;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='gray' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
}

.theme-dropdown:hover {
  border-color: rgba(128, 128, 128, 0.45);
}

.theme-dropdown:focus {
  outline: none;
  border-color: #e05a2b;
  box-shadow: 0 0 0 3px rgba(224, 90, 43, 0.15);
}

.theme-dropdown option {
  background: #fff;
  color: #1a1a1a;
}

/* ── Mobile ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .theme-label {
    display: none;
  }
  .theme-dropdown {
    font-size: 0.8rem;
    padding: 0.35rem 1.8rem 0.35rem 0.6rem;
  }
}