/* ============================================
   Indexa Marketing Website — styles.css
   Dark theme, glass morphism, gradient accents
   ============================================ */

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

:root {
  --bg-deep: #0d0d0d;
  --bg-card: rgba(255,255,255,0.03);
  --bg-card-hover: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.08);
  --glass-border-hover: rgba(226,75,74,0.3);
  --text-primary: #f0f0f0;
  --text-secondary: #999999;
  --text-muted: #666666;
  --accent: #E24B4A;
  --accent-light: #EF9F27;
  --cyan: #EF9F27;
  --green: #34d399;
  --red: #E24B4A;
  --yellow: #EF9F27;
  --gradient: linear-gradient(135deg, #E24B4A 0%, #EF9F27 100%);
  --gradient-text: linear-gradient(135deg, #E24B4A 0%, #EF9F27 100%);
  --font-sans: 'Space Grotesk', 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;
  --radius: 16px;
  --radius-sm: 10px;
  --max-w: 1200px;
  --section-pad: 120px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--accent-light); text-decoration: none; transition: color .2s; }
a:hover { color: var(--cyan); }

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

/* --- Utility --- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.accent { color: var(--accent-light); }
.cyan { color: var(--cyan); }

/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* --- Glass Card --- */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: border-color .3s, background .3s, transform .3s;
}
.glass:hover {
  border-color: var(--glass-border-hover);
  background: var(--bg-card-hover);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: background .3s, backdrop-filter .3s, box-shadow .3s;
}
.nav.scrolled {
  background: rgba(5,5,9,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--glass-border);
}
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}
.nav-logo svg { width: 32px; height: 32px; }
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--gradient);
  color: #fff !important;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  transition: opacity .2s, transform .2s;
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--section-pad) + 60px) 0 var(--section-pad);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(226,75,74,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  top: 20%; right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(34,211,238,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-content { max-width: 560px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid var(--glass-border);
  background: var(--bg-card);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}
.hero-tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--gradient);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: opacity .2s, transform .2s, box-shadow .2s;
  box-shadow: 0 4px 24px rgba(226,75,74,0.25);
}
.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(226,75,74,0.35);
  color: #fff;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: border-color .2s, background .2s, transform .2s;
}
.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(226,75,74,0.06);
  transform: translateY(-2px);
  color: var(--text-primary);
}
.hero-stats {
  display: flex;
  gap: 40px;
}
.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}
.hero-stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Terminal */
.hero-terminal {
  width: 100%;
  max-width: 520px;
  justify-self: end;
}
.terminal {
  background: rgba(10,10,18,0.9);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.03);
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.02);
}
.terminal-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }
.terminal-title {
  flex: 1;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
.terminal-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.8;
  min-height: 200px;
}
.terminal-line {
  opacity: 0;
  transform: translateY(4px);
}
.terminal-line.shown {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .4s ease, transform .4s ease;
}
.terminal-prompt { color: var(--cyan); }
.terminal-command { color: var(--text-primary); }
.terminal-success { color: var(--green); }
.terminal-check { color: var(--green); }
.terminal-cursor {
  display: inline-block;
  width: 8px; height: 18px;
  background: var(--accent-light);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* ============================================
   SECTION SHARED
   ============================================ */
section {
  padding: var(--section-pad) 0;
  position: relative;
}
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-light);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 56px;
}
.section-subtitle.center { margin-left: auto; margin-right: auto; }
.text-center { text-align: center; }

/* ============================================
   PROBLEM SECTION
   ============================================ */
.problem { background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(226,75,74,0.02) 50%, var(--bg-deep) 100%); }
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}
.problem-card {
  padding: 36px;
  position: relative;
  overflow: hidden;
}
.problem-card.before { border-color: rgba(248,113,113,0.2); }
.problem-card.before:hover { border-color: rgba(248,113,113,0.4); }
.problem-card.after { border-color: rgba(52,211,153,0.2); }
.problem-card.after:hover { border-color: rgba(52,211,153,0.4); }
.problem-card-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 18px;
}
.problem-card.before .problem-card-label { color: var(--red); }
.problem-card.after .problem-card-label { color: var(--green); }
.problem-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.problem-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 8px;
}
.problem-card code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: rgba(255,255,255,0.06);
  padding: 2px 8px;
  border-radius: 4px;
}
.problem-stat {
  font-size: 2.2rem;
  font-weight: 800;
  margin-top: 20px;
}
.problem-card.before .problem-stat { color: var(--red); }
.problem-card.after .problem-stat { color: var(--green); }

/* ============================================
   HOW IT WORKS
   ============================================ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.step-card {
  padding: 40px 32px;
  text-align: center;
  position: relative;
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E24B4A, #EF9F27);
  color: #050509;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 24px;
  -webkit-text-fill-color: #050509;
  box-shadow: 0 4px 20px rgba(226,75,74,0.3);
}
.step-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.step-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}
.step-code {
  margin-top: 18px;
  padding: 12px 16px;
  background: rgba(0,0,0,0.4);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--cyan);
  text-align: left;
  border: 1px solid rgba(255,255,255,0.04);
}
/* Arrow connectors between steps (desktop) */
.step-card:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 65px;
  right: -18px;
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  opacity: 0.3;
}

/* ============================================
   FEATURES
   ============================================ */
.features { background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(34,211,238,0.015) 50%, var(--bg-deep) 100%); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 36px 30px;
  transition: transform .3s;
}
.feature-card:hover { transform: translateY(-4px); }
.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(226,75,74,0.12), rgba(34,211,238,0.08));
  border: 1px solid rgba(226,75,74,0.15);
}
.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ============================================
   TOKEN SAVINGS
   ============================================ */
.savings-table-wrap {
  max-width: 800px;
  margin: 0 auto;
  overflow-x: auto;
}
.savings-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.savings-table th,
.savings-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
}
.savings-table th {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.savings-table td:first-child { font-weight: 600; }
.savings-table .before-val { color: var(--red); font-family: var(--font-mono); }
.savings-table .after-val { color: var(--green); font-family: var(--font-mono); }
.savings-table .savings-val {
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.savings-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ============================================
   MCP TOOLS
   ============================================ */
.tools { background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(226,75,74,0.02) 50%, var(--bg-deep) 100%); }
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.tool-card {
  padding: 28px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.tool-card:hover { transform: translateY(-2px); transition: transform .3s; }
.tool-name {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 6px;
}
.tool-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}
.tool-icon {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.15);
  font-size: 1rem;
}

/* ============================================
   QUICK START
   ============================================ */
.quickstart-block {
  max-width: 700px;
  margin: 0 auto;
}
.code-block {
  position: relative;
  background: rgba(10,10,18,0.9);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.02);
}
.code-lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.copy-btn:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.15);
}
.copy-btn.copied {
  color: var(--green);
  border-color: rgba(52,211,153,0.3);
}
.code-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.9;
  overflow-x: auto;
}
.code-body .comment { color: var(--text-muted); }
.code-body .prompt { color: var(--cyan); }
.code-body .cmd { color: var(--text-primary); }

/* ============================================
   ARCHITECTURE
   ============================================ */
.architecture { background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(34,211,238,0.015) 50%, var(--bg-deep) 100%); }
.arch-diagram {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 40px;
}
.arch-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.arch-node {
  padding: 20px 28px;
  border-radius: var(--radius-sm);
  text-align: center;
  min-width: 130px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
}
.arch-node-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.arch-node-name {
  font-size: 0.95rem;
  font-weight: 700;
}
.arch-node.highlight {
  border-color: rgba(226,75,74,0.3);
  background: rgba(226,75,74,0.06);
}
.arch-arrow {
  color: var(--text-muted);
  font-size: 1.4rem;
  flex-shrink: 0;
}
.arch-detail-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.arch-detail {
  text-align: center;
  padding: 24px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
}
.arch-detail-icon { font-size: 1.5rem; margin-bottom: 10px; }
.arch-detail-title {
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.arch-detail-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ============================================
   STATS
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  padding: 40px 24px;
  text-align: center;
}
.stat-card:hover { transform: translateY(-4px); transition: transform .3s; }
.stat-value {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ============================================
   COMPARISON
   ============================================ */
.comparison { background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(226,75,74,0.015) 50%, var(--bg-deep) 100%); }
.comparison-table-wrap {
  max-width: 900px;
  margin: 0 auto;
  overflow-x: auto;
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
}
.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
  font-size: 0.92rem;
}
.comparison-table th {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.comparison-table th:first-child { min-width: 160px; }
.comparison-table td:first-child {
  color: var(--text-secondary);
  font-weight: 500;
}
.comparison-table .col-indexa { color: var(--cyan); font-weight: 600; }
.comparison-table .check { color: var(--green); }
.comparison-table .cross { color: var(--red); opacity: 0.6; }
.comparison-table tr:hover td { background: rgba(255,255,255,0.015); }
.comparison-highlight {
  background: rgba(226,75,74,0.04) !important;
  border-left: 2px solid var(--accent);
}

/* ============================================
   CTA
   ============================================ */
.cta-section {
  padding: 100px 0 120px;
  text-align: center;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(226,75,74,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 36px;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 48px 0;
}
.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-left {
  display: flex;
  align-items: center;
  gap: 24px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--text-primary);
}
.footer-logo svg { width: 24px; height: 24px; }
.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: color .2s;
}
.footer-links a:hover { color: var(--text-primary); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 48px; }
  .hero-terminal { max-width: 100%; justify-self: start; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .arch-detail-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --section-pad: 80px; }
  .nav-links {
    display: none;
    position: fixed;
    top: 64px; left: 0; right: 0;
    background: rgba(5,5,9,0.97);
    backdrop-filter: blur(24px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--glass-border);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero h1 { font-size: 2.4rem; }
  .problem-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .step-card::after { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .arch-flow { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); }
  .arch-detail-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .comparison-table { font-size: 0.85rem; }
  .hero-stats { gap: 24px; }
  .footer .container { flex-direction: column; text-align: center; }
  .footer-left { flex-direction: column; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
  :root { --section-pad: 60px; }
  .hero h1 { font-size: 2rem; }
  .hero-buttons { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .cta-buttons { flex-direction: column; align-items: center; }
}

/* ========== NAV ICONS ========== */
.nav-icon { width: 14px; height: 14px; vertical-align: -2px; margin-right: 4px; }
.nav-star-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 8px;
  background: linear-gradient(135deg, rgba(226,75,74,0.15), rgba(34,211,238,0.15));
  border: 1px solid rgba(226,75,74,0.3);
  color: #E24B4A; font-weight: 600; font-size: 0.85rem;
  transition: all 0.3s ease;
}
.nav-star-btn:hover {
  background: linear-gradient(135deg, rgba(226,75,74,0.25), rgba(34,211,238,0.25));
  border-color: rgba(226,75,74,0.5); color: #EF9F27;
  transform: translateY(-1px); box-shadow: 0 4px 20px rgba(226,75,74,0.2);
}

/* ========== FEATURE ICON COLORS ========== */
.feature-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.feature-icon.accent { background: rgba(226,75,74,0.12); color: #E24B4A; }
.feature-icon.cyan { background: rgba(34,211,238,0.12); color: #EF9F27; }
.feature-icon.purple { background: rgba(239,159,39,0.12); color: #EF9F27; }
.feature-icon.green { background: rgba(52,211,153,0.12); color: #34d399; }
.feature-icon.yellow { background: rgba(251,191,36,0.12); color: #fbbf24; }
.feature-icon.red { background: rgba(248,113,113,0.12); color: #f87171; }
.feature-icon i, .feature-icon svg { width: 24px; height: 24px; }

/* ========== ABOUT SECTION ========== */
.about-section { padding: var(--section-pad) 0; }
.about-grid { max-width: 700px; margin: 0 auto; margin-top: 40px; }
.about-card { padding: 40px; text-align: center; }
.about-avatar { margin-bottom: 20px; }
.avatar-placeholder {
  width: 96px; height: 96px; border-radius: 50%; margin: 0 auto;
  background: linear-gradient(135deg, rgba(226,75,74,0.15), rgba(34,211,238,0.15));
  border: 2px solid rgba(226,75,74,0.3);
  display: flex; align-items: center; justify-content: center;
}
.about-card h3 { font-size: 1.5rem; font-weight: 800; color: #e4e4e7; margin-bottom: 4px; }
.about-title { color: #E24B4A; font-size: 0.9rem; font-weight: 500; margin-bottom: 16px; }
.about-bio { color: #a1a1aa; font-size: 0.9rem; line-height: 1.7; margin-bottom: 24px; }

.about-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  margin-bottom: 24px; padding: 20px; border-radius: 12px;
  background: rgba(255,255,255,0.02); border: 1px solid rgba(255,255,255,0.05);
}
.about-stats div { text-align: center; }
.about-stats span { font-size: 1.5rem; font-weight: 800; display: block; }
.about-stats small { font-size: 0.7rem; color: #71717a; text-transform: uppercase; letter-spacing: 0.05em; }

.about-highlights { margin-bottom: 24px; text-align: left; }
.about-highlight {
  display: flex; align-items: center; gap: 10px; padding: 8px 0;
  font-size: 0.9rem; color: #a1a1aa;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.about-highlight:last-child { border-bottom: none; }
.about-icon { width: 16px; height: 16px; color: #E24B4A; flex-shrink: 0; }

.about-links { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.about-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 8px; font-size: 0.85rem;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
  color: #a1a1aa; transition: all 0.2s;
}
.about-link:hover { background: rgba(226,75,74,0.1); border-color: rgba(226,75,74,0.3); color: #E24B4A; }

/* ========== GITHUB STAR SECTION ========== */
.github-star-section { padding: 60px 0; }
.github-star-card {
  max-width: 600px; margin: 0 auto; padding: 48px 32px; text-align: center;
  border: 1px solid rgba(226,75,74,0.2);
  background: linear-gradient(135deg, rgba(226,75,74,0.05), rgba(34,211,238,0.05));
}
.github-star-icon { width: 48px; height: 48px; color: #fbbf24; margin-bottom: 16px; }
.github-star-card h2 { font-size: 1.8rem; font-weight: 800; color: #e4e4e7; margin-bottom: 8px; }
.github-star-card p { color: #a1a1aa; margin-bottom: 24px; }
.btn-star {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 12px; font-weight: 700; font-size: 1rem;
  background: linear-gradient(135deg, #E24B4A, #EF9F27); color: white;
  transition: all 0.3s;
}
.btn-star:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(226,75,74,0.3); }
.star-badge { display: block; margin: 16px auto 0; }

/* ========== FOOTER ICONS ========== */
.footer-icon { width: 14px; height: 14px; vertical-align: -2px; margin-right: 3px; }
.footer-links a { display: inline-flex; align-items: center; gap: 4px; }

/* ========== RESPONSIVE: ABOUT ========== */
@media (max-width: 768px) {
  .about-card { padding: 24px; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .about-links { flex-direction: column; align-items: stretch; }
  .about-link { justify-content: center; }
  .github-star-card { padding: 32px 20px; }
  .github-star-card h2 { font-size: 1.4rem; }
}