/* ==========================================================================
   api-flow-client — Official Website Stylesheet
   Designed for cPanel & Static Hosting
   ========================================================================== */

/* ─── CSS Variables & Design Tokens ────────────────────────────────────── */
:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-base: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.3);
  --border-glow: rgba(56, 189, 248, 0.4);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --brand-cyan: #38bdf8;
  --brand-indigo: #6366f1;
  --brand-purple: #a855f7;
  --brand-pink: #ec4899;
  
  --accent-gradient: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #a855f7 100%);
  --accent-glow: 0 0 35px rgba(99, 102, 241, 0.35);
  --paypal-color: #0070ba;
  --paypal-hover: #005ea6;
  --paypal-gradient: linear-gradient(135deg, #0070ba 0%, #003087 100%);

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  --container-max: 1240px;
  --header-height: 72px;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(248, 250, 252, 0.95);

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-highlight: rgba(99, 102, 241, 0.3);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --accent-glow: 0 0 25px rgba(99, 102, 241, 0.15);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-main);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 32px);
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-base);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

code, pre {
  font-family: var(--font-mono);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ─── Background Ambient Effects ───────────────────────────────────────── */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: -2;
  opacity: 0.45;
  transition: opacity var(--transition-slow);
}

.bg-glow-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, rgba(56, 189, 248, 0) 70%);
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
}

.bg-glow-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.3) 0%, rgba(236, 72, 153, 0) 70%);
  bottom: 20%;
  right: -100px;
}

.bg-grid-pattern {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8) 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8) 0%, transparent 80%);
  pointer-events: none;
  z-index: -1;
}

[data-theme="light"] .bg-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

/* ─── Announcement Bar ─────────────────────────────────────────────────── */
.announcement-bar {
  background: linear-gradient(90deg, rgba(56, 189, 248, 0.15), rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.15));
  border-bottom: 1px solid var(--border-subtle);
  padding: 9px 0;
  font-size: 0.875rem;
  text-align: center;
  position: relative;
  z-index: 40;
}

.announcement-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.badge-pill {
  background: var(--brand-indigo);
  color: #ffffff;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.announcement-text {
  color: var(--text-main);
}

.announcement-link {
  color: var(--brand-cyan);
  font-weight: 600;
  transition: opacity var(--transition-fast);
}

.announcement-link:hover {
  text-decoration: underline;
  opacity: 0.85;
}

/* ─── Navbar ───────────────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  height: var(--header-height);
  background: rgba(9, 13, 22, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 50;
  display: flex;
  align-items: center;
  transition: background-color var(--transition-normal);
}

[data-theme="light"] .navbar {
  background: rgba(248, 250, 252, 0.85);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo-accent {
  color: var(--brand-cyan);
}

.version-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--border-highlight);
  color: var(--brand-indigo);
  border-radius: var(--radius-full);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link-highlight {
  color: #f43f5e !important;
  font-weight: 600;
}

.heart-icon {
  animation: pulseHeart 1.8s infinite;
}

@keyframes pulseHeart {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  color: var(--text-main);
  border-color: var(--border-highlight);
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* ─── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.925rem;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 26px;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

.btn-paypal {
  background: var(--paypal-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 112, 186, 0.3);
}

.btn-paypal:hover {
  background: var(--paypal-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(0, 112, 186, 0.45);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 20px;
}

.mobile-toggle .bar {
  width: 100%;
  height: 2.5px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ─── Hero Section ─────────────────────────────────────────────────────── */
.hero-section {
  padding: 72px 0 96px;
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--brand-cyan);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--brand-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--brand-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(56, 189, 248, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

.hero-title {
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-description strong {
  color: var(--text-main);
}

/* Install Box */
.install-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 32px;
  max-width: 520px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.install-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-subtle);
  padding: 4px 6px;
}

.install-tab {
  padding: 4px 12px;
  font-size: 0.775rem;
  font-weight: 600;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.install-tab:hover {
  color: var(--text-main);
}

.install-tab.active {
  background: var(--bg-surface-elevated);
  color: var(--brand-cyan);
}

.install-command {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-base);
  border-radius: calc(var(--radius-md) - 4px);
}

.install-command code {
  color: #38bdf8;
  font-size: 0.95rem;
  font-weight: 500;
}

.btn-copy {
  color: var(--text-muted);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-copy:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
}

.check-icon { display: none; color: #10b981; }
.btn-copy.copied .copy-icon { display: none; }
.btn-copy.copied .check-icon { display: block; }

.copy-tooltip {
  position: absolute;
  top: -30px;
  right: 0;
  background: #10b981;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  opacity: 0;
  transform: translateY(4px);
  transition: all var(--transition-fast);
  pointer-events: none;
}

.btn-copy.copied .copy-tooltip {
  opacity: 1;
  transform: translateY(0);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ─── Hero Code Window Mockup ───────────────────────────────────────────── */
.code-window {
  background: #0b0f19;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(99, 102, 241, 0.15);
  font-size: 0.875rem;
}

.window-header {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.window-controls {
  display: flex;
  gap: 8px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background-color: #ef4444; }
.dot-yellow { background-color: #f59e0b; }
.dot-green { background-color: #10b981; }

.window-title {
  color: var(--text-dim);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

.window-badge {
  font-size: 0.725rem;
  font-weight: 600;
  padding: 2px 8px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--brand-cyan);
  border-radius: var(--radius-sm);
}

.window-body {
  padding: 20px;
  overflow-x: auto;
  color: #e2e8f0;
  line-height: 1.65;
}

.window-footer {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border-subtle);
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.badge-tag {
  color: var(--brand-cyan);
  font-weight: 700;
  margin-right: 4px;
}

/* Syntax Highlighting Tokens */
.token-keyword { color: #c084fc; font-weight: 600; }
.token-function { color: #60a5fa; }
.token-string { color: #34d399; }
.token-comment { color: #64748b; font-style: italic; }
.token-boolean { color: #f472b6; }
.token-number { color: #fbbf24; }
.token-type { color: #38bdf8; }

/* ─── Metrics Ribbon ───────────────────────────────────────────────────── */
.metrics-ribbon {
  padding: 32px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(15, 23, 42, 0.4);
}

.metrics-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.metric-card {
  text-align: center;
  padding: 16px;
}

.metric-value {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
  margin-bottom: 6px;
  letter-spacing: -0.03em;
}

.metric-unit {
  font-size: 1.25rem;
  color: var(--brand-cyan);
}

.metric-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.metric-desc {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ─── Section Header ───────────────────────────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-indigo);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* ─── Features Grid ────────────────────────────────────────────────────── */
.features-section {
  padding: 110px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.icon-auth { background: rgba(99, 102, 241, 0.15); color: #818cf8; }
.icon-cache { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.icon-retry { background: rgba(168, 85, 247, 0.15); color: #c084fc; }
.icon-react { background: rgba(6, 182, 212, 0.15); color: #22d3ee; }
.icon-ssr { background: rgba(244, 63, 94, 0.15); color: #fb7185; }
.icon-adapter { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.icon-upload { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.icon-page { background: rgba(236, 72, 153, 0.15); color: #f472b6; }

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  color: var(--text-dim);
}

/* ─── Interactive Simulator ────────────────────────────────────────────── */
.simulator-section {
  padding: 96px 0;
  background: rgba(15, 23, 42, 0.35);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.simulator-wrapper {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.simulator-controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sim-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  text-align: left;
  transition: all var(--transition-normal);
}

.sim-btn:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--border-highlight);
  transform: translateX(4px);
}

.sim-btn.active {
  background: rgba(56, 189, 248, 0.12);
  border-color: var(--brand-cyan);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
}

.sim-btn-icon {
  font-size: 1.5rem;
}

.sim-btn-content strong {
  display: block;
  font-size: 0.975rem;
  color: var(--text-main);
}

.sim-btn-content small {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.simulator-terminal {
  background: #070a13;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 380px;
}

.terminal-header {
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #334155;
}

.terminal-title {
  font-size: 0.775rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.btn-terminal-clear {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
}

.btn-terminal-clear:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.1);
}

.terminal-output {
  padding: 18px;
  overflow-y: auto;
  flex-grow: 1;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
}

.log-entry {
  margin-bottom: 8px;
  animation: fadeIn 0.2s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.log-time { color: var(--text-dim); margin-right: 8px; }
.log-info { color: #38bdf8; }
.log-success { color: #10b981; }
.log-warn { color: #f59e0b; }
.log-err { color: #ef4444; }
.log-tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-right: 6px;
}
.tag-cache { background: rgba(56, 189, 248, 0.2); color: #38bdf8; }
.tag-auth { background: rgba(168, 85, 247, 0.2); color: #c084fc; }
.tag-retry { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }

/* ─── Code Examples Showcase ───────────────────────────────────────────── */
.examples-section {
  padding: 110px 0;
}

.code-showcase-card {
  background: #0b0f19;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.code-tabs-header {
  display: flex;
  gap: 2px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-subtle);
  padding: 6px 12px 0;
  overflow-x: auto;
}

.code-tab {
  padding: 12px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.code-tab:hover {
  color: var(--text-main);
}

.code-tab.active {
  color: var(--brand-cyan);
  border-bottom-color: var(--brand-cyan);
}

.code-tabs-content {
  padding: 24px;
}

.code-panel {
  display: none;
}

.code-panel.active {
  display: block;
}

.code-panel pre {
  margin: 0;
  font-size: 0.925rem;
  line-height: 1.7;
  overflow-x: auto;
}

/* ─── Comparison Table ─────────────────────────────────────────────────── */
.comparison-section {
  padding: 96px 0;
  background: rgba(15, 23, 42, 0.3);
}

.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.comparison-table th,
.comparison-table td {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  background: rgba(255, 255, 255, 0.03);
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.col-highlight {
  background: rgba(99, 102, 241, 0.08) !important;
  color: var(--brand-cyan);
  font-weight: 600;
}

.check { color: #10b981; font-weight: 700; }
.cross { color: #64748b; }
.badge-green { background: rgba(16, 185, 129, 0.15); color: #10b981; border-radius: var(--radius-sm); padding: 2px 8px; }

/* ─── Support & Donate Section (PayPal Wala) ────────────────────────────── */
.donate-section {
  padding: 110px 0;
}

.donate-card {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 41, 59, 0.7) 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-xl);
  padding: 64px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4), var(--accent-glow);
}

.donate-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fb7185;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.donate-title {
  font-size: clamp(2.2rem, 3.8vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 20px;
}

.donate-description {
  max-width: 720px;
  margin: 0 auto 48px;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.donate-description strong {
  color: var(--text-main);
}

/* Donation Tiers Grid */
.donation-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 960px;
  margin: 0 auto 40px;
}

.tier-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  transition: all var(--transition-normal);
}

.tier-card:hover {
  transform: translateY(-6px);
  border-color: var(--paypal-color);
  box-shadow: 0 16px 36px rgba(0, 112, 186, 0.25);
}

.tier-card-popular {
  border-color: var(--brand-indigo);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.12) 0%, var(--bg-surface) 100%);
}

.tier-badge {
  position: absolute;
  top: -12px;
  background: var(--accent-gradient);
  color: #ffffff;
  font-size: 0.725rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
}

.tier-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.tier-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
  margin-bottom: 6px;
}

.tier-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-cyan);
  margin-bottom: 12px;
}

.tier-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 24px;
  flex-grow: 1;
}

.tier-btn {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  width: 100%;
  transition: all var(--transition-fast);
}

.tier-card:hover .tier-btn {
  background: var(--paypal-gradient);
  border-color: transparent;
  color: #ffffff;
}

/* Custom Donate Box */
.donate-custom-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 720px;
  margin: 0 auto 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.custom-paypal-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.paypal-logo-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #38bdf8;
  font-size: 0.95rem;
}

.paypal-logo-badge strong {
  color: var(--text-main);
}

.sponsor-perks {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.perk-check {
  color: #10b981;
  font-weight: 800;
  margin-right: 4px;
}

/* ─── FAQ Section ──────────────────────────────────────────────────────── */
.faq-section {
  padding: 96px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: all var(--transition-normal);
}

.faq-item[open] {
  border-color: var(--border-highlight);
  background: var(--bg-surface-elevated);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-arrow {
  color: var(--text-dim);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-arrow {
  transform: rotate(180deg);
  color: var(--brand-cyan);
}

.faq-answer {
  padding-top: 14px;
  color: var(--text-muted);
  font-size: 0.975rem;
  line-height: 1.7;
}

.faq-answer a {
  color: var(--brand-cyan);
  text-decoration: underline;
}

/* ─── Footer ───────────────────────────────────────────────────────────── */
.site-footer {
  background: #060911;
  border-top: 1px solid var(--border-subtle);
  padding: 72px 0 32px;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 64px;
  margin-bottom: 56px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-tagline {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 360px;
  margin-bottom: 24px;
}

.footer-links-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  color: var(--text-muted);
  font-size: 0.925rem;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--brand-cyan);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
}

.footer-bottom-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 16px;
}

.copyright a {
  color: var(--brand-cyan);
}

.domain-badge code {
  color: var(--brand-indigo);
  background: rgba(99, 102, 241, 0.1);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

/* ─── Responsive Media Queries ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .simulator-wrapper {
    grid-template-columns: 1fr;
  }

  .donation-tiers {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .metrics-container {
    grid-template-columns: repeat(2, 1fr);
  }

  .mobile-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
  }

  .nav-links.open {
    display: flex;
  }

  .donate-card {
    padding: 40px 20px;
  }

  .donate-custom-box {
    flex-direction: column;
    text-align: center;
  }
}