/* -----------------------------------------------------------------
   S Desktop Email Client — Modern Landing Page Stylesheet
   Theme: Obsidian Deep Space & Neon Glassmorphism
------------------------------------------------------------------ */

:root {
  --bg-primary: #0a0c10;
  --bg-surface: #11151c;
  --bg-surface-elevated: #181d27;
  --bg-surface-hover: #1f2633;
  --bg-glass: rgba(17, 21, 28, 0.75);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-accent: rgba(99, 102, 241, 0.4);

  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-cyan: #06b6d4;
  --accent-cyan-glow: rgba(6, 182, 212, 0.25);
  --accent-violet: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.3);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 35px -5px rgba(99, 102, 241, 0.25);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Background Lights */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
}

.glow-top {
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 450px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.22), transparent 70%);
}

.glow-accent {
  top: 600px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15), transparent 70%);
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

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

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

.gradient-text {
  background: linear-gradient(135deg, #a5b4fc 0%, #38bdf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
  background: linear-gradient(135deg, #7578f3 0%, #5850ec 100%);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border-color: var(--border-medium);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

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

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(10, 12, 16, 0.8);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color 0.2s ease;
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #ffffff;
  font-family: var(--font-heading);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

.brand-text .badge {
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: #a5b4fc;
  border-radius: 999px;
  margin-left: 6px;
  font-weight: 500;
}

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

.nav-link {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: #ffffff;
}

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

/* Hero Section */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 860px;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 999px;
  margin-bottom: 24px;
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.pill-text {
  font-size: 0.85rem;
  color: #c7d2fe;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  margin-bottom: 20px;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 32px;
}

/* CLI Quick Copy Card */
.cli-prereq-card {
  max-width: 580px;
  margin: 0 auto 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.cli-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.cli-cmd-box {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  overflow-x: auto;
  gap: 8px;
}

.cli-cmd-box code {
  color: #38bdf8;
  font-size: 0.85rem;
  white-space: nowrap;
}

.btn-copy {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 0.78rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s ease;
}

.btn-copy:hover {
  background: var(--bg-surface-hover);
  color: #ffffff;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

/* Stats Row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 20px;
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
}

.stat-card {
  text-align: center;
}

.stat-val {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 700;
  color: #ffffff;
}

.stat-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Mockup Showcase Section */
.preview-section {
  padding: 60px 0 80px;
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 48px;
}

.section-tag {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  font-weight: 700;
  margin-bottom: 10px;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* App Mockup UI */
.mockup-window {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.mockup-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: #0f131a;
  border-bottom: 1px solid var(--border-subtle);
}

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

.control-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.dot-close { background-color: #ef4444; }
.dot-min { background-color: #f59e0b; }
.dot-max { background-color: #10b981; }

.titlebar-text {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-chip {
  background: var(--accent-primary);
  color: #ffffff;
  padding: 2px 8px;
  font-weight: 800;
  font-size: 0.8rem;
  border-radius: 4px;
}

.sync-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.12);
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.sync-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 6px var(--accent-emerald);
}

.kbd-shortcut {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--text-dim);
}

/* Mockup Split Layout */
.mockup-body {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: 520px;
  background: #0d1017;
}

/* Sidebar */
.mockup-sidebar {
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  background: #0b0e14;
}

.sidebar-omnibar {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.omnibar-select {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
}

.folder-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-cyan);
}

.omnibar-select select {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.85rem;
  width: 100%;
  outline: none;
  cursor: pointer;
}

.search-input-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  color: var(--text-dim);
}

.search-input-box input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 0.82rem;
  width: 100%;
  outline: none;
}

.mockup-senders {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.sender-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  cursor: pointer;
  position: relative;
  transition: background 0.15s ease;
}

.sender-card:hover {
  background: rgba(255, 255, 255, 0.03);
}

.sender-card.active {
  background: rgba(99, 102, 241, 0.12);
  border-left: 3px solid var(--accent-primary);
}

.sender-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  color: #ffffff;
  flex-shrink: 0;
}

.bg-violet { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }
.bg-cyan { background: linear-gradient(135deg, #06b6d4, #0e7490); }
.bg-emerald { background: linear-gradient(135deg, #10b981, #047857); }

.sender-meta {
  flex: 1;
  min-width: 0;
}

.sender-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sender-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.sender-time {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.sender-snippet {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.unread-badge {
  font-size: 0.7rem;
  background: var(--accent-primary);
  color: #ffffff;
  padding: 2px 6px;
  border-radius: 999px;
  font-weight: 700;
}

/* Timeline */
.mockup-timeline {
  display: flex;
  flex-direction: column;
  background: #0e121a;
  position: relative;
}

.timeline-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #111520;
}

.thread-subject {
  font-size: 1.1rem;
  margin-bottom: 2px;
}

.thread-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.view-tabs {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.35);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.view-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 4px 10px;
  font-size: 0.76rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.view-tab.active {
  background: var(--accent-primary);
  color: #ffffff;
}

.timeline-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.msg-bubble {
  max-width: 82%;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
  position: relative;
  line-height: 1.5;
}

.msg-bubble.inbound {
  background: #161b26;
  border: 1px solid var(--border-medium);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.msg-bubble.outbound {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.25) 0%, rgba(79, 70, 229, 0.25) 100%);
  border: 1px solid rgba(99, 102, 241, 0.4);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.msg-bubble-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.msg-author {
  font-weight: 600;
  color: #c7d2fe;
}

.msg-content {
  color: var(--text-main);
  white-space: pre-wrap;
}

.msg-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}

.msg-action-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.msg-action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

/* Composer */
.mockup-composer {
  background: #131722;
  border-top: 1px solid var(--border-medium);
  padding: 12px 18px;
}

.composer-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.composer-mode {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.composer-chips {
  display: flex;
  gap: 6px;
}

.chip {
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--text-muted);
}

.chip-toggle {
  font-size: 0.72rem;
  color: var(--accent-primary);
  cursor: pointer;
  font-weight: 600;
}

.composer-input-row {
  display: flex;
  gap: 10px;
}

.composer-input-row input {
  flex: 1;
  background: #0d1017;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s ease;
}

.composer-input-row input:focus {
  border-color: var(--accent-primary);
}

.btn-send {
  background: var(--accent-primary);
  border: none;
  color: #ffffff;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.btn-send:hover {
  background: var(--accent-primary-hover);
  transform: translateY(-1px);
}

/* Features Grid */
.features-section {
  padding: 80px 0;
  background: #090c10;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  transition: all 0.25s ease;
}

.feature-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px -8px rgba(0, 0, 0, 0.5);
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Architecture Section */
.architecture-section {
  padding: 80px 0;
}

.architecture-card {
  background: linear-gradient(135deg, #11151e 0%, #151b27 100%);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.arch-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-top: 14px;
  margin-bottom: 24px;
}

.arch-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.arch-list li {
  font-size: 0.95rem;
  color: var(--text-main);
  position: relative;
  padding-left: 24px;
}

.arch-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-emerald);
  font-weight: 800;
}

.arch-code-preview {
  background: #080a0e;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.code-box-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: #0e1218;
  border-bottom: 1px solid var(--border-subtle);
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

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

.code-title {
  margin-left: 8px;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.code-box {
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #38bdf8;
  line-height: 1.45;
  overflow-x: auto;
}

/* Shortcuts Section */
.shortcuts-section {
  padding: 70px 0;
  background: #0a0d12;
}

.shortcuts-table-wrapper {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.shortcuts-table th {
  background: #131722;
  padding: 14px 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-subtle);
}

.shortcuts-table td {
  padding: 14px 20px;
  font-size: 0.92rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

kbd {
  background: #1e2430;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  padding: 2px 7px;
  font-size: 0.78rem;
  color: #e2e8f0;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

/* Downloads Section */
.downloads-section {
  padding: 80px 0;
}

.download-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.download-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.download-card.featured {
  border-color: var(--accent-primary);
  background: linear-gradient(180deg, #131724 0%, #11141c 100%);
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.18);
}

.download-card:hover {
  transform: translateY(-4px);
}

.platform-badge {
  position: absolute;
  top: 18px;
  right: 18px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

.download-card.featured .platform-badge {
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
  border: 1px solid rgba(99, 102, 241, 0.35);
}

.platform-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
}

.platform-title {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.platform-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex: 1;
}

.download-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.file-note {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 12px;
  text-align: center;
}

/* Prereq Banner */
.prereq-banner {
  background: #111622;
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-xl);
  padding: 24px 30px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.banner-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.banner-body h4 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.banner-body p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.terminal-bar {
  background: #090c12;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  display: inline-block;
}

.terminal-bar code {
  color: var(--accent-cyan);
  font-size: 0.9rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #07090d;
  padding: 60px 0 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 40px;
}

.footer-brand .footer-tagline {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Responsive queries */
@media (max-width: 900px) {
  .mockup-body {
    grid-template-columns: 1fr;
    height: auto;
  }
  .mockup-sidebar {
    height: 240px;
  }
  .architecture-card {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}