/* A-IDE Landing Page — Redesign
   Colors match the app palette from src/renderer/styles/globals.css
   Inspired by Linear.app (glassmorphism) + Cursor.com (product-focused hero) */

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

:root {
  --bg-primary: #1e1e1e;
  --bg-secondary: #252526;
  --bg-tertiary: #2d2d30;
  --text-primary: #cccccc;
  --text-secondary: #9d9d9d;
  --text-bright: #ffffff;
  --accent-blue: #007acc;
  --accent-green: #4ec9b0;
  --border: #3c3c3c;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* New glassmorphism tokens */
  --glass-bg: rgba(37, 37, 38, 0.6);
  --glass-border: rgba(60, 60, 60, 0.4);
  --glass-blur: 12px;
  --mono-stack: 'SF Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-stack);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ================================================================
   HEADER — Glassmorphism sticky bar
   ================================================================ */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(30, 30, 30, 0.7);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--text-primary);
  text-decoration: none;
}

/* ================================================================
   BUTTONS
   ================================================================ */

.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  cursor: pointer;
  border: none;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent-blue);
  color: var(--text-bright);
  box-shadow: 0 2px 12px rgba(0, 122, 204, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 4px 20px rgba(0, 122, 204, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.8125rem;
}

/* ================================================================
   HERO — Product-focused with CSS app mockup
   ================================================================ */

.hero {
  padding: 80px 0 48px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 0.8125rem;
  color: var(--accent-green);
  background: rgba(78, 201, 176, 0.08);
  border: 1px solid rgba(78, 201, 176, 0.2);
  margin-bottom: 24px;
  animation: hero-enter 0.6s ease both;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--text-bright);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
  animation: hero-enter 0.6s ease 0.1s both;
}

.subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.7;
  animation: hero-enter 0.6s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  animation: hero-enter 0.6s ease 0.3s both;
}

/* Staggered hero entrance */
@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================================================================
   CSS APP MOCKUP — The centerpiece
   ================================================================ */

.mockup-wrapper {
  position: relative;
  max-width: 900px;
  margin: 56px auto 0;
  animation: hero-enter 0.7s ease 0.45s both;
}

/* Ambient glow behind mockup */
.mockup-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(
    ellipse at center,
    rgba(0, 122, 204, 0.15) 0%,
    rgba(78, 201, 176, 0.08) 40%,
    transparent 70%
  );
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.mockup {
  position: relative;
  z-index: 1;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.06);
  background: var(--bg-primary);
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
}

/* Title bar */
.mockup-titlebar {
  height: 38px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.traffic-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.traffic-light.red { background: #ff5f56; }
.traffic-light.yellow { background: #ffbd2e; }
.traffic-light.green { background: #27c93f; }

.mockup-titlebar-text {
  font-family: var(--mono-stack);
  font-size: 11px;
  color: var(--text-secondary);
  margin-left: 8px;
  display: flex;
  gap: 10px;
}

.mockup-titlebar-text .branch {
  color: var(--accent-green);
}

/* Main panel area */
.mockup-body {
  display: flex;
  flex: 1;
  min-height: 0;
}

/* Sidebar */
.mockup-sidebar {
  width: 15%;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.mockup-sidebar-header {
  padding: 8px 10px;
  font-family: var(--mono-stack);
  font-size: 9px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
}

.mockup-sidebar-item {
  padding: 5px 10px;
  font-family: var(--mono-stack);
  font-size: 10px;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.mockup-sidebar-item.active {
  background: rgba(0, 122, 204, 0.12);
  color: var(--text-bright);
}

.mockup-sidebar-item .item-branch {
  font-size: 9px;
  color: var(--accent-green);
}

/* Left column — Claude + Terminal stacked */
.mockup-left {
  width: 42%;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

/* Panel header shared */
.mockup-panel-header {
  height: 32px;
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-family: var(--mono-stack);
  font-size: 10px;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 6px;
}

.mockup-panel-header.focused {
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--accent-blue);
  color: var(--text-bright);
}

.mockup-panel-header .tab-icon {
  color: var(--accent-green);
}

/* Claude panel */
.mockup-claude {
  flex: 6;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--border);
}

.mockup-claude-content {
  flex: 1;
  padding: 8px 10px;
  font-family: var(--mono-stack);
  font-size: 11px;
  line-height: 1.6;
  overflow: hidden;
}

.mockup-line {
  white-space: nowrap;
  overflow: hidden;
}

.mockup-line .prompt {
  color: var(--accent-blue);
}

.mockup-line .text {
  color: var(--text-primary);
}

.mockup-line .highlight {
  color: var(--accent-green);
}

.mockup-line .num {
  color: #b5cea8;
}

/* Blinking cursor */
.cursor-blink {
  display: inline-block;
  width: 7px;
  height: 13px;
  background: var(--accent-green);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Terminal panel */
.mockup-terminal {
  flex: 4;
  display: flex;
  flex-direction: column;
}

.mockup-terminal-content {
  flex: 1;
  padding: 8px 10px;
  font-family: var(--mono-stack);
  font-size: 11px;
  line-height: 1.6;
  overflow: hidden;
}

/* Right column — Browser */
.mockup-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border);
}

/* Browser URL bar */
.mockup-browser-bar {
  height: 28px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 6px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.browser-nav-btn {
  font-size: 10px;
  color: var(--text-secondary);
  cursor: default;
}

.browser-url {
  flex: 1;
  height: 18px;
  background: var(--bg-primary);
  border-radius: 4px;
  font-family: var(--mono-stack);
  font-size: 9px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  padding: 0 8px;
  overflow: hidden;
  white-space: nowrap;
}

/* Abstract webpage content */
.mockup-browser-content {
  flex: 1;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}

.browser-rect {
  border-radius: 4px;
  background: var(--bg-tertiary);
}

.browser-rect.wide { width: 70%; height: 10px; }
.browser-rect.medium { width: 50%; height: 10px; }
.browser-rect.narrow { width: 30%; height: 8px; }
.browser-rect.block { width: 100%; height: 40px; border-radius: 6px; }
.browser-rect.half { width: 48%; height: 28px; display: inline-block; border-radius: 6px; }

.browser-rects-row {
  display: flex;
  gap: 8px;
}

/* Status bar */
.mockup-statusbar {
  height: 22px;
  background: var(--accent-blue);
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-family: var(--mono-stack);
  font-size: 10px;
  color: var(--text-bright);
  gap: 12px;
  flex-shrink: 0;
}

.mockup-statusbar .status-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mockup-statusbar .status-git {
  color: rgba(255, 255, 255, 0.85);
}

/* ================================================================
   FEATURES — Single-column stacked cards with fade-in
   ================================================================ */

.features {
  padding: 80px 0;
}

.features .section-heading {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-bright);
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: -0.01em;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 28px 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 122, 204, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 122, 204, 0.1);
}

.feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(78, 201, 176, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--accent-green);
  font-family: var(--mono-stack);
}

.feature-text h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 6px;
}

.feature-text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ================================================================
   DOWNLOAD — Glassmorphism cards
   ================================================================ */

.download {
  padding: 80px 0;
}

.download h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 40px;
  text-align: center;
  letter-spacing: -0.01em;
}

.download-content {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.download-option {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 28px 24px;
  -webkit-backdrop-filter: blur(var(--glass-blur));
  backdrop-filter: blur(var(--glass-blur));
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.download-option:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 122, 204, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.download-option h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 8px;
}

.download-option p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.download-option .note {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 12px;
  margin-bottom: 0;
}

.download-option pre {
  background: rgba(30, 30, 30, 0.8);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
}

.download-option code {
  font-size: 0.8125rem;
  color: var(--accent-green);
  font-family: var(--mono-stack);
  line-height: 1.7;
}

.prerequisites {
  text-align: center;
}

.prerequisites h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.prerequisites ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.prerequisites li {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 6px 16px;
}

.prerequisites li a {
  color: var(--accent-blue);
}

/* ================================================================
   FOOTER — Minimal
   ================================================================ */

footer {
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.footer-inner .footer-tech {
  color: var(--text-secondary);
  opacity: 0.7;
}

/* ================================================================
   SCROLL-TRIGGERED FADE-IN
   ================================================================ */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.fade-in:nth-child(2) { transition-delay: 0.08s; }
.fade-in:nth-child(3) { transition-delay: 0.16s; }
.fade-in:nth-child(4) { transition-delay: 0.24s; }

/* ================================================================
   RESPONSIVE
   ================================================================ */

@media (max-width: 768px) {
  .hero {
    padding: 56px 0 40px;
  }

  .nav-anchor {
    display: none;
  }

  .mockup-wrapper {
    margin-top: 40px;
  }

  .features .section-heading {
    font-size: 1.5rem;
  }

  .download-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 40px 0 32px;
  }

  .subtitle {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .mockup-wrapper {
    margin-top: 32px;
  }

  /* Simplify mockup on very small screens */
  .mockup-sidebar-item .item-branch {
    display: none;
  }

  .mockup-line {
    font-size: 0;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    margin-bottom: 4px;
    width: 80%;
  }

  .mockup-line:nth-child(even) {
    width: 60%;
  }

  .mockup-line .prompt,
  .mockup-line .text,
  .mockup-line .highlight,
  .mockup-line .num,
  .cursor-blink {
    display: none;
  }

  .feature-card {
    padding: 20px;
    gap: 16px;
  }

  .feature-icon {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .prerequisites ul {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
}