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

:root {
  --bg: #0d1117;
  --bg-surface: #0a0e14;
  --bg-card: #161b22;
  --bg-card-hover: #1c2333;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-dim: #484f5e;
  --accent: #f0883e;
  --accent-hover: #f7b955;
  --gradient-start: #f0883e;
  --gradient-end: #f7b955;
  --border: #1c2333;
  --code-bg: #070a0f;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; height: auto; }

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, backdrop-filter 0.3s, box-shadow 0.3s;
}

.navbar.scrolled {
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
}

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

.nav-logo { width: 44px; height: 44px; border-radius: 8px; }

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

.nav-links a { color: var(--text-muted); font-size: 0.9rem; font-weight: 500; }
.nav-links a:hover { color: var(--text); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  font-family: inherit;
}

.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #070a0f;
}
.btn-primary:hover { opacity: 0.9; color: #070a0f; transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--text-muted); color: var(--text); }

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 0 0;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, rgba(240, 136, 62, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content { position: relative; z-index: 1; }

.hero-logo {
  width: 140px;
  height: 140px;
  border-radius: 28px;
  margin-bottom: 24px;
  box-shadow: 0 8px 32px rgba(240, 136, 62, 0.15);
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-buttons { display: flex; gap: 12px; justify-content: center; margin-bottom: 32px; }

.hero-badges { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 64px; }

.badge {
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.hero-screenshot-wrapper { position: relative; z-index: 1; }

.hero-screenshot {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255,255,255,0.03);
}

/* ===== Features ===== */
.features {
  padding: 120px 0;
  background: var(--bg-surface);
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 64px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.feature-icon { font-size: 2rem; margin-bottom: 16px; }

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===== Screenshots ===== */
.screenshots {
  padding: 120px 0;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.screenshot-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: transform 0.2s, border-color 0.2s;
}

.screenshot-item:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.screenshot-item.featured {
  grid-column: span 1;
}

.screenshot-item img {
  width: 100%;
  display: block;
}

.screenshot-label {
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ===== Install ===== */
.install {
  padding: 120px 0;
  background: var(--bg-surface);
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.install-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.install-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.rec-badge {
  font-size: 0.7rem;
  padding: 3px 10px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  color: #070a0f;
  border-radius: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 12px;
}

code {
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  font-size: 0.85rem;
  color: var(--accent);
}

pre code { color: var(--text-muted); }

.install-hint {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.download-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

/* ===== Platforms ===== */
.platforms {
  padding: 100px 0;
}

.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
}

.platform-tags span {
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.platform-tags .more {
  background: transparent;
  border-color: transparent;
  color: var(--accent);
  font-style: italic;
}

/* ===== Footer ===== */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-logo { width: 36px; height: 36px; border-radius: 8px; }

.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--text); }

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

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: var(--radius);
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.6);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links a:not(.btn) { display: none; }

  .hero { padding-top: 120px; }
  .hero h1 { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }

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

  .feature-grid { grid-template-columns: 1fr; }

  .screenshot-grid { grid-template-columns: 1fr; }

  .install-grid { grid-template-columns: 1fr; }

  .platform-tags { gap: 6px; }
  .platform-tags span { font-size: 0.75rem; padding: 4px 10px; }
}

@media (max-width: 480px) {
  .hero-badges { gap: 6px; }
  .badge { font-size: 0.7rem; padding: 4px 10px; }
}