/* ==========================================
   brosh landing page
   ========================================== */

:root {
  --bg: #0a0a0a;
  --surface-1: #111;
  --surface-2: #1a1a1a;
  --surface-3: #252526;
  --text: #e5e5e5;
  --text-secondary: #999;
  --brand: #FFCE27;
  --brand-dim: rgba(255, 206, 39, 0.15);
  --border: #2d2d30;
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1400px;
  --nav-height: 64px;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

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

ul { list-style: none; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--brand);
  color: #000;
}
.btn-primary:hover {
  background: #ffe066;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--brand-dim);
}

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--surface-3);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary svg {
  width: 20px;
  height: 20px;
}

/* ---- Nav ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  transition: background 0.3s ease, backdrop-filter 0.3s ease;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo img { height: 32px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-download {
  color: var(--brand) !important;
  font-weight: 600;
}

.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);
  transition: all 0.3s;
  border-radius: 1px;
}

/* ---- Hero ---- */
.hero {
  padding: var(--nav-height) 48px 0;
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: center;
  min-height: 100vh;
}

.hero-content {
  text-align: left;
}

.hero-headline {
  font-size: 3.75rem;
  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: 32px;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.hero-other-platforms {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: inline-block;
  margin-bottom: 24px;
}
.hero-other-platforms:hover {
  color: var(--text);
}

.hero-install {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 16px;
}

.hero-install code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.copy-btn {
  display: flex;
  align-items: center;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 2px;
  transition: color 0.2s;
}
.copy-btn:hover { color: var(--brand); }
.copy-btn .check-icon { display: none; }
.copy-btn.copied .copy-icon { display: none; }
.copy-btn.copied .check-icon { display: block; color: var(--brand); }

/* ---- Showcase (Video/Screenshot Player) ---- */
.showcase {
  max-width: 100%;
}

.showcase-tabs {
  display: flex;
  gap: 4px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

.showcase-tab {
  background: var(--surface-1);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
}
.showcase-tab:hover {
  color: var(--text);
  border-color: var(--text-secondary);
}
.showcase-tab.active {
  background: var(--brand);
  color: #000;
  border-color: var(--brand);
}

.showcase-window {
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---- Window Frame ---- */
.window-frame {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.window-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}

.window-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.window-dot.red { background: #ff5f57; }
.window-dot.yellow { background: #febc2e; }
.window-dot.green { background: #28c840; }

.window-content {
  position: relative;
  background: var(--surface-1);
}

.window-content img {
  width: 100%;
  display: block;
}

/* ---- Showcase Panels ---- */
.showcase-panel {
  display: none;
  position: relative;
}
.showcase-panel.active {
  display: block;
}

.showcase-video {
  width: 100%;
  display: none;
}
.showcase-video.loaded {
  display: block;
}

.showcase-img {
  width: 100%;
}
.showcase-video.loaded + .showcase-img {
  display: none;
}

/* ---- Features ---- */
.features {
  padding: 80px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 120px;
}

.feature-row:last-child {
  margin-bottom: 0;
}

.feature-row.reverse {
  grid-template-columns: 1.2fr 1fr;
}
.feature-row.reverse .feature-text {
  order: 2;
}
.feature-row.reverse .feature-media {
  order: 1;
}

.feature-text h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.feature-text p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.feature-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}
.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--brand);
  border-radius: 50%;
}

.feature-media .window-frame {
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

/* ---- MCP Setup ---- */
.mcp-setup {
  padding: 80px 24px;
  background: var(--surface-1);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.mcp-setup-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.mcp-setup-inner h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.mcp-setup-inner > p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.terminal-block {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: left;
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--surface-3);
  border-bottom: 1px solid var(--border);
}

.terminal-title {
  margin-left: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.terminal-code {
  padding: 24px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text);
}

/* ---- Download ---- */
.download {
  padding: 80px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.download-inner {
  text-align: center;
}

.download-inner h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.download-version {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.download-primary {
  margin-bottom: 48px;
}

.download-primary .btn {
  font-size: 1.1rem;
  padding: 16px 36px;
}

.download-primary .download-command {
  margin-top: 16px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text);
  user-select: all;
}

.download-alternatives h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
  text-align: left;
}

.install-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  transition: border-color 0.2s;
}
.install-card:hover {
  border-color: var(--text-secondary);
}

.install-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.code-inline {
  background: var(--surface-2);
  border-radius: 6px;
  padding: 10px 14px;
  overflow-x: auto;
}

.code-inline code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--brand);
  white-space: nowrap;
}

.download-direct {
  text-align: center;
}

.direct-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
}

.direct-links a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s;
}
.direct-links a:hover {
  color: var(--brand);
  border-color: var(--brand);
  text-decoration: none;
}

/* ---- Footer ---- */
.footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-brand img { height: 24px; }

.footer-copyright {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--text);
  text-decoration: none;
}

/* ---- Reveal Animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================
   Responsive
   ========================================== */

/* Tablet */
@media (max-width: 1024px) {
  .feature-row,
  .feature-row.reverse {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .feature-row.reverse .feature-text { order: 1; }
  .feature-row.reverse .feature-media { order: 2; }

  .feature-row {
    margin-bottom: 80px;
  }

  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-left: 24px;
    padding-right: 24px;
  }
  .hero-content { text-align: center; }
  .hero-cta { justify-content: center; }
  .hero-install { margin: 0 auto; }
  .hero-headline { font-size: 3rem; }
  .hero-tagline { font-size: 1.15rem; }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }

  .nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding: calc(var(--nav-height) + 40px) 16px 60px;
    min-height: auto;
  }
  .hero-headline { font-size: 2.25rem; }
  .hero-tagline { font-size: 1.05rem; }
  .hero-install code { font-size: 0.75rem; }

  .showcase-tabs {
    gap: 6px;
    padding: 0 8px;
  }
  .showcase-tab {
    padding: 6px 12px;
    font-size: 0.78rem;
  }

  .feature-text h2 { font-size: 1.5rem; }
  .features { padding: 60px 16px; }
  .feature-row { margin-bottom: 60px; }

  .mcp-setup { padding: 60px 16px; }
  .mcp-setup-inner h2 { font-size: 1.5rem; }

  .download { padding: 60px 16px; }
  .download-inner h2 { font-size: 1.5rem; }
  .install-grid { grid-template-columns: 1fr; }

  .footer-inner {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}