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

:root {
  --bg:       #0d0d0f;
  --bg2:      #111114;
  --card:     #1a1a1e;
  --card2:    #1e1e22;
  --border:   #2a2a30;
  --accent:   #007acc;
  --accent2:  #0098ff;
  --green:    #2d6a4f;
  --green2:   #4ec9b0;
  --text:     #e0e0e0;
  --muted:    #888;
  --faint:    #444;
  --radius:   10px;
}

html { scroll-behavior: smooth; }

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

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

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 16px;
  color: #fff;
}

.nav-logo {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a { transition: color 0.15s; }
.nav-links a:hover { color: #fff; }

.nav-github {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color 0.15s, color 0.15s !important;
}

.nav-github:hover {
  border-color: var(--faint);
  color: #fff !important;
}

/* ── Sections ── */
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  color: #fff;
  text-align: center;
  margin-bottom: 12px;
}

.section-sub {
  color: var(--muted);
  text-align: center;
  font-size: 16px;
  margin-bottom: 56px;
}

/* ── Hero ── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 80px 24px 100px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 122, 204, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: rgba(0, 122, 204, 0.15);
  border: 1px solid rgba(0, 122, 204, 0.3);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--accent2);
  width: fit-content;
}

.hero-title {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -1px;
}

.hero-title .accent {
  color: var(--accent2);
}

.hero-sub {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 480px;
}

.hero-sub em {
  font-style: normal;
  color: var(--green2);
  font-weight: 500;
}

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

.btn-primary {
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 8px;
  transition: background 0.15s, transform 0.1s;
}

.btn-primary:hover {
  background: var(--accent2);
  transform: translateY(-1px);
}

.btn-ghost {
  padding: 12px 28px;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.15s, color 0.15s;
}

.btn-ghost:hover {
  border-color: var(--faint);
  color: #fff;
}

.hero-platforms {
  font-size: 12px;
  color: var(--faint);
  margin-top: 4px;
}

/* ── App Mockup ── */
.hero-mockup {
  display: flex;
  justify-content: center;
}

.mockup-window {
  width: 100%;
  max-width: 520px;
  background: #1a1a1e;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.04);
  overflow: hidden;
}

.mockup-titlebar {
  background: #111114;
  height: 34px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-bottom: 1px solid #0a0a0c;
  gap: 8px;
}

.mockup-logo {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: var(--accent);
  opacity: 0.8;
  flex-shrink: 0;
}

.mockup-app-name {
  font-size: 11px;
  color: #555;
  flex: 1;
}

.mockup-controls {
  display: flex;
  gap: 5px;
}

.mockup-controls span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #333;
}

.mockup-controls .close { background: #c0392b; opacity: 0.7; }

.mockup-body {
  display: grid;
  grid-template-columns: 110px 1fr 120px;
  height: 200px;
}

.mockup-sidebar {
  background: #141418;
  padding: 10px 8px;
  border-right: 1px solid #0a0a0c;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mockup-btn {
  height: 22px;
  border-radius: 3px;
}

.mockup-btn.blue { background: rgba(0, 122, 204, 0.4); }
.mockup-btn.green { background: rgba(45, 106, 79, 0.4); }

.mockup-file-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 4px;
}

.mockup-file {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 5px;
  border-radius: 3px;
}

.mockup-file.active { background: rgba(255,255,255,0.06); }

.mockup-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.mockup-dot.teal { background: var(--green2); }
.mockup-dot.gray { background: #444; }

.mockup-bar {
  height: 6px;
  background: #333;
  border-radius: 3px;
}

.mockup-bar.w80 { width: 80%; }
.mockup-bar.w75 { width: 75%; }
.mockup-bar.w70 { width: 70%; }
.mockup-bar.w60 { width: 60%; }
.mockup-bar.w50 { width: 50%; }

.mockup-main {
  background: #111;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mockup-play-icon {
  font-size: 28px;
  color: rgba(255,255,255,0.15);
}

.mockup-right {
  background: #141418;
  border-left: 1px solid #0a0a0c;
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mockup-search-bar {
  height: 22px;
  background: #222;
  border-radius: 3px;
  border: 1px solid #333;
}

.mockup-result {
  height: 36px;
  background: #1e1e22;
  border-radius: 3px;
  border-left: 3px solid var(--accent);
}

.mockup-result.short { height: 28px; }

.mockup-bottom {
  background: #111114;
  border-top: 1px solid #0a0a0c;
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mockup-timestamp {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 3px 0;
}

.mockup-time {
  font-size: 11px;
  color: var(--green2);
  font-family: monospace;
  width: 32px;
  flex-shrink: 0;
}

.mockup-plus {
  margin-left: auto;
  width: 16px;
  height: 16px;
  border: 1px solid #333;
  border-radius: 2px;
  font-size: 10px;
  color: #555;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ── Features ── */
.features {
  padding: 100px 24px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

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

.feature-card:hover {
  border-color: var(--faint);
  transform: translateY(-2px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: rgba(0, 122, 204, 0.12);
  color: var(--accent2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-icon.green  { background: rgba(78,201,176,0.1); color: var(--green2); }
.feature-icon.teal   { background: rgba(78,201,176,0.1); color: var(--green2); }
.feature-icon.orange { background: rgba(229,192,123,0.1); color: #e5c07b; }
.feature-icon.purple { background: rgba(180,120,240,0.1); color: #b478f0; }
.feature-icon.red    { background: rgba(192,57,43,0.1);   color: #e05555; }

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

/* ── How it works ── */
.how-it-works {
  padding: 100px 24px;
}

.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  max-width: 260px;
  text-align: center;
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
}

.step p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

.step-arrow {
  font-size: 24px;
  color: var(--faint);
}

/* ── Download ── */
.download {
  padding: 100px 24px;
  background: var(--bg2);
  border-top: 1px solid var(--border);
}

.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 36px;
}

.download-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: border-color 0.2s;
}

.download-card:hover { border-color: var(--faint); }

.download-card.featured {
  border-color: rgba(0, 122, 204, 0.4);
  background: linear-gradient(135deg, var(--card) 0%, rgba(0,122,204,0.06) 100%);
}

.download-platform-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
}

.download-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.download-version {
  font-size: 12px;
  color: var(--faint);
}

.download-btn {
  display: inline-block;
  padding: 10px 24px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  transition: background 0.15s;
  margin-top: 4px;
}

.download-btn:hover { background: var(--accent2); }

.download-note {
  font-size: 11px;
  color: var(--faint);
}

.download-alt {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 60px;
}

.download-alt p {
  font-size: 13px;
  color: var(--muted);
}

.download-alt a {
  color: var(--accent2);
  transition: color 0.15s;
}

.download-alt a:hover { color: #fff; }

/* ── Requirements ── */
.requirements {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 700px;
  margin: 0 auto;
}

.requirements h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  text-align: center;
}

.req-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.req-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.req-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--faint);
  font-weight: 600;
}

.req-value {
  font-size: 14px;
  color: var(--text);
}

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

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: #fff;
}

.footer-logo {
  width: 24px;
  height: 24px;
  border-radius: 5px;
  object-fit: contain;
}

.footer-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--muted);
}

.footer-links a { transition: color 0.15s; }
.footer-links a:hover { color: #fff; }

.footer-copy {
  font-size: 12px;
  color: var(--faint);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 60px 24px 60px;
  }

  .hero-mockup { display: none; }

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

  .steps { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }

  .nav-links a:not(.nav-github) { display: none; }
}