/* === DIGITAL BRUTALISM === */

:root {
  --obsidian: #0a0a0a;
  --obsidian-light: #111111;
  --border: #222222;
  --neon: #39ff14;
  --neon-dim: #2ecc40;
  --text: #e5e5e5;
  --text-secondary: #999999;
  --text-muted: #555555;
  --font: 'JetBrains Mono', ui-monospace, 'Cascadia Code', 'Source Code Pro', Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--obsidian);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

/* === HEADER === */
.header {
  border-bottom: 2px solid var(--border);
  background: var(--obsidian-light);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-dot {
  width: 10px;
  height: 10px;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.logo-text {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition: color 0.15s;
}

.nav a:hover {
  color: var(--neon);
}

/* === HERO === */
.hero {
  padding: 80px 0 48px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  border: 1px solid var(--border);
  padding: 4px 12px;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 32px;
  letter-spacing: 0.08em;
}

.hero-title {
  font-size: clamp(32px, 8vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-accent {
  color: var(--neon);
  text-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
}

.hero-desc {
  max-width: 520px;
  margin: 0 auto 40px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  border: 2px solid;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--obsidian);
}

.btn-primary:hover {
  background: transparent;
  color: var(--neon);
}

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

.btn-secondary:hover {
  border-color: var(--neon);
  color: var(--neon);
}

.hero-meta {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.hero-meta .sep {
  margin: 0 12px;
  color: var(--border);
}

/* === SHOWCASE === */
.showcase {
  padding: 24px 0 64px;
}

.showcase-frame {
  border: 2px solid var(--border);
  background: var(--obsidian-light);
  max-width: 520px;
  margin: 0 auto;
}

.showcase-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 2px solid var(--border);
  background: var(--obsidian);
}

.showcase-dot {
  width: 10px;
  height: 10px;
  display: block;
}

.showcase-dot.red { background: #ff5f56; }
.showcase-dot.yellow { background: #ffbd2e; }
.showcase-dot.green { background: #27c93f; }

.showcase-title {
  margin-left: 8px;
  font-size: 11px;
  color: var(--text-muted);
}

.showcase-body {
  padding: 32px;
}

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

.showcase-qrcode {
  width: 180px;
  height: 180px;
  border: 3px solid var(--neon);
  background: #fff;
  padding: 8px;
}

.showcase-qrcode svg {
  width: 100%;
  height: 100%;
  display: block;
}

.showcase-info {
  text-align: center;
}

.showcase-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--neon);
  margin-bottom: 6px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--neon);
  box-shadow: 0 0 6px var(--neon);
  animation: pulse 2s ease-in-out infinite;
}

.showcase-url {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.showcase-img {
  width: 100%;
  display: block;
  border: 1px solid var(--border);
}

.demo-gif {
  max-width: 480px;
  width: 100%;
  display: block;
  margin: 0 auto;
  border: 2px solid var(--border);
}

/* === SECTIONS === */
.features,
.ports,
.download {
  padding: 64px 0;
  border-top: 2px solid var(--border);
}

.section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  margin-bottom: 40px;
}

/* === FEATURES GRID === */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  border: 2px solid var(--border);
  background: var(--obsidian-light);
  padding: 24px;
  transition: border-color 0.15s;
}

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

.card-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  color: var(--neon);
  border: 1px solid var(--neon);
  padding: 2px 8px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.card p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card code {
  font-family: var(--font);
  background: var(--obsidian);
  border: 1px solid var(--border);
  padding: 1px 6px;
  font-size: 11px;
  color: var(--text);
}

/* === PORTS === */
.ports-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.port {
  display: inline-block;
  border: 2px solid var(--border);
  background: var(--obsidian-light);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.port.active {
  border-color: var(--neon);
  color: var(--neon);
  background: var(--obsidian);
}

/* === DOWNLOAD === */
.download-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.download-card {
  display: block;
  border: 2px solid var(--border);
  background: var(--obsidian-light);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s;
}

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

.download-card.secondary {
  border-style: dashed;
}

.download-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--neon);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.download-name {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  word-break: break-all;
}

.download-meta {
  font-size: 11px;
  color: var(--text-muted);
}

.download-note {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.download-note a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.download-note a:hover {
  color: var(--neon);
}

/* === FOOTER === */
.footer {
  border-top: 2px solid var(--border);
  background: var(--obsidian-light);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.footer-copy {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 12px;
}

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

.footer-right a {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.15s;
}

.footer-right a:hover {
  color: var(--neon);
}

/* === RESPONSIVE === */
@media (max-width: 600px) {
  .hero {
    padding: 48px 0 32px;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }
  
  .nav {
    gap: 16px;
  }
  
  .nav a {
    font-size: 10px;
  }
  
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-copy {
    display: block;
    margin-left: 0;
    margin-top: 4px;
  }
}