:root {
  --bg-dark: #090d16;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --primary: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.25);
  --accent: #6366f1;
  --accent-purple: #a855f7;
  --success: #10b981;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, Monaco, Consolas, monospace;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.15) 0%, transparent 60%),
    radial-gradient(circle at 80% 20%, rgba(56, 189, 248, 0.08) 0%, transparent 40%);
  background-repeat: no-repeat;
}

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

a:hover {
  color: #7dd3fc;
}

/* Header & Nav */
.header {
  border-bottom: 1px solid var(--bg-card-border);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 13, 22, 0.85);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.brand-logo {
  width: 2.25rem;
  height: 2.25rem;
}

.brand span {
  background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 0.15rem 0.45rem;
  border-radius: 9999px;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-main);
}

.btn-nav {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--bg-card-border);
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-nav:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}

/* Main Content */
.main {
  flex: 1;
  padding: 3rem 0 5rem;
}

/* Teaser / Hero */
.hero {
  text-align: center;
  padding: 3rem 0 4rem;
  max-width: 860px;
  margin: 0 auto;
}

.badge-teaser {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: #c7d2fe;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  margin-bottom: 1.75rem;
}

.badge-pulse {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.gradient-text {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2.25rem;
  font-weight: 400;
}

/* Notify / Form */
.notify-box {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  padding: 1.75rem;
  border-radius: 1rem;
  max-width: 540px;
  margin: 0 auto 3rem;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(16px);
}

.notify-form {
  display: flex;
  gap: 0.75rem;
}

.notify-input {
  flex: 1;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-main);
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.notify-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
  color: #fff;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.notify-help {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.75rem;
}

#notify-status {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  display: none;
}

#notify-status.success {
  display: block;
  color: var(--success);
}

#notify-status.error {
  display: block;
  color: #ef4444;
}

/* Feature Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 0.875rem;
  padding: 1.75rem;
  transition: all 0.2s ease;
  backdrop-filter: blur(12px);
}

.feature-card:hover {
  border-color: rgba(255, 255, 255, 0.16);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.4);
}

.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Terminal Snippet Box */
.terminal-section {
  background: #0b1120;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.875rem;
  overflow: hidden;
  max-width: 820px;
  margin: 0 auto 3rem;
  box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.6);
}

.terminal-header {
  background: #0f172a;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.terminal-title {
  margin-left: 0.5rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: #e2e8f0;
  overflow-x: auto;
}

.cmd-line {
  color: #38bdf8;
}

.cmd-comment {
  color: #64748b;
}

.cmd-success {
  color: #34d399;
}

/* Footer */
.footer {
  border-top: 1px solid var(--bg-card-border);
  padding: 2.5rem 0;
  font-size: 0.875rem;
  color: var(--text-dim);
  text-align: center;
  background: rgba(9, 13, 22, 0.95);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .notify-form {
    flex-direction: column;
  }
  .nav-links {
    display: none;
  }
}