/* ============================================
   Telfin - Console-Inspired Theme
   Matching Remote-Coder webapp style
   ============================================ */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --bg-input: #0d0d14;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-cyan: #00d9ff;
  --accent-green: #00ff88;
  --accent-red: #ff4444;
  --accent-orange: #ff9800;
  --accent-purple: #a855f7;
  --accent-yellow: #ffd700;
  --border: #27272a;
  --border-focus: #00d9ff;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --font-sans: 'Inter', -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-mono);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

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

a:hover {
  color: var(--accent-green);
}

/* ============================================
   Container
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============================================
   Header
   ============================================ */

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-logo {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
}

.header-title {
  font-size: 1rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.header-nav a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.header-nav a:hover {
  color: var(--accent-cyan);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  display: inline-block;
  text-align: center;
}

.btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-secondary);
}

.btn-primary {
  background: var(--bg-tertiary);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-primary:hover {
  background: rgba(0, 217, 255, 0.1);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
  color: var(--accent-cyan);
}

.btn-accent {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.btn-accent:hover {
  background: rgba(0, 255, 136, 0.1);
  box-shadow: 0 0 10px rgba(0, 255, 136, 0.2);
  color: var(--accent-green);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
}

.hero-content {
  text-align: center;
  max-width: 900px;
}

.ascii-logo {
  color: var(--accent-cyan);
  font-size: 0.85rem;
  line-height: 1.2;
  margin-bottom: 2rem;
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.3;
}

.hero .tagline {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

.hero-note {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Terminal Preview */
.terminal-preview {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  text-align: left;
  max-width: 700px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.terminal-header-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red { background: var(--accent-red); }
.terminal-dot.yellow { background: var(--accent-yellow); }
.terminal-dot.green { background: var(--accent-green); }

.terminal-title {
  margin-left: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.terminal-body {
  padding: 1.5rem;
  font-size: 0.9rem;
}

.terminal-line {
  margin-bottom: 0.5rem;
}

.terminal-line.output {
  color: var(--text-secondary);
  padding-left: 1.5rem;
}

.prompt {
  color: var(--accent-green);
  margin-right: 0.5rem;
}

.cyan { color: var(--accent-cyan); }
.green { color: var(--accent-green); }
.yellow { color: var(--accent-yellow); }

.cursor {
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* ============================================
   Section Styling
   ============================================ */

.section-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent-cyan);
  letter-spacing: 0.2em;
  margin-bottom: 3rem;
  text-align: center;
}

/* ============================================
   Features Section
   ============================================ */

.features {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

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

.feature-icon {
  margin-bottom: 1rem;
}

.feature-icon pre {
  color: var(--accent-cyan);
  font-size: 0.6rem;
  line-height: 1.1;
}

.feature-card h3 {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works {
  padding: 6rem 2rem;
}

.steps {
  max-width: 700px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  padding: 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.2s;
}

.step:hover {
  border-color: var(--accent-green);
}

.step-number {
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
  min-width: 60px;
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

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

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
  text-align: center;
}

.cta-content h2 {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

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

/* ============================================
   Scanline Effect (subtle)
   ============================================ */

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.03) 0px,
    rgba(0, 0, 0, 0.03) 1px,
    transparent 1px,
    transparent 2px
  );
  z-index: 9999;
}

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

@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }

  .header-nav {
    gap: 1rem;
  }

  .hero {
    padding: 7rem 1rem 3rem;
  }

  .hero h1 {
    font-size: 1.5rem;
    letter-spacing: 0.1em;
  }

  .hero .tagline {
    font-size: 0.95rem;
  }

  .ascii-logo {
    font-size: 0.55rem;
  }

  .terminal-preview {
    font-size: 0.8rem;
  }

  .terminal-body {
    padding: 1rem;
    font-size: 0.75rem;
  }

  .features {
    padding: 4rem 1rem;
  }

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

  .step {
    flex-direction: column;
    gap: 1rem;
  }

  .step-number {
    min-width: auto;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}