/* ═══════════════════════════════════════════════
   Zigmund.io — Linux Terminal Retro Theme
   ═══════════════════════════════════════════════ */

:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-terminal: #000000;
  --border: #21262d;
  --border-light: #30363d;
  --accent: #f97316;
  --accent-dim: #c2410c;
  --green: #00ff41;
  --green-dim: #00cc33;
  --amber: #ffb000;
  --cyan: #00d4ff;
  --purple: #a78bfa;
  --red: #ff5f56;
  --yellow: #ffbd2e;
  --green-dot: #27c93f;
  --text: #c9d1d9;
  --text-dim: #8b949e;
  --text-bright: #f0f6fc;
  --font-retro: 'VT323', monospace;
  --font-mono: 'IBM Plex Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Scanline effect */
.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.02) 2px,
    rgba(0, 0, 0, 0.02) 4px
  );
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══ Navigation ═══ */
.nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(13, 17, 23, 0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-bright);
}

.logo-icon {
  font-size: 20px;
}

.logo-text {
  font-family: var(--font-retro);
  font-size: 28px;
  letter-spacing: 2px;
}

.logo-ver {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--green);
  background: rgba(0, 255, 65, 0.08);
  padding: 2px 6px;
  border: 1px solid rgba(0, 255, 65, 0.2);
  border-radius: 3px;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}

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

.ext-icon {
  font-size: 11px;
  opacity: 0.5;
}

/* ═══ Hero ═══ */
.hero {
  padding: 120px 0 60px;
  text-align: center;
}

/* Terminal window (Linux/GTK style) */
.terminal-window {
  max-width: 620px;
  margin: 0 auto 40px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-terminal);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.03);
  overflow: hidden;
}

.terminal-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.terminal-buttons {
  display: flex;
  gap: 8px;
}

.tbtn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: block;
}

.tbtn-close { background: var(--red); }
.tbtn-min { background: var(--yellow); }
.tbtn-max { background: var(--green-dot); }

.terminal-title {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 13px;
  flex: 1;
  text-align: center;
}

.terminal-bar-right {
  width: 52px;
}

.terminal-body {
  padding: 20px;
}

.ascii-art {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.3;
  color: var(--green);
  text-align: left;
  white-space: pre;
  overflow-x: auto;
}

.terminal-tagline {
  font-family: var(--font-mono);
  font-size: 15px;
  margin-top: 16px;
  text-align: left;
}

.prompt-user { color: var(--green); font-weight: 600; }
.prompt-at { color: var(--text-dim); }
.prompt-host { color: var(--cyan); font-weight: 600; }
.prompt-colon { color: var(--text-dim); }
.prompt-path { color: var(--purple); font-weight: 600; }
.prompt-dollar { color: var(--text-dim); }

.typing {
  color: var(--text-bright);
  animation: blink-cursor 1s step-end infinite;
  border-right: 2px solid var(--green);
  padding-right: 4px;
}

@keyframes blink-cursor {
  50% { border-color: transparent; }
}

.hero-title {
  font-family: var(--font-retro);
  font-size: 28px;
  color: var(--text-bright);
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-retro);
  font-size: 20px;
  letter-spacing: 1px;
  text-decoration: none;
  border: 1px solid;
  border-radius: 6px;
  transition: all 0.15s;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #fb923c;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

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

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

.btn-icon {
  font-size: 14px;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 13px;
}

/* ═══ Section Titles ═══ */
.section-title {
  font-family: var(--font-retro);
  font-size: 32px;
  text-align: center;
  color: var(--text-bright);
  margin-bottom: 48px;
  letter-spacing: 4px;
}

.title-deco {
  color: var(--border-light);
  margin: 0 8px;
}

.title-bracket {
  color: var(--green);
}

/* ═══ Features ═══ */
.features {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 28px 24px;
  transition: border-color 0.2s, transform 0.2s;
  position: relative;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  opacity: 0;
  transition: opacity 0.2s;
  border-radius: 1px;
}

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

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-family: var(--font-retro);
  font-size: 24px;
  color: var(--text-bright);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ═══ Quick Start ═══ */
.quickstart {
  padding: 80px 0;
}

.steps {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.step-number {
  font-family: var(--font-retro);
  font-size: 48px;
  color: var(--accent);
  line-height: 1;
  min-width: 60px;
  text-align: right;
  opacity: 0.8;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-family: var(--font-retro);
  font-size: 24px;
  color: var(--text-bright);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

/* Code window (Linux terminal style) */
.code-window {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-terminal);
  overflow: hidden;
}

.code-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.code-bar-dots {
  display: flex;
  gap: 6px;
}

.cdot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
}

.cdot-close { background: var(--red); }
.cdot-min { background: var(--yellow); }
.cdot-max { background: var(--green-dot); }

.code-bar-title {
  font-size: 12px;
  color: var(--text-dim);
}

.code-body {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
  color: var(--text);
}

/* Syntax highlighting */
.c-keyword { color: var(--accent); }
.c-string { color: var(--green); }
.c-builtin { color: var(--cyan); }
.c-fn { color: var(--amber); }
.c-number { color: var(--cyan); }
.c-comment { color: var(--text-dim); }

/* ═══ Why Section ═══ */
.why {
  padding: 80px 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.why-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
  overflow: hidden;
}

.why-header {
  background: var(--bg-terminal);
  border-bottom: 1px solid var(--border);
  color: var(--green);
  padding: 10px 16px;
  font-family: var(--font-retro);
  font-size: 18px;
  letter-spacing: 2px;
}

.why-prompt {
  color: var(--accent);
  margin-right: 8px;
}

.why-card p {
  padding: 20px;
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ═══ Footer ═══ */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

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

.footer-brand {
  font-family: var(--font-retro);
  font-size: 24px;
  color: var(--text-bright);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.2s;
}

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

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

.blink {
  animation: blink 1s step-end infinite;
  color: var(--green);
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ═══ Responsive ═══ */
@media (max-width: 768px) {
  .features-grid,
  .why-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .ascii-art {
    font-size: 8px;
  }

  .terminal-tagline {
    font-size: 13px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .step {
    flex-direction: column;
    gap: 12px;
  }

  .step-number {
    text-align: left;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .section-title {
    font-size: 24px;
    letter-spacing: 2px;
  }

  .title-deco {
    display: none;
  }
}

@media (max-width: 480px) {
  .ascii-art {
    font-size: 6.5px;
  }

  .code-body {
    font-size: 11px;
    padding: 12px;
  }
}