/* ============================================================
   THE VIBE — 共享CSS变量与基础样式
   赛博神学调性：黑底绿字/金字/橙字
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  /* 主色 */
  --matrix-green: #00ff41;
  --matrix-green-dim: rgba(0, 255, 65, 0.15);
  --matrix-green-glow: 0 0 10px rgba(0, 255, 65, 0.3);
  --cyber-blue: #00e5ff;
  --vibe-orange: #ff4500;
  --vibe-orange-dim: rgba(255, 69, 0, 0.15);
  --vibe-orange-glow: 0 0 10px rgba(255, 69, 0, 0.5);
  --gold: #FFDF73;
  --gold-glow: 0 0 15px rgba(255, 215, 0, 0.4);
  --white-glow: 0 0 8px rgba(255, 255, 255, 0.3);

  /* 背景 */
  --bg-deep: #020304;
  --bg-main: #050505;
  --bg-card: #0a0a0c;
  --bg-elevated: #111111;

  /* 文字 */
  --text-main: #e0e0e0;
  --text-muted: #666666;
  --text-dim: #555555;

  /* 边框 */
  --border-subtle: 1px solid #222222;
  --border-dashed: 1px dashed #333333;
  --border-matrix: 1px solid var(--matrix-green);
  --border-gold: 1px solid var(--gold);
  --border-orange: 1px solid var(--vibe-orange);

  /* 字体 */
  --font-mono: 'Courier New', 'Fira Code', 'Consolas', monospace;
  --font-serif: 'Noto Serif TC', serif;
}

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

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.6;
  font-family: var(--font-mono);
  overflow-x: hidden;
}

a {
  color: var(--matrix-green);
  text-decoration: none;
  transition: color 0.2s, text-shadow 0.2s;
}
a:hover {
  color: #ffffff;
  text-shadow: var(--white-glow);
}

/* --- Global Navigation Bar --- */
.vibe-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(2, 3, 4, 0.95);
  border-bottom: 1px solid rgba(0, 255, 65, 0.2);
  padding: 10px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 9999;
  backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 1px;
}
.vibe-nav-brand {
  color: var(--gold);
  font-weight: bold;
  text-shadow: 0 0 8px var(--gold);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}
.vibe-nav-brand-icon { font-size: 18px; }
.vibe-nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}
.vibe-nav-links a {
  color: #88cc88;
  font-size: 12px;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 2px;
  transition: all 0.2s;
}
.vibe-nav-links a:hover {
  color: var(--gold);
  background: rgba(255, 223, 115, 0.1);
  text-shadow: 0 0 10px var(--gold);
}
.vibe-nav-links a.active {
  color: var(--gold);
  border-bottom: 1px solid var(--gold);
}

/* --- Common Button Styles --- */
.vibe-btn {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 20px;
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.3s;
  letter-spacing: 1px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.vibe-btn-green {
  background: transparent;
  border: 1px solid var(--matrix-green);
  color: var(--matrix-green);
}
.vibe-btn-green:hover {
  background: var(--matrix-green);
  color: #000;
  box-shadow: var(--matrix-green-glow);
}
.vibe-btn-gold {
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
}
.vibe-btn-gold:hover {
  background: var(--gold);
  color: #000;
  box-shadow: var(--gold-glow);
}
.vibe-btn-orange {
  background: transparent;
  border: 1px solid var(--vibe-orange);
  color: var(--vibe-orange);
}
.vibe-btn-orange:hover {
  background: var(--vibe-orange);
  color: #000;
  box-shadow: var(--vibe-orange-glow);
}

/* --- Matrix Rain Canvas (shared) --- */
#matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* --- Glitch Text Effect --- */
.glitch-text {
  position: relative;
  color: var(--matrix-green);
  text-shadow: 0 0 5px var(--matrix-green);
}
.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.glitch-text::before {
  animation: glitch-anim-1 2s infinite linear alternate-reverse;
  clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
  color: var(--matrix-green);
  opacity: 0.8;
}
.glitch-text::after {
  animation: glitch-anim-2 3s infinite linear alternate-reverse;
  clip-path: polygon(0 66%, 100% 66%, 100% 100%, 0 100%);
  color: var(--vibe-orange);
  opacity: 0.6;
}
@keyframes glitch-anim-1 {
  0% { transform: translate(0); }
  20% { transform: translate(-2px, 1px); }
  40% { transform: translate(2px, -1px); }
  60% { transform: translate(0); }
  80% { transform: translate(1px, 2px); }
  100% { transform: translate(0); }
}
@keyframes glitch-anim-2 {
  0% { transform: translate(0); }
  25% { transform: translate(2px, -1px); }
  50% { transform: translate(-1px, 2px); }
  75% { transform: translate(0); }
  100% { transform: translate(-2px, -1px); }
}

/* --- Utility Classes --- */
.text-green { color: var(--matrix-green); }
.text-gold { color: var(--gold); }
.text-orange { color: var(--vibe-orange); }
.text-mono { font-family: var(--font-mono); }
.text-serif { font-family: var(--font-serif); }
.bg-card { background: var(--bg-card); }
.border-matrix { border: var(--border-matrix); }
.border-gold { border: var(--border-gold); }

/* --- Fade In Animation --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeIn 0.6s ease forwards; }

/* --- Page Content Wrapper --- */
.page-content {
  position: relative;
  z-index: 1;
  padding-top: 60px; /* for nav bar */
}