/* CYBER LAB - Cybersecurity theme: dark background, neon green, cyan accents */

:root {
  --bg-dark: #0a0e14;
  --bg-card: #0d1117;
  --border: #1c2128;
  --neon-green: #39ff14;
  --neon-dim: #2dd41a;
  --cyan: #00d4ff;
  --cyan-dim: #00a8cc;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --glow-green: 0 0 20px rgba(57, 255, 20, 0.4);
  --glow-cyan: 0 0 15px rgba(0, 212, 255, 0.3);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: var(--cyan);
  text-decoration: none;
}
a:hover {
  color: var(--neon-green);
  text-shadow: var(--glow-green);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border: 2px solid var(--neon-green);
  background: transparent;
  color: var(--neon-green);
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.btn:hover {
  background: var(--neon-green);
  color: var(--bg-dark);
  box-shadow: var(--glow-green);
}
.btn-cyan {
  border-color: var(--cyan);
  color: var(--cyan);
}
.btn-cyan:hover {
  background: var(--cyan);
  color: var(--bg-dark);
  box-shadow: var(--glow-cyan);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
  border-color: var(--neon-dim);
  box-shadow: var(--glow-green);
}
.card h3 {
  margin-top: 0;
  color: var(--neon-green);
  font-size: 1.25rem;
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* Progress bar */
.progress-wrap {
  background: var(--border);
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
  margin-top: 8px;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-green), var(--cyan));
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* Forms */
input[type="text"],
input[type="password"],
textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}
input:focus,
textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}
textarea {
  min-height: 100px;
  resize: vertical;
}
label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.nav-brand {
  font-weight: bold;
  font-size: 1.25rem;
  color: var(--neon-green);
  text-shadow: var(--glow-green);
}
.nav-links {
  display: flex;
  gap: 1.5rem;
}

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

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  color: var(--cyan);
  font-weight: 600;
}
tr:hover {
  background: rgba(57, 255, 20, 0.05);
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 1rem;
}
.alert-success {
  background: rgba(57, 255, 20, 0.15);
  border: 1px solid var(--neon-dim);
  color: var(--neon-green);
}
.alert-error {
  background: rgba(255, 80, 80, 0.15);
  border: 1px solid #ff5050;
  color: #ff8080;
}

/* Intro / terminal */
.terminal {
  font-family: 'JetBrains Mono', monospace;
  color: var(--neon-green);
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.5);
}
.terminal-cursor::after {
  content: '▌';
  animation: blink 0.8s step-end infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* Scoreboard large */
.scoreboard .rank { font-size: 2rem; font-weight: bold; color: var(--cyan); }
.scoreboard .team-name { font-size: 1.75rem; color: var(--neon-green); }
.scoreboard .score { font-size: 2rem; color: var(--neon-green); text-shadow: var(--glow-green); }