:root {
  --primary: #ffc107;
  --primary-dark: #e6a800;
  --primary-glow: rgba(255, 193, 7, 0.25);
  --bg: #07080f;
  --bg-card: rgba(12, 14, 22, 0.88);
  --bg-card2: rgba(18, 20, 32, 0.9);
  --bg-overlay: rgba(0, 0, 0, 0.6);
  --text: #e8e4d8;
  --text-muted: #8a8070;
  --border: rgba(255, 193, 7, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.06);
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #60a5fa;
  --font: 'Courier New', monospace;
}

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

body {
  background-color: var(--bg);
  background-image: var(--bg-image, none);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  line-height: 1.6;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, rgba(7,8,15,0.85) 0%, rgba(10,8,3,0.75) 100%);
  pointer-events: none;
  z-index: 0;
}

body > * { position: relative; z-index: 1; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 960px; margin: 0 auto; padding: 1rem; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.card2 { background: var(--bg-card2); }

h1, h2, h3 { color: var(--primary); margin-bottom: 0.75rem; letter-spacing: 0.02em; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }

.btn {
  display: inline-block;
  padding: 0.6rem 1.4rem;
  border: 1px solid var(--primary);
  background: transparent;
  color: var(--primary);
  border-radius: 3px;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.95rem;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  letter-spacing: 0.03em;
}
.btn:hover {
  background: var(--primary);
  color: #000;
  box-shadow: 0 0 12px var(--primary-glow);
}
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; box-shadow: 0 0 12px rgba(239,68,68,0.3); }
.btn-success { border-color: var(--success); color: var(--success); }
.btn-success:hover { background: var(--success); color: #000; box-shadow: 0 0 12px rgba(34,197,94,0.3); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; box-shadow: none; }

input, textarea, select {
  background: rgba(7, 8, 15, 0.8);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  border-radius: 3px;
  font-family: var(--font);
  font-size: 0.95rem;
  width: 100%;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-glow);
}

label { display: block; margin-bottom: 0.25rem; color: var(--text-muted); font-size: 0.9rem; letter-spacing: 0.04em; }

.form-group { margin-bottom: 1rem; }

.alert {
  padding: 0.75rem 1rem;
  border-radius: 3px;
  margin-bottom: 0.75rem;
  border-left: 3px solid;
  font-size: 0.9rem;
}
.alert-success { background: rgba(34,197,94,0.08); border-color: var(--success); color: var(--success); }
.alert-danger  { background: rgba(239,68,68,0.08); border-color: var(--danger);  color: var(--danger);  }
.alert-warning { background: rgba(245,158,11,0.08); border-color: var(--warning); color: var(--warning); }
.alert-info    { background: rgba(96,165,250,0.08); border-color: var(--info);    color: var(--info);    }

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  font-size: 0.8rem;
}
.badge-easy   { background: rgba(34,197,94,0.1);  color: var(--success); }
.badge-medium { background: rgba(245,158,11,0.1); color: var(--warning); }
.badge-hard   { background: rgba(239,68,68,0.1);  color: var(--danger); }
.badge-phishing { background: rgba(239,68,68,0.1); color: var(--danger); }
.badge-legit    { background: rgba(34,197,94,0.1); color: var(--success); }

.diff-badge {
  font-size: 0.65rem; padding: 0.1rem 0.4rem; border-radius: 2px;
  text-transform: uppercase; font-weight: bold; letter-spacing: 0.08em;
}
.diff-easy   { background: rgba(34,197,94,0.1);  color: var(--success); }
.diff-medium { background: rgba(245,158,11,0.1); color: var(--warning); }
.diff-hard   { background: rgba(239,68,68,0.1);  color: var(--danger); }
.cat-badge { font-size: 0.65rem; padding: 0.1rem 0.4rem; border-radius: 2px; background: rgba(255,193,7,0.08); color: var(--text-muted); }

.nav {
  display: flex; align-items: center; gap: 1rem;
  background: rgba(7, 8, 15, 0.92);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1.5rem;
  flex-wrap: wrap;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky; top: 0; z-index: 100;
}
.nav-brand { color: var(--primary); font-size: 1.1rem; font-weight: bold; letter-spacing: 0.05em; }
.nav a { color: var(--text-muted); font-size: 0.9rem; }
.nav a:hover { color: var(--primary); }

.notification-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
  background: var(--primary); color: #000;
  padding: 0.5rem 1rem; text-align: center; font-size: 0.95rem; font-weight: bold;
  transform: translateY(-100%); transition: transform 0.3s;
}
.notification-bar.show { transform: translateY(0); }

.global-timer {
  position: fixed; bottom: 1rem; right: 1rem; z-index: 9998;
  background: rgba(7, 8, 15, 0.92); border: 2px solid var(--warning);
  border-radius: 6px; padding: 0.75rem 1.25rem; text-align: center;
  min-width: 120px; display: none;
  backdrop-filter: blur(8px);
}
.global-timer.show { display: block; }
.global-timer .time { font-size: 2rem; color: var(--warning); }
.global-timer .label { font-size: 0.75rem; color: var(--text-muted); }

@keyframes flagGet {
  0%   { opacity: 0; transform: scale(0.5) translateY(-20px); }
  30%  { opacity: 1; transform: scale(1.2) translateY(0); }
  70%  { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.8) translateY(10px); }
}

.flag-get-anim {
  position: fixed; top: 30%; left: 50%; transform: translateX(-50%);
  background: var(--bg-card); border: 2px solid var(--primary);
  border-radius: 8px; padding: 1.5rem 2.5rem; text-align: center;
  z-index: 9997; pointer-events: none;
  animation: flagGet 2s ease-in-out forwards;
  box-shadow: 0 0 30px var(--primary-glow);
}
.flag-get-anim .icon { font-size: 2rem; }
.flag-get-anim .pts  { font-size: 1.5rem; color: var(--primary); }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.5rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border-subtle); }
th { color: var(--primary); font-size: 0.85rem; letter-spacing: 0.05em; }
td { font-size: 0.9rem; }

.progress-bar {
  background: rgba(255,255,255,0.05); border-radius: 3px; height: 8px; overflow: hidden;
}
.progress-bar-inner { height: 100%; background: var(--primary); border-radius: 3px; transition: width 0.4s; }
.progress-bar-fill  { height: 100%; background: var(--primary); border-radius: 3px; transition: width 0.8s; }
.progress-bar-wrap  { background: rgba(255,255,255,0.05); border-radius: 3px; overflow: hidden; }

.rank-1 { color: #ffd700; }
.rank-2 { color: #c0c0c0; }
.rank-3 { color: #cd7f32; }

.typewriter::after {
  content: '|';
  animation: blink 0.7s step-start infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* Solved / locked state styles for prob cards */
.solved-banner {
  background: rgba(34,197,94,0.08);
  border: 2px solid var(--success);
  border-radius: 6px; padding: 1rem; text-align: center;
  color: var(--success); font-size: 1.1rem; font-weight: bold;
}

/* Gate room card styles */
.room-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}
@media (max-width: 600px) { .room-grid { grid-template-columns: repeat(2, 1fr); } }

.room-card {
  background: var(--bg-card2);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.1s, box-shadow 0.2s;
  position: relative;
}
.room-card:hover:not(.room-locked) {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--primary-glow);
}
.room-card.room-locked { opacity: 0.38; cursor: not-allowed; }
.room-card.room-current {
  border-color: var(--primary);
  border-width: 2px;
  box-shadow: 0 0 16px var(--primary-glow);
}
.room-card.room-done { border-color: var(--success); }
.room-card .room-icon { font-size: 1.75rem; margin-bottom: 0.4rem; }
.room-card .room-num { font-size: 0.65rem; color: var(--text-muted); letter-spacing: 0.08em; text-transform: uppercase; }
.room-card .room-name { font-size: 0.8rem; color: var(--text); margin-top: 0.2rem; line-height: 1.3; }