/* ──────────────────────────────────────────────────────────────────────────
   CyberQuest CTF — Feuille de style principale
   Thème : Cyberpunk / Hacker Terminal
   ────────────────────────────────────────────────────────────────────────── */

:root {
  --bg-primary: #050510;
  --bg-secondary: #0a0a1a;
  --bg-card: #0d0d20;
  --bg-hover: #12122a;
  --border: #1a1a35;
  --border-accent: #00ff8840;

  --color-primary: #00ff88;
  --color-secondary: #00ccff;
  --color-accent: #ff0066;
  --color-purple: #bb00ff;
  --color-yellow: #ffcc00;
  --color-orange: #ff6600;

  --text-primary: #e0e0f0;
  --text-secondary: #888899;
  --text-muted: #444455;

  --font-mono: 'Courier New', 'Consolas', monospace;
  --font-sans: 'Segoe UI', system-ui, sans-serif;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0, 255, 136, 0.05);
  --shadow-hover: 0 8px 32px rgba(0, 255, 136, 0.15);
  --glow: 0 0 20px rgba(0, 255, 136, 0.3);
  --glow-blue: 0 0 20px rgba(0, 204, 255, 0.3);
}

/* ── Reset & Base ─────────────────────────────────────────────────────────── */

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

html { scroll-behavior: smooth; }

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

a { color: var(--color-secondary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }

code, pre {
  font-family: var(--font-mono);
  background: #0a0a1a;
  border: 1px solid var(--border);
  border-radius: 4px;
}
code { padding: 0.1em 0.4em; color: var(--color-primary); font-size: 0.9em; }
pre { padding: 1rem; overflow-x: auto; }

/* ── Scrollbar ────────────────────────────────────────────────────────────── */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: 3px; opacity: 0.5; }

/* ── Grid & Layout ────────────────────────────────────────────────────────── */

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.container-sm { max-width: 500px; margin: 0 auto; padding: 0 1.5rem; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }

@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* ── Navbar ───────────────────────────────────────────────────────────────── */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 16, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0.8rem 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  text-shadow: var(--glow);
}

.navbar-brand .brand-icon { font-size: 1.3rem; }

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background: var(--border-accent);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.nav-points {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: 20px;
  padding: 0.3rem 0.8rem;
  font-family: var(--font-mono);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
}

/* ── Card ─────────────────────────────────────────────────────────────────── */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.3s;
}

.card:hover { border-color: var(--border-accent); box-shadow: var(--shadow-hover); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #050510;
}
.btn-primary:hover {
  background: #00ffaa;
  box-shadow: var(--glow);
  color: #050510;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
}
.btn-secondary:hover {
  background: var(--color-secondary);
  color: #050510;
  box-shadow: var(--glow-blue);
}

.btn-danger {
  background: var(--color-accent);
  color: white;
}
.btn-danger:hover { background: #ff3380; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.btn-ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-lg { padding: 0.9rem 2rem; font-size: 1rem; }
.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.8rem; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Forms ────────────────────────────────────────────────────────────────── */

.form-group { margin-bottom: 1.2rem; }

.form-label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color 0.2s;
  font-family: inherit;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
}

.form-input.mono { font-family: var(--font-mono); letter-spacing: 0.05em; }

/* ── Badges & Tags ────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-green { background: rgba(0, 255, 136, 0.15); color: var(--color-primary); border: 1px solid rgba(0,255,136,0.3); }
.badge-blue { background: rgba(0, 204, 255, 0.15); color: var(--color-secondary); border: 1px solid rgba(0,204,255,0.3); }
.badge-red { background: rgba(255, 0, 102, 0.15); color: #ff6688; border: 1px solid rgba(255,0,102,0.3); }
.badge-purple { background: rgba(187, 0, 255, 0.15); color: var(--color-purple); border: 1px solid rgba(187,0,255,0.3); }
.badge-yellow { background: rgba(255, 204, 0, 0.15); color: var(--color-yellow); border: 1px solid rgba(255,204,0,0.3); }
.badge-orange { background: rgba(255, 102, 0, 0.15); color: var(--color-orange); border: 1px solid rgba(255,102,0,0.3); }
.badge-teal   { background: rgba(0, 200, 180, 0.15); color: #00c8b4; border: 1px solid rgba(0,200,180,0.3); }

/* ── Alert ────────────────────────────────────────────────────────────────── */

.alert {
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.alert-success { background: rgba(0,255,136,0.1); border: 1px solid rgba(0,255,136,0.3); color: var(--color-primary); }
.alert-error { background: rgba(255,0,102,0.1); border: 1px solid rgba(255,0,102,0.3); color: #ff6688; }
.alert-info { background: rgba(0,204,255,0.1); border: 1px solid rgba(0,204,255,0.3); color: var(--color-secondary); }
.alert-warning { background: rgba(255,204,0,0.1); border: 1px solid rgba(255,204,0,0.3); color: var(--color-yellow); }

/* ── Progress Bar ─────────────────────────────────────────────────────────── */

.progress-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* ── Challenge Cards ──────────────────────────────────────────────────────── */

.challenge-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.challenge-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem;
  cursor: pointer;
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}

.challenge-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.challenge-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

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

.challenge-card.solved {
  border-color: rgba(0, 255, 136, 0.4);
  background: rgba(0, 255, 136, 0.03);
}

.challenge-card.solved::after {
  content: '✓';
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  color: #050510;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
}

.challenge-title {
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-size: 1rem;
}

.challenge-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.8rem;
}

.challenge-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.challenge-points {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-primary);
}

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

/* Difficulty stars */
.difficulty { display: flex; gap: 2px; }
.difficulty-star { font-size: 0.75rem; }
.difficulty-star.filled { color: var(--color-yellow); }
.difficulty-star.empty { color: var(--text-muted); }

/* ── Category Tabs ────────────────────────────────────────────────────────── */

.category-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.tab-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
  font-family: inherit;
}

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

.tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #050510;
}

/* ── Modal ────────────────────────────────────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform 0.2s;
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  background: var(--bg-card);
  z-index: 1;
}

.modal-body { padding: 1.5rem; }

.modal-close {
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}
.modal-close:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ── Challenge Description Markdown-like styles ───────────────────────────── */

.challenge-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  white-space: pre-wrap;
}

.challenge-description strong { color: var(--text-primary); font-weight: 700; }

/* ── Career Panel ─────────────────────────────────────────────────────────── */

.career-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  background: rgba(0, 204, 255, 0.1);
  border: 1px solid rgba(0, 204, 255, 0.3);
  color: var(--color-secondary);
}

.career-info {
  background: rgba(0, 204, 255, 0.05);
  border: 1px solid rgba(0, 204, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 1rem;
}

/* ── Scoreboard Table ─────────────────────────────────────────────────────── */

.table-wrapper { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }

thead th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
}

tbody tr {
  border-bottom: 1px solid rgba(255,255,255,0.03);
  transition: background 0.15s;
}

tbody tr:hover { background: var(--bg-hover); }

tbody td { padding: 0.9rem 1rem; font-size: 0.9rem; }

/* Rank colors */
.rank-1 .rank-num { color: #FFD700; text-shadow: 0 0 10px rgba(255,215,0,0.5); }
.rank-2 .rank-num { color: #C0C0C0; }
.rank-3 .rank-num { color: #CD7F32; }

.rank-num { font-family: var(--font-mono); font-weight: 800; font-size: 1.1rem; }

.points-display {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1rem;
}

.username-display { font-weight: 600; }

/* ── Solve Feed ───────────────────────────────────────────────────────────── */

.solve-feed {
  max-height: 400px;
  overflow-y: auto;
}

.solve-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  border-left: 3px solid var(--color-primary);
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.solve-item .solve-time { color: var(--text-muted); font-size: 0.75rem; margin-left: auto; }

/* ── Stats Cards ──────────────────────────────────────────────────────────── */

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  text-shadow: var(--glow);
  display: block;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.3rem;
}

/* ── Hero Section (Landing Page) ─────────────────────────────────────────── */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-content { position: relative; z-index: 1; max-width: 700px; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: 20px;
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Careers Section ──────────────────────────────────────────────────────── */

.career-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s;
}

.career-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.career-icon { font-size: 2.5rem; margin-bottom: 1rem; display: block; }
.career-name { font-weight: 700; color: var(--text-primary); margin-bottom: 0.5rem; }
.career-desc { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.5; }

/* ── Section ──────────────────────────────────────────────────────────────── */

.section { padding: 5rem 0; }
.section-title { font-size: 2rem; text-align: center; margin-bottom: 0.5rem; color: var(--text-primary); }
.section-sub { text-align: center; color: var(--text-secondary); margin-bottom: 3rem; }

/* ── Hint Button ──────────────────────────────────────────────────────────── */

.hint-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  font-family: inherit;
  margin-bottom: 0.5rem;
}

.hint-btn:hover { border-color: var(--color-yellow); color: var(--color-yellow); }
.hint-btn.revealed { border-color: var(--color-yellow); background: rgba(255,204,0,0.05); }
.hint-btn .hint-cost { font-family: var(--font-mono); font-size: 0.8rem; color: var(--color-yellow); }

.hint-content {
  background: rgba(255, 204, 0, 0.05);
  border: 1px solid rgba(255, 204, 0, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.8rem;
  font-size: 0.85rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  display: none;
}

.hint-content.show { display: block; }

/* ── Toast Notification ───────────────────────────────────────────────────── */

.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 360px;
}

.toast {
  padding: 1rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  animation: toastIn 0.3s ease;
  border: 1px solid transparent;
}

.toast-success { background: #0d1a0d; border-color: rgba(0,255,136,0.4); color: var(--color-primary); }
.toast-error { background: #1a0d0d; border-color: rgba(255,0,102,0.4); color: #ff6688; }
.toast-info { background: #0d0d1a; border-color: rgba(0,204,255,0.4); color: var(--color-secondary); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

/* ── Live dot ─────────────────────────────────────────────────────────────── */

.live-dot {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255,0,102,0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(255,0,102,0); }
}

/* ── Loading Spinner ──────────────────────────────────────────────────────── */

.spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Solved Banner ────────────────────────────────────────────────────────── */

.solved-banner {
  background: linear-gradient(135deg, rgba(0,255,136,0.1), rgba(0,204,255,0.1));
  border: 1px solid rgba(0,255,136,0.3);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}

.solved-banner .solved-icon { font-size: 3rem; display: block; margin-bottom: 0.5rem; }
.solved-banner h3 { color: var(--color-primary); margin-bottom: 0.5rem; }

/* ── Responsive ───────────────────────────────────────────────────────────── */

@media (max-width: 600px) {
  .navbar-nav { display: none; }
  .hero-title { font-size: 2rem; }
  .modal { max-height: 100vh; border-radius: 0; }
}

/* ── Utility Classes ──────────────────────────────────────────────────────── */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-mono { font-family: var(--font-mono); }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.85rem; }
.text-lg { font-size: 1.1rem; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.flex-wrap { flex-wrap: wrap; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }

.w-full { width: 100%; }
.rounded { border-radius: var(--radius-sm); }
.hidden { display: none !important; }

/* Category color accents */
.cat-crypto { --cat-color: var(--color-yellow); }
.cat-web { --cat-color: var(--color-secondary); }
.cat-osint { --cat-color: var(--color-primary); }
.cat-forensics { --cat-color: var(--color-purple); }
.cat-reseau { --cat-color: var(--color-orange); }

.cat-accent { color: var(--cat-color, var(--color-primary)); }
.cat-border { border-color: var(--cat-color, var(--border)) !important; }