@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');


/* ============================================
   NeoVault Design System
   Premium Dark Financial Platform
   ============================================ */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(99, 102, 241, 0.3);
  --text-primary: #f1f1f6;
  --text-secondary: #8b8b9e;
  --text-muted: #4a4a5e;
  --accent-primary: #6366f1;
  --accent-secondary: #818cf8;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --accent-glow: 0 0 30px rgba(99, 102, 241, 0.3);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 60px rgba(99,102,241,0.15);
  --transition-fast: 150ms cubic-bezier(0.4,0,0.2,1);
  --transition-normal: 250ms cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 400ms cubic-bezier(0.4,0,0.2,1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(99,102,241,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(139,92,246,0.06) 0%, transparent 50%),
    radial-gradient(ellipse 50% 30% at 50% 80%, rgba(168,85,247,0.04) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}
/* ============ NAVBAR ============ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 2rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10,10,15,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.navbar-logo {
  width: 40px; height: 40px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: white;
  box-shadow: var(--accent-glow);
}
.navbar-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}
.navbar-title span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.navbar-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}
.navbar-nav a:hover { color: var(--text-primary); }
.navbar-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}
.navbar-nav a:hover::after { width: 100%; }
/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(99,102,241,0.4);
}
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
}
.btn-ghost:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
  border-color: var(--border-glow);
}
.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
}
.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: white;
}
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-full { width: 100%; }
/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 2rem 80px;
  text-align: center;
  z-index: 1;
}
.hero-content { max-width: 800px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--accent-secondary);
  margin-bottom: 2rem;
  animation: fadeInDown 0.8s ease;
}
.hero-badge .pulse {
  width: 8px; height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease 0.2s both;
}
.hero h1 .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
  animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.6s both;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  animation: float 8s ease-in-out infinite;
  pointer-events: none;
}
.orb-1 { width: 300px; height: 300px; background: var(--accent-primary); top: 20%; left: 10%; }
.orb-2 { width: 200px; height: 200px; background: #a855f7; top: 60%; right: 15%; animation-delay: -3s; }
.orb-3 { width: 150px; height: 150px; background: #3b82f6; bottom: 20%; left: 30%; animation-delay: -5s; }
@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-20px) translateX(10px); }
  50% { transform: translateY(-10px) translateX(-15px); }
  75% { transform: translateY(-25px) translateX(5px); }
}
/* ============ SECTIONS ============ */
.section {
  position: relative;
  padding: 100px 2rem;
  z-index: 1;
}
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 4rem;
}
.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
}
/* ============ CARDS ============ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.card:hover::before { opacity: 1; }
.card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-glass);
}
.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
/* ============ FORMS ============ */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}
.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  outline: none;
}
.form-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.form-input::placeholder { color: var(--text-muted); }
textarea.form-input { resize: vertical; min-height: 100px; }
/* ============ LOGIN ============ */
.login-panel {
  max-width: 440px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}
.login-panel h2 {
  font-size: 1.8rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.5rem;
}
.login-panel .subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}
.login-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.login-divider::before, .login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-glass);
}
.login-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.login-footer a {
  color: var(--accent-secondary);
  text-decoration: none;
  font-weight: 600;
}
/* ============ COMMENTS ============ */
.comments-section {
  max-width: 700px;
  margin: 0 auto;
}
.comment {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  margin-bottom: 1rem;
  transition: all var(--transition-fast);
}
.comment:hover { border-color: var(--border-glow); }
.comment-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.comment-body h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.25rem; }
.comment-body .time { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.comment-body p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }
/* ============ SEARCH ============ */
.search-container {
  max-width: 600px;
  margin: 0 auto 3rem;
  position: relative;
}
.search-input {
  width: 100%;
  padding: 16px 20px 16px 52px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: all var(--transition-fast);
}
.search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(99,102,241,0.1), var(--shadow-glow);
}
.search-icon {
  position: absolute;
  left: 18px; top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--text-muted);
}
.search-results {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  display: none;
}
.search-results.active { display: block; animation: fadeInUp 0.3s ease; }
/* ============ ADMIN ============ */
.admin-header {
  background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.1));
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.admin-header .icon { font-size: 2rem; }
.admin-header h2 { font-size: 1.5rem; font-weight: 700; }
.admin-header p { color: var(--text-secondary); font-size: 0.85rem; }
.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}
.stat-card .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.stat-card .value {
  font-size: 2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-card .change { font-size: 0.8rem; color: var(--success); margin-top: 0.25rem; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-glass);
}
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-glass);
  color: var(--text-secondary);
}
.data-table tr:hover td { background: var(--bg-glass); }
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-success { background: rgba(16,185,129,0.15); color: var(--success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
/* ============ TOAST ============ */
.toast-container {
  position: fixed;
  top: 90px; right: 20px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  padding: 14px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  animation: slideInRight 0.3s ease;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 300px;
  box-shadow: var(--shadow-lg);
}
.toast-success { border-left: 3px solid var(--success); }
.toast-danger { border-left: 3px solid var(--danger); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-info { border-left: 3px solid var(--info); }
/* ============ PROFILE ============ */
.profile-header { text-align: center; margin-bottom: 2rem; }
.profile-avatar {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 800;
  margin: 0 auto 1rem;
  box-shadow: var(--accent-glow);
}
/* ============ FOOTER ============ */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border-glass);
  padding: 3rem 2rem;
  text-align: center;
}
.footer p { color: var(--text-muted); font-size: 0.85rem; }
.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  list-style: none;
}
.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--accent-secondary); }
/* ============ EVENT BANNER ============ */
.event-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 5000;
  background: linear-gradient(135deg, rgba(99,102,241,0.95), rgba(139,92,246,0.95));
  backdrop-filter: blur(10px);
  padding: 10px 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 0.8rem;
  font-weight: 500;
  color: white;
  border-top: 1px solid rgba(255,255,255,0.2);
}
.event-banner .dot {
  width: 6px; height: 6px;
  background: #10b981;
  border-radius: 50%;
  animation: pulse 2s infinite;
}
/* ============ ANIMATIONS ============ */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideInRight { from { opacity: 0; transform: translateX(50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }
/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .navbar { padding: 0 1rem; }
  .navbar-nav { display: none; }
  .hero h1 { font-size: 2.2rem; }
  .hero-actions { flex-direction: column; }
  .section { padding: 60px 1rem; }
  .features-grid { grid-template-columns: 1fr; }
  .admin-grid { grid-template-columns: 1fr 1fr; }
}
/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-glass); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.1); }
code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.85em;
  color: var(--accent-secondary);
}
::selection { background: rgba(99,102,241,0.3); color: white; }
/* ============ HACKER TERMINAL ============ */
#hacker-terminal {
  position: fixed;
  bottom: 50px;
  right: 20px;
  width: 680px;
  max-height: 520px;
  background: rgba(10, 10, 18, 0.96);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 12px;
  z-index: 90000;
  display: flex;
  flex-direction: column;
  box-shadow:
    0 0 60px rgba(99, 102, 241, 0.15),
    0 20px 60px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(20px);
  animation: scaleIn 0.3s ease;
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  overflow: hidden;
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.terminal-dots {
  display: flex;
  gap: 6px;
}
.terminal-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal-title {
  flex: 1;
  font-size: 0.75rem;
  color: var(--text-muted);
}
.terminal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s;
}
.terminal-close:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}
.terminal-output {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: #c0c0c0;
  max-height: 380px;
}
.terminal-output p {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
}
.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.02);
}
.terminal-prompt {
  color: #10b981;
  font-size: 0.8rem;
  white-space: nowrap;
}
.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #e0e0e0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  caret-color: #10b981;
}
/* Terminal output color classes */
.t-green { color: #10b981; }
.t-red { color: #ef4444; }
.t-yellow { color: #f59e0b; }
.t-blue { color: #3b82f6; }
.t-muted { color: #555; }
/* Terminal scrollbar */
.terminal-output::-webkit-scrollbar { width: 4px; }
.terminal-output::-webkit-scrollbar-track { background: transparent; }
.terminal-output::-webkit-scrollbar-thumb { background: rgba(99, 102, 241, 0.3); border-radius: 4px; }
@media (max-width: 768px) {
  #hacker-terminal {
    left: 10px;
    right: 10px;
    width: auto;
    bottom: 40px;
  }
}
/* ═══════════════════════════════════════════════════════ */
/* ARSENAL DE PENTESTING — Cheat Sheet Styles              */
/* ═══════════════════════════════════════════════════════ */
/* Nav link for arsenal */
.nav-links a[href="#arsenal"] {
  color: #a78bfa;
}
/* Badge "MODO ATAQUE" */
.arsenal-badge {
  display: inline-block;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(249, 115, 22, 0.15));
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  animation: arsenal-badge-pulse 2s ease-in-out infinite;
}
@keyframes arsenal-badge-pulse {
  0%, 100% { box-shadow: 0 0 8px rgba(239, 68, 68, 0.2); }
  50% { box-shadow: 0 0 20px rgba(239, 68, 68, 0.45); }
}
/* Filter bar */
.arsenal-filters {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.arsenal-filter {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s ease;
}
.arsenal-filter:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.3);
  color: var(--text-primary);
}
.arsenal-filter.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
  border-color: rgba(99, 102, 241, 0.5);
  color: #a5b4fc;
  font-weight: 600;
}
/* Block accordion */
.arsenal-block {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all 0.3s ease;
}
.arsenal-block:hover {
  border-color: rgba(99, 102, 241, 0.2);
}
.arsenal-block.arsenal-hidden {
  display: none;
}
.arsenal-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  transition: background 0.2s ease;
  user-select: none;
}
.arsenal-block-header:hover {
  background: rgba(255, 255, 255, 0.03);
}
.arsenal-block-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.arsenal-block-number {
  font-size: 1.5rem;
  font-weight: 800;
  color: rgba(99, 102, 241, 0.3);
  font-family: 'Inter', monospace;
  min-width: 2.5rem;
}
.arsenal-block-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.arsenal-block-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0.15rem 0 0;
}
.arsenal-block-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.arsenal-diff {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  letter-spacing: 0.03em;
}
.arsenal-diff-easy {
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.25);
}
.arsenal-diff-medium {
  background: rgba(234, 179, 8, 0.12);
  color: #facc15;
  border: 1px solid rgba(234, 179, 8, 0.25);
}
.arsenal-diff-advanced {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}
.arsenal-count {
  font-size: 0.72rem;
  color: var(--text-muted);
  opacity: 0.7;
}
.arsenal-chevron {
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: transform 0.3s ease;
}
.arsenal-block.open .arsenal-chevron {
  transform: rotate(180deg);
}
/* Block body (collapsed by default) */
.arsenal-block-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  padding: 0 1.5rem;
}
.arsenal-block.open .arsenal-block-body {
  max-height: 5000px;
  padding: 0 1.5rem 1.5rem;
}
/* Individual exercise item */
.arsenal-item {
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.arsenal-item:last-child {
  border-bottom: none;
}
.arsenal-item-label {
  font-size: 0.9rem;
  color: #e0e0f0;
  margin-bottom: 0.6rem;
  font-weight: 600;
}
.arsenal-tag {
  display: inline-block;
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
  margin-right: 0.5rem;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}
/* Copyable code block */
.arsenal-code {
  position: relative;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  margin-bottom: 0.4rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}
.arsenal-code:hover {
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.25);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.08);
}
.arsenal-code:active {
  transform: scale(0.995);
}
.arsenal-code code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.78rem;
  color: #a5f3fc;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  flex: 1;
}
.arsenal-code-chain code {
  color: #86efac;
}
.arsenal-copy-hint {
  font-size: 0.68rem;
  color: var(--text-muted);
  opacity: 0.5;
  white-space: nowrap;
  padding-top: 2px;
  transition: all 0.2s ease;
  flex-shrink: 0;
}
.arsenal-code:hover .arsenal-copy-hint {
  opacity: 1;
  color: #a5b4fc;
}
/* Copied state */
.arsenal-code.copied {
  border-color: rgba(34, 197, 94, 0.5) !important;
  background: rgba(34, 197, 94, 0.08) !important;
}
.arsenal-code.copied .arsenal-copy-hint {
  opacity: 1;
  color: #4ade80;
}
/* Hint below code */
.arsenal-hint {
  font-size: 0.8rem;
  color: #a0a0b8;
  padding: 0.5rem 0.75rem;
  line-height: 1.5;
  opacity: 1;
  background: rgba(255,255,255,0.02);
  border-radius: 6px;
  margin-top: 0.35rem;
}
.arsenal-hint code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.72rem;
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.08);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}
/* Toast notification */
.arsenal-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: linear-gradient(135deg, #1a1a2e, #16213e);
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: #4ade80;
  padding: 0.6rem 1.5rem;
  border-radius: 12px;
  font-size: 0.82rem;
  font-weight: 600;
  z-index: 10000;
  pointer-events: none;
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(34, 197, 94, 0.15);
  font-family: 'JetBrains Mono', monospace;
}
.arsenal-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
/* Arsenal educational explanations */
.arsenal-explain {
  font-size: 0.88rem;
  color: #d0d0e0;
  line-height: 1.75;
  padding: 1rem 1.25rem;
  background: rgba(99,102,241,0.12);
  border-left: 4px solid rgba(99,102,241,0.5);
  border-radius: 0 10px 10px 0;
  margin-bottom: 1.25rem;
}
.arsenal-explain strong {
  color: #a5b4fc;
}
.arsenal-why {
  background: rgba(251,191,36,0.08);
  border-left: 4px solid rgba(251,191,36,0.4);
  border-radius: 0 10px 10px 0;
  padding: 0.65rem 1.1rem;
  font-size: 0.82rem;
  color: #c4c4d4;
  line-height: 1.65;
  margin-bottom: 0.6rem;
}
.arsenal-why strong {
  color: #fbbf24;
}
.arsenal-why code {
  background: rgba(255,255,255,0.06);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.76rem;
  color: #a5f3fc;
}
.arsenal-code-prompt {
  background: rgba(99,102,241,0.1);
  border-color: rgba(99,102,241,0.35);
}
.arsenal-code-prompt code {
  color: #c4b5fd;
}
/* Responsive */
@media (max-width: 768px) {
  .arsenal-block-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .arsenal-block-meta {
    width: 100%;
    justify-content: flex-start;
  }

  .arsenal-block-number {
    font-size: 1.2rem;
    min-width: 2rem;
  }

  .arsenal-block-info h3 {
    font-size: 0.95rem;
  }

  .arsenal-code {
    flex-direction: column;
    gap: 0.4rem;
  }

  .arsenal-code code {
    font-size: 0.72rem;
  }

  .arsenal-filters {
    gap: 0.35rem;
  }

  .arsenal-filter {
    padding: 0.4rem 0.8rem;
    font-size: 0.72rem;
  }
}