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

:root {
  --theme-blue:       #0057A8;
  --theme-blue-light: #1a7bdc;
  --theme-blue-dark:  #003d7a;
  --theme-orange:     #FF6B00;
  --theme-orange-light:#ff8c33;
  --theme-orange-dark: #cc5500;

  --bg-base:    #0a0c12;
  --bg-surface: #0e1220;
  --bg-card:    #121828;
  --bg-card-hover: #171e30;
  --bg-glass:   rgba(18, 24, 40, 0.85);

  --border-glow:   rgba(0, 87, 168, 0.5);
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-orange: rgba(255, 107, 0, 0.5);

  --text-primary:   #e8eaf0;
  --text-secondary: #8a9bb8;
  --text-muted:     #4a5568;
  --text-accent:    #1a7bdc;
  --text-orange:    #FF6B00;

  --nav-height: 64px;
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  --shadow-blue: 0 0 20px rgba(0, 87, 168, 0.35);
  --shadow-orange: 0 0 20px rgba(255, 107, 0, 0.3);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.5);

  --transition-fast: 150ms ease;
  --transition-med:  250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  
  background-image:
    linear-gradient(rgba(0, 87, 168, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 87, 168, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb {
  background: var(--theme-blue-dark);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--theme-blue); }

h1, h2, h3, h4, h5, h6 {
  font-family: 'Chakra Petch', 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text-primary);
}

a {
  color: var(--theme-blue-light);
  text-decoration: none !important;
  transition: color var(--transition-fast);
}
a:hover { color: var(--theme-orange-light); }

code, pre, .mono {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
}

.navbar {
  background: rgba(10, 12, 18, 0.92) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  min-height: var(--nav-height);
  padding: 0 1rem;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  transition: background var(--transition-med), border-color var(--transition-med);
}



.navbar.scrolled {
  background: rgba(8, 10, 16, 0.98) !important;
  border-bottom-color: var(--border-glow);
  box-shadow: 0 2px 30px rgba(0, 87, 168, 0.2);
}

.navbar-brand {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-primary) !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  transition: all var(--transition-med);
}

.navbar-brand::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--theme-orange);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--theme-orange);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 8px var(--theme-orange); opacity: 1; }
  50% { box-shadow: 0 0 16px var(--theme-orange), 0 0 24px var(--theme-orange-dark); opacity: 0.7; }
}

.navbar-brand:hover {
  color: var(--theme-orange-light) !important;
  text-shadow: 0 0 20px rgba(255, 107, 0, 0.5);
}

.ctf_logo {
  height: 32px !important;
  filter: brightness(1.1);
}

.navbar .nav-link {
  color: var(--text-secondary) !important;
  font-family: 'Exo 2', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
  padding: 0.5rem 0.6rem !important;
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  height: 38px; /* Fixed height for alignment */
}

.navbar .nav-link:active {
  transform: scale(0.92);
}

.navbar .nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--theme-blue), var(--theme-orange));
  border-radius: 1px;
  transition: all var(--transition-med);
  transform: translateX(-50%);
}

.navbar .nav-link:hover {
  color: var(--text-primary) !important;
  background: rgba(0, 87, 168, 0.12);
}

.navbar .nav-link:hover::before,
.navbar .nav-link.active::before {
  width: 80%;
}

.navbar-toggler {
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-sm) !important;
  padding: 0.4rem 0.6rem !important;
}
.navbar-toggler:focus { box-shadow: 0 0 0 2px rgba(0, 87, 168, 0.4) !important; }
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(138, 155, 184, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

.dropdown-menu {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-glow) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-blue), var(--shadow-card) !important;
  backdrop-filter: blur(12px);
  padding: 0.5rem !important;
  margin-top: 0.5rem !important;
  z-index: 1050 !important;
}

.dropdown-item {
  color: var(--text-secondary) !important;
  border-radius: var(--radius-sm) !important;
  padding: 0.5rem 0.75rem !important;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(0, 87, 168, 0.15) !important;
  color: var(--text-primary) !important;
}

.dropdown-item.bg-primary {
  background: linear-gradient(135deg, var(--theme-blue), var(--theme-blue-light)) !important;
  color: #fff !important;
}

.scrollable-menu {
  max-height: 50vh !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
}
.scrollable-menu::-webkit-scrollbar { width: 6px; }
.scrollable-menu::-webkit-scrollbar-track { background: transparent; }
.scrollable-menu::-webkit-scrollbar-thumb { background: rgba(0, 87, 168, 0.4); border-radius: 3px; }
.scrollable-menu::-webkit-scrollbar-thumb:hover { background: rgba(0, 87, 168, 0.8); }

.badge-notification {
  vertical-align: top;
  margin-left: -1.2em;
  font-size: 0.6em;
  background: var(--theme-orange) !important;
  box-shadow: 0 0 8px rgba(255, 107, 0, 0.6);
}

.navbar button.nav-link {
  background: transparent !important;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.navbar .nav-link i {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  font-size: 1.15rem;
}

.navbar .nav-link:hover i {
  color: var(--text-primary);
}

.theme-switch:hover i {
  color: var(--theme-orange) !important;
}

.navbar .dropdown-toggle::after {
  display: none !important;
}

main[role="main"] {
  padding-top: var(--nav-height);
  min-height: calc(100vh - 60px);
}

.jumbotron {
  background: linear-gradient(135deg,
    rgba(0, 57, 120, 0.6) 0%,
    rgba(0, 87, 168, 0.3) 40%,
    rgba(255, 107, 0, 0.15) 80%,
    rgba(10, 12, 18, 0) 100%
  );
  border-bottom: 1px solid var(--border-glow);
  padding: 3rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.jumbotron::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230057A8' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.3;
}

.jumbotron::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    var(--theme-blue),
    var(--theme-orange),
    var(--theme-blue),
    transparent
  );
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0% { opacity: 0.4; }
  50% { opacity: 1; }
  100% { opacity: 0.4; }
}

.jumbotron h1 {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 4px;
  background: linear-gradient(135deg, #ffffff 0%, var(--theme-blue-light) 50%, var(--theme-orange-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
}

.card {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-med);
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-glow) !important;
  box-shadow: var(--shadow-blue), var(--shadow-card);
  transform: translateY(-2px);
}

.card-header {
  background: linear-gradient(135deg, rgba(0, 87, 168, 0.2), rgba(0, 57, 120, 0.1)) !important;
  border-bottom: 1px solid var(--border-glow) !important;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 1rem 1.25rem !important;
}

.card-body {
  padding: 1.5rem !important;
}

.challenge-button {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-md) !important;
  color: var(--text-primary) !important;
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
  min-height: 100px;
}

.challenge-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(0, 87, 168, 0.08) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--transition-med);
}

.challenge-button:hover {
  background: var(--bg-card-hover) !important;
  border-color: var(--theme-blue-light) !important;
  box-shadow: var(--shadow-blue), 0 0 0 1px rgba(0, 87, 168, 0.2) !important;
  transform: translateY(-3px) scale(1.01);
  color: var(--text-primary) !important;
}

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

.challenge-button.challenge-solved {
  background: linear-gradient(135deg, rgba(0, 200, 100, 0.25), rgba(0, 160, 80, 0.15)) !important;
  border: 2px solid #00c864 !important;
  box-shadow: 0 0 15px rgba(0, 200, 100, 0.3), inset 0 0 10px rgba(0, 200, 100, 0.2) !important;
  animation: pulse-solved 3s infinite alternate !important;
}

[data-bs-theme="light"] .challenge-button.challenge-solved {
  background: linear-gradient(135deg, rgba(0, 200, 100, 0.2), rgba(0, 160, 80, 0.05)) !important;
  border: 2px solid #00a854 !important;
}

@keyframes pulse-solved {
  0% { box-shadow: 0 0 10px rgba(0, 200, 100, 0.2), inset 0 0 8px rgba(0, 200, 100, 0.1); }
  100% { box-shadow: 0 0 20px rgba(0, 200, 100, 0.6), inset 0 0 15px rgba(0, 200, 100, 0.3); }
}


.challenge-inner {
  position: relative;
  z-index: 1;
}

.challenge-inner p {
  font-family: 'Exo 2', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.5rem !important;
  color: var(--text-primary);
}

.challenge-inner span {
  font-family: 'Chakra Petch', sans-serif;
  font-weight: 700;
  color: var(--theme-orange);
}

/* Blood Badges */
.blood-badge {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  box-shadow: none;
  flex-shrink: 0;
}

.blood-badge i {
  font-size: 1.1em;
}

.blood-first {
  color: #ffd700;
  border: 1px solid rgba(255, 215, 0, 0.4);
  background: rgba(255, 215, 0, 0.1);
}
.blood-first i {
  color: #ffd700;
  filter: drop-shadow(0 0 5px rgba(255, 215, 0, 0.7));
  animation: pulse-icon 2s infinite alternate;
}

.blood-second {
  color: #e0e0e0;
  border: 1px solid rgba(224, 224, 224, 0.4);
  background: rgba(224, 224, 224, 0.1);
}
.blood-second i {
  color: #e0e0e0;
  filter: drop-shadow(0 0 3px rgba(224, 224, 224, 0.5));
}

.blood-third {
  color: #cd7f32;
  border: 1px solid rgba(205, 127, 50, 0.4);
  background: rgba(205, 127, 50, 0.1);
}
.blood-third i {
  color: #cd7f32;
  filter: drop-shadow(0 0 3px rgba(205, 127, 50, 0.5));
}

@keyframes pulse-icon {
  0% { transform: scale(1); filter: drop-shadow(0 0 3px rgba(255, 215, 0, 0.5)); }
  100% { transform: scale(1.2); filter: drop-shadow(0 0 10px rgba(255, 215, 0, 1)); }
}


.category-header h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--text-secondary);
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.category-header h3::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.2em;
  background: linear-gradient(180deg, var(--theme-blue), var(--theme-orange));
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0, 87, 168, 0.5);
}

.form-control, .form-select {
  background: rgba(14, 18, 32, 0.8) !important;
  border: 1px solid var(--border-subtle) !important;
  border-radius: var(--radius-sm) !important;
  color: var(--text-primary) !important;
  font-family: 'Exo 2', sans-serif;
  padding: 0.65rem 1rem !important;
  height: auto !important;
  transition: all var(--transition-fast);
}

.form-control::placeholder {
  color: var(--text-muted) !important;
}

.form-control:focus, .form-select:focus {
  background: rgba(14, 18, 32, 0.95) !important;
  border-color: var(--theme-blue) !important;
  box-shadow: 0 0 0 3px rgba(0, 87, 168, 0.2), 0 0 10px rgba(0, 87, 168, 0.1) !important;
  color: var(--text-primary) !important;
}

.form-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.form-text {
  color: var(--text-muted) !important;
  font-size: 0.8rem;
}

input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0 1000px var(--bg-surface) inset !important;
  -webkit-text-fill-color: var(--text-primary) !important;
  border-color: var(--theme-blue) !important;
}

.btn {
  font-family: 'Exo 2', sans-serif;
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: var(--radius-sm) !important;
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(255,255,255,0.08), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--theme-blue), var(--theme-blue-light)) !important;
  border: 1px solid var(--theme-blue-light) !important;
  color: #fff !important;
  box-shadow: 0 2px 12px rgba(0, 87, 168, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--theme-blue-light), #2d8fe8) !important;
  box-shadow: 0 4px 20px rgba(0, 87, 168, 0.5), 0 0 15px rgba(0, 87, 168, 0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(138, 155, 184, 0.1) !important;
  border: 1px solid var(--border-subtle) !important;
  color: var(--text-secondary) !important;
}

.btn-secondary:hover {
  background: rgba(138, 155, 184, 0.2) !important;
  border-color: rgba(138, 155, 184, 0.3) !important;
  color: var(--text-primary) !important;
}

.btn-dark {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  color: var(--text-secondary) !important;
}

.btn-dark:hover {
  background: var(--bg-card-hover) !important;
  border-color: var(--border-glow) !important;
  color: var(--text-primary) !important;
}

.btn-success {
  background: linear-gradient(135deg, #008a3a, #00b84d) !important;
  border-color: #00b84d !important;
}

.btn-danger {
  background: linear-gradient(135deg, #991a1a, #c0392b) !important;
  border-color: #c0392b !important;
}

.table {
  color: var(--text-primary) !important;
  border-color: var(--border-subtle) !important;
}

.table thead th {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-glow) !important;
  background: rgba(0, 87, 168, 0.08);
  padding: 1rem 0.75rem;
}

.table tbody tr {
  transition: all var(--transition-fast);
  border-bottom: 1px solid var(--border-subtle) !important;
}

.table tbody tr:hover {
  background: rgba(0, 87, 168, 0.08) !important;
  border-color: var(--border-glow) !important;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  background: rgba(255, 255, 255, 0.02) !important;
  color: var(--text-primary) !important;
}

.table a {
  color: var(--theme-blue-light);
  font-weight: 600;
}

.table a:hover {
  color: var(--theme-orange-light);
}

.table tbody tr:nth-child(1) th,
.table tbody tr:nth-child(2) th,
.table tbody tr:nth-child(3) th {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
}

.table tbody tr:nth-child(1) { background: rgba(255, 215, 0, 0.05) !important; }
.table tbody tr:nth-child(2) { background: rgba(192, 192, 192, 0.05) !important; }
.table tbody tr:nth-child(3) { background: rgba(205, 127, 50, 0.05) !important; }

.alert {
  border-radius: var(--radius-md) !important;
  border: 1px solid !important;
  font-size: 0.9rem;
}

.alert-info {
  background: rgba(0, 87, 168, 0.1) !important;
  border-color: rgba(0, 87, 168, 0.3) !important;
  color: #7ab3f0 !important;
}

.alert-danger {
  background: rgba(192, 57, 43, 0.1) !important;
  border-color: rgba(192, 57, 43, 0.3) !important;
  color: #f08080 !important;
}

.alert-success {
  background: rgba(0, 150, 60, 0.1) !important;
  border-color: rgba(0, 150, 60, 0.3) !important;
  color: #70d48a !important;
}

.alert-warning {
  background: rgba(255, 107, 0, 0.1) !important;
  border-color: rgba(255, 107, 0, 0.3) !important;
  color: #ffa060 !important;
}

.btn-close {
  filter: invert(1) !important;
  opacity: 0.5 !important;
}
.btn-close:hover { opacity: 1 !important; }

.badge {
  font-family: 'Exo 2', sans-serif;
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: 4px !important;
}

.badge.bg-primary {
  background: linear-gradient(135deg, var(--theme-blue), var(--theme-blue-light)) !important;
}

.badge.bg-secondary {
  background: rgba(138, 155, 184, 0.2) !important;
  color: var(--text-secondary) !important;
  border: 1px solid var(--border-subtle);
}

.badge.bg-danger {
  background: var(--theme-orange) !important;
  box-shadow: 0 0 6px rgba(255, 107, 0, 0.4);
}

.modal-content {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-glow) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-blue), 0 0 80px rgba(0, 0, 0, 0.8) !important;
}

.modal-header {
  border-bottom: 1px solid var(--border-glow) !important;
  background: linear-gradient(135deg, rgba(0, 87, 168, 0.15), transparent) !important;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
  padding: 1.25rem 1.5rem !important;
}

.modal-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem !important;
}

.modal-footer {
  border-top: 1px solid var(--border-subtle) !important;
  padding: 1rem 1.5rem !important;
}

.modal-backdrop {
  background: rgba(0, 0, 0, 0.8) !important;
  backdrop-filter: blur(4px);
}

.modal-backdrop.show { opacity: 1 !important; }

.toast {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-glow) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-blue) !important;
  color: var(--text-primary) !important;
}

.toast-header {
  background: rgba(0, 87, 168, 0.1) !important;
  border-bottom: 1px solid var(--border-subtle) !important;
  color: var(--text-primary) !important;
}

.toast-header strong {
  color: var(--theme-blue-light);
}

.nav-pills .nav-link {
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.nav-pills .nav-link:hover {
  background: rgba(0, 87, 168, 0.12);
  color: var(--text-primary);
}

.nav-pills .nav-link.active {
  background: linear-gradient(135deg, var(--theme-blue), var(--theme-blue-light)) !important;
  box-shadow: 0 0 12px rgba(0, 87, 168, 0.4);
}

.footer {
  background: rgba(8, 10, 16, 0.9) !important;
  border-top: 1px solid var(--border-subtle);
  padding: 1.2rem 0;
  margin-top: auto;
}

.footer a {
  color: var(--text-muted) !important;
  font-size: 0.8rem;
  letter-spacing: 1px;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--text-secondary) !important;
}

.ctfdio-email-nudge {
  background: var(--bg-card) !important;
  border: 1px solid rgba(0, 87, 168, 0.4) !important;
  border-radius: var(--radius-md) !important;
  color: var(--text-secondary) !important;
  box-shadow: var(--shadow-blue) !important;
}

.fa-spin.spinner {
  color: var(--theme-blue-light);
  opacity: 0.6;
}

.text-muted { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }

hr {
  border-color: var(--border-subtle) !important;
  opacity: 0.5;
}

blockquote {
  border-left: 3px solid var(--theme-blue);
  padding-left: 1rem;
  color: var(--text-secondary);
}

#score-graph {
  min-height: 350px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.auth-card-wrapper {
  padding: 2rem 0 3rem;
}

.ll { background: rgba(14, 18, 32, 0.9); border-radius: var(--radius-sm); padding: 0.25rem 0.5rem; }

.page-select {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.3rem 0.6rem;
  font-family: 'Exo 2', sans-serif;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.page-select:focus {
  border-color: var(--theme-blue);
  box-shadow: 0 0 0 3px rgba(0, 87, 168, 0.2);
  outline: none;
}

.progress {
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  overflow: hidden;
  height: 0.75rem;
}

.progress-bar {
  transition: width var(--transition-med);
}

.min-vh-25 {
  min-height: 25vh;
}

.badge.text-bg-light {
  background: rgba(138, 155, 184, 0.15) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-subtle);
}

.btn-outline-info {
  background: transparent !important;
  border: 1px solid var(--theme-blue-light) !important;
  color: var(--theme-blue-light) !important;
}

.btn-outline-info:hover {
  background: rgba(26, 123, 220, 0.12) !important;
  color: var(--text-primary) !important;
}

.btn-outline-secondary {
  background: transparent !important;
  border: 1px solid var(--border-subtle) !important;
  color: var(--text-secondary) !important;
}

.btn-outline-secondary:hover {
  background: rgba(138, 155, 184, 0.12) !important;
  border-color: rgba(138, 155, 184, 0.3) !important;
  color: var(--text-primary) !important;
}

.edit-team,
.edit-captain,
.invite-members,
.disband-team {
  display: inline-flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.edit-team:hover i,
.edit-captain:hover i,
.invite-members:hover i {
  color: var(--theme-blue-light) !important;
  text-shadow: 0 0 10px rgba(0, 87, 168, 0.4);
}

.disband-team:hover i {
  color: #c0392b !important;
  text-shadow: 0 0 10px rgba(192, 57, 43, 0.4);
}

/* Scoreboard Top 3 Styles */
tr.top-1 {
  background: linear-gradient(90deg, rgba(255, 215, 0, 0.12), transparent) !important;
  border-left: 3px solid #ffd700;
}
tr.top-2 {
  background: linear-gradient(90deg, rgba(224, 224, 224, 0.1), transparent) !important;
  border-left: 3px solid #e0e0e0;
}
tr.top-3 {
  background: linear-gradient(90deg, rgba(205, 127, 50, 0.1), transparent) !important;
  border-left: 3px solid #cd7f32;
}

tr.top-1 td a {
  color: #ffd700 !important;
  text-shadow: 0 0 8px rgba(255, 215, 0, 0.4);
  font-weight: 700;
}
tr.top-2 td a {
  color: #e0e0e0 !important;
  text-shadow: 0 0 5px rgba(224, 224, 224, 0.4);
  font-weight: 700;
}
tr.top-3 td a {
  color: #cd7f32 !important;
  text-shadow: 0 0 5px rgba(205, 127, 50, 0.4);
  font-weight: 700;
}


@media (max-width: 768px) {
  .navbar-collapse {
    background: rgba(10, 12, 18, 0.98);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 0.5rem;
  }

  .navbar .nav-link::after { display: none; }

  .jumbotron {
    padding: 2rem 0 1.5rem;
  }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(0, 87, 168, 0.3); }
  50% { box-shadow: 0 0 20px rgba(0, 87, 168, 0.6); }
}

.fade-in-up {
  animation: fadeInUp 0.4s ease forwards;
}

.challenge-button { animation: fadeInUp 0.3s ease backwards; }

[data-bs-theme="light"] {
  --bg-base:    #f0f4f8;
  --bg-surface: #e8edf5;
  --bg-card:    #ffffff;
  --bg-card-hover: #f8fbff;
  --text-primary:   #1a1f2e;
  --text-secondary: #4a5568;
  --text-muted:     #8a9bb8;
  --border-subtle: rgba(0, 0, 0, 0.1);
  --border-glow: rgba(0, 87, 168, 0.3);
}

[data-bs-theme="light"] body {
  background-image:
    linear-gradient(rgba(0, 87, 168, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 87, 168, 0.04) 1px, transparent 1px);
}

[data-bs-theme="light"] .navbar {
  background: rgba(240, 244, 248, 0.92) !important;
}

[data-bs-theme="light"] .challenge-button {
  background: #ffffff !important;
  border-color: rgba(0, 0, 0, 0.1) !important;
  color: var(--text-primary) !important;
}

[data-bs-theme="light"] .challenge-button:hover {
  border-color: var(--theme-blue) !important;
  color: var(--text-primary) !important;
}

[data-bs-theme="light"] .form-control,
[data-bs-theme="light"] .form-select {
  background: #ffffff !important;
  border-color: rgba(0, 0, 0, 0.15) !important;
  color: var(--text-primary) !important;
}

[data-bs-theme="light"] .dropdown-menu {
  background: #ffffff !important;
}

[data-bs-theme="light"] .modal-content {
  background: #ffffff !important;
}

[data-bs-theme="light"] .card {
  background: #ffffff !important;
}

[data-bs-theme="light"] .table {
  color: var(--text-primary) !important;
}

[data-bs-theme="light"] .footer {
  background: rgba(230, 235, 245, 0.9) !important;
}

.hero-section {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  overflow: hidden;
}

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

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 87, 168, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 87, 168, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-scroll 20s linear infinite;
}

@keyframes grid-scroll {
  0% { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -40%;
  left: -10%;
  width: 70%;
  height: 140%;
  background: radial-gradient(
    ellipse at center,
    rgba(0, 87, 168, 0.15) 0%,
    rgba(0, 57, 120, 0.08) 40%,
    transparent 70%
  );
  z-index: 0;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -5%;
  width: 50%;
  height: 80%;
  background: radial-gradient(
    ellipse at center,
    rgba(255, 107, 0, 0.08) 0%,
    transparent 70%
  );
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 5rem 0;
}

.min-vh-content { min-height: calc(100vh - 120px); }

.hero-badge {
  display: inline-flex;
  align-items: center;
  background: rgba(0, 87, 168, 0.12);
  border: 1px solid rgba(0, 87, 168, 0.3);
  border-radius: 50px;
  padding: 0.4rem 1.1rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--theme-blue-light);
  animation: fadeInUp 0.5s ease 0.1s both;
}

.hero-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--text-primary);
  margin: 1rem 0;
  animation: fadeInUp 0.5s ease 0.2s both;
}

.hero-accent {
  background: linear-gradient(135deg, var(--theme-blue-light), var(--theme-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  text-shadow: none;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 540px;
  animation: fadeInUp 0.5s ease 0.3s both;
}

.hero-actions {
  margin-top: 2rem;
  animation: fadeInUp 0.5s ease 0.4s both;
}

.btn-hero {
  font-size: 1rem;
  padding: 0.75rem 2rem !important;
  border-radius: var(--radius-md) !important;
  box-shadow: 0 4px 24px rgba(0, 87, 168, 0.4);
}

.btn-outline-hero {
  display: inline-flex;
  align-items: center;
  font-family: 'Exo 2', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.75rem 2rem;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  background: transparent;
  transition: all var(--transition-med);
  text-decoration: none !important;
}

.btn-outline-hero:hover {
  border-color: var(--theme-orange);
  color: var(--theme-orange-light);
  background: rgba(255, 107, 0, 0.06);
  box-shadow: 0 0 20px rgba(255, 107, 0, 0.15);
}

.hero-terminal {
  width: 100%;
  max-width: 480px;
  background: rgba(10, 12, 18, 0.95);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-blue), 0 0 60px rgba(0, 87, 168, 0.15);
  font-family: 'JetBrains Mono', monospace;
  overflow: hidden;
  animation: fadeInUp 0.6s ease 0.5s both;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal-dot.red    { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green  { background: #28c840; }

.terminal-title {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  min-height: 160px;
  font-size: 0.85rem;
  line-height: 2;
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.term-prompt {
  color: var(--theme-orange);
  font-weight: 700;
  user-select: none;
}

.term-cmd {
  color: #e8eaf0;
}

.terminal-output {
  display: flex;
  flex-direction: column;
  padding-left: 1rem;
  margin-bottom: 0.25rem;
}

.term-out-line {
  font-size: 0.82rem;
  display: block;
}

.term-out-line.ok   { color: var(--text-secondary); }
.term-out-line.flag {
  color: #70d48a;
  text-shadow: 0 0 10px rgba(112, 212, 138, 0.5);
  font-weight: 700;
}

.terminal-cursor {
  color: var(--theme-blue-light);
  animation: cursor-blink 1.2s infinite;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.stats-section {
  background: linear-gradient(180deg, transparent, rgba(0, 87, 168, 0.04), transparent);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

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

.stat-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-blue);
  transform: translateY(-3px);
}

.stat-icon {
  font-size: 1.75rem;
  color: var(--theme-blue-light);
  margin-bottom: 0.75rem;
}

.stat-value {
  font-family: 'Rajdhani', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
}


.section-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  background: linear-gradient(135deg, var(--text-primary), var(--theme-blue-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.cat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  cursor: default;
  transition: all var(--transition-med);
}

.cat-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-blue);
  transform: translateY(-4px);
}

.cat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: rgba(0, 87, 168, 0.12);
  color: var(--cat-color, var(--theme-blue-light));
  border: 1px solid rgba(0, 87, 168, 0.2);
  transition: all var(--transition-med);
}

.cat-card:hover .cat-icon {
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 0 0 20px rgba(0, 87, 168, 0.3);
}

.cat-icon.web     { --cat-color: var(--theme-blue-light); }
.cat-icon.pwn     { background: rgba(255, 69, 96, 0.12); border-color: rgba(255, 69, 96, 0.2); }
.cat-icon.crypto  { background: rgba(240, 208, 96, 0.12); border-color: rgba(240, 208, 96, 0.2); }
.cat-icon.rev     { background: rgba(180, 75, 255, 0.12); border-color: rgba(180, 75, 255, 0.2); }
.cat-icon.forensics { background: rgba(112, 212, 138, 0.12); border-color: rgba(112, 212, 138, 0.2); }
.cat-icon.misc    { background: rgba(255, 107, 0, 0.12); border-color: rgba(255, 107, 0, 0.2); }

.cat-name {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.navbar > .container {
  height: 100% !important;
}

@media (min-width: 768px) {
  .navbar .container {
    flex-wrap: nowrap !important;
    height: 100% !important;
  }
  .navbar-collapse {
    flex-wrap: nowrap !important;
    height: 100% !important;
    align-items: center !important;
  }
  .navbar-nav {
    flex-wrap: nowrap !important;
    height: 100% !important;
    align-items: center !important;
  }
}

/* Matrix Scoreboard Styles */
.table-responsive {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.matrix-table {
  border-collapse: separate;
  border-spacing: 0;
}

.matrix-sticky-col-1,
.matrix-sticky-col-2,
.matrix-sticky-col-3 {
  position: sticky;
  z-index: 10;
  background-color: var(--bg-card);
}

/* Ensure data rows have the correct sticky background to override hover if needed */
.matrix-table tbody tr:hover .matrix-sticky-col-1,
.matrix-table tbody tr:hover .matrix-sticky-col-2,
.matrix-table tbody tr:hover .matrix-sticky-col-3 {
  background-color: var(--bg-card-hover);
}

.matrix-sticky-col-1 { left: 0; z-index: 11; }
.matrix-sticky-col-2 { left: 60px; z-index: 11; min-width: 170px; max-width: 170px; }
.matrix-sticky-col-3 { left: 230px; z-index: 11; border-right: 2px solid var(--border-subtle) !important; min-width: 80px; }

.matrix-table thead th {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: var(--bg-card-hover);
  border-bottom: 2px solid var(--border-subtle) !important;
  vertical-align: middle;
}

.matrix-table thead th.matrix-sticky-col-1,
.matrix-table thead th.matrix-sticky-col-2,
.matrix-table thead th.matrix-sticky-col-3 {
  z-index: 30; /* Both top and left sticky */
}

.matrix-cell {
  border-left: 1px solid var(--border-subtle);
  transition: background-color 0.2s ease;
  vertical-align: middle;
}

.matrix-cell:hover {
  background-color: var(--bg-card-hover) !important;
}

.matrix-solved i {
  color: #00e070;
  font-size: 1.2rem;
  filter: drop-shadow(0 0 3px rgba(0, 224, 112, 0.5));
}