/* =============================================
   CYBERHUB - STYLES PRINCIPAUX
   Red Team & Blue Team Design
   ============================================= */

:root {
    /* Red Team Colors */
    --red-primary: #DC2626;
    --red-dark: #991B1B;
    --red-light: #FEE2E2;
    --red-accent: #EF4444;

    /* Blue Team Colors */
    --blue-primary: #2563EB;
    --blue-dark: #1E40AF;
    --blue-light: #DBEAFE;
    --blue-accent: #3B82F6;

    /* Neutral Colors */
    --dark: #0F172A;
    --dark-secondary: #1E293B;
    --gray-900: #111827;
    --gray-800: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F9FAFB;
    --white: #FFFFFF;

    /* Functional Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;

    /* Semantic Colors */
    --bg-primary: var(--gray-900);
    --bg-secondary: var(--gray-800);
    --bg-tertiary: var(--gray-700);
    --text-primary: var(--white);
    --text-secondary: var(--gray-300);
    --text-muted: var(--gray-500);
    --border: var(--gray-700);

    /* Layout */
    --sidebar-width: 280px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-red: 0 0 30px rgba(220, 38, 38, 0.3);
    --shadow-blue: 0 0 30px rgba(37, 99, 235, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* =============================================
   ANIMATIONS
   ============================================= */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes glow-red {
    0%, 100% { box-shadow: 0 0 20px rgba(220, 38, 38, 0.4); }
    50% { box-shadow: 0 0 40px rgba(220, 38, 38, 0.6); }
}

@keyframes glow-blue {
    0%, 100% { box-shadow: 0 0 20px rgba(37, 99, 235, 0.4); }
    50% { box-shadow: 0 0 40px rgba(37, 99, 235, 0.6); }
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* =============================================
   TOP BAR
   ============================================= */

.top-bar {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: 60px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 90;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-base);
}

.btn-outline:hover {
    border-color: var(--blue-primary);
    color: var(--blue-accent);
    background: rgba(37, 99, 235, 0.1);
}

.btn-admin {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.1), rgba(37, 99, 235, 0.1));
    border-color: var(--gray-600);
}

.btn-admin:hover {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.2), rgba(37, 99, 235, 0.2));
    border-color: var(--gray-400);
    color: var(--text-primary);
}

/* =============================================
   LAYOUT
   ============================================= */

.app {
    display: flex;
    min-height: 100vh;
}

/* =============================================
   SIDEBAR
   ============================================= */

.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-secondary) 100%);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 20px 16px 16px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 26px;
    animation: float 3s ease-in-out infinite;
    flex-shrink: 0;
}

.logo-icon-svg {
    flex-shrink: 0;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 0 6px rgba(239, 68, 68, 0.3));
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--red-primary) 0%, var(--blue-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.3px;
}

.logo-by-caplogy {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    padding: 7px 14px;
    margin-left: 2px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 20px;
    width: fit-content;
}

.logo-by-text {
    font-size: 13px;
    font-weight: 400;
    color: rgba(255,255,255,0.4);
    letter-spacing: 0.05em;
    text-transform: lowercase;
    font-style: italic;
}

.caplogy-logo-img {
    height: 36px;
    width: auto;
    opacity: 0.9;
    filter: brightness(0) invert(1);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.sidebar-nav::-webkit-scrollbar {
    width: 6px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--gray-600);
    border-radius: 3px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: 4px;
}

.nav-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--red-primary) 0%, var(--blue-primary) 100%);
    color: var(--white);
    font-weight: 600;
}

.nav-icon {
    font-size: 18px;
}

.nav-section {
    margin-top: 8px;
}

.nav-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
    user-select: none;
}

.nav-section-header:hover {
    background: rgba(255,255,255,0.05);
}

.nav-section-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--gray-500);
    letter-spacing: 1px;
}

/* Hackathon section yellow accent */
#chevron-competitions { color: #f59e0b; }
.nav-section-header:has(#chevron-competitions) .nav-section-title {
    color: #fbbf24;
}
.nav-section-header:has(#chevron-competitions):hover .nav-section-title {
    color: #fde68a;
}

.nav-chevron {
    font-size: 9px;
    color: var(--gray-500);
    transition: transform 0.25s ease;
}

.nav-chevron.open {
    transform: rotate(90deg);
}

.nav-section-content {
    display: none;
    overflow: hidden;
    animation: slideDown 0.2s ease;
}

.nav-section-content.open {
    display: block;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.theme-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 14px;
}

.theme-nav-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.theme-nav-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

.theme-nav-item.red:hover,
.theme-nav-item.red.active {
    background: rgba(220, 38, 38, 0.2);
    color: var(--red-accent);
}

.theme-nav-item.blue:hover,
.theme-nav-item.blue.active {
    background: rgba(37, 99, 235, 0.2);
    color: var(--blue-accent);
}

.theme-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.sidebar-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.2);
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.user-badge:hover {
    background: rgba(255, 255, 255, 0.06);
}

.user-badge-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue-primary), #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.user-badge.connected .user-badge-avatar {
    background: linear-gradient(135deg, #10b981, #059669);
}

.user-badge-name {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-badge.connected .user-badge-name {
    color: var(--text-primary);
}

.btn-small {
    width: 100%;
    padding: 8px 16px;
    font-size: 13px;
}

/* =============================================
   AUTH MODALS
   ============================================= */

.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.auth-modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: 90%;
    max-width: 440px;
    padding: 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: authModalIn 0.25s ease-out;
    overflow: hidden;
}

@keyframes authModalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.auth-modal-close {
    position: absolute;
    top: 12px;
    right: 14px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    z-index: 1;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}

.auth-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.auth-modal-header {
    text-align: center;
    padding: 32px 32px 16px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.1));
    border-bottom: 1px solid var(--border);
}

.auth-modal-icon {
    font-size: 40px;
    margin-bottom: 8px;
}

.auth-modal-header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.auth-modal-header p {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
}

.auth-modal-form {
    padding: 24px 32px 32px;
}

.auth-field {
    margin-bottom: 16px;
}

.auth-field label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.auth-field input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
    box-sizing: border-box;
}

.auth-field input:focus {
    outline: none;
    border-color: var(--blue-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.auth-field-hint {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.auth-field-row {
    display: flex;
    gap: 12px;
}

.auth-field-row .auth-field {
    flex: 1;
}

.auth-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
}

.auth-submit-btn {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-top: 4px;
}

.auth-switch {
    text-align: center;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-muted);
}

.auth-switch a {
    color: var(--blue-primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}

.auth-logout-btn {
    width: 100%;
    margin-top: 16px;
    color: #ef4444 !important;
    border-color: rgba(239, 68, 68, 0.3) !important;
}

.auth-logout-btn:hover {
    background: rgba(239, 68, 68, 0.1) !important;
}

.profile-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.profile-stat {
    text-align: center;
    flex: 1;
}

.profile-stat-value {
    display: block;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.profile-stat-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* =============================================
   MAIN CONTENT
   ============================================= */

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    margin-top: 60px;
    padding: 32px 40px;
    min-height: calc(100vh - 60px);
}

.content-header {
    margin-bottom: 32px;
    animation: fadeInUp var(--transition-slow);
}

.content-header h1 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
}

.content-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* =============================================
   VIEWS
   ============================================= */

.view {
    display: none;
    animation: fadeIn var(--transition-base);
}

.view.active {
    display: block;
}

/* =============================================
   TEAM SELECTOR
   ============================================= */

.team-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.team-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.team-card.red-team::before {
    background: linear-gradient(90deg, var(--red-dark), var(--red-primary), var(--red-accent));
}

.team-card.blue-team::before {
    background: linear-gradient(90deg, var(--blue-dark), var(--blue-primary), var(--blue-accent));
}

.team-card.hackathon-team::before {
    background: linear-gradient(90deg, #b45309, #f59e0b, #fbbf24);
}

.team-card.red-team:hover {
    border-color: var(--red-primary);
    transform: translateY(-4px);
    animation: glow-red 2s ease-in-out infinite;
}

.team-card.blue-team:hover {
    border-color: var(--blue-primary);
    transform: translateY(-4px);
    animation: glow-blue 2s ease-in-out infinite;
}

.team-card.hackathon-team:hover {
    border-color: #f59e0b;
    transform: translateY(-4px);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
}

.team-card.hackathon-team h2 { color: #fbbf24; }

.team-subcategories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.subcat-tag {
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 20px;
    white-space: nowrap;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.red-team .subcat-tag {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.blue-team .subcat-tag {
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}

.hackathon-team .subcat-tag {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fde68a;
}

.team-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.team-card h2 {
    font-size: 24px;
    margin-bottom: 8px;
}

.team-card.red-team h2 { color: var(--red-accent); }
.team-card.blue-team h2 { color: var(--blue-accent); }

.team-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.team-stats {
    font-size: 13px;
    color: var(--gray-500);
}

/* =============================================
   SECTION TITLE
   ============================================= */

.section-title {
    margin-bottom: 24px;
}

.section-title h2 {
    font-size: 20px;
    font-weight: 700;
}

/* =============================================
   THEMES GRID
   ============================================= */

.themes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.theme-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.theme-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--theme-color);
}

.theme-card:hover {
    border-color: var(--theme-color);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.theme-card.red { --theme-color: var(--red-primary); }
.theme-card.blue { --theme-color: var(--blue-primary); }

.theme-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.theme-card-icon {
    font-size: 28px;
}

.theme-card h3 {
    font-size: 17px;
    font-weight: 600;
}

.theme-card p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 16px;
    line-height: 1.6;
}

.theme-card-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--gray-500);
}

/* =============================================
   EXERCISES LIST
   ============================================= */

.exercises-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exercise-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.exercise-card:hover {
    border-color: var(--gray-500);
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.exercise-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.exercise-info p {
    color: var(--text-secondary);
    font-size: 13px;
}

.exercise-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* =============================================
   BADGES
   ============================================= */

.badge {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge.débutant, .badge.debutant {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge.intermédiaire, .badge.intermediaire {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge.avancé, .badge.avance {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.badge.expert {
    background: rgba(139, 92, 246, 0.2);
    color: #8B5CF6;
}

.badge-info {
    padding: 4px 12px;
    background: var(--bg-tertiary);
    border-radius: 50px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* =============================================
   EXERCISE VIEW
   ============================================= */

.exercise-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.exercise-badges {
    display: flex;
    gap: 8px;
}

.exercise-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
}

.tab {
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.tab:hover {
    border-color: var(--gray-500);
    color: var(--text-primary);
}

.tab.active {
    background: linear-gradient(135deg, var(--red-primary), var(--blue-primary));
    border-color: transparent;
    color: var(--white);
}

.tab-content {
    display: none;
    animation: fadeInUp var(--transition-base);
}

.tab-content.active {
    display: block;
}

/* =============================================
   MARKDOWN CONTENT
   ============================================= */

.markdown-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
    line-height: 1.8;
}

.markdown-content h1 {
    font-size: 28px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

.markdown-content h2 {
    font-size: 22px;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.markdown-content h3 {
    font-size: 18px;
    margin-top: 24px;
    margin-bottom: 8px;
}

.markdown-content p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.markdown-content code {
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--red-accent);
}

.markdown-content pre {
    background: var(--dark);
    border-radius: var(--radius-md);
    padding: 20px;
    overflow-x: auto;
    margin: 20px 0;
    border: 1px solid var(--border);
}

.markdown-content pre code {
    background: transparent;
    padding: 0;
    color: var(--gray-300);
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.markdown-content th,
.markdown-content td {
    padding: 12px;
    border: 1px solid var(--border);
    text-align: left;
}

.markdown-content th {
    background: var(--bg-tertiary);
}

.markdown-content ul,
.markdown-content ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.markdown-content li {
    margin-bottom: 8px;
}

/* =============================================
   QUESTIONS
   ============================================= */

.questions-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.questions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.questions-header h3 {
    font-size: 18px;
}

.score-display {
    background: var(--bg-tertiary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.question-item {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.question-item.correct {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.question-item.incorrect {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.question-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 16px;
}

.question-number {
    font-weight: 600;
    color: var(--text-secondary);
}

.question-points {
    font-size: 13px;
    color: var(--gray-500);
}

.question-text {
    font-size: 15px;
    margin-bottom: 16px;
    font-weight: 500;
}

.question-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.question-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.question-option:hover {
    border-color: var(--gray-500);
}

.question-option.selected {
    border-color: var(--blue-primary);
    background: rgba(37, 99, 235, 0.1);
}

.question-option input {
    display: none;
}

.question-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
}

.question-input:focus {
    outline: none;
    border-color: var(--blue-primary);
}

.question-hint {
    margin-top: 12px;
    padding: 12px;
    background: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--warning);
    display: none;
}

.btn-show-hint {
    margin-top: 8px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-show-hint:hover {
    border-color: var(--warning);
    color: var(--warning);
}

.btn-submit-all {
    margin-top: 24px;
    width: 100%;
}

.question-result {
    margin-top: 12px;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
}

.question-result.correct {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.question-result.incorrect {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* =============================================
   LAB CONTAINER
   ============================================= */

.lab-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.lab-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.lab-status {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.lab-status::before {
    content: '';
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-500);
}

.lab-status.running::before {
    background: var(--success);
    animation: pulse 1.5s ease-in-out infinite;
}

.lab-status.starting::before {
    background: var(--warning);
    animation: pulse 0.8s ease-in-out infinite;
}

.vnc-container {
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vnc-placeholder {
    color: var(--text-muted);
    font-size: 16px;
}

/* =============================================
   BUTTONS
   ============================================= */

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue-primary), var(--blue-accent));
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-blue);
}

.btn-danger {
    background: linear-gradient(135deg, var(--red-dark), var(--red-primary));
    color: var(--white);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-red);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    margin-bottom: 24px;
    transition: all var(--transition-base);
}

.btn-back:hover {
    border-color: var(--gray-500);
    color: var(--text-primary);
}

/* =============================================
   SCOREBOARD
   ============================================= */

.scoreboard-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
}

.filter-btn {
    padding: 10px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--gray-500);
}

.filter-btn.active {
    border-color: var(--gray-400);
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.filter-btn.red.active {
    border-color: var(--red-primary);
    color: var(--red-accent);
    background: rgba(220, 38, 38, 0.1);
}

.filter-btn.blue.active {
    border-color: var(--blue-primary);
    color: var(--blue-accent);
    background: rgba(37, 99, 235, 0.1);
}

.scoreboard-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.scoreboard-podium {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 16px;
    padding: 32px;
    background: linear-gradient(180deg, var(--bg-tertiary), var(--bg-secondary));
}

.podium-item {
    text-align: center;
    padding: 20px;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    min-width: 140px;
}

.podium-item.first {
    transform: scale(1.1);
    border-color: #FFD700;
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.3);
}

.podium-item.second {
    border-color: #C0C0C0;
}

.podium-item.third {
    border-color: #CD7F32;
}

.podium-rank {
    font-size: 32px;
    margin-bottom: 8px;
}

.podium-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.podium-points {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--red-primary), var(--blue-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.scoreboard-table-container {
    padding: 0 24px 24px;
}

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

.scoreboard-table th,
.scoreboard-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.scoreboard-table th {
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
}

.scoreboard-table tr:hover {
    background: var(--bg-tertiary);
}

.rank-cell {
    font-weight: 700;
    font-size: 18px;
}

.rank-1 { color: #FFD700; }
.rank-2 { color: #C0C0C0; }
.rank-3 { color: #CD7F32; }

.points-red {
    color: var(--red-accent);
}

.points-blue {
    color: var(--blue-accent);
}

.points-total {
    font-weight: 700;
    font-size: 16px;
}

/* =============================================
   CTF MODULE
   ============================================= */

:root {
    --ctf-primary: #DC2626;
    --ctf-secondary: #2563EB;
    --ctf-accent: #EF4444;
    --ctf-glow: #DC262680;
    --ctf-neon: #ff3333;
    --ctf-gold: #F59E0B;
    --ctf-silver: #94A3B8;
    --ctf-bronze: #D97706;
}

/* LIVE badge in nav */
.ctf-live-badge {
    font-size: 9px;
    font-weight: 700;
    background: var(--red-primary);
    color: #fff;
    padding: 2px 6px;
    border-radius: 8px;
    margin-left: 8px;
    animation: ctfPulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 8px var(--ctf-glow);
}

@keyframes ctfPulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--ctf-glow); }
    50% { opacity: 0.6; box-shadow: 0 0 2px var(--ctf-glow); }
}

/* CTF Header cyber style */
#view-ctf .content-header h1 {
    font-size: 28px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
    background: linear-gradient(90deg, var(--red-accent), var(--red-primary), var(--blue-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Event title — HACKATHON with hacker animation */
.ctf-event-header-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ctf-back-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 0;
    flex-shrink: 0;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
}

.ctf-back-btn::before {
    content: '←';
    font-size: 20px;
    font-weight: 900;
}

.ctf-back-btn:hover {
    color: var(--red-accent);
}

#view-ctf-event .content-header h1 {
    font-family: 'Courier New', monospace;
    font-size: 32px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 6px;
    color: var(--red-accent);
    position: relative;
    overflow: hidden;
    animation: ctfGlitch 3s infinite;
}

#view-ctf-event .content-header h1::before,
#view-ctf-event .content-header h1::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#view-ctf-event .content-header h1::before {
    color: var(--blue-accent);
    animation: ctfGlitchLeft 2s infinite;
    clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
}

#view-ctf-event .content-header h1::after {
    color: var(--red-primary);
    animation: ctfGlitchRight 2.5s infinite;
    clip-path: polygon(0 66%, 100% 66%, 100% 100%, 0 100%);
}

@keyframes ctfGlitch {
    0%, 90%, 100% { transform: none; }
    92% { transform: skewX(2deg); }
    94% { transform: skewX(-1deg); }
    96% { transform: skewX(0.5deg); }
}

@keyframes ctfGlitchLeft {
    0%, 88%, 100% { transform: none; opacity: 0; }
    89% { transform: translateX(-3px); opacity: 1; }
    91% { transform: translateX(2px); opacity: 1; }
    93% { transform: none; opacity: 0; }
}

@keyframes ctfGlitchRight {
    0%, 92%, 100% { transform: none; opacity: 0; }
    93% { transform: translateX(3px); opacity: 1; }
    95% { transform: translateX(-2px); opacity: 1; }
    97% { transform: none; opacity: 0; }
}

#view-ctf .content-header p,
#view-ctf-event .content-header p {
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    font-size: 13px;
    letter-spacing: 1px;
    border-left: 3px solid var(--red-primary);
    padding-left: 10px;
}

/* Events grid */
.ctf-events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.ctf-event-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.ctf-event-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--red-primary), var(--red-accent), var(--blue-primary), var(--blue-accent));
    animation: ctfGradient 4s ease infinite;
    background-size: 300% 300%;
}

@keyframes ctfGradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.ctf-event-card.ctf-status-active {
    border-color: var(--red-primary)40;
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.04), rgba(37, 99, 235, 0.04), var(--bg-secondary));
}

.ctf-event-card.ctf-status-finished::before {
    background: var(--gray-600);
    animation: none;
}

.ctf-event-card:hover {
    border-color: var(--red-accent);
    transform: translateY(-4px);
    box-shadow: 0 0 25px rgba(220, 38, 38, 0.15), 0 0 50px rgba(37, 99, 235, 0.08);
}

.ctf-event-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.ctf-event-card-header h3 {
    font-size: 22px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: linear-gradient(90deg, var(--red-accent), var(--blue-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ctf-status-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 12px;
    white-space: nowrap;
}

.ctf-status-badge.ctf-status-active {
    background: rgba(220, 38, 38, 0.15);
    color: var(--red-accent);
    border: 1px solid var(--red-primary)30;
}

.ctf-status-badge.ctf-status-finished {
    background: rgba(148, 163, 184, 0.15);
    color: var(--gray-400);
}

.ctf-event-card-desc {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 16px;
    line-height: 1.5;
}

.ctf-event-card-stats {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-muted);
}

/* Event detail meta */
.ctf-event-meta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.ctf-meta-item {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 4px 10px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    border: 1px solid var(--border);
}

/* Tabs */
.ctf-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 4px;
    margin-bottom: 24px;
}

.ctf-tab {
    flex: 1;
    padding: 10px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.ctf-tab:hover {
    background: var(--bg-tertiary);
}

.ctf-tab.active {
    background: linear-gradient(135deg, var(--red-primary), var(--red-dark));
    color: #fff;
    box-shadow: 0 0 12px var(--ctf-glow);
}

/* Category sections */
.ctf-category-section {
    margin-bottom: 32px;
}

.ctf-category-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ctf-category-icon {
    font-size: 22px;
}

/* Challenges grid */
.ctf-challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}

.ctf-challenge-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.ctf-challenge-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 4px;
    background: var(--ctf-cat-color, var(--ctf-primary));
}

.ctf-challenge-card:hover {
    border-color: var(--ctf-cat-color, var(--red-accent));
    transform: translateX(4px);
    box-shadow: 0 0 15px rgba(220, 38, 38, 0.1);
}

.ctf-challenge-card.ctf-challenge-locked {
    opacity: 0.4;
    cursor: not-allowed;
    filter: grayscale(0.5);
}

.ctf-challenge-card.ctf-challenge-locked:hover {
    transform: none;
    border-color: var(--border);
    box-shadow: none;
}

.ctf-challenge-card.ctf-challenge-solved {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.05);
}

.ctf-challenge-card.ctf-challenge-solved::before {
    background: var(--success) !important;
}

.ctf-challenge-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.ctf-challenge-status {
    font-size: 18px;
}

.ctf-challenge-points {
    font-size: 14px;
    font-weight: 700;
    color: var(--red-accent);
    font-family: 'Courier New', monospace;
}

.ctf-challenge-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.3;
}

.ctf-challenge-card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ctf-difficulty-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 6px;
    text-transform: capitalize;
}

.ctf-solve-count {
    font-size: 11px;
    color: var(--text-muted);
}

/* Challenge detail */
#view-ctf-challenge .content-header h1 {
    font-family: 'Courier New', monospace;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.ctf-challenge-header {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ctf-challenge-body {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ctf-challenge-description {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--red-primary);
    font-family: 'Courier New', monospace;
}

/* Files */
.ctf-files-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.ctf-file-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
    transition: all var(--transition-base);
}

.ctf-file-link:hover {
    border-color: var(--blue-accent);
    background: rgba(37, 99, 235, 0.05);
}

/* Hints */
.ctf-hints-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ctf-hint-item {
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.ctf-hint-unlocked {
    border-color: var(--blue-primary);
    background: rgba(37, 99, 235, 0.05);
}

.ctf-hint-content {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.ctf-hint-btn {
    font-size: 12px;
}

/* Flag form */
.ctf-flag-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    border-left: 3px solid var(--red-primary);
}

.ctf-flag-form h3 {
    margin-bottom: 16px;
    font-size: 16px;
    color: var(--red-accent);
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

.ctf-flag-input-group {
    display: flex;
    gap: 10px;
}

.ctf-flag-input-group input {
    flex: 1;
    padding: 12px 16px;
    background: var(--dark);
    border: 1px solid var(--red-primary)40;
    border-radius: var(--radius-sm);
    color: var(--red-accent);
    font-size: 15px;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

.ctf-flag-input-group input::placeholder {
    color: var(--gray-600);
}

.ctf-flag-input-group input:focus {
    border-color: var(--red-primary);
    outline: none;
    box-shadow: 0 0 15px var(--ctf-glow), 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.ctf-submit-btn {
    background: linear-gradient(135deg, var(--red-primary), var(--red-dark)) !important;
    color: #fff !important;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
    border: none;
}

.ctf-submit-btn:hover {
    background: linear-gradient(135deg, var(--red-accent), var(--red-primary)) !important;
    box-shadow: 0 0 20px var(--ctf-glow);
}

.ctf-flag-feedback {
    margin-top: 12px;
}

.ctf-feedback-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: 1px solid rgba(16, 185, 129, 0.3);
    animation: ctfSlideIn 0.3s ease;
}

.ctf-feedback-error {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    animation: ctfShake 0.4s ease;
}

.ctf-feedback-loading {
    color: var(--text-muted);
    font-style: italic;
}

@keyframes ctfSlideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes ctfShake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

.ctf-solved-banner {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    padding: 16px;
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* CTF Scoreboard table */
.ctf-scoreboard-table {
    width: 100%;
    border-collapse: collapse;
}

.ctf-scoreboard-table th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}

.ctf-scoreboard-table td {
    padding: 12px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

.ctf-top-1 td { background: rgba(245, 158, 11, 0.08); }
.ctf-top-2 td { background: rgba(148, 163, 184, 0.08); }
.ctf-top-3 td { background: rgba(217, 119, 6, 0.08); }

.ctf-rank {
    font-weight: 700;
    color: var(--text-primary);
}

.ctf-top-1 .ctf-rank { color: var(--ctf-gold); }
.ctf-top-2 .ctf-rank { color: var(--ctf-silver); }
.ctf-top-3 .ctf-rank { color: var(--ctf-bronze); }

.ctf-player {
    font-weight: 500;
}

.ctf-points-cell {
    font-weight: 700;
    color: var(--red-accent);
}

/* Progress */
.ctf-progress-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.ctf-progress-stat {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
}

.ctf-progress-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--red-accent);
}

.ctf-progress-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.ctf-progress-bar-container {
    background: var(--bg-secondary);
    border-radius: 8px;
    height: 24px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
}

.ctf-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--red-primary), var(--red-accent), var(--blue-primary));
    border-radius: 8px;
    transition: width 0.6s ease;
}

.ctf-progress-pct {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 11px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Solves list */
.ctf-solves-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
}

.ctf-solve-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 13px;
}

.ctf-solve-title {
    flex: 1;
    font-weight: 500;
}

.ctf-solve-cat {
    color: var(--text-muted);
    font-size: 11px;
}

.ctf-solve-pts {
    color: var(--red-accent);
    font-weight: 700;
}

.ctf-solve-time {
    color: var(--text-muted);
    font-size: 11px;
}

/* Quick Stats Bar */
.ctf-quick-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.ctf-qs-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.ctf-qs-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--red-primary), var(--blue-primary));
}

.ctf-qs-value {
    display: block;
    font-size: 24px;
    font-weight: 800;
    color: var(--red-accent);
    font-family: 'Courier New', monospace;
}

.ctf-qs-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.ctf-qs-live {
    animation: ctfPulse 2s ease-in-out infinite;
}

/* Podium */
.ctf-podium {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 32px;
    padding: 24px 0;
}

.ctf-podium-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    min-width: 140px;
    position: relative;
    overflow: hidden;
}

.ctf-podium-1 { order: 2; transform: scale(1.1); }
.ctf-podium-2 { order: 1; }
.ctf-podium-3 { order: 3; }

.ctf-podium-1::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: #F59E0B; }
.ctf-podium-2::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: #94A3B8; }
.ctf-podium-3::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: #D97706; }

.ctf-podium-medal { font-size: 28px; }

.ctf-podium-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--red-primary), var(--blue-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
}

.ctf-podium-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    text-align: center;
}

.ctf-podium-pts {
    font-size: 18px;
    font-weight: 800;
    font-family: 'Courier New', monospace;
}

.ctf-podium-solves {
    font-size: 11px;
    color: var(--text-muted);
}

/* Team */
.ctf-team-none {
    text-align: center;
    padding: 40px 20px;
}

.ctf-team-none-icon { font-size: 48px; margin-bottom: 12px; }
.ctf-team-none h3 { font-size: 18px; color: var(--text-primary); margin-bottom: 8px; }
.ctf-team-none p { color: var(--text-muted); margin-bottom: 24px; font-size: 14px; }

.ctf-team-forms {
    display: flex;
    gap: 24px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.ctf-team-form-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    min-width: 250px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ctf-team-form-card h4 {
    color: var(--text-primary);
    font-size: 15px;
    margin-bottom: 4px;
}

.ctf-team-form-divider {
    color: var(--text-muted);
    font-weight: 700;
    font-size: 14px;
}

.ctf-team-input {
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    width: 100%;
}

.ctf-team-input:focus {
    border-color: var(--red-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.ctf-team-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    border-left: 4px solid var(--red-primary);
}

.ctf-team-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 16px;
}

.ctf-team-name {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
}

.ctf-team-captain-badge {
    font-size: 12px;
    color: var(--ctf-gold);
    margin-left: 8px;
}

.ctf-team-invite {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.ctf-team-code {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    padding: 4px 12px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-weight: 700;
    color: var(--red-accent);
    font-size: 14px;
    letter-spacing: 2px;
    user-select: all;
}

.ctf-team-members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.ctf-team-member {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.ctf-team-member-me {
    border-color: var(--red-primary)40;
    background: rgba(220, 38, 38, 0.03);
}

.ctf-team-member-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--red-primary), var(--blue-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 15px;
    flex-shrink: 0;
}

.ctf-team-member-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
}

.ctf-team-member-code {
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
}

/* Team Stats & Member Ranking */
.ctf-team-total-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 20px 0;
    padding: 16px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.ctf-team-total-item {
    text-align: center;
}

.ctf-team-total-value {
    display: block;
    font-size: 26px;
    font-weight: 800;
    color: var(--red-accent);
    font-family: 'Courier New', monospace;
}

.ctf-team-total-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.ctf-team-members-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ctf-team-member-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.ctf-team-member-row:hover {
    border-color: var(--red-primary)40;
}

.ctf-team-member-row.ctf-team-member-me {
    border-color: var(--red-primary)40;
    background: rgba(220, 38, 38, 0.03);
    border-left: 3px solid var(--red-primary);
}

.ctf-team-member-rank {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-muted);
    min-width: 32px;
    text-align: center;
    font-family: 'Courier New', monospace;
}

.ctf-team-member-info {
    flex: 1;
    min-width: 0;
}

.ctf-team-member-score {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.ctf-team-member-pts {
    font-size: 16px;
    font-weight: 700;
    color: var(--red-accent);
    font-family: 'Courier New', monospace;
}

.ctf-team-member-solves {
    font-size: 11px;
    color: var(--text-muted);
}

/* Rules */
.ctf-rules-text {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* CTF Toast Notification */
.ctf-toast {
    position: fixed;
    top: 24px;
    right: 24px;
    background: linear-gradient(135deg, #10B981, #059669);
    color: #fff;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 8px 32px rgba(16, 185, 129, 0.3);
    z-index: 10000;
    opacity: 0;
    transform: translateX(100px);
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: none;
}

.ctf-toast.ctf-toast-visible {
    opacity: 1;
    transform: translateX(0);
}

/* =============================================
   LOADING
   ============================================= */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    z-index: 1000;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--blue-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 1200px) {
    .team-selector {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .team-selector {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .themes-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        padding: 20px;
    }

    .exercise-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .scoreboard-podium {
        flex-direction: column;
        align-items: center;
    }

    .podium-item.first {
        order: -1;
    }
}

/* =============================================
   SCROLLBAR
   ============================================= */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-600);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* ==========================================
   CTF Event Countdown Timer
   ========================================== */
.ctf-countdown-banner {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.ctf-countdown-banner .countdown-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ctf-countdown-banner .countdown-label {
    font-size: 13px;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.ctf-countdown-banner .countdown-dates {
    font-size: 14px;
    color: var(--gray-300);
}

.ctf-countdown-timer {
    display: flex;
    gap: 12px;
    align-items: center;
}

.ctf-countdown-timer .time-block {
    text-align: center;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 8px;
    padding: 8px 12px;
    min-width: 60px;
}

.ctf-countdown-timer .time-value {
    font-size: 28px;
    font-weight: 800;
    color: #fbbf24;
    font-family: 'JetBrains Mono', monospace;
    line-height: 1;
}

.ctf-countdown-timer .time-label {
    font-size: 10px;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.ctf-countdown-timer .time-separator {
    font-size: 24px;
    font-weight: 700;
    color: #f59e0b;
    opacity: 0.5;
}

.ctf-countdown-status {
    font-size: 14px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.ctf-countdown-status.live {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    animation: pulse 2s infinite;
}

.ctf-countdown-status.upcoming {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.ctf-countdown-status.ended {
    background: rgba(107, 114, 128, 0.2);
    color: var(--gray-400);
    border: 1px solid rgba(107, 114, 128, 0.3);
}