/* Updated BlueOps CTF - Modern Dark Theme */
:root {
    --primary-color: #3A86FF;
    --primary-accent: #5F6FFF;
    --secondary-color: #A259FF;
    --success-color: #56F09F;
    --danger-color: #FF5C8D;
    --warning-color: #FFD166;
    --info-color: #6EDFF6;
    --purple-accent: #7C3AED;
    --light-color: #F8F8FF;
    --text-main: #F8F8FF;
    --text-light: #E0E0E0;
    --text-muted: #B0A8B9;
    --bg-main: #18122B;
    --bg-sidebar: #231942;
    --bg-card: #2D3250;
    --bg-widget: #3E3B6B;
    --border-color: #3E3B6B;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    background: var(--bg-sidebar);
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: #505050;
}

/* Navigation */
.navbar, .navbar-brand {
    background-color: var(--bg-sidebar) !important;
    color: var(--text-main) !important;
}

.navbar-nav .nav-link {
    color: var(--text-light) !important;
}

.navbar-nav .nav-link.active, .navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
}

.navbar-nav .nav-link.active {
    font-weight: 600;
}

/* Cards */
.card, .modal-content, .table, .dropdown-menu {
    background-color: var(--bg-card) !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

.card-header, .card-footer, .modal-header, .modal-footer {
    background-color: var(--bg-widget) !important;
    color: var(--text-light) !important;
}

/* Removed general card hover effect to prevent clickable appearance on challenge cards */

.card-header {
    font-weight: 600;
}

.card-footer {
    border-top: 1px solid var(--border-color);
}

/* Challenge Cards */
.challenge-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.challenge-card .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.challenge-card .card-footer {
    margin-top: auto;
}

.challenge-card.solved {
    border-color: var(--success-color) !important;
}

.challenge-card.solved .card-header {
    background-color: rgba(25, 135, 84, 0.1);
}

.challenge-card.pending-review {
    border-color: var(--warning-color) !important;
}

.challenge-card.pending-review .card-header {
    background-color: rgba(255, 209, 102, 0.1);
}

/* Buttons */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.2s ease-in-out;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-accent));
    color: var(--light-color) !important;
    border: none;
}

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

.btn-success {
    background: var(--success-color);
    color: var(--bg-main) !important;
    border: none;
}

.btn-warning {
    background: var(--warning-color);
    color: var(--bg-main) !important;
    border: none;
}

.btn-danger {
    background: var(--danger-color);
    color: var(--bg-main) !important;
    border: none;
}

.btn-info {
    background: var(--info-color);
    color: var(--bg-main) !important;
    border: none;
}

.btn-secondary, .btn-purple {
    background: var(--purple-accent);
    color: var(--light-color) !important;
    border: none;
}

/* Forms */
.form-control, .form-select {
    background-color: var(--bg-widget);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(58,134,255,0.25);
}

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

.form-label {
    color: var(--text-light);
}

/* Tables */
.table {
    color: var(--text-main);
}

.table-dark {
    background-color: var(--bg-widget);
}

.table-dark th {
    background-color: var(--bg-widget) !important;
    color: var(--text-light) !important;
}

.table-dark td {
    border-color: var(--border-color);
    vertical-align: middle;
}

.table-dark tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

/* Badges */
.badge {
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
    border-radius: 0.375rem;
}

.badge.bg-success {
    background: var(--success-color) !important;
    color: var(--bg-main) !important;
}

.badge.bg-warning {
    background: var(--warning-color) !important;
    color: var(--bg-main) !important;
}

.badge.bg-danger {
    background: var(--danger-color) !important;
    color: var(--bg-main) !important;
}

.badge.bg-primary {
    background: var(--primary-color) !important;
    color: var(--light-color) !important;
}

.badge.bg-info {
    background: var(--info-color) !important;
    color: var(--bg-main) !important;
}

.badge.bg-secondary, .badge.bg-purple {
    background: var(--purple-accent) !important;
    color: var(--light-color) !important;
}

/* Team invitation notification badge */
.badge.bg-warning.text-dark {
    background: var(--warning-color) !important;
    color: var(--bg-main) !important;
}

/* User score badge */
.user-score {
    font-weight: 600;
    font-size: 0.85em;
}

.recent-solve-score {
    font-weight: 600;
    font-size: 0.85em;
    color: var(--success-color);
}

/* Alerts */
.alert {
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(86, 240, 159, 0.1) !important;
    color: var(--success-color) !important;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: rgba(255, 92, 141, 0.1) !important;
    color: var(--danger-color) !important;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: rgba(255, 209, 102, 0.1) !important;
    color: var(--warning-color) !important;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: rgba(110, 223, 246, 0.1) !important;
    color: var(--info-color) !important;
    border-left: 4px solid var(--info-color);
}

/* Modals */
.modal-title {
    color: var(--text-main);
    font-weight: 600;
}

/* Dropdowns */
.dropdown-item {
    color: var(--text-main);
    transition: background-color 0.2s ease-in-out;
}

.dropdown-item:hover {
    background-color: var(--bg-widget);
    color: var(--text-main);
}

.dropdown-divider {
    border-color: var(--border-color);
}

/* Progress bars */
.progress {
    background-color: var(--bg-widget);
    height: 0.5rem;
    border-radius: 0.25rem;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-accent));
}

/* Pagination */
.pagination {
    justify-content: center;
}

.page-link {
    background-color: var(--bg-widget);
    border-color: var(--border-color);
    color: var(--text-main);
    border-radius: 0.375rem;
    margin: 0 0.125rem;
}

.page-link:hover {
    background-color: var(--bg-widget);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-accent));
    border-color: var(--primary-color);
}

.page-item.disabled .page-link {
    background-color: var(--bg-widget);
    border-color: var(--border-color);
    color: var(--text-muted);
}

/* Scoreboard */
.scoreboard-row {
    transition: background-color 0.2s ease-in-out;
}

.scoreboard-row:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.scoreboard-row.current-user {
    background-color: rgba(0, 123, 255, 0.1);
    border-left: 4px solid var(--primary-color);
}

/* Team cards */
.team-card {
    transition: transform 0.2s ease-in-out;
}

.team-card:hover {
    transform: translateY(-2px);
}

.team-member-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 0.875rem;
}

/* Challenge difficulty colors */
.difficulty-easy {
    color: var(--success-color);
}

.difficulty-medium {
    color: var(--warning-color);
}

.difficulty-hard {
    color: var(--danger-color);
}

.difficulty-expert {
    color: var(--dark-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Loading states */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Notifications */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    min-width: 300px;
    max-width: 400px;
    animation: slideInRight 0.3s ease-in-out;
    box-shadow: 0 4px 16px rgba(0,0,0,0.5);
    opacity: 1;
}

/* Success notification styling */
.notification.alert-success {
    background: #198754 !important;
    color: #fff !important;
    border: 1px solid #146c43 !important;
}

/* Error notification styling */
.notification.alert-danger {
    background: #dc3545 !important;
    color: #fff !important;
    border: 1px solid #b02a37 !important;
}

/* Warning notification styling */
.notification.alert-warning {
    background: #ffc107 !important;
    color: #000 !important;
    border: 1px solid #b45309 !important;
}

/* Info notification styling */
.notification.alert-info {
    background: #0dcaf0 !important;
    color: #000 !important;
    border: 1px solid #0aa2c0 !important;
}

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

/* File upload */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    transition: border-color 0.2s ease-in-out;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background-color: rgba(0, 123, 255, 0.1);
}

/* Hint system */
.hint-item {
    background-color: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--warning-color);
    border-radius: 0.375rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.hint-item.purchased {
    background-color: rgba(25, 135, 84, 0.1);
    border-color: var(--success-color);
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn {
        font-size: 0.875rem;
        padding: 0.375rem 0.75rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
}

@media (max-width: 576px) {
    .challenge-card .card-body {
        padding: 1rem;
    }
    
    .challenge-card .card-footer {
        padding: 0.75rem 1rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
    }
    
    .modal-dialog {
        margin: 0.5rem;
    }
}

/* Print styles */
@media print {
    .navbar,
    .btn,
    .modal,
    .dropdown-menu {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000 !important;
        box-shadow: none !important;
        break-inside: avoid;
    }
    
    .table {
        border: 1px solid #000 !important;
    }
    
    .table th,
    .table td {
        border: 1px solid #000 !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* Utility classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(135deg, var(--primary-color), var(--primary-accent)) 1;
}

.shadow-custom {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Sidebar */
.sidebar, .offcanvas, .admin-sidebar {
    background-color: var(--bg-sidebar) !important;
    color: var(--text-main) !important;
}

.sidebar .nav-link, .admin-sidebar .nav-link {
    color: var(--text-light) !important;
}

.sidebar .nav-link.active, .admin-sidebar .nav-link.active {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-accent));
    color: var(--light-color) !important;
}

/* Text styles */
.text-muted, .form-text, .small, .text-secondary {
    color: var(--text-muted) !important;
}