/* ============================================================
   GROUPE IKI - Exam Slot Reservation System
   Design System - Dark Mode
   ============================================================ */

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

:root {
    --primary: #F04E23;
    --primary-dark: #D43D1A;
    --primary-light: #FF6B3D;
    --secondary: #243B8F;
    --secondary-dark: #1A2D6E;
    --secondary-light: #3B52A9;
    --accent: #7A1FA2;
    --accent-light: #9B3FC4;
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --white: #FFFFFF;
    --bg-dark: #111827;
    --bg-card: #1E293B;
    --bg-card-hover: #253348;
    --bg-input: #0F172A;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --border-color: rgba(255,255,255,0.08);
    --border-hover: rgba(255,255,255,0.15);
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-md: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.2);
    --shadow-xl: 0 30px 60px rgba(0,0,0,0.3);
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255,255,255,0.08);
    --glass-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 14px;
    zoom: 0.97;
}

/* ============================================================
   GLASS CARD
   ============================================================ */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
    overflow: hidden;
}

.glass-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

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

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

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.glass-card {
    animation: fadeIn 0.5s ease-out;
}

/* ============================================================
   FORM ELEMENTS
   ============================================================ */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-control, .form-select {
    background: var(--bg-input) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-sm) !important;
    color: var(--text-primary) !important;
    padding: 0.6rem 0.875rem;
    font-size: 0.8125rem;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px rgba(240, 78, 35, 0.15) !important;
    outline: none;
}

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

.form-control-lg {
    padding: 1rem 1.25rem;
    font-size: 1rem;
}

.form-check-input {
    background-color: var(--bg-input);
    border-color: var(--border-color);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-switch .form-check-input {
    width: 3em;
    height: 1.5em;
    cursor: pointer;
}

.form-switch .form-check-input:focus {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23F04E23'/%3e%3c/svg%3e");
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.8125rem;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(240, 78, 35, 0.3);
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.0625rem;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1.125rem;
    border-radius: var(--radius-md);
}

/* ============================================================
   TABLES
   ============================================================ */
.admin-table {
    margin-bottom: 0;
}

.admin-table thead th {
    background: transparent;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.admin-table tbody td {
    padding: 0.625rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid rgba(255,255,255,0.03);
    font-size: 0.8125rem;
}

.admin-table tbody tr:hover {
    background: rgba(255,255,255,0.02);
}

.admin-table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================================
   BADGES & STATUS
   ============================================================ */
.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-status.open, .badge-status.active {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.badge-status.closed, .badge-status.inactive {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.badge-status.full {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.badge-status.archived {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination-wrap {
    padding: 1rem 1.25rem;
    display: flex;
    justify-content: center;
}

.pagination {
    gap: 0.25rem;
}

.page-link {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--radius-sm) !important;
    padding: 0.5rem 0.875rem;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-card-hover);
}

/* ============================================================
   ALERTS
   ============================================================ */
.glass-alert {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.alert-success {
    border-left: 4px solid var(--success);
}

.alert-danger {
    border-left: 4px solid var(--danger);
}

.alert-warning {
    border-left: 4px solid var(--warning);
}

.alert-info {
    border-left: 4px solid var(--secondary);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    :root {
        --radius-lg: 16px;
    }
    
    .form-control-lg {
        padding: 0.75rem 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
    }
}