/* ============================================
   THEME SYSTEM - Light & Dark Mode
   ============================================ */

/* ========== Light Mode (Default) ========== */
:root {
    /* Gradients et Fonds */
    --bg-body: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: #ffffff;
    --bg-light: #f8f9fa;
    --bg-border: #e9ecef;

    /* Texte */
    --text-primary: #333333;
    --text-secondary: #495057;
    --text-muted: #666666;

    /* Inputs */
    --input-bg: #ffffff;
    --input-border: #e9ecef;
    --input-border-focus: #667eea;
    --input-text: #333333;
    --input-placeholder: #999999;

    /* Boutons */
    --btn-primary-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --btn-primary-shadow: rgba(102, 126, 234, 0.4);
    --btn-secondary-bg: #6c757d;
    --btn-secondary-hover: #5a6268;
    --btn-danger-bg: #dc3545;
    --btn-danger-hover: #c82333;

    /* Tableaux */
    --table-header-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --table-header-text: #ffffff;
    --table-row-hover: #f8f9fa;
    --table-border: #e9ecef;

    /* Alerts */
    --alert-success-bg: #d4edda;
    --alert-success-text: #155724;
    --alert-success-border: #c3e6cb;
    --alert-error-bg: #f8d7da;
    --alert-error-text: #721c24;
    --alert-error-border: #f5c6cb;
    --alert-warning-bg: #fff3cd;
    --alert-warning-text: #856404;
    --alert-warning-border: #ffeaa7;
    --alert-info-bg: #d1ecf1;
    --alert-info-text: #0c5460;
    --alert-info-border: #bee5eb;

    /* Ombres */
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    --card-shadow-deep: 0 20px 60px rgba(0, 0, 0, 0.3);
    --btn-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);

    /* Menu */
    --menu-bg: #ffffff;
    --menu-link-color: #495057;
    --menu-link-hover-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --menu-separator: #e9ecef;

    /* Toggle */
    --toggle-bg: #e9ecef;
    --toggle-slider: #ffffff;

    /* Status Indicators */
    --status-active-bg: #28a745;
    --status-active-shadow: rgba(40, 167, 69, 0.5);
    --status-inactive-bg: #dc3545;
    --status-inactive-shadow: rgba(220, 53, 69, 0.5);
}

/* ========== Dark Mode ========== */
[data-theme="dark"] {
    /* Gradients et Fonds */
    --bg-body: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --card-bg: #2d2d44;
    --bg-light: #1f1f35;
    --bg-border: #3f3f55;

    /* Texte */
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    /* Inputs */
    --input-bg: #1f1f35;
    --input-border: #3f3f55;
    --input-border-focus: #818cf8;
    --input-text: #e4e4e7;
    --input-placeholder: #71717a;

    /* Boutons */
    --btn-primary-bg: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
    --btn-primary-shadow: rgba(129, 140, 248, 0.4);
    --btn-secondary-bg: #4b5563;
    --btn-secondary-hover: #374151;
    --btn-danger-bg: #ef4444;
    --btn-danger-hover: #dc2626;

    /* Tableaux */
    --table-header-bg: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
    --table-header-text: #ffffff;
    --table-row-hover: #1f1f35;
    --table-border: #3f3f55;

    /* Alerts */
    --alert-success-bg: #1f3a2e;
    --alert-success-text: #86efac;
    --alert-success-border: #2d5a3f;
    --alert-error-bg: #3a1f1f;
    --alert-error-text: #fca5a5;
    --alert-error-border: #5a2d2d;
    --alert-warning-bg: #3a331f;
    --alert-warning-text: #fde047;
    --alert-warning-border: #5a4d2d;
    --alert-info-bg: #1f2e3a;
    --alert-info-text: #7dd3fc;
    --alert-info-border: #2d4455;

    /* Ombres */
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    --card-shadow-deep: 0 20px 60px rgba(0, 0, 0, 0.8);
    --btn-shadow: 0 5px 15px rgba(129, 140, 248, 0.4);

    /* Menu */
    --menu-bg: #2d2d44;
    --menu-link-color: #a1a1aa;
    --menu-link-hover-bg: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
    --menu-separator: #3f3f55;

    /* Toggle */
    --toggle-bg: #3f3f55;
    --toggle-slider: #818cf8;

    /* Status Indicators */
    --status-active-bg: #22c55e;
    --status-active-shadow: rgba(34, 197, 94, 0.5);
    --status-inactive-bg: #ef4444;
    --status-inactive-shadow: rgba(239, 68, 68, 0.5);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-body);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-primary);
}

.main-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ============================================
   CARDS
   ============================================ */

.card,
.header-card,
.content-card,
.form-card,
.table-card,
.info-card,
.welcome-card,
.login-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--card-shadow);
    margin-bottom: 30px;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
}

p {
    color: var(--text-secondary);
}

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

.text-success {
    color: var(--alert-success-text) !important;
}

.text-danger {
    color: var(--alert-error-text) !important;
}

/* ============================================
   FORMS
   ============================================ */

.form-control,
.form-select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="url"],
input[type="date"],
input[type="time"],
select,
textarea {
    background: var(--input-bg) !important;
    color: var(--input-text) !important;
    border: 2px solid var(--input-border) !important;
    border-radius: 8px;
    padding: 12px 15px;
}

.form-control::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--input-placeholder) !important;
}

.form-control:focus,
.form-select:focus,
input:focus,
select:focus,
textarea:focus {
    border-color: var(--input-border-focus) !important;
    box-shadow: 0 0 0 0.2rem var(--btn-primary-shadow) !important;
    outline: none;
}

.form-label,
label {
    color: var(--text-primary);
    font-weight: 600;
}

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

.btn-primary,
.btn.btn-primary,
button.btn-primary {
    background: var(--btn-primary-bg) !important;
    color: white !important;
    border: none;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--btn-primary-shadow);
}

.btn-secondary,
.btn.btn-secondary {
    background: var(--btn-secondary-bg) !important;
    color: white !important;
    border: none;
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover) !important;
    transform: translateY(-2px);
}

.btn-danger,
.btn.btn-danger {
    background: var(--btn-danger-bg) !important;
    color: white !important;
}

.btn-danger:hover {
    background: var(--btn-danger-hover) !important;
    transform: translateY(-2px);
}

.btn-outline-primary {
    background: transparent !important;
    border: 2px solid var(--input-border-focus) !important;
    color: var(--input-border-focus) !important;
}

.btn-outline-primary:hover {
    background: var(--input-border-focus) !important;
    color: white !important;
}

/* ============================================
   TABLES
   ============================================ */

.modern-table,
.table {
    width: 100%;
    background: var(--card-bg);
    border-collapse: collapse;
}

.modern-table thead,
.table thead {
    background: var(--table-header-bg);
    color: var(--table-header-text);
}

.modern-table th,
.table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--table-header-text);
}

.modern-table td,
.table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--table-border);
    color: var(--text-secondary);
}

.modern-table tbody tr:hover,
.table tbody tr:hover {
    background: var(--table-row-hover);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease-out;
}

.alert-success,
.status-alert.active {
    background: var(--alert-success-bg) !important;
    color: var(--alert-success-text) !important;
    border: 1px solid var(--alert-success-border) !important;
}

.alert-error,
.alert-danger {
    background: var(--alert-error-bg) !important;
    color: var(--alert-error-text) !important;
    border: 1px solid var(--alert-error-border) !important;
}

.alert-warning,
.status-alert.inactive {
    background: var(--alert-warning-bg) !important;
    color: var(--alert-warning-text) !important;
    border: 1px solid var(--alert-warning-border) !important;
}

.alert-info {
    background: var(--alert-info-bg) !important;
    color: var(--alert-info-text) !important;
    border: 1px solid var(--alert-info-border) !important;
}

/* ============================================
   STATUS INDICATORS
   ============================================ */

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
}

.status-active {
    background-color: var(--status-active-bg);
    box-shadow: 0 0 8px var(--status-active-shadow);
}

.status-inactive {
    background-color: var(--status-inactive-bg);
    box-shadow: 0 0 8px var(--status-inactive-shadow);
}

/* ============================================
   DARK MODE TOGGLE
   ============================================ */

.theme-toggle {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.theme-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--toggle-bg);
    transition: 0.4s;
    border-radius: 30px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: var(--toggle-slider);
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .toggle-slider:before {
    transform: translateX(30px);
}

.theme-icon {
    font-size: 20px;
}

/* ============================================
   MENU STYLES
   ============================================ */

.modern-nav,
.modern-menu {
    background: var(--menu-bg);
    border-radius: 10px;
    padding: 15px 25px;
    margin-bottom: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 15px;
}

.modern-nav a,
.modern-menu a,
.menu-link {
    text-decoration: none;
    color: var(--menu-link-color) !important;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
}

.modern-nav a:hover,
.modern-menu a:hover,
.menu-link:hover {
    background: var(--menu-link-hover-bg);
    color: white !important;
    transform: translateY(-2px);
    box-shadow: 0 3px 10px var(--btn-primary-shadow);
}

.modern-nav .nav-separator,
.modern-menu .nav-separator {
    width: 1px;
    height: 24px;
    background: var(--menu-separator);
    margin: 0 5px;
}

.modern-nav .logout-link,
.modern-menu .logout-link {
    margin-left: auto;
    background: var(--btn-danger-bg);
    color: white !important;
}

.modern-nav .logout-link:hover,
.modern-menu .logout-link:hover {
    background: var(--btn-danger-hover);
    color: white !important;
    box-shadow: 0 3px 10px rgba(220, 53, 69, 0.4);
}

.menu-theme-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

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

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .card,
    .header-card,
    .content-card,
    .form-card,
    .table-card,
    .welcome-card {
        padding: 20px;
    }

    .modern-nav,
    .modern-menu {
        padding: 12px 15px;
        gap: 10px;
        justify-content: center;
    }

    .modern-nav a,
    .modern-menu a,
    .menu-link {
        font-size: 13px;
        padding: 6px 12px;
    }

    .modern-nav .nav-separator,
    .modern-menu .nav-separator {
        display: none;
    }

    .modern-nav .logout-link,
    .modern-menu .logout-link,
    .menu-theme-toggle {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.border {
    border-color: var(--bg-border) !important;
}

.shadow {
    box-shadow: var(--card-shadow) !important;
}

.shadow-deep {
    box-shadow: var(--card-shadow-deep) !important;
}