/* ===========================================
   VARIABLES CSS (optimisées pour 2025 : plus de granularité)
   =========================================== */
:root {
    --primary-color: #0077b6; /* Bleu principal pour l'éducation */
    --primary-dark: #005f8a;
    --secondary-color: #deb657; /* Accent doré */
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 16px; /* Plus arrondi pour 2025 */
    --box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08); /* Ombre plus douce */
    --box-shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
    --gradient-primary: linear-gradient(135deg, #0077b6, #005f8a);
    --gradient-secondary: linear-gradient(135deg, #deb657, #b5974f);
    --gradient-today: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-batches: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-sessions: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-individuals: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* Animation fluide */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --z-nav: 1000;
    --z-dropdown: 1050;
    --z-toast: 9999;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; /* Police moderne */
}

/* ===========================================
   BASE & RTL SUPPORT
   =========================================== */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

body[dir="rtl"] .button-content,
body[dir="rtl"] .quick-link {
    flex-direction: row-reverse; /* Support RTL pour flex */
}

/* ===========================================
   DASHBOARD CONTAINER
   =========================================== */
.dashboard-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    z-index: 1;
}

/* ===========================================
   PAGE HEADER
   =========================================== */
.page-header {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--box-shadow);
    position: relative;
    z-index: 2;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.page-title {
    font-size: clamp(2rem, 4vw, 2.8rem); /* Responsive font-size */
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: flex-end; /* RTL */
}

.page-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 0;
    text-align: right; /* RTL */
}

.user-info {
    text-align: right;
    background: rgba(255, 255, 255, 0.15);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 12px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.user-info:hover {
    background: rgba(255, 255, 255, 0.2);
}

.welcome-text {
    display: block;
    font-size: 1rem;
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
}

.student-name {
    font-size: 1.3rem;
    font-weight: 600;
}

/* ===========================================
   MAIN CONTENT
   =========================================== */
.main-content {
    position: relative;
    z-index: 1;
}

/* ===========================================
   CONSTRUCTION MESSAGE
   =========================================== */
.construction-message {
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.message-card {
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--box-shadow);
    border-top: 5px solid var(--secondary-color);
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.message-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-hover);
}

.message-icon {
    font-size: 4.5rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-lg);
    animation: pulse 2s infinite;
}

.message-title {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.message-text {
    font-size: 1.2rem;
    color: #666;
    line-height: 1.7;
    max-width: 700px;
    margin: 0 auto;
}

/* ===========================================
   NAVIGATION BUTTONS
   =========================================== */
.navigation-buttons {
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.nav-button {
    display: block;
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-decoration: none;
    color: inherit;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
    height: 160px;
    z-index: 1;
    display: flex;
    align-items: center;
}

.nav-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: -1;
}

.nav-button:hover {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow-hover);
    text-decoration: none;
    color: inherit;
    z-index: 2;
}

.nav-button:hover::before {
    opacity: 0.05;
}

.today-lessons { background: var(--gradient-today); color: white; }
.batches-list { background: var(--gradient-batches); color: white; }
.sessions-list { background: var(--gradient-sessions); color: white; }
.individuals-list { background: var(--gradient-individuals); color: white; }

.button-content {
    display: flex;
    align-items: center;
    height: 100%;
    gap: var(--spacing-lg);
    width: 100%;
}

.button-icon {
    font-size: 3.5rem;
    opacity: 0.95;
    min-width: 90px;
    transition: var(--transition);
}

.nav-button:hover .button-icon {
    transform: scale(1.1);
}

.button-text h3 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.button-text p {
    font-size: 1.1rem;
    opacity: 0.85;
    margin-bottom: 0;
}

.button-arrow {
    margin-left: auto;
    font-size: 1.6rem;
    opacity: 0.7;
    transition: var(--transition);
}

.nav-button:hover .button-arrow {
    transform: translateX(-8px);
}

.button-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(15px);
    border-radius: 14px;
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    min-width: 70px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.button-badge span {
    display: block;
    font-size: 1.3rem;
    font-weight: 700;
}

.button-badge small {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ===========================================
   FORMATIONS SECTION
   =========================================== */
.formations-section {
    margin-top: var(--spacing-xl);
}

.formation-card {
    border: none;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.formation-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--box-shadow-hover);
}

.card-header {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-bottom: 1px solid #dee2e6;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.badge {
    float: none; /* Pas de float en RTL */
    font-size: 0.9rem;
}

.formation-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid #eee;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    transition: var(--transition);
}

.formation-item:hover {
    background: #f8f9fa;
}

.formation-item:last-child {
    border-bottom: none;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #e9ecef;
    border-radius: 3px;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.progress-fill {
    height: 100%;
    background: var(--success-color);
    border-radius: 3px;
    transition: width 0.5s ease;
}

.progress-text {
    text-align: right;
    color: var(--success-color);
    font-size: 0.9rem;
}

/* ===========================================
   EMPTY STATE
   =========================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: #6c757d;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ===========================================
   QUICK LINKS
   =========================================== */
.quick-links {
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.section-title {
    font-size: 1.7rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background: white;
    padding: var(--spacing-lg);
    border-radius: 14px;
    text-decoration: none;
    color: var(--dark-color);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 1;
}

.quick-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-hover);
    color: var(--primary-color);
    text-decoration: none;
    z-index: 2;
}

.quick-link i {
    font-size: 1.7rem;
    color: var(--primary-color);
    min-width: 35px;
    transition: var(--transition);
}

.quick-link:hover i {
    transform: scale(1.2);
}

.quick-link span {
    font-weight: 500;
    font-size: 1.1rem;
}

/* ===========================================
   Z-INDEX & NAVIGATION
   =========================================== */
.navbar,
.navbar-nav,
.dropdown-menu,
select,
.form-select {
    position: relative;
    z-index: var(--z-nav) !important;
}

.dropdown-menu {
    z-index: var(--z-dropdown) !important;
}

.welcome-toast {
    z-index: var(--z-toast) !important;
}

/* ===========================================
   ANIMATIONS
   =========================================== */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

/* ===========================================
   RESPONSIVE DESIGN (optimisé avec clamp et media queries fluides)
   =========================================== */
@media (max-width: 768px) {
    .page-header { padding: clamp(1.5rem, 5vw, var(--spacing-xl)) 0; }
    .page-title { font-size: clamp(1.8rem, 5vw, 2.2rem); justify-content: center; }
    .user-info { margin-top: var(--spacing-md); text-align: center; padding: var(--spacing-md); }
    .message-card { padding: clamp(1.5rem, 4vw, var(--spacing-xl)); }
    .message-title { font-size: clamp(1.5rem, 4vw, 1.8rem); }
    .nav-button { height: auto; min-height: 140px; padding: clamp(1rem, 3vw, var(--spacing-lg)); }
    .button-content { flex-direction: column; text-align: center; gap: var(--spacing-md); }
    .button-arrow { margin: 0; order: -1; }
    .button-badge { position: static; margin-top: var(--spacing-sm); display: inline-block; }
    .quick-link { justify-content: center; text-align: center; flex-direction: column; gap: var(--spacing-sm); }
    .card-header { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
    .formations-section .row { flex-direction: column; }
}

@media (max-width: 576px) {
    .container { padding: 0 clamp(0.75rem, 2vw, 1rem); }
    .message-icon { font-size: clamp(3rem, 6vw, 3.5rem); }
    .button-icon { font-size: clamp(2.5rem, 6vw, 3rem); }
    .button-text h3 { font-size: clamp(1.2rem, 3vw, 1.4rem); }
    .section-title { font-size: clamp(1.4rem, 3vw, 1.7rem); }
}