/* styles/pages/professeurs.css */
:root {
    --professor-primary: #1a3c40;
    --professor-secondary: #2d5d63;
    --professor-accent: #38a3a5;
    --professor-light: #f8f9fa;
    --professor-text: #333333;
    --professor-text-light: #666666;
    --professor-border: #e9ecef;
    --professor-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --professor-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    --professor-gradient: linear-gradient(135deg, var(--professor-primary), var(--professor-secondary));
    --professor-gradient-light: linear-gradient(135deg, rgba(26, 60, 64, 0.1), rgba(45, 93, 99, 0.1));
    --professor-radius: 12px;
    --professor-radius-sm: 8px;
    --professor-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   STRUCTURE GÉNÉRALE
   ============================================ */

.professors-page {
    background: var(--professor-light);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   HEADER DE LA PAGE
   ============================================ */

.page-header {
    text-align: center;
    padding: 80px 20px 60px;
    background: var(--professor-gradient);
    color: white;
    position: relative;
    overflow: hidden;
    margin-bottom: 60px;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(56, 163, 165, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(45, 93, 99, 0.3) 0%, transparent 50%);
}

.page-header h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    position: relative;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.page-header p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 30px;
    opacity: 0.9;
    line-height: 1.6;
    position: relative;
}

.page-header .btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--professor-transition);
    position: relative;
}

.page-header .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* ============================================
   LISTE DES PROFESSEURS
   ============================================ */

.professors-grid {
    padding: 0 20px 80px;
}

.grid-header {
    text-align: center;
    margin-bottom: 60px;
}

.grid-header h2 {
    font-size: 2.5rem;
    color: var(--professor-primary);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.grid-header h2 i {
    color: var(--professor-accent);
    font-size: 2.2rem;
}

.professor-count {
    display: inline-block;
    background: var(--professor-accent);
    color: white;
    padding: 8px 24px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: var(--professor-shadow);
}

/* ============================================
   CARTES DES PROFESSEURS
   ============================================ */

.professor-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.professor-card {
    background: white;
    border-radius: var(--professor-radius);
    overflow: hidden;
    box-shadow: var(--professor-shadow);
    transition: var(--professor-transition);
    position: relative;
    border: 1px solid var(--professor-border);
}

.professor-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--professor-shadow-hover);
    border-color: var(--professor-accent);
}

/* Header de la carte */
.card-header {
    padding: 25px 25px 20px;
    background: var(--professor-gradient);
    position: relative;
    color: white;
}

.card-header::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--professor-gradient);
    border-radius: 50%;
    z-index: 1;
}

.card-header::before {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    background: white;
    border-radius: 50%;
    z-index: 2;
}

.card-photo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    margin: 0 auto 20px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
    position: relative;
    z-index: 3;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.card-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 3.5rem;
}

.card-stats {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-top: 15px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 6px 12px;
    border-radius: 20px;
    -webkit-backdrop-filter: blur();
    backdrop-filter: blur(10px);
}

.stat-item i {
    font-size: 1rem;
}

/* Corps de la carte */
.card-body {
    padding: 40px 25px 25px;
    position: relative;
    z-index: 2;
    background: white;
}

.card-body h4 {
    margin: 0 0 8px;
    color: var(--professor-primary);
    font-size: 1.4rem;
    font-weight: 700;
    text-align: center;
}

.card-title {
    color: var(--professor-accent);
    font-weight: 600;
    margin-bottom: 20px;
    text-align: center;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-university {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--professor-text);
    margin-bottom: 20px;
    padding: 12px;
    background: var(--professor-light);
    border-radius: var(--professor-radius-sm);
    font-size: 0.95rem;
}

.card-university i {
    color: var(--professor-accent);
}

.card-specialites {
    margin-bottom: 20px;
    padding: 15px;
    background: var(--professor-gradient-light);
    border-radius: var(--professor-radius-sm);
    border-left: 4px solid var(--professor-accent);
}

.card-specialites i {
    float: left;
    color: var(--professor-accent);
    margin-right: 10px;
    margin-top: 2px;
}

.specialites-preview {
    color: var(--professor-text-light);
    font-size: 0.95rem;
    line-height: 1.5;
    display: block;
    overflow: hidden;
}

.card-bio-preview {
    color: var(--professor-text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--professor-border);
}

/* Footer de la carte */
.card-footer {
    padding: 20px 25px 25px;
    border-top: 1px solid var(--professor-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--professor-accent);
    color: var(--professor-accent);
    padding: 10px 22px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--professor-transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-outline:hover {
    background: var(--professor-accent);
    color: white;
    transform: translateY(-2px);
}

.card-social {
    display: flex;
    gap: 12px;
}

.card-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--professor-light);
    color: var(--professor-text-light);
    border-radius: 50%;
    font-size: 1.1rem;
    transition: var(--professor-transition);
}

.card-social a:hover {
    background: var(--professor-accent);
    color: white;
    transform: translateY(-3px);
}

/* ============================================
   SECTION "REJOIGNEZ NOTRE ÉQUIPE"
   ============================================ */

.join-team {
    text-align: center;
    padding: 60px 40px;
    background: var(--professor-gradient);
    color: white;
    border-radius: var(--professor-radius);
    position: relative;
    overflow: hidden;
    margin: 60px 0;
}

.join-team::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
}

.join-team h3 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.join-team p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
    line-height: 1.6;
    position: relative;
}

.join-team .btn-primary {
    background: white;
    color: var(--professor-primary);
    padding: 15px 35px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    position: relative;
    transition: var(--professor-transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.join-team .btn-primary:hover {
    background: var(--professor-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* ============================================
   PAGE DE DÉTAIL DU PROFESSEUR
   ============================================ */

.professor-profile {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header du profil */
.profile-header {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 50px;
    margin-bottom: 60px;
    background: white;
    padding: 40px;
    border-radius: var(--professor-radius);
    box-shadow: var(--professor-shadow);
    position: relative;
    overflow: hidden;
}

.profile-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--professor-gradient);
}

.profile-photo {
    position: relative;
}

.profile-photo img {
    width: 100%;
    height: auto;
    border-radius: var(--professor-radius);
    box-shadow: var(--professor-shadow);
}

.profile-photo .photo-placeholder {
    width: 300px;
    height: 300px;
    border-radius: var(--professor-radius);
    background: var(--professor-gradient-light);
    color: var(--professor-text-light);
    font-size: 5rem;
}

.profile-info h2 {
    font-size: 2.5rem;
    color: var(--professor-primary);
    margin-bottom: 10px;
    line-height: 1.2;
}

.profile-info .title {
    color: var(--professor-accent);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 30px;
    display: inline-block;
    padding: 8px 20px;
    background: var(--professor-gradient-light);
    border-radius: 50px;
}

.specialites, .universities, .bio-preview {
    margin-bottom: 30px;
}

.specialites h3, .universities h3, .bio-preview h3 {
    font-size: 1.3rem;
    color: var(--professor-primary);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.specialites h3 i, .universities h3 i, .bio-preview h3 i {
    color: var(--professor-accent);
}

.university-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.university-badge {
    background: var(--professor-light);
    color: var(--professor-text);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.95rem;
    border: 2px solid transparent;
    transition: var(--professor-transition);
}

.university-badge:hover {
    border-color: var(--professor-accent);
    transform: translateY(-2px);
}

.bio-preview p {
    color: var(--professor-text-light);
    line-height: 1.7;
    font-size: 1.05rem;
}

/* Sections académiques */
.profile-content {
    background: white;
    padding: 40px;
    border-radius: var(--professor-radius);
    box-shadow: var(--professor-shadow);
}

.academic-section {
    margin-bottom: 50px;
}

.academic-section:last-child {
    margin-bottom: 0;
}

.academic-section h3 {
    font-size: 1.8rem;
    color: var(--professor-primary);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--professor-light);
    display: flex;
    align-items: center;
    gap: 12px;
}

.academic-section h3 i {
    color: var(--professor-accent);
    font-size: 1.6rem;
}

/* Timeline des diplômes */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--professor-gradient);
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
    padding: 25px;
    background: var(--professor-light);
    border-radius: var(--professor-radius-sm);
    border-left: 4px solid var(--professor-accent);
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
    transition: var(--professor-transition);
}

.timeline-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.timeline-year {
    position: absolute;
    left: -40px;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: var(--professor-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.timeline-content h4 {
    font-size: 1.3rem;
    color: var(--professor-primary);
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--professor-text-light);
    margin-bottom: 5px;
    font-size: 1rem;
}

.honor {
    color: var(--professor-accent) !important;
    font-weight: 600;
    font-style: italic;
    margin-top: 10px !important;
    padding-top: 10px;
    border-top: 1px dashed var(--professor-border);
}

/* Liste des expériences */
.experience-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.experience-item {
    padding: 25px;
    background: var(--professor-light);
    border-radius: var(--professor-radius-sm);
    border-left: 4px solid var(--professor-secondary);
    position: relative;
    transition: var(--professor-transition);
}

.experience-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.experience-item h4 {
    font-size: 1.3rem;
    color: var(--professor-primary);
    margin-bottom: 10px;
}

.experience-institution {
    color: var(--professor-secondary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.experience-period {
    color: var(--professor-accent);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 15px;
    display: inline-block;
    padding: 5px 12px;
    background: rgba(56, 163, 165, 0.1);
    border-radius: 20px;
}

.experience-description {
    color: var(--professor-text-light);
    line-height: 1.7;
    padding-top: 15px;
    border-top: 1px solid var(--professor-border);
    margin-top: 15px;
}

/* Biographie complète */
.bio-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--professor-text);
    padding: 30px;
    background: var(--professor-light);
    border-radius: var(--professor-radius-sm);
    border: 1px solid var(--professor-border);
}

/* Liens de contact */
.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--professor-gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--professor-transition);
    box-shadow: 0 4px 15px rgba(26, 60, 64, 0.2);
}

.contact-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26, 60, 64, 0.3);
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 25px;
    background: white;
    border: 2px solid var(--professor-border);
    border-radius: var(--professor-radius-sm);
    color: var(--professor-text);
    transition: var(--professor-transition);
    width: 100%;
    margin-top: 10px;
}

.contact-info:hover {
    border-color: var(--professor-accent);
    transform: translateX(5px);
}

.contact-info i {
    color: var(--professor-accent);
    font-size: 1.2rem;
    min-width: 24px;
}

/* ============================================
   ÉTATS ET MESSAGES
   ============================================ */

.no-professors {
    text-align: center;
    padding: 80px 40px;
    background: white;
    border-radius: var(--professor-radius);
    box-shadow: var(--professor-shadow);
    margin: 40px 0;
}

.no-professors i {
    font-size: 5rem;
    color: var(--professor-light);
    margin-bottom: 30px;
    display: block;
}

.no-professors h3 {
    font-size: 2rem;
    color: var(--professor-primary);
    margin-bottom: 20px;
}

.no-professors p {
    font-size: 1.2rem;
    color: var(--professor-text-light);
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.no-professors .btn-primary {
    background: var(--professor-gradient);
    color: white;
    padding: 15px 35px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--professor-transition);
    border: none;
}

.no-professors .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(26, 60, 64, 0.3);
}

.alert {
    padding: 20px 25px;
    border-radius: var(--professor-radius-sm);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    animation: slideDown 0.5s ease;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    border: 2px solid #b1d8b7;
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    border: 2px solid #f1b0b7;
    color: #721c24;
}

.alert i {
    font-size: 1.5rem;
}

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

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

@media (max-width: 1200px) {
    .professor-cards {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

@media (max-width: 992px) {
    .page-header h1 {
        font-size: 2.8rem;
    }
    
    .profile-header {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .profile-photo {
        max-width: 300px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 60px 20px 40px;
    }
    
    .page-header h1 {
        font-size: 2.2rem;
    }
    
    .page-header p {
        font-size: 1.1rem;
    }
    
    .professor-cards {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .card-header {
        padding: 20px;
    }
    
    .card-photo {
        width: 120px;
        height: 120px;
    }
    
    .card-stats {
        gap: 15px;
    }
    
    .grid-header h2 {
        font-size: 2rem;
    }
    
    .join-team {
        padding: 40px 20px;
    }
    
    .join-team h3 {
        font-size: 1.8rem;
    }
    
    .profile-header,
    .profile-content {
        padding: 25px;
    }
    
    .academic-section h3 {
        font-size: 1.5rem;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-year {
        width: 50px;
        height: 50px;
        left: -30px;
        font-size: 0.9rem;
    }
    
    .contact-links {
        flex-direction: column;
    }
    
    .contact-link,
    .contact-info {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .page-header h1 {
        font-size: 1.8rem;
    }
    
    .grid-header h2 {
        font-size: 1.6rem;
    }
    
    .professor-count {
        font-size: 1rem;
        padding: 6px 20px;
    }
    
    .card-body,
    .card-footer {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    .card-footer {
        flex-direction: column;
        gap: 15px;
    }
    
    .timeline-item {
        padding: 20px;
    }
    
    .experience-item {
        padding: 20px;
    }
}

/* ============================================
   ANIMATIONS ET EFFETS SPÉCIAUX
   ============================================ */

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

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

.floating {
    animation: floating 3s ease-in-out infinite;
}

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

.glow {
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 10px rgba(56, 163, 165, 0.5);
    }
    to {
        box-shadow: 0 0 20px rgba(56, 163, 165, 0.8);
    }
}

/* ============================================
   BOUTONS PERSONNALISÉS
   ============================================ */

.btn-primary {
    background: var(--professor-gradient);
    color: white;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--professor-transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26, 60, 64, 0.3);
}

/* ============================================
   UTILITAIRES
   ============================================ */

.text-center {
    text-align: center;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-30 {
    margin-bottom: 30px;
}

.mb-40 {
    margin-bottom: 40px;
}

.mt-40 {
    margin-top: 40px;
}

.mt-60 {
    margin-top: 60px;
}

.p-20 {
    padding: 20px;
}

.p-30 {
    padding: 30px;
}

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

.bg-white {
    background: white;
}

.rounded {
    border-radius: var(--professor-radius);
}

.shadow {
    box-shadow: var(--professor-shadow);
}

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

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--professor-light);
}

::-webkit-scrollbar-thumb {
    background: var(--professor-gradient);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--professor-secondary);
}