/* ===== VARIABLES CSS ===== */
:root {
    --primary-color: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --student-primary: #2c5aa0;
    --student-secondary: #4a90e2;
    --student-accent: #ff6b6b;
    --student-light: #e8f4f8;
    --student-dark: #1a365d;
}

/* ===== HERO SECTION ===== */
.student-hero {
    background: linear-gradient(135deg, var(--student-primary) 0%, var(--student-dark) 100%);
    padding: 80px 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.student-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../assets/images/etudiants/pattern.svg') repeat;
    opacity: 0.1;
}

.student-hero-image {
    position: relative;
    z-index: 2;
}

.student-hero .image-container {
    background: linear-gradient(45deg, var(--student-secondary), var(--student-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.student-hero .adaptive-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.student-hero .image-placeholder {
    background: linear-gradient(45deg, var(--student-secondary), var(--student-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

/* ===== NAVIGATION INTERNE ===== */
.student-nav-section {
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    background: white;
}

.student-internal-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    border-radius: 50px;
    transition: all 0.3s ease;
    background: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-item:hover {
    background: var(--student-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(44, 90, 160, 0.3);
}

.nav-item.active {
    background: var(--student-primary);
    color: white;
}

/* ===== SECTIONS GÉNÉRALES ===== */
.section-padding {
    padding: 80px 0;
}

/* ===== CARDS STAGES ===== */
.stage-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
}

.stage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.stage-header {
    background: linear-gradient(135deg, var(--student-primary), var(--student-secondary));
    color: white;
    padding: 2rem;
    text-align: center;
}

.stage-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.stage-header h4 {
    margin: 0;
    font-size: 1.25rem;
}

.stage-body {
    padding: 2rem;
}

.stage-features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.stage-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
    position: relative;
    padding-left: 1.5rem;
}

.stage-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.stage-features li:last-child {
    border-bottom: none;
}

.stage-actions {
    display: flex;
    gap: 1rem;
    justify-content: space-between;
}

/* ===== PROCESSUS DE CANDIDATURE ===== */
.application-process {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--student-primary);
    z-index: 1;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 2;
    flex: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--student-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
    border: 5px solid white;
    box-shadow: 0 0 0 2px var(--student-primary);
}

.process-step h5 {
    color: var(--student-primary);
    margin-bottom: 0.5rem;
}

/* ===== CARDS FORMATIONS ===== */
.formation-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.formation-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.formation-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.formation-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.formation-card:hover .formation-image img {
    transform: scale(1.05);
}

.formation-image .image-placeholder {
    background: linear-gradient(45deg, var(--student-secondary), var(--student-primary));
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.formation-content {
    padding: 2rem;
}

.formation-category {
    background: var(--student-light);
    color: var(--student-primary);
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.formation-content h4 {
    margin: 1rem 0;
    color: var(--student-dark);
}

.formation-meta {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.formation-meta span {
    display: flex;
    align-items: center;
    color: var(--secondary-color);
    font-size: 0.875rem;
}

/* ===== CALENDRIER FORMATIONS ===== */
.formation-calendar {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.calendar-grid {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.calendar-item {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background: var(--student-light);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.calendar-item:hover {
    background: var(--student-primary);
    color: white;
}

.calendar-item:hover .calendar-date {
    background: white;
    color: var(--student-primary);
}

.calendar-date {
    background: var(--student-primary);
    color: white;
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    min-width: 80px;
    margin-right: 1.5rem;
    transition: all 0.3s ease;
}

.calendar-date .month {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
}

.calendar-date .day {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
}

.calendar-content h5 {
    margin: 0 0 0.5rem 0;
    color: inherit;
}

.calendar-content p {
    margin: 0;
    opacity: 0.8;
}

/* ===== CARDS CONCOURS ===== */
.exam-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.exam-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.exam-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.exam-icon {
    font-size: 2rem;
    color: var(--student-primary);
}

.exam-header h4 {
    margin: 0;
    flex: 1;
}

.exam-status {
    font-size: 0.75rem;
}

.exam-details {
    margin: 1.5rem 0;
}

.exam-detail {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    color: var(--secondary-color);
}

.exam-detail i {
    width: 20px;
    margin-right: 0.5rem;
    color: var(--student-primary);
}

.exam-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===== PRÉPARATION CONCOURS ===== */
.preparation-section {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.preparation-item {
    text-align: center;
    padding: 2rem 1rem;
}

.preparation-icon {
    font-size: 3rem;
    color: var(--student-primary);
    margin-bottom: 1rem;
}

.preparation-item h5 {
    color: var(--student-dark);
    margin-bottom: 1rem;
}

/* ===== PLATEFORME PÉDAGOGIQUE ===== */
.platform-card, .tools-card, .stats-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    height: 100%;
}

.platform-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--student-light);
}

.platform-header h4 {
    margin: 0;
    color: var(--student-dark);
}

.resource-categories {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.resource-category {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--student-light);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.resource-category:hover {
    background: var(--student-primary);
    color: white;
}

.resource-category:hover .resource-icon {
    color: white;
}

.resource-icon {
    font-size: 2rem;
    color: var(--student-primary);
    min-width: 60px;
}

.resource-category h5 {
    margin: 0 0 0.5rem 0;
    color: inherit;
}

.resource-category p {
    margin: 0;
    opacity: 0.8;
}

.platform-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===== OUTILS ===== */
.tools-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--student-light);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.tool-item:hover {
    background: var(--student-primary);
    color: white;
}

.tool-item:hover .tool-icon {
    color: white;
}

.tool-icon {
    color: var(--student-primary);
    width: 20px;
}

/* ===== STATISTIQUES ===== */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--student-light);
    border-radius: 10px;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--student-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--secondary-color);
}

/* ===== TÉMOIGNAGES ===== */
.student-testimonials {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.testimonial-item {
    background: var(--student-light);
    padding: 2rem;
    border-radius: 15px;
    position: relative;
}

.testimonial-item::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-size: 3rem;
    color: var(--student-primary);
    opacity: 0.3;
    font-family: serif;
}

.testimonial-content {
    position: relative;
    z-index: 2;
}

.testimonial-content p {
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
}

.testimonial-author strong {
    color: var(--student-dark);
}

.testimonial-author span {
    color: var(--secondary-color);
    font-size: 0.875rem;
}

/* ===== CONTACT ÉTUDIANT ===== */
.student-contact {
    background: linear-gradient(135deg, var(--student-primary) 0%, var(--student-dark) 100%);
    color: white;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.contact-icon {
    font-size: 2rem;
    color: var(--student-light);
    min-width: 60px;
}

.contact-item h5 {
    margin: 0 0 0.5rem 0;
    color: white;
}

.contact-item p {
    margin: 0;
    opacity: 0.9;
}

.contact-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

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

/* Tablettes */
@media (max-width: 1024px) {
    .student-internal-nav {
        gap: 1rem;
    }
    
    .nav-item {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    .process-steps {
        flex-direction: column;
        gap: 2rem;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
}

/* Mobiles */
@media (max-width: 768px) {
    .student-hero {
        padding: 60px 0;
        text-align: center;
    }
    
    .student-hero .display-4 {
        font-size: 2rem;
    }
    
    .student-internal-nav {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .nav-item {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .section-padding {
        padding: 60px 0;
    }
    
    .stage-actions,
    .exam-actions,
    .platform-actions,
    .contact-actions {
        flex-direction: column;
    }
    
    .formation-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .calendar-item {
        flex-direction: column;
        text-align: center;
    }
    
    .calendar-date {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .resource-category {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}

/* Très petits écrans */
@media (max-width: 480px) {
    .student-hero {
        padding: 40px 0;
    }
    
    .student-hero .btn-lg {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .application-process,
    .formation-calendar,
    .preparation-section,
    .student-testimonials {
        padding: 1.5rem;
    }
    
    .platform-card,
    .tools-card,
    .stats-card,
    .exam-card {
        padding: 1.5rem;
    }
    
    .stage-body,
    .formation-content {
        padding: 1.5rem;
    }
}

/* Accessibilité */
@media (prefers-reduced-motion: reduce) {
    .stage-card,
    .formation-card,
    .exam-card,
    .nav-item,
    .calendar-item,
    .resource-category,
    .tool-item {
        transition: none;
    }
}

/* Mode sombre */
@media (prefers-color-scheme: dark) {
    .stage-card,
    .formation-card,
    .exam-card,
    .platform-card,
    .tools-card,
    .stats-card,
    .preparation-section,
    .student-testimonials {
        background: var(--dark-color);
        color: white;
    }
    
    .stage-features li {
        border-bottom-color: #444;
    }
    
    .resource-category,
    .tool-item,
    .stat-item {
        background: #2d3748;
    }
}

/* Impression */
@media print {
    .student-nav-section,
    .student-contact,
    .contact-actions,
    .chatbot-widget {
        display: none;
    }
    
    .student-hero {
        background: white !important;
        color: black !important;
        padding: 20px 0;
    }
    
    .stage-card,
    .formation-card,
    .exam-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}