/* Variables CSS avec la palette fournie */
:root {
    --bleu-nuit: #1a237e;
    --rouge-nuit: #b71c1c;
    --blanc: #ffffff;
    --gris-clair: #f5f5f5;
    --gris-fonce: #424242;
    --bleu-clair: #3f51b5;
    --rouge-clair: #e53935;
    --bleu-gradient: linear-gradient(135deg, #1a237e 0%, #283593 100%);
    --rouge-gradient: linear-gradient(135deg, #b71c1c 0%, #c62828 100%);
    --shadow: 0 10px 30px rgba(0,0,0,0.1);
    --shadow-hover: 0 15px 40px rgba(0,0,0,0.15);
    --black: #020205;
    --animation: slideUp 1s ease;
}

/* Animation d'apparition */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Bannière Contact */
.contact-banner {
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.9) 0%, rgba(183, 28, 28, 0.8) 100%), 
                url('../media/slide2.png') center/cover;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    color: var(--blanc);
    padding: 100px 0;
    text-align: center;
    position: relative;
    animation: var(--animation);
}

.contact-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 35, 126, 0.1);
    z-index: 1;
}

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

.contact-banner h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.contact-banner p {
    font-size: 1.3rem;
    opacity: 0.95;
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto;
}

/* Section Contact Principale */
.contact-main {
    padding: 80px 0;
    background: var(--gris-clair);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

/* Formulaire de Contact */
.contact-form-section {
    background: var(--blanc);
    padding: 50px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    animation: var(--animation);
}

.contact-form-section h2 {
    color: var(--bleu-nuit);
    margin-bottom: 15px;
    font-size: 2.2rem;
    font-weight: 600;
}

.form-description {
    color: var(--gris-fonce);
    margin-bottom: 40px;
    font-size: 1.1rem;
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: var(--bleu-nuit);
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 1.1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--blanc);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--bleu-clair);
    box-shadow: 0 0 0 3px rgba(63, 81, 181, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
    font-family: inherit;
}

.error-message {
    color: var(--rouge-nuit);
    font-size: 0.9rem;
    margin-top: 5px;
    min-height: 20px;
}

.submit-btn {
    background: var(--bleu-gradient);
    color: var(--blanc);
    border: none;
    padding: 18px 40px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-top: 10px;
}

.submit-btn:hover {
    background: var(--rouge-gradient);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.submit-btn:active {
    transform: translateY(0);
}

.btn-loading {
    display: none;
}

.submit-btn.loading .btn-text {
    display: none;
}

.submit-btn.loading .btn-loading {
    display: block;
}

/* Informations de Contact */
.contact-info-section {
    animation: var(--animation);
}

.contact-info-section h2 {
    color: var(--bleu-nuit);
    margin-bottom: 40px;
    font-size: 2.2rem;
    font-weight: 600;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 50px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: var(--blanc);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-hover);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--bleu-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blanc);
    font-size: 1.5rem;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.contact-item:hover .contact-icon {
    background: var(--rouge-gradient);
    transform: rotate(15deg) scale(1.1);
}

.contact-details h3 {
    color: var(--bleu-nuit);
    margin-bottom: 8px;
    font-size: 1.3rem;
    font-weight: 600;
}

.contact-details p {
    color: var(--gris-fonce);
    line-height: 1.6;
    margin-bottom: 5px;
}

/* Réseaux Sociaux */
.social-contact h3 {
    color: var(--bleu-nuit);
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 600;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blanc);
    font-size: 1.2rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-link.facebook {
    background: #3b5998;
}

.social-link.instagram {
    background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d);
}

.social-link.linkedin {
    background: #0077b5;
}

.social-link.twitter {
    background: #1da1f2;
}

.social-link:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-hover);
}

/* Section Localisation */
.location-section {
    padding: 80px 0;
    background: var(--blanc);
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--bleu-nuit);
    margin-bottom: 15px;
    position: relative;
    font-weight: 700;
}

.divider {
    width: 80px;
    height: 4px;
    background: var(--rouge-gradient);
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--gris-fonce);
    max-width: 600px;
    margin: 0 auto;
}

.location-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.map-container {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    animation: var(--animation);
}

.location-info {
    animation: var(--animation);
}

.location-info h3 {
    color: var(--bleu-nuit);
    margin-bottom: 30px;
    font-size: 1.8rem;
    font-weight: 600;
}

.access-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.access-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--gris-clair);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.access-item:hover {
    background: var(--bleu-clair);
    color: var(--blanc);
    transform: translateX(5px);
}

.access-item:hover h4,
.access-item:hover p {
    color: var(--blanc);
}

.access-item i {
    font-size: 1.5rem;
    color: var(--bleu-nuit);
    width: 40px;
    text-align: center;
}

.access-item:hover i {
    color: var(--blanc);
}

.access-item h4 {
    color: var(--bleu-nuit);
    margin-bottom: 5px;
    font-size: 1.1rem;
    font-weight: 600;
}

.access-item p {
    color: var(--gris-fonce);
    font-size: 0.95rem;
}

.campus-info h4 {
    color: var(--bleu-nuit);
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: 600;
}

.campus-info ul {
    list-style: none;
    padding: 0;
}

.campus-info li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--gris-fonce);
}

.campus-info li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--rouge-nuit);
    font-weight: bold;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .contact-grid {
        gap: 40px;
    }
    
    .location-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .contact-banner {
        padding: 80px 0;
    }
    
    .contact-banner h1 {
        font-size: 2.5rem;
    }
    
    .contact-banner p {
        font-size: 1.1rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form-section {
        padding: 30px;
    }
    
    .contact-item {
        padding: 20px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .contact-banner h1 {
        font-size: 2rem;
    }
    
    .contact-form-section {
        padding: 20px;
    }
    
    .contact-form-section h2,
    .contact-info-section h2 {
        font-size: 1.8rem;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .access-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
}