/* ===== SECTIONS MODERNES UX PROFESSIONNEL ===== */

/* Variables CSS pour cohérence */
:root {
    --section-padding: 6rem 2rem;
    --section-max-width: 1200px;
    --card-border-radius: 20px;
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    --card-shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    --gradient-secondary: linear-gradient(135deg, #0a1c3a 0%, #1e3a5f 100%);
    --text-primary: #0a1c3a;
    --text-secondary: #666;
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Container principal des sections */
.section-container {
    padding: var(--section-padding);
    position: relative;
    overflow: hidden;
}

.section-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0.8;
}

/* En-tête de section */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Grille de contenu */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    max-width: var(--section-max-width);
    margin: 0 auto;
}

/* Cartes de fonctionnalités */
.feature-card {
    background: white;
    border-radius: var(--card-border-radius);
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 215, 0, 0.1);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    transition: transform 0.3s ease;
}

.feature-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #FFA500;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    position: relative;
}

.card-cta::after {
    content: '→';
    transition: transform 0.3s ease;
}

.card-cta:hover {
    color: #FFD700;
    transform: translateX(5px);
}

.card-cta:hover::after {
    transform: translateX(5px);
}

/* ===== SECTION PROGRAMME - TIMELINE ===== */
.timeline-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-time {
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    min-width: 120px;
    text-align: center;
    box-shadow: var(--card-shadow);
    position: relative;
    z-index: 2;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: var(--card-border-radius);
    box-shadow: var(--card-shadow);
    flex: 1;
    margin: 0 2rem;
    transition: var(--transition-smooth);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.timeline-content h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== SECTION ORGANISATEURS ===== */
.organizers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    max-width: var(--section-max-width);
    margin: 0 auto;
}

.organizer-card {
    background: white;
    border-radius: var(--card-border-radius);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.organizer-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(255, 215, 0, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
    animation: rotate 10s linear infinite;
}

.organizer-card:hover::before {
    opacity: 1;
}

.organizer-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--card-shadow-hover);
}

.organizer-avatar {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    padding: 1rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    position: relative;
    z-index: 2;
}

.organizer-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 2;
}

.organizer-role {
    color: #FFA500;
    font-weight: 600;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.organizer-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    position: relative;
    z-index: 2;
}

/* ===== SECTION PARTENAIRES ===== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: var(--section-max-width);
    margin: 0 auto;
}

.partner-category {
    background: white;
    border-radius: var(--card-border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
}

.partner-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

.partner-category h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.partner-logos {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.partner-logo {
    background: var(--gradient-secondary);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.partner-logo:hover {
    background: var(--gradient-primary);
    color: var(--text-primary);
    transform: scale(1.05);
}

/* ===== SECTION TOP 50 ===== */
.top50-preview {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.countdown-container {
    background: var(--gradient-secondary);
    color: white;
    padding: 3rem;
    border-radius: var(--card-border-radius);
    box-shadow: var(--card-shadow);
    margin-bottom: 2rem;
}

.countdown-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    font-weight: 600;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

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

.countdown-number {
    font-size: 3rem;
    font-weight: 700;
    display: block;
    color: #FFD700;
}

.countdown-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.countdown-separator {
    font-size: 2rem;
    font-weight: 700;
    color: #FFD700;
    align-self: center;
}

.countdown-date {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ===== ANIMATIONS ===== */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --section-padding: 4rem 1rem;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .timeline-container::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 60px;
    }
    
    .timeline-time {
        position: absolute;
        left: 0;
        min-width: auto;
        width: 60px;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.9rem;
    }
    
    .timeline-content {
        margin: 0;
    }
    
    .countdown {
        gap: 1rem;
    }
    
    .countdown-number {
        font-size: 2rem;
    }
}

/* ===== SECTION CONTACT MODERNE ===== */
.contact-wrapper {
    max-width: var(--section-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.contact-card {
    background: white;
    border-radius: var(--card-border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 215, 0, 0.1);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
}

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

.contact-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.contact-link {
    color: #FFA500;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.contact-link:hover {
    color: #FFD700;
}

.social-links {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-btn {
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.social-btn:hover {
    background: var(--gradient-secondary);
    color: white;
    transform: translateY(-2px);
}

/* Formulaire de contact moderne */
.contact-form-container {
    background: white;
    border-radius: var(--card-border-radius);
    padding: 3rem;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(255, 215, 0, 0.1);
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

.modern-contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-field {
    position: relative;
    display: flex;
    flex-direction: column;
}

.form-field input,
.form-field select,
.form-field textarea {
    background: #f8f9fa;
    border: 2px solid transparent;
    border-radius: 10px;
    padding: 1rem;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: var(--transition-smooth);
    resize: vertical;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: #FFD700;
    background: white;
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

.form-field label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--text-secondary);
    font-size: 1rem;
    transition: var(--transition-smooth);
    pointer-events: none;
    background: transparent;
    padding: 0 0.25rem;
}

.form-field input:focus + label,
.form-field input:valid + label,
.form-field select:focus + label,
.form-field select:valid + label,
.form-field textarea:focus + label,
.form-field textarea:valid + label {
    top: -0.5rem;
    left: 0.75rem;
    font-size: 0.8rem;
    color: #FFD700;
    background: white;
    font-weight: 600;
}

.form-field select {
    cursor: pointer;
}

.form-field select option {
    padding: 0.5rem;
}

.submit-btn {
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: none;
    border-radius: 50px;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

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

.btn-loader {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.submit-btn.loading .btn-loader {
    opacity: 1;
}

.submit-btn.loading span {
    opacity: 0.7;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card {
        padding: 2rem;
    }
    
    .organizer-card {
        padding: 2rem;
    }
    
    .countdown-container {
        padding: 2rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-info-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-container {
        padding: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}