:root {
    /* Palette Officielle JPR Conseil (Brand Book) */
    --obsidian-black: #0E261F;
    --caramel-brown: #C69A3F;
    --chalk-white: #F9F8F4;
    --pure-white: #FFFFFF;

    /* Aliases fonctionnels */
    --bg-light: var(--chalk-white);
    --bg-dark: var(--obsidian-black);
    --bg-card: rgba(255, 255, 255, 0.9);
    --text-main: #1D2B26;
    --text-muted: #52635D;
    --text-light: #F9F8F4;
    --primary: var(--obsidian-black);
    --primary-light: #163C31;
    --accent: var(--caramel-brown);
    --accent-light: #F4E7CE;
    --border-color: rgba(14, 38, 31, 0.12);
    --shadow: 0 10px 40px -10px rgba(14, 38, 31, 0.08);
    --radius-sm: 6px;
    --radius-md: 14px;
    --radius-lg: 28px;
    --transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 7rem 0;
}

.bg-light {
    background-color: #F2F0E8;
}

.bg-dark {
    background-color: var(--bg-dark);
}

.text-light {
    color: var(--text-light);
}

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

/* Section Headers */
.section-header {
    margin-bottom: 4.5rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

.section-tag {
    display: inline-block;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: 1rem;
}

.section-tag.gold {
    color: var(--accent);
}

.section-header h2 {
    font-size: 2.6rem;
    margin-bottom: 1.2rem;
}

.section-header.text-light h2 {
    color: #ffffff;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.section-header.text-light .section-desc {
    color: rgba(249, 248, 244, 0.75);
}

/* Grids */
.grid {
    display: grid;
    gap: 2.5rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Vidéothèque Styles */

.v-filter-btn {
    padding: 0.55rem 1.25rem;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    background-color: var(--pure-white);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    cursor: pointer;
    transition: var(--transition);
}

.v-filter-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.v-filter-btn.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(14, 38, 31, 0.15);
}

.video-card {
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--pure-white);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(14, 38, 31, 0.12);
}

.video-embed-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* Ratio 16:9 */
    background-color: var(--obsidian-black);
}

.video-embed-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-card-body {
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.video-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.video-card-body h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--primary);
}

.video-card-body p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2rem;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(14, 38, 31, 0.18);
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14, 38, 31, 0.28);
}

.btn-outline {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Header & Navigation */
.main-header {
    background-color: rgba(249, 248, 244, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-svg {
    display: block;
    height: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.main-nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.1rem;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.main-nav a:hover {
    background-color: rgba(14, 38, 31, 0.06);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.main-nav a.btn-nav,
.btn-nav {
    padding: 0.6rem 1.3rem;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    background-color: var(--accent);
    color: #ffffff !important;
    border-color: var(--accent);
}

.main-nav a.btn-nav:hover,
.btn-nav:hover {
    background-color: #B58B35;
    border-color: #B58B35;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(198, 154, 63, 0.35);
    transform: translateY(-1px);
}

/* Hero Section */
.hero-section {
    padding: 6rem 0;
    background-image: 
        radial-gradient(at 0% 0%, rgba(220, 168, 66, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(14, 48, 37, 0.04) 0px, transparent 50%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 4rem;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-badge {
    background-color: rgba(220, 168, 66, 0.12);
    color: #8c6312;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    font-size: 2.8rem;
    line-height: 1.25;
    margin-bottom: 1.5rem;
}

.hero-lead {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 400px;
    background-image: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&q=80&w=800');
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(9, 28, 22, 0.15);
}

.hero-illustration::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(14, 48, 37, 0.7) 0%, rgba(9, 28, 22, 0.9) 100%);
    border-radius: var(--radius-lg);
}

.illustration-card {
    position: relative;
    z-index: 1;
    padding: 2.5rem;
    max-width: 320px;
    border-radius: var(--radius-md);
    color: #ffffff;
}

.card-dots {
    width: 24px;
    height: 24px;
    background-image: radial-gradient(var(--accent) 2px, transparent 2px);
    background-size: 6px 6px;
    margin-bottom: 1.5rem;
}

.illustration-card .card-title {
    font-size: 1.5rem;
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    color: var(--accent);
    display: block;
    margin-bottom: 0.5rem;
}

.illustration-card .card-desc {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Glassmorphism */
.glass {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px 0 rgba(9, 28, 22, 0.2);
}

/* Card General */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

/* Expertise Cards */
.card-expertise:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.card-expertise h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.card-expertise p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Service Cards */
.card-service {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card-service:hover {
    transform: translateY(-5px);
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.service-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
}

.service-badge {
    padding: 0.3rem 0.75rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    background-color: rgba(14, 48, 37, 0.06);
    color: var(--primary);
    white-space: nowrap;
}

.service-badge.gold {
    background-color: rgba(220, 168, 66, 0.15);
    color: #8c6312;
}

.service-desc {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    flex-grow: 1;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.service-features li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
}

.service-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.card-service.featured {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: scale(1.03);
    box-shadow: 0 20px 45px rgba(9, 28, 22, 0.15);
}

.card-service.featured:hover {
    transform: scale(1.03) translateY(-5px);
}

.card-service.featured h3 {
    color: #ffffff;
}

.card-service.featured .service-desc {
    color: rgba(231, 236, 233, 0.85);
}

.card-service.featured .service-features {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.card-service.featured .service-features li {
    color: #ffffff;
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 40px;
    width: 2px;
    background-color: rgba(255, 255, 255, 0.1);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 80px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 31px;
    top: 6px;
    width: 20px;
    height: 20px;
    background-color: var(--accent);
    border: 4px solid var(--bg-dark);
    border-radius: 50%;
    z-index: 2;
}

.timeline-date {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    font-size: 1.4rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    font-size: 0.95rem;
    color: rgba(231, 236, 233, 0.7);
    line-height: 1.6;
}

/* Contact Grid */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.contact-info p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
}

.item-icon {
    font-size: 2rem;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.contact-item p {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Contact Form */
.contact-form-container {
    padding: 3rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.form-input, .form-select {
    width: 100%;
    padding: 0.85rem 1.2rem;
    border: 1px solid rgba(14, 48, 37, 0.15);
    border-radius: var(--radius-sm);
    background-color: #ffffff;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 4px rgba(14, 48, 37, 0.08);
}

.form-success-alert {
    text-align: center;
    animation: fadeIn 0.4s ease-out;
}

.form-success-alert h4 {
    color: var(--primary-light);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.form-success-alert p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.hidden {
    display: none !important;
}

/* Footer */
.main-footer {
    padding: 3rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.9rem;
}

/* Animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container, .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-illustration {
        height: 300px;
    }
    
    .grid-3, .grid-4 {
        grid-template-columns: 1fr 1fr;
    }
    
    .card-service.featured {
        transform: none;
    }
    
    .card-service.featured:hover {
        transform: translateY(-5px);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }

    .section {
        padding: 3.5rem 0;
    }
    
    .main-header {
        position: relative;
        padding: 0.5rem 0;
    }
    
    .header-container {
        flex-direction: column;
        height: auto;
        padding: 1rem 0.75rem;
        gap: 0.8rem;
    }

    .logo-svg {
        width: 140px;
        height: 53px;
    }
    
    .main-nav {
        gap: 0.6rem 1rem;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }

    .main-nav a {
        font-size: 0.82rem;
        padding: 0.3rem 0.5rem;
    }
    
    .hero-section {
        padding: 3rem 0 2rem 0;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 0.35rem 0.8rem;
    }

    .hero-content h1 {
        font-size: 1.85rem;
        line-height: 1.25;
        margin-bottom: 1rem;
    }

    .hero-lead {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    .hero-highlights p {
        font-size: 0.88rem !important;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }

    .hero-actions .btn {
        width: 100%;
        text-align: center;
        justify-content: center;
        padding: 0.8rem 1rem;
        font-size: 0.88rem;
    }

    .illustration-card {
        padding: 1.25rem;
    }

    .illustration-card .card-title {
        font-size: 1.2rem;
    }

    .illustration-card .card-desc {
        font-size: 0.85rem;
    }

    .section-header h2 {
        font-size: 1.65rem;
    }

    .section-desc {
        font-size: 0.92rem;
    }
    
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .card {
        padding: 1.35rem;
    }
    
    .timeline::before {
        left: 12px;
    }
    
    .timeline-item {
        padding-left: 36px;
        margin-bottom: 1.5rem;
    }

    .timeline-item h4 {
        font-size: 1.05rem;
    }

    .timeline-date {
        font-size: 0.8rem;
    }
    
    .timeline-dot {
        left: 5px;
        width: 14px;
        height: 14px;
    }
    
    .contact-form-container {
        padding: 1.25rem;
    }

    .form-input {
        padding: 0.65rem 0.8rem;
        font-size: 0.9rem;
    }

    .contact-item {
        gap: 0.8rem;
    }

    .contact-item h4 {
        font-size: 0.95rem;
    }

    .contact-item p {
        font-size: 0.88rem;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.6rem;
    }

    .main-nav {
        gap: 0.4rem 0.75rem;
    }

    .main-nav a {
        font-size: 0.78rem;
    }

    .btn-nav {
        padding: 0.35rem 0.75rem !important;
    }
}