:root {
    /* Couleurs principales */
    --primary-gold: #F7931A;
    --primary-dark: #0A0E27;
    --primary-blue: #1E3A8A;
    --accent-cyan: #06B6D4;
    --accent-amber: #FDB022;
    
    /* Couleurs secondaires */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Typographie */
    --font-display: 'Crimson Pro', serif;
    --font-body: 'DM Sans', sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--gray-800);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--gray-50);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1.25rem 0;
    border-bottom: 1px solid rgba(247, 147, 26, 0.1);
    animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    font-family: var(--font-display);
}

.logo-icon {
    color: var(--primary-gold);
    filter: drop-shadow(0 0 8px rgba(247, 147, 26, 0.4));
}

.brand-accent {
    color: var(--primary-gold);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 1.75rem;
    height: 2px;
    background: white;
    transition: var(--transition-smooth);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition-smooth);
    letter-spacing: 0.01em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background: var(--primary-gold);
    transition: transform 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: white;
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 6rem;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, #0F1537 50%, #1A1F4A 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-gold);
    top: -10%;
    right: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-cyan);
    bottom: -15%;
    left: -10%;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--primary-blue);
    top: 50%;
    left: 50%;
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -50px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

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

.hero-title {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    color: white;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.accent-line {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    font-family: var(--font-body);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-amber) 100%);
    color: white;
    box-shadow: 0 4px 20px rgba(247, 147, 26, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(247, 147, 26, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-gold);
}

.btn-outline {
    background: transparent;
    color: var(--gray-800);
    border: 2px solid var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--primary-gold);
    color: var(--primary-gold);
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    animation: fadeIn 1.2s ease-out 0.3s both;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.chart-container {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 400px;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 1.5rem;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    gap: 0.75rem;
}

.chart-bar {
    flex: 1;
    background: linear-gradient(180deg, var(--primary-gold) 0%, var(--accent-amber) 100%);
    border-radius: 0.5rem 0.5rem 0 0;
    height: var(--height);
    animation: growBar 1s ease-out var(--delay) both;
    box-shadow: 0 -4px 20px rgba(247, 147, 26, 0.3);
}

@keyframes growBar {
    from {
        height: 0;
        opacity: 0;
    }
    to {
        height: var(--height);
        opacity: 1;
    }
}

/* Concept Section */
.concept-section {
    padding: var(--spacing-xl) 0;
    background: white;
}

.section-header {
    text-align: left;
    margin-bottom: 3rem;
}

.section-header.centered {
    text-align: center;
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-gold);
    margin-bottom: 0.75rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
    max-width: 800px;
}

.section-header.centered .section-title {
    margin: 0 auto;
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-top: 1rem;
    max-width: 600px;
}

.section-header.centered .section-description {
    margin: 1rem auto 0;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.concept-card {
    background: var(--gray-50);
    padding: 2.5rem;
    border-radius: 1.25rem;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.concept-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-gold);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.concept-icon {
    color: var(--primary-gold);
    margin-bottom: 1.5rem;
}

.concept-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.concept-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* Parcours Section */
.parcours-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--gray-50) 0%, white 100%);
}

.parcours-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.parcours-card {
    position: relative;
    background: white;
    padding: 3rem;
    border-radius: 1.5rem;
    border: 2px solid var(--gray-200);
    transition: var(--transition-smooth);
    overflow: hidden;
}

.parcours-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary-gold) 0%, var(--accent-amber) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

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

.parcours-card:hover {
    transform: translateY(-12px);
    border-color: var(--primary-gold);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
}

.parcours-badge {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-amber) 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.parcours-header {
    margin-bottom: 1.5rem;
}

.parcours-icon {
    color: var(--primary-gold);
    margin-bottom: 1rem;
}

.parcours-card h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
}

.parcours-description {
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.parcours-features {
    list-style: none;
    margin-bottom: 2rem;
}

.parcours-features li {
    padding: 0.75rem 0;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-200);
}

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

/* Advantages Section */
.advantages-section {
    padding: var(--spacing-xl) 0;
    background: var(--primary-dark);
    color: white;
}

.advantages-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.advantages-text .section-label {
    color: var(--accent-amber);
}

.advantages-text .section-title {
    color: white;
    margin-bottom: 2.5rem;
}

.advantage-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.advantage-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.advantage-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-gold);
    line-height: 1;
    opacity: 0.3;
}

.advantage-item h4 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
}

.advantage-item p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.stats-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1.5rem;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

/* Warning Section */
.warning-section {
    padding: var(--spacing-lg) 0;
    background: var(--gray-50);
}

.warning-box {
    background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
    border-left: 6px solid #F59E0B;
    border-radius: 1rem;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.warning-icon {
    color: #D97706;
    flex-shrink: 0;
}

.warning-content h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: #92400E;
    margin-bottom: 0.75rem;
}

.warning-content p {
    color: #78350F;
    line-height: 1.7;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1A1F4A 100%);
    text-align: center;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    font-family: var(--font-display);
}

.footer-col h4 {
    color: white;
    font-weight: 700;
    margin-bottom: 1rem;
    font-family: var(--font-display);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-col a:hover {
    color: var(--primary-gold);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .advantages-content {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition-smooth);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .parcours-grid {
        grid-template-columns: 1fr;
    }
    
    .concept-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 300px;
    }
}