/* ============ VARIABLES & RESET ============ */
:root {
    --primary: #0F172A;
    --primary-dark: #020617;
    --primary-light: #1e293b;
    --secondary: #3B82F6;
    --secondary-dark: #2563eb;
    --secondary-light: #60a5fa;
    --accent: #F59E0B;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    --dark: #0F172A;
    --gray-800: #374151;
    --gray-600: #4b5563;
    --gray-400: #9ca3af;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --white: #ffffff;
    --success: #10b981;
    --error: #ef4444;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ============ UTILITIES ============ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background: var(--secondary);
    color: var(--white);
}

/* ============ HEADER ============ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-svg {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--primary);
}

.logo-text span {
    color: var(--accent);
}

.footer .logo-text {
    color: var(--white);
}

.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--secondary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============ HERO ============ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--secondary-dark) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    width: 100%;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--accent);
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Barre de recherche plaque */
.search-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 20px;
    max-width: 600px;
    margin: 0 auto 2rem;
    box-shadow: var(--shadow-xl);
}

.search-box-inner {
    display: flex;
    gap: 10px;
}

.plaque-input-wrapper {
    flex: 1;
    position: relative;
}

.plaque-input {
    width: 100%;
    padding: 16px 20px;
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    text-align: center;
    letter-spacing: 2px;
    transition: var(--transition);
    background: var(--gray-100);
}

.plaque-input:focus {
    outline: none;
    border-color: var(--secondary);
    background: var(--white);
}

.plaque-input::placeholder {
    text-transform: none;
    letter-spacing: normal;
    font-weight: 400;
    color: var(--gray-400);
}

.plaque-input.valid {
    border-color: var(--success);
}

.plaque-input.invalid {
    border-color: var(--error);
}

.search-btn {
    padding: 16px 30px;
    white-space: nowrap;
}

.search-hint {
    color: var(--gray-600);
    font-size: 0.85rem;
    margin-top: 10px;
}

/* Stats hero */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
}

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

/* ============ COMMENT CA MARCHE ============ */
.steps {
    background: var(--gray-100);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    z-index: 0;
}

.step-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

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

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.step-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.step-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* ============ AVANTAGES ============ */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-card {
    text-align: center;
    padding: 30px 20px;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.advantage-card:hover {
    border-color: var(--secondary);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
}

.advantage-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.advantage-card p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* ============ TEMOIGNAGES ============ */
.testimonials {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--secondary-dark) 100%);
    color: var(--white);
}

.testimonials .section-title,
.testimonials .section-subtitle {
    color: var(--white);
}

.testimonials .section-subtitle {
    opacity: 0.9;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.testimonial-stars {
    color: var(--accent);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.testimonial-info h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.testimonial-info span {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ============ ARTICLES ============ */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.article-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.article-image {
    height: 200px;
    background: linear-gradient(135deg, var(--gray-200), var(--gray-300));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--gray-400);
}

.article-content {
    padding: 25px;
}

.article-category {
    display: inline-block;
    background: var(--secondary);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.article-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.article-card h3 a:hover {
    color: var(--secondary);
}

.article-excerpt {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--gray-400);
}

.articles-cta {
    text-align: center;
    margin-top: 3rem;
}

/* ============ CTA SECTION ============ */
.cta-section {
    background: var(--accent);
    color: var(--white);
    text-align: center;
    padding: 60px 0;
}

.cta-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.cta-section .btn {
    background: var(--white);
    color: var(--accent);
}

.cta-section .btn:hover {
    background: var(--dark);
    color: var(--white);
}

/* ============ FOOTER ============ */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-about .logo {
    margin-bottom: 1rem;
}

.footer-about p {
    color: var(--gray-400);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent);
}

.footer-column h4 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-400);
    margin-bottom: 15px;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--gray-400);
}

.footer-legal {
    display: flex;
    gap: 20px;
}

.footer-legal a:hover {
    color: var(--accent);
}

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

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .steps-grid,
    .testimonials-grid,
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-grid::before {
        display: none;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .search-box-inner {
        flex-direction: column;
    }

    .section-title {
        font-size: 2rem;
    }

    .steps-grid,
    .testimonials-grid,
    .articles-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-column h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}