/* ========================================
   VARIABLES & RESET
   ======================================== */

:root {
    /* Palette Premium Bois */
    --wood-dark: #2C1810;
    --wood-medium: #5D4037;
    --wood-light: #8D6E63;
    --wood-pale: #D7CCC8;
    --forest-green: #2E5339;
    --forest-light: #4A7856;
    --accent-gold: #C9A961;
    --cream: #F5F1ED;
    --white: #FFFFFF;
    --black: #1A1A1A;

    /* Typographie */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--wood-dark);
    background: var(--cream);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap');

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    color: var(--wood-dark);
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.6;
    color: var(--wood-medium);
}

/* ========================================
   LAYOUT
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-xl) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--space-lg);
}

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

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-gold);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--space-sm);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--wood-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-sm) var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-main {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--wood-dark);
    letter-spacing: 0.05em;
}

.logo-sub {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--accent-gold);
}

.nav-menu {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--wood-medium);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--forest-green);
    color: var(--white);
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
}

.nav-cta:hover {
    background: var(--forest-light);
    transform: translateY(-2px);
}

.nav-cta::after {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--wood-dark);
    transition: var(--transition-smooth);
}

/* ========================================
   HERO
   ======================================== */

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(135deg, rgba(46, 83, 57, 0.85) 0%, rgba(44, 24, 16, 0.7) 100%),
        url('https://images.unsplash.com/photo-1513828583688-c52646db42da?w=1920&q=85&fm=webp') center/cover;
    z-index: -1;
}

.grain-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(
            90deg,
            rgba(0, 0, 0, 0.03) 0px,
            transparent 1px,
            transparent 2px,
            rgba(0, 0, 0, 0.03) 3px
        ),
        repeating-linear-gradient(
            0deg,
            rgba(0, 0, 0, 0.03) 0px,
            transparent 1px,
            transparent 2px,
            rgba(0, 0, 0, 0.03) 3px
        );
    animation: breathe 8s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.02);
        opacity: 0.8;
    }
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: 0 var(--space-md);
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.hero-title-main {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-title-sub {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 400;
    font-style: italic;
    color: var(--accent-gold);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-tagline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin: var(--space-md) 0 var(--space-lg);
    font-weight: 300;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--white);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: floatUpDown 2s ease-in-out infinite;
}

@keyframes floatUpDown {
    0%, 100% {
        transform: translate(-50%, 0);
    }
    50% {
        transform: translate(-50%, -10px);
    }
}

.scroll-indicator {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--accent-gold), transparent);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--accent-gold);
    color: var(--wood-dark);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 20px rgba(201, 169, 97, 0.3);
}

.btn-primary:hover {
    background: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(201, 169, 97, 0.4);
}

/* ========================================
   RACINES - NOTRE HISTOIRE
   ======================================== */

.racines {
    background: var(--white);
}

.racines-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.racines-image {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}

.racines-image img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.racines-image:hover img {
    transform: scale(1.05);
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--white);
    font-style: italic;
    font-size: 0.95rem;
}

.racines-content p {
    margin-bottom: var(--space-md);
}

.info-legal {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 2px solid var(--wood-pale);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-label {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-gold);
    font-weight: 600;
}

.info-value {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--wood-dark);
}

/* ========================================
   SERVICES
   ======================================== */

.services {
    background: var(--cream);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.service-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.service-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.4));
}

.service-content {
    padding: var(--space-md);
}

.service-title {
    font-size: 1.75rem;
    margin-bottom: var(--space-sm);
    color: var(--forest-green);
}

.service-description {
    margin-bottom: var(--space-md);
    color: var(--wood-medium);
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.service-features li {
    position: relative;
    padding-left: 1.75rem;
    color: var(--wood-light);
    font-size: 0.95rem;
}

.service-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: 600;
}

/* ========================================
   PROCESS TIMELINE
   ======================================== */

.process {
    background: var(--white);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.process-step {
    position: relative;
    padding: var(--space-md);
    background: var(--cream);
    border-radius: 8px;
    border-left: 4px solid var(--accent-gold);
    transition: var(--transition-smooth);
}

.process-step:hover {
    background: var(--white);
    transform: translateX(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.step-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--wood-pale);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.step-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    color: var(--forest-green);
}

.process-step p {
    font-size: 0.95rem;
    color: var(--wood-medium);
}

/* ========================================
   RÉALISATIONS GALLERY
   ======================================== */

.realisations {
    background: var(--wood-dark);
    color: var(--white);
}

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

.realisations .section-title,
.realisations .section-intro {
    color: var(--white);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    aspect-ratio: 4/3;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.gallery-item:hover img {
    transform: scale(1.15);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    transform: translateY(100%);
    transition: var(--transition-smooth);
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

.gallery-caption h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.gallery-caption p {
    font-size: 0.875rem;
    color: var(--wood-pale);
}

/* ========================================
   CONTACT
   ======================================== */

.contact {
    background: var(--cream);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.contact-item {
    display: flex;
    gap: var(--space-md);
}

.contact-icon {
    width: 40px;
    height: 40px;
    color: var(--accent-gold);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--forest-green);
}

.contact-item p {
    color: var(--wood-medium);
    line-height: 1.6;
}

.contact-form-wrapper {
    background: var(--white);
    padding: var(--space-lg);
    border-radius: 12px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    color: var(--forest-green);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--wood-dark);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--wood-pale);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-smooth);
    background: var(--cream);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
    background: var(--white);
}

.form-group textarea {
    resize: vertical;
}

.contact-form .btn-primary {
    width: 100%;
    cursor: pointer;
    border: none;
    font-family: var(--font-body);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: var(--wood-dark);
    color: var(--wood-pale);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.footer-col p {
    color: var(--wood-pale);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-legal {
    margin-top: var(--space-sm);
    font-size: 0.875rem;
    opacity: 0.7;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--wood-pale);
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--accent-gold);
    padding-left: 8px;
}

.footer-quote {
    font-style: italic;
    color: var(--accent-gold);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-bottom {
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 992px) {
    .racines-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 4rem;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: var(--space-lg);
        transition: left 0.3s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .gallery {
        grid-template-columns: 1fr;
    }

    .info-legal {
        flex-direction: column;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero-title-main {
        font-size: 2.5rem;
    }

    .hero-title-sub {
        font-size: 1.25rem;
    }

    .section {
        padding: var(--space-lg) 0;
    }

    .racines-image img {
        height: 400px;
    }
}