/* ===========================
   VARIABLES CSS
   =========================== */
:root {
    --color-primary: #e0ad37;
    --color-secondary: #016326;
    --color-background: #ffffff;
    --color-text: #333333;
    --color-light-gray: #f5f5f5;
    --color-border: #e0e0e0;
    
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --font-size-large: 24px;
    --font-size-xl: 32px;
    --font-size-xxl: 48px;
    
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
}

/* ===========================
   TYPO ET TEXTE
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-xxl);
    line-height: 1.2;
}

h2 {
    font-size: var(--font-size-xl);
    color: var(--color-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: var(--font-size-large);
    color: var(--color-secondary);
}

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-secondary);
}

/* ===========================
   LAYOUT
   =========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* ===========================
   HEADER ET NAVIGATION
   =========================== */
.header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: var(--spacing-md) 0;
    transition: padding 300ms ease, box-shadow 300ms ease;
}

.header.shrink {
    padding: 0px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.header.shrink .logo img {
    max-width: 85px;
    transition: max-width 300ms ease;
}

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

.logo img {
    max-width: 150px;
    height: auto;
}

.nav-list {
    display: none;
    list-style: none;
    flex-direction: column;
    gap: var(--spacing-md);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

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

.nav-list a {
    color: var(--color-text);
    font-weight: 500;
    display: block;
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-secondary);
    transition: var(--transition);
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===========================
   SECTIONS PRINCIPALES
   =========================== */
section {
    padding: var(--spacing-xl) 0;
}

.hero {
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xl) var(--spacing-sm);
}

.hero-content h1 {
    color: var(--color-background);
    margin-bottom: var(--spacing-md);
}

.hero-content p {
    font-size: var(--font-size-large);
    margin-bottom: 0;
}

.about {
    background-color: var(--color-light-gray);
}

.about-content {
    margin-top: var(--spacing-lg);
}

.about-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.about-list li {
    font-weight: 500;
    color: var(--color-secondary);
}

/* Hero Section */
.hero {
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(224, 173, 55, 0.7) 0%, rgba(1, 99, 38, 0.7) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: #ffffff;
    text-align: center;
}

.hero-content h1 {
    color: #ffffff;
}

.hero-content p {
    color: #ffffff;
}

@media (min-width: 768px) {
    .hero {
        min-height: 500px;
    }
}

@media (min-width: 1024px) {
    .hero {
        min-height: 600px;
    }
}

/* ===========================
   CARDS PROJETS
   =========================== */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.project-card {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.project-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
}

.project-card-image {
    width: 100%;
    height: auto;
    overflow: hidden;
    background-color: var(--color-light-gray);
}

.project-card-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.project-card-content {
    padding: var(--spacing-md);
}

.project-card-content h3 {
    margin-bottom: var(--spacing-sm);
}

.project-card-content p {
    font-size: 14px;
    color: #666;
    margin-bottom: var(--spacing-md);
}

/* ===========================
   BOUTONS
   =========================== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    font-size: 14px;
}

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

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

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

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

/* ===========================
   SECTION DÉMARCHE
   =========================== */
.approach {
    background-color: var(--color-light-gray);
}

.approach-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.step {
    background-color: var(--color-background);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
    text-align: center;
}

.step-number {
    display: inline-block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.step h3 {
    margin-bottom: var(--spacing-sm);
}

.step p {
    font-size: 14px;
    color: #666;
    margin-bottom: 0;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    background-color: var(--color-secondary);
    color: var(--color-background);
    padding-top:50px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    font-size: 14px;
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--color-primary);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
    font-size: 14px;
}

/* Remove extra bottom spacing from copyright paragraph */
.footer-bottom p {
    margin: 0;
    padding: 0;
}

/* ===========================
   MEDIA QUERIES - TABLETTE
   =========================== */
@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }

    .nav-list {
        display: flex;
        flex-direction: row;
        gap: var(--spacing-lg);
        position: static;
        background-color: transparent;
        padding: 0;
        border-bottom: none;
        align-items: center;
        /* improved desktop menu visuals */
    }

    .nav-list a {
        color: var(--color-text);
        font-size: 14px;
        font-weight: 600;
        padding: calc(var(--spacing-xs) + 4px) calc(var(--spacing-sm) + 6px);
        border-radius: 6px;
        transition: background-color 0.18s ease, color 0.18s ease;
    }

    .nav-list a:hover {
        background-color: rgba(224, 173, 55, 0.12);
        color: var(--color-secondary);
    }

    .nav-list a {
        color: var(--color-text);
        font-size: 14px;
    }

    h1 {
        font-size: 40px;
    }

    h2 {
        font-size: 32px;
    }

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

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

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

/* ===========================
   MEDIA QUERIES - DESKTOP
   =========================== */
@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    h1 {
        font-size: var(--font-size-xxl);
    }

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

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

    .logo img {
        max-width: 250px;
    }
}