:root {
    --bg-color: #f7f2ea;
    --text-color: #33251d;
    --nav-bg: #2b1b14;
    --nav-text: #ffffff;
    --card-bg: #ffffff;
    --border-color: #e2d5c7;
    --primary-color: #6b3f25;
    --accent-color: #c76b32;
    --accent-light: #e9a66f;
    --shadow: 0 8px 25px rgba(0, 0, 0, 0.10);
    --shadow-color: rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --bg-color: #17110e;
    --text-color: #f3e8dc;
    --nav-bg: #0f0b09;
    --nav-text: #ffffff;
    --card-bg: #241914;
    --border-color: #49352b;
    --primary-color: #e9a66f;
    --accent-color: #d8793c;
    --accent-light: #f0b184;
    --shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
    --shadow-color: rgba(0, 0, 0, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease, color 0.3s ease;
}

header {
    background-color: var(--nav-bg);
    color: var(--nav-text);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.20);
}

nav {
    max-width: 1200px;
    margin: auto;
    padding: 18px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 27px;
    font-weight: 800;
    letter-spacing: 1px;
}

/* Logo agrandi pour une meilleure visibilité */
.logo img {
    height: 65px;
    width: auto;
    display: block;
    object-fit: contain;
    border-radius: 50%;
}

nav ul {
    display: flex;
    align-items: center;
    gap: 25px;
    list-style: none;
}

nav a {
    color: var(--nav-text);
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}

nav a:hover,
nav a.active {
    color: var(--accent-light);
}

#theme-toggle {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.7);
    padding: 8px 14px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: 0.3s;
}

#theme-toggle:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

main {
    flex: 1;
    min-height: 80vh;
}

.hero {
    min-height: 70vh;
    background: linear-gradient(
            rgba(35, 20, 12, 0.62),
            rgba(35, 20, 12, 0.62)
        ),
        url('https://picsum.photos/1200/800') center/cover no-repeat;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 40px 20px;
}

.hero h1 {
    font-size: clamp(35px, 5vw, 64px);
    max-width: 900px;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: 1px;
}

.hero p {
    max-width: 700px;
    font-size: 19px;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 13px 25px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: 0.3s;
}

.btn:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

section {
    max-width: 1200px;
    margin: 70px auto;
    padding: 0 25px;
}

section h2 {
    text-align: center;
    color: var(--primary-color);
    font-size: 35px;
    margin-bottom: 25px;
    position: relative;
}

section h2::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 12px auto;
    border-radius: 10px;
}

section p {
    max-width: 950px;
    margin: 10px auto;
    text-align: center;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    margin-top: 35px;
}

.card, .stand-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: 0.3s;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.card:hover, .stand-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 12px var(--shadow-color);
}

.card img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--accent-light);
    margin-bottom: 18px;
    margin-left: auto;
    margin-right: auto;
}

.stand-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
    border-radius: 8px;
    margin-bottom: 15px;
}

.stand-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.card h3, .stand-content h3 {
    color: var(--primary-color);
    font-size: 21px;
    margin-bottom: 8px;
}

.card p, .stand-content p {
    font-size: 15px;
    text-align: center;
}

.contact-form {
    background-color: var(--card-bg);
    max-width: 650px;
    margin: auto;
    padding: 35px;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 7px;
    font-weight: 700;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 13px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 16px;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(199, 107, 50, 0.15);
}

.error-message {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: #e74c3c;
}

.form-group.error .error-message {
    display: block;
}

.success-msg {
    background-color: #2ecc71;
    color: white;
    padding: 14px;
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
    display: none;
}

footer {
    background-color: var(--nav-bg);
    color: white;
    text-align: center;
    padding: 25px;
    margin-top: 70px;
}

footer p {
    margin: 0;
    font-size: 14px;
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 15px;
        padding: 16px 20px;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .hero {
        min-height: 60vh;
    }

    .hero h1 {
        font-size: 35px;
    }

    .hero p {
        font-size: 16px;
    }

    section {
        margin: 50px auto;
        padding: 0 16px;
    }

    section h2 {
        font-size: 29px;
    }

    .contact-form {
        padding: 25px;
    }
}