/* ===== Thème général ===== */

:root {
    --green: #10b981;
    --green-dark: #059669;
    --bg: #0f172a;
    --card-bg: #ffffff;
    --text: #111827;
}

* {
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: radial-gradient(circle at top, #16a34a 0, #0f172a 55%, #020617 100%);
    color: var(--text);
}

/* ===== En-tête & navigation ===== */

header {
    background: linear-gradient(135deg, var(--green-dark), var(--green));
    color: #f9fafb;
    padding: 1.5rem 1rem 1rem;
    text-align: center;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
    position: sticky;
    top: 0;
    z-index: 10;
}

header h1 {
    margin: 0 0 0.5rem;
    letter-spacing: 0.08em;
    font-size: 1.8rem;
    text-transform: uppercase;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0.25rem 0 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

nav ul li {
    margin: 0;
}

nav ul li a {
    display: inline-block;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    color: #ecfdf5;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    background-color: rgba(15, 23, 42, 0.12);
    border: 1px solid rgba(15, 23, 42, 0.2);
}

nav ul li a:hover,
nav ul li a:focus {
    background-color: rgba(15, 23, 42, 0.4);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.35);
}

/* ===== Contenu principal ===== */

main {
    max-width: 960px;
    margin: 2.5rem auto 3.5rem;
    padding: 2rem 1.5rem;
    background-color: var(--card-bg);
    border-radius: 1.25rem;
    box-shadow: 0 24px 50px rgba(15, 23, 42, 0.6);
}

main h2 {
    margin-top: 0;
    font-size: 1.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--green-dark);
}

main p {
    line-height: 1.6;
    margin-bottom: 1rem;
}

/* Images dans le contenu */

main img {
    max-width: 100%;
    height: auto;
    border-radius: 1rem;
    display: block;
    margin: 1.25rem auto;
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.4);
}

/* ===== Galerie ===== */

main .gallery,
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.gallery a {
    text-decoration: none;
}

.gallery img {
    max-width: 100%;
    border-radius: 1rem;
    display: block;
    box-shadow: 0 16px 35px rgba(15, 23, 42, 0.5);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.gallery img:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 22px 45px rgba(15, 23, 42, 0.65);
}

/* ===== Formulaires ===== */

form {
    max-width: 640px;
    margin: 1.5rem auto 0;
}

label {
    display: block;
    margin-top: 0.9rem;
    font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border-radius: 0.75rem;
    border: 1px solid #d1d5db;
    margin-top: 0.35rem;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.25);
}

input[type="submit"],
button,
.form-button {
    margin-top: 1rem;
    padding: 0.6rem 1.4rem;
    border-radius: 999px;
    border: none;
    background: linear-gradient(135deg, var(--green), var(--green-dark));
    color: #ecfdf5;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    box-shadow: 0 10px 24px rgba(16, 185, 129, 0.55);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

input[type="submit"]:hover,
button:hover,
.form-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px rgba(16, 185, 129, 0.85);
    filter: brightness(1.02);
}

/* ===== Tableau / planning ===== */

table {
    border-collapse: collapse;
    width: 100%;
    margin-top: 1.25rem;
    background-color: #f9fafb;
    border-radius: 0.9rem;
    overflow: hidden;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.18);
}

th,
td {
    padding: 0.7rem 0.9rem;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
}

th {
    background-color: var(--green-dark);
    color: #ecfdf5;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
}

tr:nth-child(even) {
    background-color: #f3f4f6;
}

/* ===== Pied de page ===== */

footer {
    background-color: #020617;
    color: #9ca3af;
    text-align: center;
    padding: 1.2rem 1rem;
    font-size: 0.9rem;
}