/* ============================================
   Lycée Horizon - Style Global
   ============================================ */

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

:root {
    --primary: #1a5276;
    --primary-light: #2980b9;
    --accent: #e67e22;
    --accent-hover: #d35400;
    --bg: #f5f7fa;
    --white: #ffffff;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --shadow: 0 4px 15px rgba(0,0,0,0.08);
    --radius: 12px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* HEADER & NAVIGATION */
header {
    background: var(--primary);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    text-align: center;
    padding: 15px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header-top h1 {
    color: var(--white);
    font-size: 1.8rem;
    letter-spacing: 1px;
}

.header-top p {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

nav {
    background: var(--primary-light);
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav ul li a {
    display: block;
    padding: 14px 28px;
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

nav ul li a:hover {
    background: rgba(255,255,255,0.15);
}

nav ul li a.active {
    background: var(--accent);
}

/* MAIN CONTENT */
main {
    flex: 1;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 40px 20px;
}

.page-title {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 10px;
    text-align: center;
}

.page-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
    font-size: 1.05rem;
}

/* CARDS */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 30px;
    margin-bottom: 25px;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-3px);
}

/* BANNIÈRE */
.banner {
    width: 100%;
    height: 320px;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 35px;
    position: relative;
}

.banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: rgba(0,0,0,0.5);
    color: var(--white);
}

.banner-overlay h2 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

/* TABLEAUX */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    font-size: 0.95rem;
}

thead th {
    background: var(--primary);
    color: var(--white);
    padding: 16px;
    text-align: left;
    font-weight: 600;
}

tbody tr:nth-child(even) {
    background: #f8fafc;
}

tbody tr:hover {
    background: #e8f4f8;
    transition: background 0.3s;
}

tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid #e2e8f0;
}

/* LISTE DES MATIÈRES */
.matiere-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.matiere-item {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 25px;
    border-left: 5px solid var(--primary-light);
    transition: all 0.3s ease;
}

.matiere-item:hover {
    border-left-color: var(--accent);
    transform: translateX(5px);
}

.matiere-item h3 {
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.matiere-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ANNONCES */
.annonce-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.annonce-item {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 22px 28px;
    display: flex;
    align-items: flex-start;
    gap: 18px;
    transition: all 0.3s ease;
}

.annonce-item:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

.annonce-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.annonce-content h3 {
    color: var(--primary);
    margin-bottom: 6px;
    font-size: 1.15rem;
}

.annonce-content .date {
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
}

.annonce-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.btn-alert {
    display: inline-block;
    margin-top: 30px;
    padding: 14px 32px;
    background: var(--accent);
    color: var(--white);
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(230,126,34,0.3);
}

.btn-alert:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(230,126,34,0.4);
}

/* FORMULAIRE */
.form-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s, box-shadow 0.3s;
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(41,128,185,0.15);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(26,82,118,0.3);
}

.error-msg {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: 6px;
    display: none;
}

.error-msg.visible {
    display: block;
}

/* FOOTER */
footer {
    background: var(--primary);
    color: rgba(255,255,255,0.8);
    text-align: center;
    padding: 25px 20px;
    margin-top: auto;
}

footer p {
    font-size: 0.9rem;
}

footer .footer-links {
    margin-top: 10px;
}

footer .footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    margin: 0 12px;
    font-size: 0.85rem;
    transition: color 0.3s;
}

footer .footer-links a:hover {
    color: var(--white);
}

/* RESPONSIVE - MOBILE */
@media (max-width: 768px) {
    .header-top h1 {
        font-size: 1.4rem;
    }

    nav ul {
        flex-direction: column;
    }

    nav ul li a {
        padding: 12px 20px;
        text-align: center;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .banner {
        height: 220px;
    }

    .banner-overlay h2 {
        font-size: 1.3rem;
    }

    main {
        padding: 25px 15px;
    }

    .page-title {
        font-size: 1.7rem;
    }

    .card {
        padding: 20px;
    }

    .matiere-list {
        grid-template-columns: 1fr;
    }

    .annonce-item {
        flex-direction: column;
        padding: 18px 20px;
    }

    table {
        font-size: 0.85rem;
    }

    thead th, tbody td {
        padding: 10px 12px;
    }

    .form-container {
        padding: 0 5px;
    }
}

@media (max-width: 480px) {
    .banner {
        height: 180px;
    }

    .banner-overlay {
        padding: 15px;
    }

    .banner-overlay h2 {
        font-size: 1.1rem;
    }
}