:root {
    --bg-gradient-start: #1e3c72;
    --bg-gradient-end: #2a5298;
    --card-bg: #ffffff;
    --text-on-bg: #ffffff;
    --text-in-card: #1a202c;
    --accent-color: #007bff;
    --danger-color: #dc3545;
    --success-color: #28a745;
}

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

body {
    font-family: 'Segoe UI', sans-serif; padding: 20px; background-color: #f4f4f9;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    background-attachment: fixed; 
    color: var(--text-on-bg);
    min-height: 100vh;
    line-height: 1.5;
}

a { text-decoration: none; transition: 0.3s; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.centered-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100%;
}

.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}
.page-header h1 { font-size: 1.8rem; margin: 0; color: var(--text-on-bg);}

.card {
    background: var(--card-bg);
    color: var(--text-in-card); 
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

a.card {
    display: block;
    border-left: 6px solid var(--accent-color);
    transition: transform 0.2s, box-shadow 0.2s;
}
a.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}
a.card h3 { color: var(--bg-gradient-start); margin-bottom: 10px; }
a.card p { color: #666; font-size: 0.95rem; }

.login-card {
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.form-group { margin-bottom: 15px; text-align: left; }
label { display: block; margin-bottom: 8px; font-weight: 600; color: #444; }
input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    background: #f8f9fa;
    color: #333;
}
input:focus { border-color: var(--accent-color); outline: none; background: #fff; }

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(to right, var(--bg-gradient-start), var(--bg-gradient-end));
    color: white;
    width: 100%; 
}
.btn-primary:hover { opacity: 0.9; }

.btn-logout {
    background: var(--danger-color);
    color: white;
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    background: rgba(255,255,255,0.15);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 30px;
    padding: 8px 20px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}
.btn-back:hover { background: white; color: var(--bg-gradient-start); }

.table-wrapper {
    background: white;
    border-radius: 15px;
    padding: 10px; 
    overflow-x: auto;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

table {
    border: 1px solid #ddd;
    width: 100%;
    border-collapse: collapse;
    background: white; 
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

th {
    border: 1px solid #ddd;
    background: var(--bg-gradient-start);
    color: white;
    padding: 15px;
    text-align: center;
    text-transform: uppercase;
    font-size: 0.85rem;
}

td {
    padding: 12px;
    border-bottom: 1px solid #eee;
    text-align: center;
}

tr:last-child td { border-bottom: none; }
tr:hover { background-color: #000000; }
tr:nth-child(even) { background-color: #f9f9f9; }

.statut { display: inline-block; width: 20px; height: 20px; border-radius: 50%; }
.rouge { background: var(--danger-color); }
.vert { background: var(--success-color); }

.section-title {
    color: var(--white);
    font-size: 1.4rem;
    margin-top: 40px;      
    margin-bottom: 20px;   
    border-bottom: 1px solid rgba(255, 255, 255, 0.2); 
    padding-bottom: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title:first-of-type {
    margin-top: 10px;
}

.date-cell {
    font-weight: bold; color: #555;
}

/* --- BOUTONS BASCULE VUE (Mois / Semaine) --- */
.view-switcher {
    display: inline-flex;
    background: #e2e8f0;
    padding: 4px;
    border-radius: 8px;
    margin-left: 20px;
    vertical-align: middle;
}

.view-btn {
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    color: #64748b;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.view-btn.active {
    background: white;
    color: var(--bg-gradient-start); /* Bleu foncé */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.view-btn:hover {
    color: var(--bg-gradient-start);
}

/* Navigation Semaine (Flèches) */
.week-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}
.week-nav a {
    background: rgba(30, 60, 114, 0.1);
    padding: 5px 15px;
    border-radius: 5px;
    color: var(--bg-gradient-start);
    font-weight: bold;
}
.week-nav a:hover {
    background: var(--bg-gradient-start);
    color: white;
}