:root {
    --bg-app: #f4f7fa;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-muted: #64748b;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    --danger: #f43f5e;
    --success: #10b981;
    --border: #e2e8f0;
    --radius-lg: 16px;
    --radius-md: 12px;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header Professionnel */
header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.logo {
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Conteneurs de pages */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.container-narrow {
    max-width: 500px;
    margin: 4rem auto;
    padding: 0 1rem;
}

/* Cartes Élégantes */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Formulaires Ronds & Épurés */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input, select, textarea {
    width: 100%;
    padding: 0.85rem 1.2rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: #f8fafc;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px var(--primary-light);
}

/* Boutons UI Style */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.95rem;
    gap: 8px;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }
.btn-secondary { background: #f1f5f9; color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: #e2e8f0; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #e11d48; }

/* Liste audio style */
.audio-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.01);
}

/* Diaporama photos */
.slider-box {
    position: relative;
    height: 250px;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: #000;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

/* 📱 SUPREME VERSION TÉLÉPHONE (UI App native) */
@media (max-width: 768px) {
    header {
        padding: 1rem;
        flex-direction: column;
        gap: 0.75rem;
    }
    .container {
        margin: 1rem auto;
        padding: 0 1rem;
    }
    .container-narrow {
        margin: 2rem auto;
    }
    .grid {
        grid-template-columns: 1fr;
    }
    .card {
        padding: 1.25rem;
        border-radius: var(--radius-md);
    }
    .btn {
        width: 100%;
        padding: 1rem;
    }
    .audio-card {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }
    audio {
        width: 100%;
    }
}