/* VARIABLES GLOBALES */
:root {
    --primary: #1d9bf0;
    --primary-rgb: 29, 155, 240;
    --isep: #0066CC;
    --gold: #FFD700;
    --success: #10b981;
    --error: #ef4444;
    --bg-dark: #0f1419;
    --bg-card: #1c2028;
    --border: rgba(255, 255, 255, 0.08);
    --text-main: #e7e9ea;
    --text-dim: #8b98a5;
    --radius: 12px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* RESET & BASE */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
}

/* SIDEBAR */
.sidebar {
    width: 280px;
    height: 100vh;
    position: fixed;
    background: rgba(15, 20, 25, 0.8);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--border);
    padding: 2.5rem 1.5rem;
    z-index: 100;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 3rem;
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--isep));
    border-radius: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.9rem 1.2rem;
    color: var(--text-dim);
    text-decoration: none;
    border-radius: 10px;
    transition: var(--transition);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.nav-item:hover {
    background: var(--border);
    color: var(--text-main);
}

/* MAIN CONTENT */
.content {
    margin-left: 280px;
    padding: 4rem 10% 4rem 5%;
    width: 100%;
}

.main-header { margin-bottom: 4rem; }
.main-header h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 0.5rem; }
.version { font-size: 0.9rem; color: var(--primary); padding: 4px 10px; border: 1px solid var(--primary); border-radius: 20px; }

/* SECTIONS */
.section { margin-bottom: 6rem; }
.section-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
    display: flex;
    align-items: center;
    gap: 15px;
}
.section-title::after { content: ""; height: 1px; background: var(--border); flex-grow: 1; }

.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* COULEURS */
.color-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.color-group h3 { font-size: 0.8rem; color: var(--text-dim); text-transform: uppercase; margin-bottom: 1rem; }
.color-row {
    display: flex; align-items: center; gap: 15px; margin-bottom: 12px;
    background: rgba(255,255,255,0.03); padding: 10px; border-radius: 8px;
}
.color-swatch.bg-main {
    background: var(--bg-dark); /* Référence au code #0f1419 */
    border: 1px solid var(--border); /* Optionnel : pour le voir si le fond est identique */
}
.color-swatch { width: 40px; height: 40px; border-radius: 6px; }
.color-swatch.primary { background: var(--primary); }
.color-swatch.isep { background: var(--isep); }
.color-swatch.gold { background: var(--gold); }
.color-swatch.success { background: var(--success); }
.color-swatch.error { background: var(--error); }
.color-swatch.bg-card { background: var(--bg-card); }
.color-info span { display: block; font-weight: 600; font-size: 0.9rem; }
.color-info code { color: var(--text-dim); font-size: 0.8rem; }

/* FORMULAIRES */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; font-weight: 500; color: var(--text-dim); }
.input-field {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: white;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}
.input-field:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(29, 155, 240, 0.1); }
.input-field.success { border-color: var(--success); }
.input-field.error { border-color: var(--error); }
.msg-success { font-size: 0.8rem; color: var(--success); display: block; margin-top: 5px; }
.msg-error { font-size: 0.8rem; color: var(--error); display: block; margin-top: 5px; }

/* BOUTONS */
.btn-group { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
    padding: 0.8rem 1.6rem;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: white; }
.btn-isep { background: var(--isep); color: white; }
.btn-gold { background: var(--gold); color: black; }
.btn-outline { background: transparent; border: 2px solid var(--border); color: white; }
.btn:hover { transform: translateY(-3px); filter: brightness(1.1); box-shadow: 0 8px 20px rgba(0,0,0,0.3); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* CARTES */
.card-demo-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.content-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
}
.content-card:hover { border-color: var(--primary); transform: translateY(-5px); }
.card-banner { height: 120px; background: linear-gradient(45deg, #1c2028, #2f3336); }
.card-content { padding: 1.5rem; }
.badge { background: rgba(29, 155, 240, 0.1); color: var(--primary); font-size: 0.7rem; font-weight: 800; padding: 4px 12px; border-radius: 20px; text-transform: uppercase; }
.content-card h3 { margin: 12px 0 8px; font-size: 1.2rem; }
.content-card p { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 20px; }
.card-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border); padding-top: 15px; }

/* CARTE PREMIUM */
.premium { border: 1px solid var(--gold); position: relative; }
.premium-badge { position: absolute; top: 15px; right: 15px; background: var(--gold); color: black; font-weight: 900; font-size: 0.7rem; padding: 2px 8px; border-radius: 4px; }
.full-width { width: 100%; justify-content: center; }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .sidebar { width: 80px; padding: 2rem 0.5rem; }
    .sidebar span, .sidebar-logo span { display: none; }
    .content { margin-left: 80px; }
}