/* ========== STYLES DE BASE ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* ========== LAYOUT PRINCIPAL ========== */
.app-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 100vh;
}

/* ========== SIDEBAR ========== */
.sidebar {
    background-color: #2c3e50;
    color: white;
    padding: 2rem 1rem;
    position: fixed;
    width: 250px;
    height: 100vh;
    overflow-y: auto;
}

.sidebar .logo {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 0.5rem;
}

.sidebar-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: block;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    transition: all 0.3s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(5px);
}

/* ========== MAIN CONTENT ========== */
.main-content {
    grid-column: 2;
    padding: 2rem;
    background-color: #f5f5f5;
    min-height: 100vh;
}

/* ========== HEADER ========== */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e0e0e0;
}

.main-header h1 {
    font-size: 2rem;
    color: #2c3e50;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

/* ========== STATS CARDS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    color: #7f8c8d;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #2c3e50;
}

/* ========== ACTIVITÉ RÉCENTE ========== */
.recent-activity {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.recent-activity h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    transition: background-color 0.3s;
}

.activity-item:hover {
    background-color: #e9ecef;
}

.activity-time {
    background: #3498db;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.activity-item p {
    color: #2c3e50;
    flex: 1;
}

/* ========== PROFIL PAGE ========== */
.profile-container {
    max-width: 800px;
    margin: 0 auto;
}

.profile-header {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    text-align: center;
    margin-bottom: 2rem;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin-bottom: 1rem;
    border: 4px solid #3498db;
}

.profile-header h2 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.profile-header p {
    color: #7f8c8d;
}

.profile-details {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.detail-item {
    display: flex;
    padding: 1rem 0;
    border-bottom: 1px solid #e0e0e0;
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-label {
    width: 150px;
    font-weight: 600;
    color: #2c3e50;
}

.detail-value {
    color: #7f8c8d;
}

/* ========== DASHBOARD PAGE ========== */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

.chart-container {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.chart-container h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.chart-placeholder {
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.tasks-list {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tasks-list h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.task-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid #e0e0e0;
}

.task-item:last-child {
    border-bottom: none;
}

.task-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.task-item label {
    color: #2c3e50;
    flex: 1;
    cursor: pointer;
}

.task-item.completed label {
    text-decoration: line-through;
    color: #95a5a6;
}

.task-date {
    font-size: 0.85rem;
    color: #95a5a6;
}

/* ========== RESPONSIVE ========== */
@media screen and (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
        z-index: 1000;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        grid-column: 1;
        padding: 1rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .profile-header {
        padding: 1rem;
    }

    .detail-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .detail-label {
        width: auto;
    }
}

/* ========== UTILITAIRES ========== */
.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 2rem;
}

.mb-2 {
    margin-bottom: 2rem;
}

.hidden {
    display: none;
}