/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4A9EFF;
    --primary-hover: #5AAEFF;
    --secondary: #3F3F46;
    --success: #10B981;
    --danger: #F44336;
    --warning: #F59E0B;
    --dark: #1E1E1E;
    --dark-light: #252526;
    --dark-lighter: #2D2D30;
    --text: #FFFFFF;
    --text-muted: #B0B0B0;
    --border: #3F3F46;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark);
    color: var(--text);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1E1E1E 0%, #2D2D30 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--dark-light);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header i {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 15px;
}

.login-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 14px;
}

.login-form label i {
    margin-right: 8px;
    color: var(--primary);
}

.login-form input {
    width: 100%;
    padding: 12px 15px;
    background: var(--dark);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    transition: all 0.3s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--text-muted);
    font-size: 12px;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 250px;
    height: 100vh;
    background: var(--dark-light);
    border-right: 1px solid var(--border);
    padding: 20px 0;
    overflow-y: auto;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

.sidebar-header h2 {
    font-size: 20px;
    margin-bottom: 5px;
}

.sidebar-header h2 i {
    color: var(--primary);
    margin-right: 8px;
}

.sidebar-header p {
    font-size: 12px;
    color: var(--text-muted);
}

.sidebar-nav {
    padding: 0 10px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 5px;
    transition: all 0.3s;
}

.nav-item i {
    margin-right: 10px;
    width: 20px;
}

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

.nav-item.active {
    background: var(--primary);
    color: var(--text);
}

.nav-item.logout {
    color: var(--danger);
    margin-top: 20px;
}

.nav-item.logout:hover {
    background: rgba(244, 67, 54, 0.1);
}

/* Main Content */
.main-content {
    margin-left: 250px;
    min-height: 100vh;
    background: var(--dark);
}

.header {
    background: var(--dark-lighter);
    padding: 20px 30px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 24px;
}

.user-info {
    color: var(--text-muted);
    font-size: 14px;
}

.content {
    padding: 30px;
}

/* Cards */
.card {
    background: var(--dark-light);
    border-radius: 10px;
    border: 1px solid var(--border);
    margin-bottom: 25px;
    overflow: hidden;
}

.card-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 18px;
    display: flex;
    align-items: center;
}

.card-header h2 i {
    margin-right: 10px;
    color: var(--primary);
}

.card-body {
    padding: 25px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--dark-light);
    border-radius: 10px;
    padding: 25px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.blue {
    background: rgba(74, 158, 255, 0.2);
    color: var(--primary);
}

.stat-icon.green {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.stat-icon.orange {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.stat-icon.red {
    background: rgba(244, 67, 54, 0.2);
    color: var(--danger);
}

.stat-info h3 {
    font-size: 28px;
    margin-bottom: 5px;
}

.stat-info p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--dark);
}

.data-table th {
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    border-bottom: 2px solid var(--border);
}

.data-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border);
}

.data-table tbody tr:hover {
    background: var(--dark);
}

.text-center {
    text-align: center;
}

.text-small {
    font-size: 12px;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary);
    color: var(--text);
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--secondary);
    color: var(--text);
}

.btn-secondary:hover {
    background: #4A4A52;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: var(--dark);
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s;
    margin-right: 5px;
}

.btn-icon:hover {
    background: var(--primary);
}

.btn-icon.danger:hover {
    background: var(--danger);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    background: var(--dark);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-control {
    padding: 8px 12px;
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 14px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.alert-danger {
    background: rgba(244, 67, 54, 0.2);
    color: var(--danger);
    border: 1px solid rgba(244, 67, 54, 0.3);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-danger {
    background: rgba(244, 67, 54, 0.2);
    color: var(--danger);
}

/* Info Table */
.info-table {
    width: 100%;
}

.info-table th {
    padding: 12px 15px;
    text-align: left;
    color: var(--text-muted);
    font-weight: 500;
    width: 200px;
}

.info-table td {
    padding: 12px 15px;
    color: var(--text);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .main-content {
        margin-left: 0;
    }

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