/* Genel Stiller */
:root {
    --primary: #4e73df;
    --primary-dark: #2e59d9;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #4e73df;
    --body-bg: #f8f9fc;
    --card-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
    --text-dark: #2d3748;
    --text-muted: #718096;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--body-bg);
    color: var(--text-dark);
    overflow-x: hidden;
}

/* Sidebar */
#sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    background-color: var(--sidebar-bg);
    z-index: 1000;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

#sidebar .sidebar-header {
    padding: 1.25rem;
    background-color: rgba(0,0,0,0.1);
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

#sidebar .sidebar-header h3 {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0;
}

#sidebar ul.components {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-y: auto;
    flex-grow: 1;
}

#sidebar ul.components li {
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

#sidebar ul.components li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.9rem 1.25rem;
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

#sidebar ul.components li a:hover {
    background-color: var(--sidebar-hover);
    color: #fff;
}

#sidebar ul.components li.active a {
    background-color: var(--sidebar-active);
    color: #fff;
}

#sidebar ul.components li a i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
    color: #94a3b8;
    font-size: 0.8rem;
}

/* Ana içerik */
#content {
    margin-left: 250px;
    padding: 20px;
    min-height: 100vh;
    transition: all 0.3s ease;
}

/* Top navbar (mobil için) */
.navbar-mobile {
    display: none;
    background-color: var(--sidebar-bg);
    padding: 0.75rem 1rem;
}

.navbar-mobile .navbar-toggler {
    border: none;
    color: #fff;
    font-size: 1.5rem;
}

/* Kartlar */
.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: var(--card-shadow);
    margin-bottom: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.3rem 2rem 0 rgba(58, 59, 69, 0.2);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #e2e8f0;
    font-weight: 600;
    padding: 1rem 1.25rem;
    border-radius: 0.5rem 0.5rem 0 0;
}

.card-body {
    padding: 1.25rem;
}

/* İstatistik kartları */
.stat-card {
    border-radius: 0.5rem;
    padding: 1.5rem;
    color: #fff;
    box-shadow: var(--card-shadow);
    margin-bottom: 1.5rem;
    transition: transform 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    opacity: 0.6;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin: 0.25rem 0;
}

.stat-card .stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
}

.bg-primary-gradient { background: linear-gradient(135deg, #4e73df, #224abe); }
.bg-success-gradient { background: linear-gradient(135deg, #1cc88a, #13855c); }
.bg-warning-gradient { background: linear-gradient(135deg, #f6c23e, #dda20a); }
.bg-danger-gradient { background: linear-gradient(135deg, #e74a3b, #be2617); }

/* Tablolar */
.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: #f8f9fc;
    border-bottom: 2px solid #e2e8f0;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
}

.table tbody tr:hover {
    background-color: #f8f9fc;
}

.table td, .table th {
    vertical-align: middle;
}

/* Butonlar */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

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

.btn-sm {
    margin: 0 2px;
}

/* Formlar */
.form-control, .form-select {
    border-radius: 0.375rem;
    border: 1px solid #cbd5e1;
    padding: 0.5rem 0.75rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

/* Bildirimler */
.alert {
    border-radius: 0.375rem;
    border: none;
}

/* Responsive */
@media (max-width: 768px) {
    #sidebar {
        left: -250px;
    }
    #sidebar.active {
        left: 0;
    }
    #content {
        margin-left: 0;
    }
    .navbar-mobile {
        display: block;
    }
    .navbar-mobile .btn-toggle {
        background: none;
        border: none;
        color: #fff;
        font-size: 1.75rem;
        padding: 0;
    }
}