:root {
    --primary: #1a237e;
    --secondary: #283593;
    --accent: #ff6f00;
    --success: #2e7d32;
    --danger: #c62828;
    --light-bg: #f5f7fa;
}

body {
    background-color: var(--light-bg);
    font-family: 'Segoe UI', sans-serif;
}

.sidebar {
    width: 250px;
    height: 100vh;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    padding-top: 20px;
    overflow-y: auto;
    overflow-x: hidden;
}

    .sidebar .logo {
        padding: 20px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        margin-bottom: 20px;
    }

        .sidebar .logo h5 {
            color: #ffd54f;
            font-weight: 700;
            margin: 0;
        }

        .sidebar .logo small {
            color: rgba(255,255,255,0.6);
            font-size: 11px;
        }

    .sidebar .nav-link {
        color: rgba(255,255,255,0.8);
        padding: 12px 20px;
        border-radius: 0;
        transition: all 0.2s;
    }

        .sidebar .nav-link:hover,
        .sidebar .nav-link.active {
            background: rgba(255,255,255,0.15);
            color: white;
            padding-left: 28px;
        }

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

.main-content {
    margin-left: 250px;
    padding: 30px;
    min-height: 100vh;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    border-left: 4px solid var(--primary);
    transition: transform 0.2s;
}

    .stat-card:hover {
        transform: translateY(-2px);
    }

    .stat-card.danger {
        border-left-color: var(--danger);
    }

    .stat-card.success {
        border-left-color: var(--success);
    }

    .stat-card.warning {
        border-left-color: var(--accent);
    }

    .stat-card .value {
        font-size: 28px;
        font-weight: 700;
        color: var(--primary);
    }

    .stat-card.danger .value {
        color: var(--danger);
    }

    .stat-card.success .value {
        color: var(--success);
    }

    .stat-card .label {
        color: #666;
        font-size: 13px;
        margin-top: 4px;
    }

.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.card-header {
    background: white;
    border-bottom: 2px solid var(--light-bg);
    font-weight: 600;
    color: var(--primary);
    border-radius: 12px 12px 0 0 !important;
    padding: 16px 20px;
}

.table th {
    background-color: var(--primary);
    color: white;
    font-weight: 500;
    font-size: 13px;
}

.table td {
    font-size: 13px;
    vertical-align: middle;
}

.badge-kategori {
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
}

.login-container {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, #4a148c 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: white;
    border-radius: 16px;
    padding: 40px;
    width: 400px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

    .login-card h3 {
        color: var(--primary);
        font-weight: 700;
    }

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

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

.progress-bar-custom {
    height: 8px;
    border-radius: 4px;
    background: var(--light-bg);
    overflow: hidden;
}

    .progress-bar-custom .fill {
        height: 100%;
        border-radius: 4px;
        background: var(--primary);
        transition: width 0.5s ease;
    }

.upload-zone {
    border: 2px dashed #ccc;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

    .upload-zone:hover {
        border-color: var(--primary);
        background: rgba(26, 35, 126, 0.05);
    }
/* Hamburger Butonu */
.hamburger-btn {
    display: none;
    position: fixed;
    top: 15px;
    left: 15px;
    z-index: 1100;
    background: #1a237e;
    color: white;
    border: none;
    border-radius: 8px;
    width: 42px;
    height: 42px;
    font-size: 18px;
    cursor: pointer;
}

/* Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

/* Mobil */
@media (max-width: 768px) {
    .hamburger-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        height: 100%;
        z-index: 1000;
        transition: left 0.3s ease;
        width: 260px;
    }

        .sidebar.sidebar-acik {
            left: 0;
        }

    .sidebar-overlay.overlay-aktif {
        display: block;
    }

    .main-content {
        margin-left: 0 !important;
        width: 100% !important;
        padding-top: 60px;
    }
}