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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loading-content {
    text-align: center;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
    padding: 40px;
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.logo h1 {
    color: #2c3e50;
    font-size: 24px;
    margin-bottom: 5px;
}

.logo p {
    color: #7f8c8d;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #34495e;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn:active {
    transform: translateY(0);
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-danger {
    background-color: #fee;
    border: 1px solid #fcc;
    color: #c00;
}

.alert-success {
    background-color: #efffef;
    border: 1px solid #cfc;
    color: #0a0;
}

/* Dashboard Layout */
.dashboard {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: linear-gradient(180deg, #2c3e50 0%, #1a252f 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 1000;
}

.sidebar-header {
    padding: 25px 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h3 {
    font-size: 18px;
    margin-bottom: 5px;
}

.sidebar-header p {
    font-size: 12px;
    opacity: 0.8;
}

.sidebar-menu {
    padding: 20px 0;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-left-color: #3498db;
}

.menu-item.active {
    background: rgba(52, 152, 219, 0.2);
    color: white;
    border-left-color: #3498db;
}

.menu-item i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 250px;
    transition: margin-left 0.3s ease;
}

.header {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: #2c3e50;
    cursor: pointer;
    padding: 5px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.content {
    padding: 30px;
}

/* Cards */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    padding: 25px;
    margin-bottom: 25px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.card-title {
    font-size: 20px;
    color: #2c3e50;
    font-weight: 600;
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

.table tr:hover {
    background: #f8f9fa;
}

/* Badge */
.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .header.active {
        margin-left: 250px;
        width: calc(100% - 250px);
    }
}

@media (max-width: 768px) {
    .login-box {
        padding: 30px 20px;
    }
    
    .content {
        padding: 20px 15px;
    }
    
    .card {
        padding: 20px 15px;
    }
    
    .table th,
    .table td {
        padding: 8px 10px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .user-info span {
        display: none;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .card-title {
        font-size: 18px;
    }
}

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

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

/* Tahun Akademik Selector */
.tahun-akademik-selector {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.tahun-akademik-selector select {
    background: white;
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    margin-left: 10px;
    font-weight: 500;
}

/* Jurusan dan Prodi Cards */
.jurusan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.jurusan-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

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

.jurusan-card h4 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 20px;
}

.prodi-list {
    list-style: none;
}

.prodi-list li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
    color: #7f8c8d;
}

.prodi-list li:last-child {
    border-bottom: none;
}


/* Responsive Tables */
@media (max-width: 768px) {
    .table-responsive table {
        display: block;
    }
    
    .table-responsive thead {
        display: none;
    }
    
    .table-responsive tbody,
    .table-responsive tr,
    .table-responsive td {
        display: block;
    }
    
    .table-responsive tr {
        margin-bottom: 15px;
        border: 1px solid #ddd;
        border-radius: 5px;
        padding: 10px;
    }
    
    .table-responsive td {
        text-align: right;
        position: relative;
        padding-left: 50%;
    }
    
    .table-responsive td::before {
        content: attr(data-label);
        position: absolute;
        left: 0;
        width: 45%;
        padding-left: 15px;
        font-weight: bold;
        text-align: left;
    }
}

/* Progress Bars */
.progress-bar {
    height: 10px;
    background: #eee;
    border-radius: 5px;
    overflow: hidden;
    margin: 5px 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
    border-radius: 5px;
    transition: width 0.3s;
}

/* Card Hover Effects */
.card-hover {
    transition: transform 0.3s, box-shadow 0.3s;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* Status Colors */
.status-online {
    color: #2ecc71;
}

.status-offline {
    color: #e74c3c;
}

.status-busy {
    color: #f39c12;
}