:root {
    --color-primary: #0071e3;
    --color-primary-hover: #0077ED;
    --color-success: #34c759;
    --color-warning: #ff9500;
    --color-danger: #ff3b30;
    --color-info: #5ac8fa;
    --color-dark: #1d1d1f;
    --color-gray: #86868b;
    --color-light-gray: #f5f5f7;
    --color-border: #d2d2d7;
    --color-white: #ffffff;
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --border-radius: 12px;
    --border-radius-lg: 18px;
    --border-radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background: var(--color-light-gray);
    color: var(--color-dark);
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-primary-hover);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-fluid {
    width: 100%;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background: rgba(29, 29, 31, 0.9);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-white);
    font-weight: 600;
    font-size: 1.1rem;
}

.navbar-brand img {
    height: 24px;
    width: auto;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.navbar-menu a {
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    font-weight: 400;
    padding: 8px 0;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--color-white);
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 48px;
    left: 0;
    width: 260px;
    height: calc(100vh - 48px);
    background: var(--color-white);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    z-index: 900;
    transition: var(--transition);
}

.sidebar-menu {
    padding: 20px 0;
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 2px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--color-dark);
    font-size: 15px;
    font-weight: 400;
    transition: var(--transition);
}

.sidebar-menu a:hover {
    background: var(--color-light-gray);
}

.sidebar-menu a.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.sidebar-menu a svg,
.sidebar-menu a i {
    width: 20px;
    height: 20px;
    opacity: 0.8;
}

.sidebar-section {
    padding: 16px 24px 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Main Content */
.main-content {
    margin-left: 260px;
    margin-top: 48px;
    min-height: calc(100vh - 48px);
    padding: 24px;
    transition: var(--transition);
}

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

/* Page Header */
.page-header {
    margin-bottom: 24px;
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.page-subtitle {
    font-size: 15px;
    color: var(--color-gray);
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 17px;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--color-border);
    background: var(--color-light-gray);
}

/* Stat Cards */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
}

.stat-card-icon.primary { background: rgba(0,113,227,0.1); color: var(--color-primary); }
.stat-card-icon.success { background: rgba(52,199,89,0.1); color: var(--color-success); }
.stat-card-icon.warning { background: rgba(255,149,0,0.1); color: var(--color-warning); }
.stat-card-icon.danger { background: rgba(255,59,48,0.1); color: var(--color-danger); }

.stat-card-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-card-label {
    font-size: 14px;
    color: var(--color-gray);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    border: none;
    border-radius: 980px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 17px;
}

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

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

.btn-secondary {
    background: var(--color-light-gray);
    color: var(--color-dark);
}

.btn-secondary:hover {
    background: #e8e8ed;
}

.btn-success {
    background: var(--color-success);
    color: var(--color-white);
}

.btn-danger {
    background: var(--color-danger);
    color: var(--color-white);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-dark);
}

.btn-outline:hover {
    background: var(--color-light-gray);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
}

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

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

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-white);
    color: var(--color-dark);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0,113,227,0.1);
}

.form-control::placeholder {
    color: var(--color-gray);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2386868b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.form-text {
    font-size: 13px;
    color: var(--color-gray);
    margin-top: 6px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.table th,
.table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-weight: 600;
    color: var(--color-gray);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-light-gray);
}

.table tbody tr:hover {
    background: var(--color-light-gray);
}

.table-actions {
    display: flex;
    gap: 8px;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 980px;
}

.badge-aktif { background: rgba(52,199,89,0.15); color: #248a3d; }
.badge-gangguan { background: rgba(255,149,0,0.15); color: #c93400; }
.badge-offline { background: rgba(134,134,139,0.15); color: #636366; }
.badge-rusak { background: rgba(255,59,48,0.15); color: #d70015; }
.badge-belum_aktif { background: rgba(90,200,250,0.15); color: #0071a4; }

/* Map */
.map-container {
    height: 500px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.map-container.fullscreen {
    position: fixed;
    top: 48px;
    left: 260px;
    right: 0;
    bottom: 0;
    height: auto;
    border-radius: 0;
    z-index: 800;
}

#map {
    width: 100%;
    height: 100%;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-success { background: rgba(52,199,89,0.1); color: #248a3d; border-left: 4px solid var(--color-success); }
.alert-danger { background: rgba(255,59,48,0.1); color: #d70015; border-left: 4px solid var(--color-danger); }
.alert-warning { background: rgba(255,149,0,0.1); color: #c93400; border-left: 4px solid var(--color-warning); }
.alert-info { background: rgba(0,113,227,0.1); color: #0071e3; border-left: 4px solid var(--color-primary); }

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: auto;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 24px 24px 0;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 0 24px 24px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-container {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.login-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.login-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: 15px;
    color: var(--color-gray);
    margin-bottom: 32px;
}

.login-form .form-group {
    text-align: left;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 14px;
    border-radius: var(--border-radius);
    background: var(--color-white);
    color: var(--color-dark);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.pagination a:hover {
    background: var(--color-light-gray);
}

.pagination .active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-gray); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .map-container.fullscreen {
        left: 0;
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        display: none;
    }
    
    .stat-cards {
        grid-template-columns: 1fr 1fr;
    }
    
    .card-body {
        padding: 16px;
    }
    
    .login-container {
        padding: 32px 24px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table th,
    .table td {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .stat-cards {
        grid-template-columns: 1fr;
    }
    
    .btn {
        width: 100%;
    }
    
    .table-actions {
        flex-direction: column;
    }
    
    .stat-card-value {
        font-size: 28px;
    }
}

/* PWA Install Banner */
.pwa-install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-dark);
    color: var(--color-white);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    z-index: 3000;
    transform: translateY(100%);
    transition: var(--transition);
}

.pwa-install-banner.show {
    transform: translateY(0);
}

.pwa-install-banner p {
    font-size: 14px;
}

.pwa-install-banner .btn {
    flex-shrink: 0;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-light-gray);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
}

/* Filter Panel */
.filter-panel {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
}

.filter-row .form-group {
    margin-bottom: 0;
    flex: 1;
    min-width: 180px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-gray);
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 8px;
}

/* Leaflet Custom Styles */
.leaflet-popup-content-wrapper {
    border-radius: var(--border-radius) !important;
    box-shadow: var(--shadow-md) !important;
}

.leaflet-popup-content {
    margin: 16px !important;
    font-family: var(--font-family) !important;
}

.popup-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.popup-info {
    font-size: 13px;
    color: var(--color-gray);
    margin-bottom: 4px;
}

.popup-status {
    margin-top: 8px;
}