/* ============================================
   GACS Dashboard - Modern Lightweight UI
   ============================================ */

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #60a5fa;
    --primary-50: #eff6ff;
    
    /* Semantic Colors */
    --success: #15803d;
    --success-bg: #dcfce7;
    --danger: #b91c1c;
    --danger-bg: #fee2e2;
    --warning: #b45309;
    --warning-bg: #fef3c7;
    --info: #0f766e;
    --info-bg: #ecfeff;
    
    /* Neutral Colors */
    --dark: #0f172a;
    --gray-900: #0f172a;
    --gray-800: #1e293b;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --gray-50: #f8fafc;
    --white: #FFFFFF;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition: all 0.15s ease;
}

:root[data-theme="dark-noc"] {
    --primary: #7dd3fc;
    --primary-hover: #38bdf8;
    --primary-light: #bae6fd;
    --primary-50: rgba(125, 211, 252, 0.1);
    --success: #4ade80;
    --success-bg: rgba(74, 222, 128, 0.14);
    --danger: #fca5a5;
    --danger-bg: rgba(252, 165, 165, 0.12);
    --warning: #fcd34d;
    --warning-bg: rgba(252, 211, 77, 0.14);
    --info: #5eead4;
    --info-bg: rgba(94, 234, 212, 0.12);
    --dark: #e5eef9;
    --gray-900: #e5eef9;
    --gray-800: #d5deea;
    --gray-700: #9fb0c5;
    --gray-600: #7b8ea8;
    --gray-500: #5f7290;
    --gray-400: #334155;
    --gray-300: #223047;
    --gray-200: #172033;
    --gray-100: #0f172a;
    --gray-50: #081120;
    --white: #0b1120;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 13px;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-100);
    color: var(--gray-700);
    line-height: 1.5;
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6,
.page-title,
.topbar h4,
.sidebar-header h3,
.stat-info h3,
.card-header,
.modal-title {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    letter-spacing: -0.02em;
}

/* ============================================
   Layout Components
   ============================================ */

.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    border-color: var(--gray-300);
}

.card-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-md) var(--space-lg);
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header i {
    color: var(--primary);
    margin-right: var(--space-sm);
}

.card-body {
    padding: var(--space-lg);
}

/* ============================================
   Stats Cards
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

@media (max-width: 1200px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 576px) {
    .stats-grid { grid-template-columns: 1fr; }
}

.stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    border-top: 3px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: var(--gray-700);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.10);
    border-color: var(--gray-300);
}

.stat-card.success,
.stat-card.stat-card-success,
.stat-card-primary {
    border-top: 3px solid var(--primary-color);
}

.stat-card.success,
.stat-card.stat-card-success {
    border-top: 3px solid var(--success);
}

.stat-card.danger,
.stat-card.stat-card-danger {
    border-top: 3px solid var(--danger);
}

.stat-card.warning,
.stat-card.stat-card-warning {
    border-top: 3px solid var(--warning);
}

.stat-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
    margin: 0;
    color: var(--gray-800);
}

.stat-info p {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin: var(--space-xs) 0 0;
}

.device-info-line { margin: 0.25rem 0; }

/* Tighten device detail overview spacing */
.device-detail-header-tight { padding: 0.25rem 0.5rem; display:flex; align-items:center; justify-content: flex-start; gap: 0.5rem; }
.device-detail-header-tight .badge { margin-left: 6px; }

.stat-icon {
    font-size: 2rem;
    opacity: 0.3;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn:hover {
    transform: translateY(-1px);
}

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}
.btn-secondary:hover {
    background: var(--gray-300);
}

.btn-info {
    background: var(--info);
    color: white;
}
.btn-info:hover {
    background: #0284C7;
}
.btn-info i {
    color: white;
}

/* Refresh button - always show icon with text */
.btn-refresh {
    background: var(--primary);
    color: white;
    opacity: 1;
}
.btn-refresh i { display: inline-block; color: white; }
.btn-refresh:hover {
    background: var(--primary-hover);
}

/* Modal buttons - consistent sizing */
.modal-footer .btn {
    min-width: 100px;
    justify-content: center;
}
.modal-footer .btn i {
    width: 16px;
}

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

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
}

.btn-icon {
    width: 28px;
    height: 28px;
    padding: 0;
}

/* ============================================
   Tables
   ============================================ */

.table {
    width: 100%;
    margin: 0;
    font-size: 0.8rem;
}

.table thead th {
    background: var(--gray-100);
    color: var(--gray-600);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.03em;
    padding: var(--space-sm) var(--space-md);
    border-bottom: 2px solid var(--gray-200);
    white-space: nowrap;
    position: sticky;
    top: 0;
}

.table tbody td {
    padding: var(--space-sm) var(--space-md);
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-100);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

.table a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

/* ============================================
   Badges
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.badge.bg-primary { background: var(--primary) !important; }
.badge.bg-secondary { background: var(--gray-500) !important; }
.badge.bg-success { background: var(--success) !important; }
.badge.bg-danger { background: var(--danger) !important; }
.badge.bg-warning { background: var(--warning) !important; color: var(--dark) !important; }
.badge.bg-info { background: #0EA5E9 !important; color: white !important; }
.badge.bg-purple { background: #6D28D9 !important; color: white !important; }

.badge.online { background: var(--success); color: white; }
.badge.offline { background: var(--gray-400); color: white; }

/* Ensure Total Devices card uses purple top border with white background (legacy UI look) */
.stat-card-primary {
    background: #fff;
    border-top: 3px solid var(--primary);
}
.stat-card-primary:hover {
    box-shadow: 0 8px 25px -3px rgba(79, 70, 229, 0.35);
}

/* ============================================
   Forms
   ============================================ */

.form-control {
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    transition: var(--transition);
}

.form-select {
    padding: 0.4rem 2.25rem 0.4rem 0.6rem; /* extra right padding for caret */
    font-size: 0.85rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    transition: var(--transition);
    background-position: right 0.6rem center; /* keep caret inside */
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    outline: none;
}

.input-group-text {
    padding: 0.4rem 0.6rem;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 0.85rem;
}

/* ============================================
   Search
   ============================================ */

.search-box {
    position: relative;
    max-width: 280px;
}

.search-box input {
    padding-left: 2.25rem;
    border-radius: var(--radius-lg);
    background: var(--gray-100);
}

.search-box input:focus {
    background: var(--white);
}

.search-box i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

/* ============================================
   Dropdown
   ============================================ */

.dropdown-menu {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: var(--space-xs);
    font-size: 0.8rem;
}

.dropdown-item {
    padding: 0.4rem 0.6rem;
    border-radius: var(--radius-sm);
    color: var(--gray-700);
}
.dropdown-item:hover {
    background: var(--primary-50);
    color: var(--primary);
}

/* ============================================
   Tabs
   ============================================ */

.nav-tabs {
    border-bottom: 2px solid var(--gray-200);
    gap: var(--space-xs);
}

.nav-tabs .nav-link {
    border: none;
    color: var(--gray-500);
    padding: 0.6rem 1rem;
    font-weight: 500;
    font-size: 0.85rem;
    border-radius: var(--radius) var(--radius) 0 0;
}

.nav-tabs .nav-link:hover {
    color: var(--primary);
    background: var(--gray-50);
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    background: var(--white);
    border-bottom: 2px solid var(--primary);
    margin-bottom: -2px;
}

/* ============================================
   Alerts
   ============================================ */

.alert {
    padding: var(--space-md);
    border-radius: var(--radius);
    font-size: 0.85rem;
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.alert > i {
    flex: 0 0 auto;
}
.alert > * {
    min-width: 0;
}

.alert-success { background: var(--success-bg); color: #065F46; }
.alert-danger { background: var(--danger-bg); color: #991B1B; }
.alert-warning { background: var(--warning-bg); color: #92400E; }
.alert-info { background: var(--info-bg); color: #1E40AF; }

/* ============================================
   Modal
   ============================================ */

.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-header {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    padding: var(--space-md) var(--space-lg);
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

/* ============================================
   Pagination
   ============================================ */

.pagination {
    margin: 0;
    gap: 2px;
}

.page-link {
    color: var(--primary);
    border: none;
    padding: 0.4rem 0.65rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.page-link:hover {
    background: var(--gray-100);
}

.page-item.active .page-link {
    background: var(--primary);
    color: white;
}

/* ============================================
   Utilities
   ============================================ */

.text-muted { color: var(--gray-500) !important; }
.text-primary { color: var(--primary) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: 0.25rem !important; }
.p-2 { padding: 0.5rem !important; }
.p-3 { padding: 1rem !important; }
.p-4 { padding: 1.5rem !important; }

.m-0 { margin: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }

.gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }

.d-flex { display: flex !important; }
.align-items-center { align-items: center !important; }
.justify-content-between { justify-content: space-between !important; }
.flex-wrap { flex-wrap: wrap !important; }

.w-100 { width: 100% !important; }

/* ============================================
   Charts
   ============================================ */

.chart-container {
    position: relative;
    height: 200px;
}

/* ============================================
   Spinner
   ============================================ */

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin: 1.5rem auto;
}

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

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 992px) {
    .stats-grid {
        gap: var(--space-md);
    }
    
    .stat-card {
        padding: var(--space-md);
    }
    
    .stat-info h3 {
        font-size: 1.4rem;
    }
    
    .card-header {
        flex-direction: column;
        gap: var(--space-sm);
        align-items: flex-start;
    }
}

@media (max-width: 768px) {
    .table {
        font-size: 0.75rem;
    }
    
    .table thead th,
    .table tbody td {
        padding: 0.5rem;
    }
}

/* ============================================
   Custom Scrollbar
   ============================================ */

::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}