/* ============================================
   Smart Stick IoT Dashboard - Main Stylesheet
   Dark Mode, Glassmorphism, Modern Design
   ============================================ */

/* ---- Google Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ---- CSS Variables ---- */
:root {
    /* Background Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.8);
    --bg-card-hover: rgba(30, 41, 59, 0.9);
    --bg-sidebar: rgba(15, 23, 42, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-input: rgba(30, 41, 59, 0.6);

    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #e2e8f0;

    /* Accent Colors */
    --accent-primary: #6366f1;
    --accent-primary-glow: rgba(99, 102, 241, 0.3);
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #a78bfa;

    /* Status Colors */
    --color-safe: #10b981;
    --color-safe-glow: rgba(16, 185, 129, 0.25);
    --color-safe-bg: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-glow: rgba(245, 158, 11, 0.25);
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-danger: #ef4444;
    --color-danger-glow: rgba(239, 68, 68, 0.25);
    --color-danger-bg: rgba(239, 68, 68, 0.1);
    --color-info: #3b82f6;
    --color-info-glow: rgba(59, 130, 246, 0.25);
    --color-info-bg: rgba(59, 130, 246, 0.1);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-safe: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-info: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);

    /* Border */
    --border-color: rgba(148, 163, 184, 0.1);
    --border-glow: rgba(99, 102, 241, 0.3);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px -5px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --header-height: 65px;
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --border-radius-xs: 6px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background gradient pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(59, 130, 246, 0.04) 0%, transparent 60%);
    z-index: -1;
    pointer-events: none;
}

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

a:hover {
    color: var(--accent-tertiary);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-card-hover);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-color);
    z-index: 1050;
    transition: width var(--transition-normal), transform var(--transition-normal);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-color);
    min-height: var(--header-height);
    flex-shrink: 0;
}

.sidebar-brand .brand-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
    box-shadow: 0 4px 15px var(--accent-primary-glow);
}

.sidebar-brand .brand-text {
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition-normal);
}

.sidebar-brand .brand-text h6 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.3px;
}

.sidebar-brand .brand-text span {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
}

.sidebar.collapsed .brand-text {
    opacity: 0;
    width: 0;
}

/* Sidebar Menu */
.sidebar-menu {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

.sidebar-menu .menu-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    padding: 12px 20px 8px;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar.collapsed .menu-label {
    text-align: center;
    padding: 12px 5px 8px;
    font-size: 0;
}

.sidebar.collapsed .menu-label::after {
    content: '•••';
    font-size: 10px;
}

.sidebar-menu .nav-item {
    padding: 2px 10px;
}

.sidebar-menu .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
    position: relative;
    font-size: 13.5px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-menu .nav-link i {
    font-size: 18px;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.sidebar-menu .nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.sidebar-menu .nav-link:hover i {
    transform: scale(1.1);
}

.sidebar-menu .nav-link.active {
    color: #fff;
    background: var(--gradient-primary);
    box-shadow: 0 4px 15px var(--accent-primary-glow);
}

.sidebar-menu .nav-link.active i {
    color: #fff;
}

.sidebar.collapsed .nav-link span {
    opacity: 0;
    width: 0;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 11px 0;
}

/* Nav badge */
.nav-badge {
    background: var(--color-danger);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 50px;
    margin-left: auto;
    min-width: 20px;
    text-align: center;
    animation: pulse-badge 2s infinite;
}

.sidebar.collapsed .nav-badge {
    position: absolute;
    top: 4px;
    right: 8px;
    margin: 0;
    padding: 1px 5px;
    font-size: 9px;
}

@keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Sidebar Toggle */
.sidebar-toggle {
    border-top: 1px solid var(--border-color);
    padding: 14px;
    flex-shrink: 0;
}

.sidebar-toggle button {
    width: 100%;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
}

.sidebar-toggle button:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.sidebar.collapsed .sidebar-toggle button span {
    display: none;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
    padding: 0;
}

.main-content.expanded {
    margin-left: var(--sidebar-collapsed);
}

/* Header */
.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 28px;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.header-title span {
    color: var(--accent-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
}

.header-status .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.header-status .status-dot.online {
    background: var(--color-safe);
    box-shadow: 0 0 8px var(--color-safe);
}

.header-status .status-dot.offline {
    background: var(--color-danger);
    box-shadow: 0 0 8px var(--color-danger);
    animation: none;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.85); }
}

.btn-header {
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 6px;
}

.btn-header.btn-primary-custom {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-primary-glow);
}

.btn-header.btn-primary-custom:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-primary-glow);
}

/* Page Content */
.page-content {
    padding: 24px 28px;
}

/* ============================================
   SENSOR CARDS
   ============================================ */
.sensor-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 22px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.sensor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sensor-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.sensor-card:hover::before {
    opacity: 1;
}

.sensor-card .card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
    position: relative;
}

.sensor-card .card-icon.icon-ultrasonic {
    background: var(--color-info-bg);
    color: var(--color-info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.sensor-card .card-icon.icon-water {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.sensor-card .card-icon.icon-vibration {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.sensor-card .card-icon.icon-fall {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.sensor-card .card-icon.icon-distance {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-safe);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.sensor-card .card-icon.icon-status {
    background: rgba(168, 85, 247, 0.1);
    color: #a855f7;
    border: 1px solid rgba(168, 85, 247, 0.2);
}

.sensor-card .card-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.sensor-card .card-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -1px;
    line-height: 1.1;
}

.sensor-card .card-value .unit {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    margin-left: 2px;
}

.sensor-card .card-sublabel {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.status-badge.safe {
    background: var(--color-safe-bg);
    color: var(--color-safe);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-badge.warning {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-badge.danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
    animation: pulse-danger 2s infinite;
}

@keyframes pulse-danger {
    0%, 100% { box-shadow: 0 0 0 0 var(--color-danger-glow); }
    50% { box-shadow: 0 0 15px 0 var(--color-danger-glow); }
}

/* ============================================
   GLASS PANEL
   ============================================ */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.glass-panel:hover {
    border-color: rgba(148, 163, 184, 0.15);
}

.glass-panel .panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-color);
}

.glass-panel .panel-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
}

.glass-panel .panel-title i {
    color: var(--accent-primary);
    font-size: 16px;
}

.glass-panel .panel-body {
    padding: 22px;
}

/* ============================================
   MAP
   ============================================ */
.map-container {
    height: 350px;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    position: relative;
}

.map-container #mapDashboard,
.map-container #mapLocation {
    height: 100%;
    width: 100%;
    z-index: 1;
}

.map-overlay {
    position: absolute;
    bottom: 12px;
    left: 12px;
    z-index: 999;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(10px);
    padding: 8px 14px;
    border-radius: var(--border-radius-xs);
    border: 1px solid var(--border-color);
    font-size: 11px;
    color: var(--text-secondary);
}

/* Fix Leaflet for dark mode */
.leaflet-tile-pane {
    filter: brightness(0.7) contrast(1.2) saturate(0.8);
}

.leaflet-control-zoom a {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.leaflet-popup-content-wrapper {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border-radius: var(--border-radius-sm) !important;
    box-shadow: var(--shadow-lg) !important;
}

.leaflet-popup-tip {
    background: var(--bg-secondary) !important;
}

.leaflet-popup-close-button {
    color: var(--text-muted) !important;
}

/* ============================================
   NOTIFICATION LIST
   ============================================ */
.notification-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-item:hover {
    background: var(--bg-glass);
    margin: 0 -22px;
    padding: 14px 22px;
    border-radius: var(--border-radius-sm);
}

.notification-item .notif-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.notification-item .notif-icon.obstacle {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.notification-item .notif-icon.water {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.notification-item .notif-icon.fall {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.notification-item .notif-icon.danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.notification-item .notif-icon.info {
    background: rgba(168, 85, 247, 0.1);
    color: #a855f7;
}

.notification-item .notif-content h6 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 3px;
}

.notification-item .notif-content p {
    font-size: 11px;
    color: var(--text-muted);
    margin: 0;
}

/* ============================================
   CHART AREA
   ============================================ */
.chart-container {
    position: relative;
    height: 280px;
    width: 100%;
}

.chart-container canvas {
    max-height: 100%;
}

/* ============================================
   DATA TABLE
   ============================================ */
.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table thead th {
    background: rgba(99, 102, 241, 0.08);
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    white-space: nowrap;
}

.data-table thead th:first-child {
    border-radius: var(--border-radius-sm) 0 0 0;
}

.data-table thead th:last-child {
    border-radius: 0 var(--border-radius-sm) 0 0;
}

.data-table tbody td {
    padding: 12px 16px;
    font-size: 13px;
    color: var(--text-accent);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--bg-glass);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================
   FORMS & INPUTS
   ============================================ */
.form-control-dark {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    padding: 10px 14px;
    font-size: 13px;
    font-family: 'Inter', sans-serif;
    transition: all var(--transition-fast);
}

.form-control-dark:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
    background: var(--bg-secondary);
}

.form-control-dark::placeholder {
    color: var(--text-muted);
}

/* Custom styling for select and date dropdowns */
select.form-control-dark {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394a3b8' class='bi bi-chevron-down' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px !important;
}

select.form-control-dark option {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

input[type="date"].form-control-dark::-webkit-calendar-picker-indicator {
    filter: invert(1);
    opacity: 0.5;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

input[type="date"].form-control-dark::-webkit-calendar-picker-indicator:hover {
    opacity: 0.8;
}

.filter-bar input[type="date"],
.filter-bar select {
    width: auto;
    min-width: 150px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn-glass {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: 'Inter', sans-serif;
}

.btn-glass:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-glow);
}

.btn-accent {
    background: var(--gradient-primary);
    border: none;
    color: #fff;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 15px var(--accent-primary-glow);
    font-family: 'Inter', sans-serif;
}

.btn-accent:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-primary-glow);
}

.btn-danger-custom {
    background: var(--gradient-danger);
    border: none;
    color: #fff;
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: 'Inter', sans-serif;
}

.btn-danger-custom:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px var(--color-danger-glow);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 320px;
    max-width: 420px;
    box-shadow: var(--shadow-xl);
    animation: slideInToast 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: all;
    backdrop-filter: blur(20px);
}

.toast-item.toast-exit {
    animation: slideOutToast 0.3s ease forwards;
}

.toast-item .toast-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.toast-item .toast-body h6 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 2px;
}

.toast-item .toast-body p {
    font-size: 11px;
    color: var(--text-muted);
    margin: 0;
}

.toast-item .toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    margin-left: auto;
    font-size: 14px;
}

.toast-item.warning {
    border-left: 3px solid var(--color-warning);
}

.toast-item.danger {
    border-left: 3px solid var(--color-danger);
}

.toast-item.safe {
    border-left: 3px solid var(--color-safe);
}

.toast-item.info {
    border-left: 3px solid var(--color-info);
}

@keyframes slideInToast {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutToast {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ============================================
   LOADING SKELETON
   ============================================ */
.skeleton {
    background: linear-gradient(90deg,
        var(--bg-card) 25%,
        rgba(148, 163, 184, 0.08) 50%,
        var(--bg-card) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius-xs);
}

.skeleton-text {
    height: 14px;
    margin-bottom: 8px;
}

.skeleton-value {
    height: 32px;
    width: 100px;
}

.skeleton-circle {
    width: 44px;
    height: 44px;
    border-radius: 12px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination-custom {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 20px;
}

.pagination-custom .page-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    color: var(--text-secondary);
    border-radius: var(--border-radius-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-fast);
    font-family: 'Inter', sans-serif;
}

.pagination-custom .page-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.pagination-custom .page-btn.active {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 8px var(--accent-primary-glow);
}

.pagination-custom .page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ============================================
   SETTINGS PAGE
   ============================================ */
.settings-group {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 20px;
}

.settings-group h5 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.settings-group p {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
}

.setting-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.setting-row .setting-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-accent);
}

.setting-row .setting-sublabel {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    transition: all var(--transition-normal);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 2px;
    bottom: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background: #fff;
}

/* ============================================
   MOBILE SIDEBAR OVERLAY
   ============================================ */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1040;
    backdrop-filter: blur(4px);
}

.sidebar-overlay.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 22px;
    cursor: pointer;
    padding: 4px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ============================================
   LOCATION PAGE - FULL MAP
   ============================================ */
.map-fullscreen {
    height: calc(100vh - var(--header-height) - 200px);
    min-height: 500px;
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.map-fullscreen #mapLocation {
    height: 100%;
    width: 100%;
}

.location-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 18px 22px;
    display: flex;
    align-items: center;
    gap: 14px;
}

.location-info-card .loc-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.location-info-card .loc-text h6 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 2px;
}

.location-info-card .loc-text p {
    font-size: 11px;
    color: var(--text-muted);
    margin: 0;
}

/* ============================================
   FILTER BAR
   ============================================ */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.filter-bar .search-box {
    position: relative;
    flex: 1;
    min-width: 200px;
}

.filter-bar .search-box input {
    width: 100%;
    padding-left: 38px;
}

.filter-bar .search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state h5 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.empty-state p {
    font-size: 13px;
}

/* ============================================
   CONNECTION STATUS CARDS
   ============================================ */
.conn-status-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
}

.conn-status-card .conn-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.conn-status-card .conn-dot.online {
    background: var(--color-safe);
    box-shadow: 0 0 10px var(--color-safe);
    animation: pulse-dot 2s infinite;
}

.conn-status-card .conn-dot.offline {
    background: var(--color-danger);
    box-shadow: 0 0 10px var(--color-danger);
}

.conn-status-card .conn-info h6 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.conn-status-card .conn-info span {
    font-size: 10px;
    color: var(--text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1200px) {
    .sensor-card .card-value {
        font-size: 24px;
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .sidebar.collapsed {
        width: var(--sidebar-width);
    }

    .main-content {
        margin-left: 0 !important;
    }

    .mobile-toggle {
        display: block;
    }

    .main-header {
        padding: 0 16px;
    }

    .page-content {
        padding: 16px;
    }

    .header-status span {
        display: none;
    }

    .header-status {
        padding: 6px 10px;
    }
}

@media (max-width: 768px) {
    .filter-bar {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 10px !important;
        flex-direction: unset;
    }

    .filter-bar .search-box {
        grid-column: span 2 !important;
        width: 100% !important;
    }

    .filter-bar #locationDate {
        grid-column: span 2 !important;
    }

    .filter-bar select,
    .filter-bar input[type="date"],
    .filter-bar button,
    .filter-bar a.btn-accent,
    .filter-bar a.btn-glass {
        width: 100% !important;
        min-width: 0 !important;
        justify-content: center !important;
    }

    .header-title {
        font-size: 14px;
    }

    .map-container {
        height: 280px;
    }

    .map-fullscreen {
        height: 400px;
        min-height: 300px;
    }

    .chart-container {
        height: 220px;
    }

    /* Map Controls Bar */
    .map-controls-bar {
        flex-direction: column !important;
        align-items: stretch !important;
    }
    .map-controls-left, 
    .map-controls-right {
        flex-direction: column !important;
        align-items: stretch !important;
        width: 100% !important;
    }
    .map-controls-bar button,
    .map-controls-bar a {
        width: 100% !important;
        justify-content: center !important;
    }
}

@media (max-width: 576px) {
    .page-content {
        padding: 12px;
    }

    .sensor-card {
        padding: 16px;
    }

    .sensor-card .card-value {
        font-size: 22px;
    }

    .glass-panel .panel-header {
        padding: 14px 16px;
    }

    .glass-panel .panel-body {
        padding: 16px;
    }

    .toast-item {
        min-width: auto;
        max-width: calc(100vw - 40px);
    }

    .notification-item:hover {
        margin: 0 -16px !important;
        padding: 14px 16px !important;
    }

    /* Settings Button mobile optimization */
    .btn-header span {
        display: none !important;
    }
    
    .btn-header {
        padding: 0 !important;
        width: 36px !important;
        height: 36px !important;
        justify-content: center !important;
        border-radius: 50% !important;
    }

    /* Setting Rows */
    .setting-row {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 10px !important;
    }
    
    .setting-row .d-flex {
        width: 100% !important;
    }
    
    .setting-row .d-flex input {
        flex: 1 !important;
        width: 100% !important;
    }
    
    .setting-row .toggle-switch {
        align-self: flex-start !important;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-safe { color: var(--color-safe) !important; }
.text-warning-custom { color: var(--color-warning) !important; }
.text-danger-custom { color: var(--color-danger) !important; }
.text-info-custom { color: var(--color-info) !important; }
.text-muted-custom { color: var(--text-muted) !important; }

.bg-safe-subtle { background: var(--color-safe-bg) !important; }
.bg-warning-subtle { background: var(--color-warning-bg) !important; }
.bg-danger-subtle { background: var(--color-danger-bg) !important; }

.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }

.animate-fade-in {
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .sidebar,
    .main-header,
    .sidebar-overlay,
    .toast-container,
    .btn-glass,
    .btn-accent {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .sensor-card,
    .glass-panel {
        background: #fff;
        border: 1px solid #ddd;
        color: #000;
    }
}