/* ============================================
   LABTEMP MONITOR - PREMIUM STYLESHEET
   ============================================ */

/* Root Variables */
:root {
    /* Light Theme */
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f8f9fa;
    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);
    
    /* Colors */
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #a3bffa;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
    --gradient-warning: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
    --gradient-danger: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-cool: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #475569;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    transition: background var(--transition-normal), color var(--transition-normal);
}

/* ============================================
   LOADING SCREEN
   ============================================ */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
}

.loader-circle {
    width: 60px;
    height: 60px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loader-text {
    font-size: 1.1em;
    color: var(--text-secondary);
    animation: pulse-text 1.5s ease-in-out infinite;
}

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

@keyframes pulse-text {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

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

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    font-size: 2em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: thermometer-pulse 2s ease-in-out infinite;
}

@keyframes thermometer-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.logo-text {
    font-size: 1.5em;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar.collapsed .logo-text {
    display: none;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2em;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
    transform: scaleY(0);
    transition: transform var(--transition-fast);
}

.nav-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.nav-item.active::before {
    transform: scaleY(1);
}

.nav-item i {
    font-size: 1.2em;
    min-width: 24px;
    text-align: center;
}

.sidebar.collapsed .nav-item span {
    display: none;
}

.badge {
    background: var(--danger);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: 600;
    margin-left: auto;
    animation: badge-pulse 2s infinite;
}

@keyframes badge-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.system-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    font-size: 0.9em;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: status-pulse 2s infinite;
}

@keyframes status-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
}

.current-time {
    padding: 8px 12px;
    font-size: 0.85em;
    color: var(--text-muted);
}

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

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

/* Top Bar */
.top-bar {
    background: var(--bg-secondary);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.3em;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.menu-toggle:hover {
    background: var(--bg-tertiary);
}

.breadcrumb {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--text-primary);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.quick-stats {
    background: var(--bg-tertiary);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9em;
    color: var(--text-secondary);
}

.quick-stats i {
    color: var(--primary);
    margin-right: 8px;
}

.theme-toggle,
.refresh-btn {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-primary);
    font-size: 1.1em;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover,
.refresh-btn:hover {
    background: var(--primary);
    color: white;
    transform: rotate(180deg);
}

.refresh-btn:hover {
    transform: rotate(360deg);
}

.connection-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
    font-size: 0.85em;
    color: var(--text-secondary);
}

.pulse-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--success);
    animation: status-pulse 2s infinite;
}

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

.section {
    display: none;
    animation: fadeInUp 0.5s ease;
}

.section.active {
    display: block;
}

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

/* ============================================
   STATS CARDS
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    opacity: 0.05;
    border-radius: 50%;
    transform: translate(30px, -30px);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    color: white;
    flex-shrink: 0;
}

.stat-info h3 {
    font-size: 2em;
    font-weight: 700;
    margin-bottom: 4px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* ============================================
   CHART CARDS
   ============================================ */
.chart-card {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 24px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.chart-header h2 {
    font-size: 1.2em;
    font-weight: 600;
}

.chart-legend {
    display: flex;
    gap: 16px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85em;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* ============================================
   ROOM CARDS
   ============================================ */
.room-overview {
    margin-top: 24px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 1.3em;
    font-weight: 600;
}

.view-toggle {
    display: flex;
    gap: 8px;
    background: var(--bg-tertiary);
    padding: 4px;
    border-radius: var(--radius-md);
}

.view-btn {
    background: none;
    border: none;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-btn.active {
    background: var(--bg-secondary);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.room-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.room-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
}

.room-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    transition: all var(--transition-normal);
}

.room-card.normal::before {
    background: var(--gradient-success);
}

.room-card.warning::before {
    background: var(--gradient-warning);
}

.room-card.danger::before {
    background: var(--gradient-danger);
}

.room-card.no-data::before {
    background: var(--gradient-cool);
}

.room-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.room-card.normal {
    animation: normal-glow 3s ease-in-out infinite;
}

@keyframes normal-glow {
    0%, 100% { box-shadow: var(--shadow-md); }
    50% { box-shadow: 0 4px 20px rgba(16, 185, 129, 0.2); }
}

.room-card.danger {
    animation: danger-shake 0.5s ease-in-out infinite;
}

@keyframes danger-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.room-info h3 {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 4px;
}

.room-location {
    font-size: 0.85em;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.room-status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    animation: status-pulse 2s infinite;
}

.room-status-indicator.normal {
    background: var(--success);
}

.room-status-indicator.warning {
    background: var(--warning);
}

.room-status-indicator.danger {
    background: var(--danger);
}

.temperature-display {
    text-align: center;
    padding: 20px 0;
    position: relative;
}

.temperature-value {
    font-size: 3.5em;
    font-weight: 700;
    line-height: 1;
    transition: all var(--transition-normal);
}

.temperature-value.normal {
    color: var(--success);
}

.temperature-value.warning {
    color: var(--warning);
}

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

.temperature-unit {
    font-size: 0.4em;
    font-weight: 500;
    color: var(--text-secondary);
}

.temperature-icon {
    font-size: 2em;
    margin-top: 8px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.humidity-bar {
    background: var(--bg-tertiary);
    border-radius: 10px;
    height: 8px;
    margin: 16px 0;
    overflow: hidden;
}

.humidity-fill {
    height: 100%;
    border-radius: 10px;
    background: var(--gradient-cool);
    transition: width var(--transition-normal);
}

.room-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.85em;
    color: var(--text-secondary);
}

/* ============================================
   MONITORING DETAILED VIEW
   ============================================ */
.detailed-grid {
    display: grid;
    gap: 20px;
}

.detailed-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 20px;
    align-items: center;
    transition: all var(--transition-normal);
}

.detailed-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   ALERTS
   ============================================ */
.alerts-list {
    display: grid;
    gap: 12px;
}

.alert-item {
    background: var(--bg-secondary);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    animation: slideInLeft 0.3s ease;
}

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

.alert-item.warning {
    border-left: 4px solid var(--warning);
}

.alert-item.danger {
    border-left: 4px solid var(--danger);
}

.alert-item.critical {
    border-left: 4px solid #dc2626;
    animation: critical-alert 1s ease-in-out infinite;
}

@keyframes critical-alert {
    0%, 100% { background: var(--bg-secondary); }
    50% { background: rgba(239, 68, 68, 0.1); }
}

.alert-icon {
    font-size: 1.5em;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.alert-item.warning .alert-icon {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.alert-item.danger .alert-icon {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.alert-item.critical .alert-icon {
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
}

.alert-content {
    flex: 1;
}

.alert-message {
    font-weight: 500;
    margin-bottom: 4px;
}

.alert-time {
    font-size: 0.85em;
    color: var(--text-muted);
}

.alert-action {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.alert-action:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ============================================
   SETTINGS
   ============================================ */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.setting-card {
    background: var(--bg-secondary);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.setting-card h3 {
    margin-bottom: 20px;
    font-size: 1.1em;
    font-weight: 600;
}

.setting-item {
    margin-bottom: 16px;
}

.setting-item label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.setting-input {
    width: 100%;
    padding: 10px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 1em;
    transition: all var(--transition-fast);
}

.setting-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Buttons */
.btn-primary {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95em;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

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

/* Filter Select */
.filter-select {
    padding: 10px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.95em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: var(--bg-secondary);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    animation: slideInRight 0.3s ease, slideOutRight 0.3s ease 2.7s forwards;
    border-left: 4px solid var(--primary);
}

.toast.warning {
    border-left-color: var(--warning);
}

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

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

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

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .sidebar {
        width: var(--sidebar-collapsed);
    }
    
    .sidebar .logo-text,
    .sidebar .nav-item span,
    .sidebar .badge,
    .sidebar-footer {
        display: none;
    }
    
    .main-content {
        margin-left: var(--sidebar-collapsed);
    }
    
    .room-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .sidebar .logo-text,
    .sidebar .nav-item span,
    .sidebar .badge,
    .sidebar-footer {
        display: flex;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .sidebar.collapsed + .main-content {
        margin-left: 0;
    }
    
    .top-bar {
        padding: 12px 16px;
    }
    
    .page-content {
        padding: 16px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .room-grid {
        grid-template-columns: 1fr;
    }
    
    .detailed-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-header {
        flex-direction: column;
        gap: 12px;
    }
}