/* ============================================
   M-Predictor Dashboard Styles
   Professional Industrial IoT Dashboard
   ============================================ */

/* CSS Variables */
:root {
    /* Colors - Dark Industrial Theme */
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f2e;
    --bg-tertiary: #242b3d;
    --bg-card: #1e2536;

    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-muted: #718096;

    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-yellow: #f59e0b;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;

    /* Chart Colors */
    --chart-x: #ef4444;
    --chart-y: #10b981;
    --chart-z: #3b82f6;
    --chart-mag: #f59e0b;
    --chart-delta: #8b5cf6;

    /* Borders */
    --border-color: #2d3748;
    --border-light: #4a5568;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;

    /* Layout */
    --header-height: 64px;
    --sidebar-width: 320px;
}

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

html {
    font-size: 16px;
    -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;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-left, .header-right {
    flex: 1;
}

.header-right {
    text-align: right;
}

.header-center {
    flex: 0 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-blue);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
}

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

.connection-status.connected .status-dot {
    background: var(--accent-green);
    animation: none;
}

.connection-status.error .status-dot {
    background: var(--accent-red);
    animation: none;
}

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

.datetime {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

/* ============================================
   Main Layout
   ============================================ */
.main-content {
    display: flex;
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

/* ============================================
   Sidebar - Alerts
   ============================================ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: var(--header-height);
    bottom: 0;
    z-index: 50;
}

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

.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.alert-count {
    background: var(--accent-red);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-lg);
    min-width: 24px;
    text-align: center;
}

.alert-count:empty,
.alert-count[data-count="0"] {
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

.alerts-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.no-alerts {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
    gap: var(--spacing-sm);
}

.no-alerts svg {
    width: 48px;
    height: 48px;
    opacity: 0.5;
}

.alert-item {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-left: 3px solid var(--accent-red);
    animation: slideIn 0.3s ease;
}

.alert-item.warning {
    border-left-color: var(--accent-yellow);
}

.alert-item.critical {
    border-left-color: var(--accent-red);
    background: rgba(239, 68, 68, 0.1);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.alert-message {
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.alert-value {
    font-size: 0.75rem;
    color: var(--accent-yellow);
    font-weight: 500;
}

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

/* ============================================
   Dashboard Content
   ============================================ */
.dashboard {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--spacing-lg);
    overflow-y: auto;
}

/* ============================================
   Stats Cards
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 28px;
    height: 28px;
}

.stat-icon.magnitude {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-yellow);
}

.stat-icon.delta {
    background: rgba(139, 92, 246, 0.15);
    color: var(--accent-purple);
}

.stat-icon.status {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.stat-icon.status.vibrating {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
    animation: vibrate 0.3s infinite;
}

@keyframes vibrate {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}

.stat-icon.sensor {
    background: rgba(6, 182, 212, 0.15);
    color: var(--accent-cyan);
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.stat-unit {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-left: var(--spacing-xs);
}

/* ============================================
   Charts Section
   ============================================ */
.charts-section {
    margin-bottom: var(--spacing-lg);
}

.chart-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.chart-large {
    margin-bottom: var(--spacing-md);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.chart-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-body {
    padding: var(--spacing-md);
    height: 300px;
    position: relative;
}

.chart-large .chart-body {
    height: 350px;
}

.charts-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.chart-medium .chart-body {
    height: 250px;
}

/* ============================================
   Data Table
   ============================================ */
.data-section {
    margin-bottom: var(--spacing-lg);
}

.table-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.table-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
}

.table-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.table-body {
    max-height: 300px;
    overflow-y: auto;
}

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

thead {
    position: sticky;
    top: 0;
    background: var(--bg-tertiary);
    z-index: 10;
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-size: 0.8125rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.6875rem;
    letter-spacing: 0.05em;
}

td {
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

tbody tr:hover {
    background: var(--bg-tertiary);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.stable {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.status-badge.vibrating {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background: #2563eb;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
}

.btn-icon:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
}

.btn-block {
    width: 100%;
    white-space: nowrap;
}

.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ============================================
   Form Controls
   ============================================ */
.select-control {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
}

.select-control:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.form-control {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   Modal
   ============================================ */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 480px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

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

.modal-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
}

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

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

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
}

.toast.error {
    border-left: 3px solid var(--accent-red);
}

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

.toast.success {
    border-left: 3px solid var(--accent-green);
}

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

.toast-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    font-size: 0.875rem;
}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1400px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1200px) {
    .sidebar {
        width: 280px;
    }

    .dashboard {
        margin-left: 280px;
    }
}

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

    .sidebar.open {
        transform: translateX(0);
    }

    .dashboard {
        margin-left: 0;
    }

    .charts-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .header {
        padding: 0 var(--spacing-md);
    }

    .logo-text {
        display: none;
    }

    .datetime {
        display: none;
    }
}