/* ============================================
   ZIRAN Dashboard - Professional Design System
   ============================================ */

/* CSS Variables - Corporate Palette */
:root {
    /* Brand Colors from Logo */
    --color-primary: #1e3a8a;
    /* Deep professional blue */
    --color-primary-light: #3b82f6;
    /* Bright blue accent */
    --color-primary-dark: #1e293b;
    /* Almost black blue */

    /* Neutral Professional Palette */
    --color-bg-main: #f8fafc;
    /* Soft white background */
    --color-bg-card: #ffffff;
    /* Pure white cards */
    --color-bg-secondary: #f1f5f9;
    /* Light gray background */

    /* Text Colors */
    --color-text-primary: #0f172a;
    /* Almost black */
    --color-text-secondary: #475569;
    /* Medium gray */
    --color-text-muted: #64748b;
    /* Light gray */

    /* Accent Colors */
    --color-success: #059669;
    /* Professional green */
    --color-danger: #dc2626;
    /* Professional red */
    --color-warning: #d97706;
    /* Professional orange */
    --color-info: #0284c7;
    /* Professional cyan */

    /* Borders & Shadows */
    --color-border: #e2e8f0;
    --color-border-dark: #cbd5e1;

    /* Shadows - Subtle & Professional */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* Border Radius - More Conservative */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    /* Transitions */
    --transition: 200ms ease-in-out;
}

/* ============================================
   Base Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Loading Overlay
   ============================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition);
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
    margin-top: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    font-weight: 500;
}

/* ============================================
   Container & Layout
   ============================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* ============================================
   Header
   ============================================ */

.header {
    margin-bottom: var(--spacing-2xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
}

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

.logo {
    height: 50px;
    width: auto;
    border-radius: var(--radius-sm);
}

.header-text h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    font-weight: 500;
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.btn-icon:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

/* ============================================
   Filters Section
   ============================================ */

.filters-section {
    margin-bottom: var(--spacing-xl);
}

.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.filter-group {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-select {
    padding: 0.625rem var(--spacing-md);
    background: var(--color-bg-main);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition);
}

.filter-select:hover {
    border-color: var(--color-primary-light);
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.btn-secondary {
    padding: 0.625rem var(--spacing-lg);
    background: var(--color-bg-main);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-secondary:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-border-dark);
}

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

.tabs-section {
    margin-bottom: var(--spacing-xl);
}

.tabs-nav {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem var(--spacing-lg);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition);
}

.tab-btn svg {
    width: 20px;
    height: 20px;
}

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

.tab-btn.active {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================
   KPIs Section
   ============================================ */

.kpis-section {
    margin-bottom: var(--spacing-2xl);
}

.kpis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.kpi-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.kpi-success {
    border-left: 4px solid var(--color-success);
}

.kpi-danger {
    border-left: 4px solid var(--color-danger);
}

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

.kpi-icon svg {
    color: white;
}

.kpi-content {
    flex: 1;
}

.kpi-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.kpi-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-xs);
}

.kpi-unit {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

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

.charts-section {
    margin-bottom: var(--spacing-2xl);
}

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

.chart-card {
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.chart-card-wide {
    grid-column: span 2;
}

.chart-header {
    margin-bottom: var(--spacing-lg);
}

.chart-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.chart-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.chart-container {
    position: relative;
    height: 320px;
}

/* ============================================
   Insights Section
   ============================================ */

.insights-section {
    margin-bottom: var(--spacing-2xl);
}

.insights-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.insight-card {
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.insight-card.insight-positive {
    border-left: 4px solid var(--color-success);
}

.insight-card.insight-warning {
    border-left: 4px solid var(--color-warning);
}

.insight-card.insight-danger {
    border-left: 4px solid var(--color-danger);
}

.tab-btn svg {
    width: 20px;
    height: 20px;
}

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

.tab-btn.active {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================
   KPIs Section
   ============================================ */

.kpis-section {
    margin-bottom: var(--spacing-2xl);
}

.kpis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.kpi-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.kpi-success {
    border-left: 4px solid var(--color-success);
}

.kpi-danger {
    border-left: 4px solid var(--color-danger);
}

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

.kpi-icon svg {
    color: white;
}

.kpi-content {
    flex: 1;
}

.kpi-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.kpi-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-xs);
}

.kpi-unit {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

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

.charts-section {
    margin-bottom: var(--spacing-2xl);
}

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

.chart-card {
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.chart-card-wide {
    grid-column: span 2;
}

.chart-header {
    margin-bottom: var(--spacing-lg);
}

.chart-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.chart-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.chart-container {
    position: relative;
    height: 320px;
}

/* ============================================
   Insights Section
   ============================================ */

.insights-section {
    margin-bottom: var(--spacing-2xl);
}

.insights-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.insight-card {
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

.insight-card.insight-positive {
    border-left: 4px solid var(--color-success);
}

.insight-card.insight-warning {
    border-left: 4px solid var(--color-warning);
}

.insight-card.insight-danger {
    border-left: 4px solid var(--color-danger);
}

.insight-card.insight-info {
    border-left: 4px solid var(--color-info);
}

.insight-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.insight-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.insight-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }

    .chart-card-wide {
        grid-column: span 1;
    }
}

@media (max-width: 992px) {
    .kpis-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-container {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .logo-section {
        flex-direction: column;
    }

    .header-text h1 {
        font-size: var(--font-size-xl);
    }

    .kpis-grid {
        grid-template-columns: 1fr;
    }

    .filters-container {
        flex-direction: column;
    }

    .filter-group {
        min-width: 100%;
    }

    .tabs-nav {
        flex-direction: column;
    }

    .chart-container {
        height: 280px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--spacing-sm);
    }

    .header-text h1 {
        font-size: var(--font-size-lg);
    }

    .kpi-value {
        font-size: var(--font-size-2xl);
    }

    .chart-container {
        height: 250px;
    }

    .kpi-card {
        padding: var(--spacing-md);
    }
}

/* ============================================
   Driver Performance Table
   ============================================ */

.performance-table-section {
    margin-bottom: var(--spacing-2xl);
}

.performance-table-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.table-container {
    overflow-x: auto;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.driver-performance-table {
    width: 100%;
    border-collapse: collapse;
}

.driver-performance-table thead {
    background: var(--color-bg-secondary);
}

.driver-performance-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

.driver-performance-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-primary);
    white-space: nowrap;
}

.driver-performance-table tbody tr:hover {
    background: var(--color-bg-secondary);
    transition: background var(--transition);
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    white-space: nowrap;
}

.status-above {
    background: rgba(5, 150, 105, 0.1);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.status-warning {
    background: rgba(217, 119, 6, 0.1);
    color: var(--color-warning);
    border: 1px solid var(--color-warning);
}

.status-below {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

@media (max-width: 768px) {
    .driver-performance-table {
        font-size: var(--font-size-sm);
    }

    .driver-performance-table th,
    .driver-performance-table td {
        padding: var(--spacing-sm);
    }
}