/* ===================================
   F1 Pit Strategy Optimizer - Dashboard CSS
   =================================== */

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

:root {
    /* Colors */
    --primary: #e10600;
    --primary-dark: #b10500;
    --secondary: #f39c12;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    
    /* Neutrals */
    --bg-dark: #0f0f0f;
    --bg-darker: #0a0a0a;
    --bg-card: #1a1a1a;
    --bg-hover: #252525;
    --border: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #999999;
    --text-muted: #666666;
    
    /* Spacing */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ===================================
   Dashboard Layout
   =================================== */

.dashboard {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

/* ===================================
   Sidebar
   =================================== */

.sidebar {
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}

.logo {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.logo h1 {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
    color: var(--primary);
}

.logo p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.nav-menu {
    flex: 1;
    padding: var(--space-md);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    margin-bottom: var(--space-xs);
}

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

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

.nav-item .icon {
    font-size: 1.25rem;
}

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

.api-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

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

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

/* ===================================
   Main Content
   =================================== */

.main-content {
    background: var(--bg-dark);
    overflow-y: auto;
    height: 100vh;
}

/* Header */
.header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.page-title {
    font-size: 1.75rem;
    margin-bottom: var(--space-xs);
}

.page-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.model-switch {
    display: flex;
    gap: var(--space-xs);
    background: var(--bg-dark);
    padding: 4px;
    border-radius: var(--radius-md);
}

.switch-btn {
    padding: var(--space-sm) var(--space-md);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s;
}

.switch-btn:hover {
    color: var(--text-primary);
}

.switch-btn.active {
    background: var(--primary);
    color: white;
}

/* ===================================
   Dashboard Grid
   =================================== */

.dashboard-grid {
    padding: var(--space-lg);
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-lg);
}

/* Card Layouts */
.prediction-card {
    grid-column: span 4;
}

.chart-card {
    grid-column: span 8;
}

.form-card {
    grid-column: span 8;
}

.metrics-card {
    grid-column: span 4;
}

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

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

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

.card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.badge {
    padding: 4px 12px;
    background: var(--primary);
    color: white;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

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

/* ===================================
   Prediction Display
   =================================== */

.prediction-placeholder {
    text-align: center;
    padding: var(--space-xl) 0;
    color: var(--text-secondary);
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.prediction-result {
    text-align: center;
}

.prediction-value {
    font-size: 5rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.prediction-label {
    font-size: 1rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.prediction-meta {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
}

.meta-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-size: 0.875rem;
}

.meta-label {
    color: var(--text-secondary);
}

.meta-value {
    color: var(--text-primary);
    font-weight: 600;
}

.confidence-bar {
    height: 8px;
    background: var(--bg-dark);
    border-radius: 100px;
    overflow: hidden;
    margin: var(--space-md) 0;
}

.confidence-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success) 0%, var(--primary) 100%);
    transition: width 0.5s ease;
}

/* ===================================
   Form Styles
   =================================== */

.prediction-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-section h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-darker);
}

.form-group input:hover,
.form-group select:hover {
    border-color: var(--text-muted);
}

/* Submit Button */
.submit-btn {
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.submit-btn.loading .btn-text {
    opacity: 0;
}

.submit-btn.loading .btn-loader {
    display: block;
}

.btn-loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

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

canvas {
    max-height: 300px;
}

/* ===================================
   Toast Notifications
   =================================== */

.toast {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    pointer-events: none;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.toast.error-toast {
    border-left: 4px solid var(--danger);
}

.toast-icon {
    font-size: 1.25rem;
}

.toast-message {
    color: var(--text-primary);
}

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

@media (max-width: 1200px) {
    .prediction-card,
    .chart-card,
    .form-card,
    .metrics-card {
        grid-column: span 12;
    }
}

@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Animations
   =================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.3s ease;
}