/* Enhanced Business Intelligence Upload Interface Styles */

/* Enhanced CSS Variables */
:root {
    /* Enhanced Color Palette */
    --primary-color: #1a73e8;
    --primary-hover: #1557b0;
    --primary-light: #e8f0fe;
    --primary-dark: #0d47a1;
    
    --success-color: #137333;
    --success-light: #e6f4ea;
    --success-dark: #0d5016;
    
    --warning-color: #f29900;
    --warning-light: #fef7e0;
    --warning-dark: #b8680c;
    
    --error-color: #d93025;
    --error-light: #fce8e6;
    --error-dark: #a50e0e;
    
    --info-color: #1a73e8;
    --info-light: #e8f0fe;
    
    /* Enhanced Neutrals */
    --surface-color: #ffffff;
    --surface-variant: #f8f9fa;
    --background-color: #f8f9fa;
    --background-secondary: #f1f3f4;
    --border-color: #dadce0;
    --border-light: #e8eaed;
    --divider-color: #e8eaed;
    
    /* Enhanced Text Colors */
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --text-tertiary: #80868b;
    --text-disabled: #9aa0a6;
    --text-inverse: #ffffff;
    
    /* Enhanced Spacing System */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
    
    /* Enhanced Border Radius */
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-round: 50%;
    
    /* Enhanced Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(60,64,67,0.1);
    --shadow-sm: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
    --shadow-md: 0 1px 2px 0 rgba(60,64,67,0.3), 0 2px 6px 2px rgba(60,64,67,0.15);
    --shadow-lg: 0 4px 8px 3px rgba(60,64,67,0.15), 0 1px 3px rgba(60,64,67,0.3);
    --shadow-xl: 0 10px 25px rgba(60,64,67,0.2);
    
    /* Enhanced Typography */
    --font-family: 'Google Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --text-xs: 11px;
    --text-sm: 12px;
    --text-base: 13px;
    --text-md: 14px;
    --text-lg: 16px;
    --text-xl: 18px;
    --text-2xl: 20px;
    --text-3xl: 24px;
    
    /* Enhanced Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.35s ease;
    
    /* Enhanced Z-index */
    --z-dropdown: 1000;
    --z-modal: 1100;
    --z-toast: 1200;
    --z-tooltip: 1300;
}

/* Base Styles */
body.upload-page {
    font-family: var(--font-family);
    background-color: var(--background-color);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--text-primary);
}

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

/* Enhanced Header */
.upload-header {
    background: linear-gradient(135deg, var(--surface-color) 0%, var(--surface-variant) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.upload-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color), var(--warning-color));
}

.header-content {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.upload-header h1 {
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.expected-outcomes {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-xl);
}

.outcome-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition-normal);
}

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

.outcome-value {
    display: block;
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

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

/* Enhanced Progress Steps */
.progress-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    padding: var(--spacing-lg) 0;
}

.progress-steps::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--border-color);
    transform: translateY(-50%);
    z-index: 1;
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--surface-color);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 2px solid var(--border-color);
    position: relative;
    z-index: 2;
    transition: all var(--transition-normal);
    min-width: 200px;
}

.step.active {
    border-color: var(--primary-color);
    background: var(--primary-light);
    transform: scale(1.05);
}

.step.completed {
    border-color: var(--success-color);
    background: var(--success-light);
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-round);
    background: var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.step.active .step-number {
    background: var(--primary-color);
    color: var(--text-inverse);
}

.step.completed .step-number {
    background: var(--success-color);
    color: var(--text-inverse);
}

.step-title {
    font-weight: 500;
    color: var(--text-primary);
    font-size: var(--text-md);
}

.step-subtitle {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

/* Enhanced Industry Selection */
.industry-categories {
    margin-bottom: var(--spacing-2xl);
}

.category-group {
    margin-bottom: var(--spacing-2xl);
}

.category-group h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-xl);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge.enhanced {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-inverse);
}

.badge.standard {
    background: var(--border-color);
    color: var(--text-secondary);
}

/* Enhanced Industry Cards */
.industry-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.enhanced-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.standard-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.industry-card {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.industry-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.industry-card:hover::before {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
}

.industry-card.enhanced {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--surface-color) 0%, var(--primary-light) 100%);
}

.industry-card.enhanced::before {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
}

.industry-card.selected {
    border-color: var(--primary-color);
    background: var(--primary-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.industry-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.industry-details h3 {
    font-size: var(--text-xl);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.industry-details p {
    font-size: var(--text-md);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.4;
}

.industry-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.feature {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--surface-variant);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    font-weight: 500;
}

.industry-metrics {
    display: flex;
    gap: var(--spacing-lg);
}

.metric {
    text-align: center;
}

.metric-value {
    display: block;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--primary-color);
}

.metric-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.selection-indicator {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 24px;
    height: 24px;
    border-radius: var(--radius-round);
    background: var(--success-color);
    color: var(--text-inverse);
    display: none;
    align-items: center;
    justify-content: center;
}

.industry-card.selected .selection-indicator {
    display: flex;
}

/* Enhanced Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    background: var(--surface-color);
    color: var(--text-primary);
    font-size: var(--text-md);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

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

.btn.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-inverse);
    border-color: var(--primary-color);
}

.btn.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    box-shadow: var(--shadow-lg);
}

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

.btn.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--text-lg);
    flex-direction: column;
    text-align: center;
}

.btn-subtitle {
    font-size: var(--text-sm);
    opacity: 0.8;
    font-weight: 400;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

.btn i.material-icons {
    font-size: 18px;
}

/* Animation keyframes */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

.slide-in {
    animation: slideIn var(--transition-normal) ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .upload-container {
        padding: var(--spacing-lg);
    }
    
    .progress-steps {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .progress-steps::before {
        display: none;
    }
    
    .step {
        min-width: auto;
        width: 100%;
    }
    
    .expected-outcomes {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .industry-grid {
        grid-template-columns: 1fr;
    }
    
    .enhanced-grid,
    .standard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .upload-header {
        padding: var(--spacing-lg);
    }
    
    .upload-header h1 {
        font-size: var(--text-xl);
    }
    
    .industry-card {
        padding: var(--spacing-lg);
    }
    
    .industry-icon {
        font-size: 32px;
    }
}