/* CNC Toolpath Optimizer Page - Site-Consistent Professional Styling */
/* Enhanced user experience with consistent blue design theme matching site-wide standards */

:root {
    /* Site-Wide Blue Color System (Matching main.css) */
    --primary-blue: #007AFF;
    --secondary-blue: #5AC8FA;
    --accent-blue: #0056CC;
    --light-blue: #E3F2FD;
    --dark-blue: #1565C0;
    
    /* Neutral Supporting Colors */
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #E0E0E0;
    --gray-300: #BDBDBD;
    --gray-500: #757575;
    --gray-700: #424242;
    --gray-900: #212121;
    
    /* System Colors */
    --background-white: #FFFFFF;
    --text-primary: #212121;
    --text-secondary: #757575;
    --success-color: #4CAF50;
    --warning-color: #FF9800;
    --error-color: #F44336;
    
    /* Spacing (8px grid) */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Borders & Shadows */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-color: var(--gray-200);
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 10px 20px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease-out;
    --transition-smooth: 0.3s ease-in-out;
    
    /* Icon Colors (Site Standard) */
    --icon-primary: var(--primary-blue);
    --icon-secondary: var(--gray-500);
    --icon-cnc: var(--secondary-blue);
    --icon-precision: #9C27B0;
    --icon-success: var(--success-color);
    --icon-warning: var(--warning-color);
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-white);
    line-height: 1.6;
    color: var(--text-primary);
    font-weight: 400;
}

/* Main Layout */
.calculator-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 32px;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--accent-blue);
    text-decoration: underline;
}

.separator {
    margin: 0 var(--spacing-sm);
    color: var(--gray-300);
}

.current {
    color: var(--text-primary);
    font-weight: 500;
}

/* Site-Consistent Calculator Header */
.calculator-header {
    background: var(--gray-50);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xxl) var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
    text-align: left;
}

.header-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xxl);
}

.calculator-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 var(--spacing-md) 0;
    color: var(--text-primary);
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.calculator-title i {
    color: white;
    background: var(--primary-blue);
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-fast);
}

.calculator-title:hover i {
    background: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

.calculator-description {
    font-size: 1rem;
    margin: 0 0 var(--spacing-lg) 0;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 600px;
}

.calculator-badges {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.badge.precision {
    background: var(--success-color);
    color: white;
}

.badge.standard {
    background: var(--warning-color);
    color: white;
}

.badge:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

/* Calculator Sections */
.calculator-section {
    margin-bottom: var(--spacing-xxl);
}

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

.section-header h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.section-header h2::before {
    content: '';
    display: block;
    width: 4px;
    height: 2rem;
    background: var(--primary-blue);
    border-radius: 2px;
}

.section-header p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

/* Calculator Grid */
.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

.input-group {
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-fast);
}

.input-group:hover {
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-blue);
}

.input-group h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-lg) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.input-group h3::before {
    content: '';
    display: block;
    width: 3px;
    height: 1.25rem;
    background: var(--secondary-blue);
    border-radius: 2px;
}

/* Input Elements */
.input-row {
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.input-row-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.input-row label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.technical-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--background-white);
    transition: all var(--transition-fast);
    font-family: inherit;
    box-sizing: border-box;
}

.technical-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.technical-input:hover {
    border-color: var(--secondary-blue);
}

.input-unit {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-left: var(--spacing-sm);
}

/* Calculate Button */
.calculate-section {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--light-blue);
    border: 2px solid var(--primary-blue);
    box-shadow: var(--shadow-medium);
}

.calculate-btn {
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-lg) var(--spacing-xxl);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    font-family: inherit;
}

.calculate-btn:hover {
    background: var(--accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

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

/* Results Section */
.results-hidden {
    display: none;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.result-group {
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-fast);
}

.result-group:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.result-group h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.result-group h3::before {
    content: '';
    display: block;
    width: 3px;
    height: 1.125rem;
    background: var(--primary-blue);
    border-radius: 2px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

.result-row:last-child {
    border-bottom: none;
}

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

.result-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.efficiency-excellent {
    color: var(--success-color);
}

/* Warning Group */
.warning-group {
    border: 2px solid var(--warning-color);
    background: rgba(255, 152, 0, 0.05);
}

.warning-list {
    color: var(--warning-color);
    font-weight: 500;
}

/* Action Buttons */
.result-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.action-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: inherit;
}

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

.action-btn.primary:hover {
    background: var(--accent-blue);
    transform: translateY(-1px);
}

.action-btn.secondary {
    background: var(--background-white);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.action-btn.secondary:hover {
    background: var(--gray-50);
    border-color: var(--primary-blue);
    transform: translateY(-1px);
}

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

.recommendation-card {
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-light);
    transition: all var(--transition-fast);
}

.recommendation-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-blue);
}

.recommendation-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
}

.recommendation-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Enhanced FAQ Section */
.faq-container {
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-light);
}

.faq-item:hover {
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-blue);
}

.faq-item.active {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-medium);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: var(--spacing-lg);
    text-align: left;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
    line-height: 1.4;
    font-family: inherit;
}

.faq-question:hover {
    background: var(--gray-50);
}

.faq-question:focus {
    outline: none;
    background: var(--light-blue);
}

.faq-question i {
    color: var(--icon-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--spacing-md);
    width: 16px;
    height: 16px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--accent-blue);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    background: var(--gray-50);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

.faq-answer strong {
    color: var(--text-primary);
    font-weight: 600;
}

.faq-highlight {
    background: var(--warning-color);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
}

/* Related Tools */
.related-tools {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.tool-card {
    display: block;
    background: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-light);
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-blue);
    text-decoration: none;
}

.tool-card i {
    color: white;
    background: var(--primary-blue);
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-md);
}

.tool-card:hover i {
    transform: scale(1.05);
    background: var(--accent-blue);
}

.tool-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.tool-card p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    .recommendation-grid,
    .related-tools {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 900px) {
    .calculator-main {
        padding: 20px 16px;
    }
    
    .calculator-header {
        padding: var(--spacing-xl) var(--spacing-lg);
        margin-bottom: var(--spacing-xxl);
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xl);
    }
    
    .calculator-title {
        font-size: 2rem;
        flex-direction: column;
        text-align: center;
    }
    
    .calculator-title i {
        width: 64px;
        height: 64px;
        font-size: 1.5rem;
    }
    
    .calculator-description {
        font-size: 1rem;
        max-width: 100%;
        text-align: center;
    }
    
    .calculator-badges {
        justify-content: center;
    }
    
    .results-grid,
    .recommendation-grid,
    .related-tools {
        grid-template-columns: 1fr;
    }
    
    .input-row-group {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .action-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .calculator-header {
        padding: var(--spacing-lg) var(--spacing-md);
        margin-bottom: var(--spacing-xl);
    }
    
    .calculator-title {
        font-size: 1.75rem;
    }
    
    .calculator-description {
        font-size: 0.875rem;
    }
    
    .badge {
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .input-group {
        padding: var(--spacing-lg);
    }
    
    .faq-question {
        padding: var(--spacing-md);
        font-size: 1rem;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .faq-question i {
        align-self: flex-end;
        margin-left: 0;
    }
    
    .faq-answer p {
        padding: 0 var(--spacing-md) var(--spacing-md);
        font-size: 0.875rem;
    }
    
    .tool-card {
        padding: var(--spacing-lg);
    }
    
    .tool-card i {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}