/* Checkweigher Calculator Styles */
:root {
    /* Checkweigher Theme Colors - Blue/Indigo */
    --checkweigher-primary: #3b82f6;
    --checkweigher-secondary: #6366f1;
    --checkweigher-accent: #1e40af;
    --checkweigher-light: #dbeafe;
    --checkweigher-dark: #1e3a8a;
    --checkweigher-gradient: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    
    /* Base Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--checkweigher-light) 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Privacy Banner */
.privacy-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--gray-900);
    color: var(--white);
    padding: 1rem;
    z-index: 1000;
    transform: translateY(100%);
    transition: var(--transition);
}

.privacy-banner.show {
    transform: translateY(0);
}

.privacy-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    gap: 1rem;
}

.privacy-btn {
    background: var(--checkweigher-primary);
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.privacy-btn:hover {
    background: var(--checkweigher-accent);
}

/* Header */
.header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--checkweigher-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.logo i {
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--checkweigher-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--checkweigher-primary);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-700);
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    z-index: 200;
    padding: 2rem;
    flex-direction: column;
    gap: 2rem;
}

.mobile-link {
    text-decoration: none;
    color: var(--gray-700);
    font-size: 1.25rem;
    font-weight: 500;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-200);
}

/* Main Content */
.main-content {
    padding-bottom: 2rem;
}

/* Hero Section */
.hero-section {
    background: var(--checkweigher-gradient);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-description {
    font-size: 1.25rem;
    opacity: 0.95;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

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

.breadcrumb a:hover {
    color: var(--checkweigher-accent);
}

/* Statistics Section */
.stats-section {
    padding: 2rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

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

.stat-icon {
    width: 4rem;
    height: 4rem;
    background: var(--checkweigher-gradient);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--checkweigher-primary);
}

.stat-label {
    color: var(--gray-600);
    font-weight: 500;
}

/* Calculator Section */
.calculator-section {
    padding: 3rem 0;
}

.calculator-wrapper {
    background: var(--white);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

/* Tabs */
.tabs-container {
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.tabs-list {
    display: flex;
    overflow-x: auto;
    padding: 0.5rem;
    gap: 0.5rem;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
}

.tab-btn:hover {
    background: var(--gray-100);
    color: var(--checkweigher-primary);
}

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

.tab-btn i {
    font-size: 1rem;
}

/* Tab Content */
.tab-content {
    display: none;
    padding: 2rem;
}

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

/* Cards */
.card {
    background: var(--white);
    border-radius: 0.75rem;
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--checkweigher-primary);
    margin-bottom: 0.5rem;
}

.card-header p {
    color: var(--gray-600);
}

.card-body {
    padding: 2rem;
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--checkweigher-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Slider */
.slider-container {
    margin-top: 0.5rem;
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--gray-200);
    outline: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--checkweigher-primary);
    cursor: pointer;
    box-shadow: var(--shadow);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--checkweigher-primary);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* Buttons */
.btn-primary {
    background: var(--checkweigher-gradient);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow);
    width: 100%;
}

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

.btn-secondary {
    background: var(--white);
    color: var(--checkweigher-primary);
    border: 2px solid var(--checkweigher-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.btn-secondary:hover {
    background: var(--checkweigher-primary);
    color: var(--white);
}

.btn-info {
    background: var(--info);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.btn-info:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

.btn-success {
    background: var(--success);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
}

/* Processing Actions */
.processing-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

/* Results Actions */
.results-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Charts Actions */
.charts-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--gray-500);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--checkweigher-primary);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
}

/* Results */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.result-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.result-card:hover {
    border-color: var(--checkweigher-primary);
    box-shadow: var(--shadow);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.result-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--checkweigher-light);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--checkweigher-primary);
}

.result-title {
    font-weight: 600;
    color: var(--gray-700);
}

.result-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--checkweigher-primary);
    margin-bottom: 0.5rem;
}

.result-description {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.result-details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.detail-label {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.detail-value {
    font-weight: 600;
    color: var(--gray-900);
}

/* Export Buttons */
.export-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.export-btn {
    background: var(--white);
    color: var(--checkweigher-primary);
    border: 2px solid var(--checkweigher-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.export-btn:hover {
    background: var(--checkweigher-primary);
    color: var(--white);
}

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.chart-container {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--gray-200);
    position: relative;
    height: 400px;
}

.chart-container canvas {
    max-width: 100%;
    max-height: 100%;
}

/* Templates */
.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.template-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 2px solid var(--gray-200);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.template-card:hover {
    border-color: var(--checkweigher-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.template-icon {
    width: 4rem;
    height: 4rem;
    background: var(--checkweigher-gradient);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    margin: 0 auto 1rem;
}

.template-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--checkweigher-primary);
    margin-bottom: 0.5rem;
}

.template-card p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.template-specs {
    background: var(--checkweigher-light);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--checkweigher-accent);
    font-weight: 600;
}

/* History */
.history-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--gray-200);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.history-item:hover {
    border-color: var(--checkweigher-primary);
    box-shadow: var(--shadow);
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.history-date {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.history-actions {
    display: flex;
    gap: 0.5rem;
}

.history-btn {
    background: none;
    border: none;
    color: var(--checkweigher-primary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.25rem;
    transition: var(--transition);
}

.history-btn:hover {
    background: var(--checkweigher-light);
}

.history-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.history-metric {
    text-align: center;
}

.history-metric-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--checkweigher-primary);
}

.history-metric-label {
    font-size: 0.75rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* How It Works */
.how-it-works {
    padding: 4rem 0;
    background: var(--white);
}

.how-it-works h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--checkweigher-primary);
    margin-bottom: 3rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step-card {
    text-align: center;
    padding: 2rem;
    border-radius: 1rem;
    background: var(--gray-50);
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 4rem;
    height: 4rem;
    background: var(--checkweigher-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 auto 1.5rem;
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--checkweigher-primary);
    margin-bottom: 1rem;
}

.step-content p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Use Cases */
.use-cases {
    padding: 4rem 0;
    background: var(--gray-50);
}

.use-cases h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--checkweigher-primary);
    margin-bottom: 3rem;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

@media (max-width: 1200px) {
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.use-case-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.use-case-icon {
    width: 4rem;
    height: 4rem;
    background: var(--checkweigher-gradient);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    margin: 0 auto 1.5rem;
}

.use-case-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--checkweigher-primary);
    margin-bottom: 1rem;
}

.use-case-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Related Calculators */
.related-calculators {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    position: relative;
}

.related-calculators::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e5e7eb" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

.related-calculators h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--checkweigher-primary);
    margin-bottom: 3rem;
}

.categories-grid {
    display: grid;
    gap: 3rem;
}

.category-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--checkweigher-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.calculators-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

@media (max-width: 1024px) {
    .calculators-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .calculators-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

.calculator-category {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 1rem;
    padding: 2rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.calculator-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--checkweigher-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.calculator-category:hover {
    border-color: var(--checkweigher-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.calculator-category:hover::before {
    transform: scaleX(1);
}

.category-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.category-icon {
    font-size: 2.5rem;
    margin-right: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.category-header h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
    line-height: 1.3;
}

.category-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.calculator-link {
    color: var(--gray-600);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-100);
    font-weight: 500;
    position: relative;
}

.calculator-link:last-child {
    border-bottom: none;
}

.calculator-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 2px;
    background: var(--checkweigher-primary);
    transition: var(--transition);
}

.calculator-link:hover {
    color: var(--checkweigher-primary);
    padding-left: 1rem;
}

.calculator-link:hover::before {
    width: 0.5rem;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--checkweigher-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

.calculator-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 2px solid var(--gray-200);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    text-align: center;
    display: block;
}

.calculator-card:hover {
    border-color: var(--checkweigher-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.calculator-card.active {
    border-color: var(--checkweigher-primary);
    background: var(--checkweigher-light);
}

.calculator-card i {
    font-size: 2rem;
    color: var(--checkweigher-primary);
    margin-bottom: 1rem;
}

.calculator-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--checkweigher-primary);
    margin-bottom: 0.5rem;
}

.calculator-card p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* FAQ */
.faq-section {
    padding: 4rem 0;
    background: var(--gray-50);
}

.faq-section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--checkweigher-primary);
    margin-bottom: 3rem;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 0.75rem;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--checkweigher-light);
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--checkweigher-primary);
    margin: 0;
}

.faq-question i {
    color: var(--checkweigher-primary);
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 200px;
}

.faq-answer p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    color: var(--checkweigher-primary);
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--checkweigher-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--checkweigher-primary);
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-400);
}

/* Notifications */
#notification-container {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.notification {
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--checkweigher-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

.notification.success {
    border-left-color: var(--success);
}

.notification.warning {
    border-left-color: var(--warning);
}

.notification.error {
    border-left-color: var(--error);
}

.notification i {
    font-size: 1.25rem;
    color: var(--checkweigher-primary);
}

.notification.success i {
    color: var(--success);
}

.notification.warning i {
    color: var(--warning);
}

.notification.error i {
    color: var(--error);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .tabs-list {
        padding: 0.25rem;
    }
    
    .tab-btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .tab-btn span {
        display: none;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .tab-content {
        padding: 1rem;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 300px;
    }
    
    .export-buttons {
        flex-direction: column;
    }
    
    .steps-grid,
    .use-cases-grid,
    .calculators-grid {
        grid-template-columns: 1fr;
    }
    
    .privacy-content {
        flex-direction: column;
        text-align: center;
    }
    
    #notification-container {
        top: 1rem;
        right: 1rem;
        left: 1rem;
    }
    
    .notification {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    .stat-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .step-number,
    .use-case-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
    
    .template-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.25rem;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .privacy-banner,
    .mobile-menu,
    #notification-container {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .calculator-wrapper {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
    
    .tab-content {
        display: block !important;
        page-break-inside: avoid;
    }
    
    .charts-grid {
        display: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --checkweigher-primary: #0000ff;
        --checkweigher-secondary: #000080;
        --checkweigher-accent: #000040;
        --gray-600: #000000;
        --gray-700: #000000;
        --gray-900: #000000;
    }
    
    .form-group input,
    .form-group select {
        border-width: 3px;
    }
    
    .tab-btn.active {
        border: 3px solid var(--white);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}