/* Vacuum Sealing Calculator Styles */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    line-height: 1.6;
    color: #6b7280;
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 100%);
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Privacy Banner */
.privacy-banner {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #1e293b;
    color: white;
    padding: 16px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    max-width: 400px;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
}

.privacy-banner.show {
    transform: translateY(0);
    opacity: 1;
}

.privacy-content {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.privacy-btn {
    background: #3b82f6;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.privacy-btn:hover {
    background: #2563eb;
}

/* Notice Bar */
.notice-bar {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    padding: 12px 0;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
}

/* Header */
.header {
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: bold;
    color: #3b82f6;
    text-decoration: none;
    transition: color 0.2s;
}

.logo:hover {
    color: #1d4ed8;
}

.logo svg {
    color: #3b82f6;
}

/* Breadcrumb Navigation */
.breadcrumb {
    display: flex;
    align-items: center;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 8px;
    font-size: 14px;
}

.breadcrumb-list li:not(:last-child)::after {
    content: '›';
    margin-left: 8px;
    color: #64748b;
}

.breadcrumb-list a {
    color: #64748b;
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb-list a:hover {
    color: #3b82f6;
}

.breadcrumb-list .active {
    color: #111827;
    font-weight: 500;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    background: #64748b;
    transition: all 0.3s ease;
}

/* Main Content */
.main-content {
    padding: 32px 0;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 48px;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: bold;
    color: #111827;
    margin-bottom: 16px;
}

.hero p {
    font-size: 1.125rem;
    color: #64748b;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Statistics Section */
.stats-section {
    margin-bottom: 48px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.stat-card-blue {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
}

.stat-card-green {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
}

.stat-card-purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
}

.stat-icon {
    flex-shrink: 0;
}

.stat-info {
    flex: 1;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 4px;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
}

/* Card Styles */
.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    margin-bottom: 32px;
    overflow: hidden;
}

.card-header {
    padding: 24px;
    border-bottom: 1px solid #e2e8f0;
    background: #f8fafc;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #111827;
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-content {
    padding: 24px;
}

/* Calculator Section */
.calculator-section {
    margin-bottom: 48px;
}

/* Tabs */
.tabs-container {
    margin-bottom: 32px;
}

.tabs-list {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 4px;
    background: #f1f5f9;
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 24px;
}

.tab-trigger {
    padding: 12px 8px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    color: #64748b;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: 14px;
}

.tab-trigger:hover {
    background: #e0f2fe;
    color: #0284c7;
}

.tab-trigger.active {
    background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
    color: white;
    box-shadow: 0 2px 4px rgba(2, 132, 199, 0.3);
}

.tab-trigger svg {
    flex-shrink: 0;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

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

.label {
    font-weight: 500;
    color: #374151;
    margin-bottom: 8px;
    font-size: 14px;
}

.input, .select {
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: white;
    color: #111827;
}

.input:focus, .select:focus {
    outline: none;
    border-color: #0284c7;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.1);
}

.dimension-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #e5e7eb;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0284c7;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #0284c7;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider-value {
    margin-top: 8px;
    font-weight: 600;
    color: #0284c7;
    text-align: center;
}

/* Results */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.result-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
}

.result-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid #0284c7;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #e2e8f0;
}

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

.result-label {
    color: #64748b;
    font-size: 14px;
}

.result-value {
    font-weight: 600;
    color: #111827;
    font-size: 16px;
}

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.chart-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
}

.chart-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 16px;
    text-align: center;
}

.chart-card canvas {
    width: 100% !important;
    height: auto !important;
}

/* Templates */
.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.template-card {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
}

.template-card:hover {
    border-color: #0284c7;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.template-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 16px;
}

.template-specs {
    margin-bottom: 20px;
}

.template-specs p {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 4px;
}

/* History */
.history-container {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e2e8f0;
}

.history-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
}

.history-list {
    space-y: 12px;
}

.empty-state {
    text-align: center;
    color: #64748b;
    font-style: italic;
    padding: 40px 20px;
}

.history-item {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.history-date {
    font-size: 12px;
    color: #64748b;
}

.history-params {
    font-size: 14px;
    color: #374151;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(2, 132, 199, 0.4);
}

.btn-outline {
    background: white;
    color: #0284c7;
    border: 2px solid #0284c7;
}

.btn-outline:hover {
    background: #0284c7;
    color: white;
    transform: translateY(-1px);
}

.calculate-section {
    display: flex;
    justify-content: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

.calculate-section .btn-primary {
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
}

/* How It Works Section */
.how-it-works {
    margin-bottom: 48px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.step-card {
    text-align: center;
    padding: 24px;
}

.step-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 16px;
}

.step-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 12px;
}

.step-card p {
    color: #64748b;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.feature-item {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 8px;
    padding: 20px;
}

.feature-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #0c4a6e;
    margin-bottom: 8px;
}

.feature-item p {
    color: #0369a1;
    font-size: 14px;
}

/* Use Cases Section */
.use-cases {
    margin-bottom: 48px;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.use-case-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.use-case-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.use-case-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 12px;
}

.use-case-card p {
    color: #64748b;
    margin-bottom: 16px;
    line-height: 1.6;
}

.use-case-card ul {
    list-style: none;
    text-align: left;
}

.use-case-card li {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 4px;
}

/* Related Calculators Section */
.related-calculators {
    margin-bottom: 48px;
}

.calculators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.calculator-category {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 24px;
}

.category-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.category-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.category-dot.blue { background: #3b82f6; }
.category-dot.green { background: #10b981; }
.category-dot.purple { background: #8b5cf6; }
.category-dot.orange { background: #f59e0b; }
.category-dot.red { background: #ef4444; }
.category-dot.gray { background: #6b7280; }

.calculator-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calculator-link {
    color: #64748b;
    text-decoration: none;
    font-size: 14px;
    padding: 4px 0;
    transition: color 0.2s;
}

.calculator-link:hover {
    color: #0284c7;
}

.calculator-link.active {
    color: #0284c7;
    font-weight: 600;
}

.view-all-section {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

/* FAQ Section */
.faq-section {
    margin-bottom: 48px;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.faq-item {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 24px;
}

.faq-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 12px;
}

.faq-item p {
    color: #64748b;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #1e293b;
    color: #cbd5e1;
    padding: 48px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: 16px;
    font-weight: 600;
}

.footer-section h3 {
    font-size: 1.25rem;
}

.footer-section h4 {
    font-size: 1rem;
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 16px;
}

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

.footer-section li {
    margin-bottom: 8px;
}

.footer-section a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid #334155;
    text-align: center;
    color: #94a3b8;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .nav-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .mobile-menu-toggle {
        display: flex;
        position: absolute;
        top: 50%;
        right: 16px;
        transform: translateY(-50%);
    }
    
    .breadcrumb {
        order: 1;
        width: 100%;
    }
    
    .tabs-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 2px;
    }
    
    .tab-trigger {
        padding: 8px 4px;
        font-size: 12px;
        flex-direction: column;
        gap: 2px;
    }
    
    .tab-trigger svg {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .dimension-inputs {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-container {
        grid-template-columns: 1fr;
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .calculators-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .privacy-banner {
        bottom: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .tab-trigger span {
        font-size: 11px;
    }
    
    .card-content {
        padding: 16px;
    }
    
    .card-header {
        padding: 16px;
    }
    
    .hero {
        margin-bottom: 32px;
    }
    
    .stats-section {
        margin-bottom: 32px;
    }
    
    .stat-card {
        padding: 16px;
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
    }
}

/* Print styles */
@media print {
    .privacy-banner,
    .notice-bar,
    .header,
    .footer,
    .mobile-menu-toggle {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #e2e8f0;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #000;
        border: 2px solid #000;
    }
    
    .btn-outline {
        border-width: 3px;
    }
    
    .tab-trigger.active {
        background: #000;
        border: 2px solid #fff;
    }
}

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