/* Global Styles - MattressCalc Pro */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 13px;
    line-height: 1.6;
    color: #1f2937;
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Scale */
h1 {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
}

h2 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 15px;
}

h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 15px;
}

h4, h5, h6 {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 15px;
}

p {
    margin-bottom: 15px;
}

/* Color Palette */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --accent-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background-light: #f8fafc;
    --background-white: #ffffff;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
}

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

/* Breadcrumb Navigation */
.breadcrumb {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 1px solid #e2e8f0;
    padding: 12px 0;
    margin-bottom: 0;
    position: relative;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 14px;
    flex-wrap: wrap;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    color: #64748b;
    font-weight: 400;
}

.breadcrumb-list li:not(:last-child)::after {
    content: "/";
    margin: 0 8px;
    color: #cbd5e1;
    font-weight: 400;
    font-size: 12px;
}

.breadcrumb-list li a {
    color: #2563eb;
    text-decoration: none;
    transition: all 0.2s ease;
    font-weight: 400;
    padding: 4px 8px;
    border-radius: 4px;
    position: relative;
}

.breadcrumb-list li a:hover {
    color: #1d4ed8;
    background: rgba(37, 99, 235, 0.1);
    text-decoration: none;
}

.breadcrumb-list li a:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

.breadcrumb-list li:last-child {
    color: #374151;
    font-weight: 500;
}

/* Optional breadcrumb icons */
.breadcrumb-list li:first-child a::before {
    content: "\f015"; /* FontAwesome home icon */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    margin-right: 6px;
    font-size: 12px;
    opacity: 0.7;
}

/* Breadcrumb animation */
.breadcrumb-list li {
    opacity: 0;
    transform: translateY(-10px);
    animation: breadcrumbSlideIn 0.3s ease forwards;
}

.breadcrumb-list li:nth-child(1) { animation-delay: 0.1s; }
.breadcrumb-list li:nth-child(2) { animation-delay: 0.2s; }
.breadcrumb-list li:nth-child(3) { animation-delay: 0.3s; }
.breadcrumb-list li:nth-child(4) { animation-delay: 0.4s; }

@keyframes breadcrumbSlideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive breadcrumb */
@media (max-width: 768px) {
    .breadcrumb {
        padding: 10px 0;
    }

    .breadcrumb-list {
        font-size: 13px;
    }

    .breadcrumb-list li:not(:last-child)::after {
        margin: 0 6px;
        font-size: 11px;
    }

    .breadcrumb-list li {
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .breadcrumb-list li:last-child {
        max-width: none;
        flex: 1;
    }
}

/* Spacing System */
.mb-15 { margin-bottom: 15px; }
.mb-30 { margin-bottom: 30px; }
.mt-30 { margin-top: 30px; }
.py-30 { padding: 30px 0; }
.px-20 { padding: 0 20px; }

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    gap: 8px;
    min-height: 44px; /* Touch-friendly */
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 13px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--background-white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    min-height: 44px; /* Touch-friendly */
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    font-size: 13px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--background-white);
    cursor: pointer;
    min-height: 44px;
}

/* Card Styles */
.card {
    background-color: var(--background-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

/* Grid Systems */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Responsive Grid */
@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }
.text-light { color: var(--text-light); }

.bg-light { background-color: var(--background-light); }
.bg-white { background-color: var(--background-white); }

.border-radius { border-radius: 6px; }
.border-radius-lg { border-radius: 8px; }

.shadow-sm { box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1); }
.shadow-md { box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); }

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus Styles */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:focus,
.form-input:focus,
.form-select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
}

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

/* Search Styles */
.search-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: 16px 20px 16px 50px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    background: white;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1), 0 8px 25px rgba(0, 0, 0, 0.1);
}

.search-box i {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 16px;
    pointer-events: none;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
    margin-top: 8px;
}

.search-results:empty {
    display: none !important;
}

.search-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    text-decoration: none;
    color: inherit;
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.search-result-item:hover {
    background: linear-gradient(135deg, var(--background-light), #f1f5f9);
    color: var(--primary-color);
    transform: translateX(4px);
}

.search-result-item:hover .result-name {
    color: var(--primary-color);
    font-weight: 600;
}

.search-result-item:hover .result-category {
    color: var(--primary-dark);
}

.result-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.result-category {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--background-light);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.search-no-results {
    padding: 24px 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.search-no-results i {
    font-size: 32px;
    color: var(--text-light);
    margin-bottom: 12px;
    display: block;
}

/* Search Animation */
@keyframes searchSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.search-results {
    animation: searchSlideIn 0.3s ease-out;
}

/* Mobile Search Styles */
@media (max-width: 768px) {
    .search-container {
        max-width: 100%;
    }

    .search-box input {
        padding: 14px 16px 14px 45px;
        font-size: 16px; /* Prevent zoom on iOS */
    }

    .search-box i {
        left: 16px;
        font-size: 14px;
    }

    .search-result-item {
        padding: 14px 16px;
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .search-result-item:hover {
        transform: none;
    }

    .result-name {
        font-size: 14px;
    }

    .result-category {
        font-size: 11px;
        padding: 3px 10px;
    }
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    h1 { font-size: 18px; }
    h2 { font-size: 16px; }
    h3 { font-size: 15px; }
    
    .btn {
        padding: 14px 20px;
        font-size: 14px;
        min-height: 48px;
    }
    
    .form-input,
    .form-select {
        padding: 14px 16px;
        font-size: 16px; /* Prevents zoom on iOS */
        min-height: 48px;
    }
}

/* Tablet Optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
}

/* Large Screen Optimizations */
@media (min-width: 1200px) {
    .container {
        padding: 0 40px;
    }
}

/* Advertisement Sections */
.ad-section {
    padding: 40px 0;
    background: linear-gradient(135deg, #f8fafc, #f1f5f9);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    margin: 40px 0;
}

.ad-section .container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 120px;
}

.ad-section .adsbygoogle {
    max-width: 100%;
    margin: 0 auto;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Hide ad section when ads are not loaded */
.ad-section:empty {
    display: none;
}

.ad-section .adsbygoogle:empty {
    display: none;
}

/* Mobile ad adjustments */
@media (max-width: 768px) {
    .ad-section {
        padding: 30px 0;
        margin: 30px 0;
    }

    .ad-section .container {
        min-height: 100px;
    }
}

@media (max-width: 480px) {
    .ad-section {
        padding: 20px 0;
        margin: 20px 0;
    }

    .ad-section .container {
        min-height: 80px;
    }
}