/* HealthTech Picks - Custom Styles
   Clinical Editorial Design System
   ================================ */

/* CSS Custom Properties */
:root {
    --color-clinical-50: #f0fdfa;
    --color-clinical-100: #ccfbf1;
    --color-clinical-200: #99f6e4;
    --color-clinical-300: #5eead4;
    --color-clinical-400: #2dd4bf;
    --color-clinical-500: #0d9488;
    --color-clinical-600: #0f766e;
    --color-clinical-700: #115e59;
    --color-clinical-800: #134e4a;
    --color-clinical-900: #042f2e;
    
    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'IBM Plex Sans', system-ui, sans-serif;
    
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out-sine: cubic-bezier(0.37, 0, 0.63, 1);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.2;
}

.font-display {
    font-family: var(--font-display);
}

/* Focus States - Accessibility */
:focus-visible {
    outline: 2px solid var(--color-clinical-500);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background-color: var(--color-clinical-200);
    color: var(--color-clinical-900);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.8);
        opacity: 0.8;
    }
    80%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.animate-fade-up {
    opacity: 0;
    animation: fadeUp 0.6s var(--ease-out-expo) forwards;
}

.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.4s var(--ease-out-expo) forwards;
}

.animate-slide-in {
    opacity: 0;
    animation: slideIn 0.5s var(--ease-out-expo) forwards;
}

/* Staggered animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* Intersection Observer animations */
[data-animate] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Comparison Table Styles */
.comparison-table {
    border-collapse: separate;
    border-spacing: 0;
}

.comparison-table th,
.comparison-table td {
    border-bottom: 1px solid #e2e8f0;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table tbody tr {
    transition: background-color 0.15s ease;
}

/* Tool Card Hover Effects */
.tool-card {
    transition: transform 0.3s var(--ease-out-expo), box-shadow 0.3s var(--ease-out-expo);
}

.tool-card:hover {
    transform: translateY(-4px);
}

/* Category Card Effects */
.category-card {
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-clinical-500), var(--color-clinical-300));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-out-expo);
}

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

/* Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-clinical {
    background-color: var(--color-clinical-100);
    color: var(--color-clinical-700);
}

.badge-success {
    background-color: #dcfce7;
    color: #166534;
}

.badge-warning {
    background-color: #fef3c7;
    color: #92400e;
}

.badge-info {
    background-color: #dbeafe;
    color: #1e40af;
}

/* Rating Stars */
.rating-stars {
    display: flex;
    gap: 2px;
}

.rating-star {
    width: 16px;
    height: 16px;
    color: #fbbf24;
}

.rating-star.empty {
    color: #e2e8f0;
}

.rating-star.half {
    background: linear-gradient(90deg, #fbbf24 50%, #e2e8f0 50%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Trust Signal Styles */
.trust-signal {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    border-radius: 0.5rem;
    backdrop-filter: blur(10px);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--color-clinical-600) 0%, var(--color-clinical-400) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: 0.75rem;
    transition: all 0.2s var(--ease-out-expo);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-clinical-600);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-clinical-700);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: white;
    color: var(--color-clinical-600);
    border: 1px solid var(--color-clinical-200);
}

.btn-secondary:hover {
    background-color: var(--color-clinical-50);
    border-color: var(--color-clinical-300);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-clinical-600);
}

.btn-ghost:hover {
    background-color: var(--color-clinical-50);
}

/* Form Styles */
.input {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background-color: white;
    border: 1px solid #e2e8f0;
    border-radius: 0.75rem;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input:focus {
    outline: none;
    border-color: var(--color-clinical-500);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.input::placeholder {
    color: #94a3b8;
}

/* Search Box */
.search-box {
    position: relative;
}

.search-box .search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    pointer-events: none;
}

.search-box input {
    padding-left: 3.5rem;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    padding: 0.5rem;
    background: white;
    border-radius: 0.75rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s var(--ease-out-expo);
    z-index: 50;
}

.dropdown:hover .dropdown-menu,
.dropdown.is-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: 0.625rem 1rem;
    border-radius: 0.5rem;
    color: #475569;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.dropdown-item:hover {
    background-color: var(--color-clinical-50);
    color: var(--color-clinical-700);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.3s var(--ease-out-expo);
}

.mobile-nav.is-open {
    transform: translateX(0);
}

/* Grid Pattern Background */
.grid-pattern {
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230f766e' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* Line Clamp */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Prose Styles for Review Content */
.prose {
    color: #374151;
    max-width: 65ch;
}

.prose h2 {
    color: #111827;
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.prose h3 {
    color: #111827;
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.prose p {
    margin-bottom: 1.25rem;
}

.prose ul, .prose ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.prose li {
    margin-bottom: 0.5rem;
}

.prose ul li::marker {
    color: var(--color-clinical-500);
}

.prose a {
    color: var(--color-clinical-600);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.prose a:hover {
    color: var(--color-clinical-700);
}

.prose blockquote {
    border-left: 4px solid var(--color-clinical-500);
    padding-left: 1rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: #6b7280;
}

.prose code {
    background-color: #f1f5f9;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.875em;
}

/* Pro/Con Lists */
.pros-cons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.pros-list, .cons-list {
    padding: 1.5rem;
    border-radius: 1rem;
}

.pros-list {
    background-color: #ecfdf5;
    border: 1px solid #a7f3d0;
}

.cons-list {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
}

.pros-list h4, .cons-list h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.pros-list h4 {
    color: #065f46;
}

.cons-list h4 {
    color: #991b1b;
}

.pros-list li::marker {
    content: '✓ ';
    color: #10b981;
}

.cons-list li::marker {
    content: '✗ ';
    color: #ef4444;
}

/* Feature Comparison Grid */
.feature-grid {
    display: grid;
    gap: 1px;
    background-color: #e2e8f0;
    border-radius: 1rem;
    overflow: hidden;
}

.feature-row {
    display: grid;
    grid-template-columns: 2fr repeat(var(--cols, 3), 1fr);
    background-color: white;
}

.feature-row.header {
    background-color: #f8fafc;
    font-weight: 600;
}

.feature-cell {
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
}

.feature-cell.center {
    justify-content: center;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 0.5rem;
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-image {
    height: 200px;
    margin-bottom: 1rem;
}

/* Tooltip */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 0.75rem;
    background-color: #1e293b;
    color: white;
    font-size: 0.75rem;
    border-radius: 0.5rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 50;
    pointer-events: none;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Notification Badge */
.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 8px;
    height: 8px;
    background-color: #ef4444;
    border-radius: 50%;
    border: 2px solid white;
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background-color: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-clinical-500), var(--color-clinical-400));
    border-radius: 4px;
    transition: width 0.5s var(--ease-out-expo);
}

/* Chip/Tag Styles */
.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background-color: #f1f5f9;
    border-radius: 9999px;
    font-size: 0.875rem;
    color: #475569;
    transition: background-color 0.15s ease;
}

.chip:hover {
    background-color: #e2e8f0;
}

.chip-clinical {
    background-color: var(--color-clinical-50);
    color: var(--color-clinical-700);
}

.chip-clinical:hover {
    background-color: var(--color-clinical-100);
}

/* Table of Contents */
.toc {
    position: sticky;
    top: 6rem;
    padding: 1.5rem;
    background-color: #f8fafc;
    border-radius: 1rem;
    border: 1px solid #e2e8f0;
}

.toc-title {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-item {
    margin-bottom: 0.5rem;
}

.toc-link {
    display: block;
    padding: 0.375rem 0;
    color: #64748b;
    font-size: 0.875rem;
    border-left: 2px solid transparent;
    padding-left: 0.75rem;
    transition: color 0.15s ease, border-color 0.15s ease;
}

.toc-link:hover,
.toc-link.active {
    color: var(--color-clinical-600);
    border-color: var(--color-clinical-500);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background-color: var(--color-clinical-600);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s var(--ease-out-expo);
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
    z-index: 40;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--color-clinical-700);
    transform: translateY(-2px);
}

/* Print Styles */
@media print {
    header,
    footer,
    .back-to-top,
    nav {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    a {
        text-decoration: none;
        color: inherit;
    }
    
    .prose a::after {
        content: ' (' attr(href) ')';
        font-size: 0.8em;
        color: #666;
    }
}

/* Responsive Utilities */
@media (max-width: 640px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .hide-tablet {
        display: none !important;
    }
}

@media (min-width: 1025px) {
    .hide-desktop {
        display: none !important;
    }
}

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

/* Dark Mode Support (future) */
@media (prefers-color-scheme: dark) {
    /* Can be enabled when dark mode is implemented */
    /*
    :root {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #94a3b8;
    }
    */
}