/* ============================================
   LifeTree Blog - Design System
   ============================================ */

/* CSS Variables - Coastal Fog Palette */
:root {
    /* Primary Colors */
    --color-bg: #F7F5F2;
    --color-bg-alt: #E3EDF7;
    --color-surface: #FFFFFF;
    --color-surface-alt: #D5D8DC;
    
    /* Text Colors */
    --color-text: #0A1929;
    --color-text-secondary: #4A6670;
    --color-text-muted: #8FA3B0;
    
    /* Accent Colors */
    --color-accent: #2E5090;
    --color-accent-light: #A8C4E0;
    --color-accent-dark: #1B3A5C;
    
    /* Category Colors */
    --color-health: #2D6A1E;
    --color-health-light: #B8F369;
    --color-wealth: #B87333;
    --color-wealth-light: #D4A574;
    --color-fitness: #2E5090;
    --color-fitness-light: #A8C4E0;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(10, 25, 41, 0.05);
    --shadow-md: 0 4px 12px rgba(10, 25, 41, 0.08);
    --shadow-lg: 0 8px 30px rgba(10, 25, 41, 0.12);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(247, 245, 242, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-xs) 0;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    padding: var(--space-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-xs);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: calc(var(--space-2xl) + 60px) var(--space-md) var(--space-xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        var(--color-bg) 0%, 
        var(--color-bg-alt) 50%, 
        var(--color-bg) 100%
    );
}

.hero-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    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='%232E5090' fill-opacity='1'%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");
}

.hero-content {
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    background: rgba(46, 80, 144, 0.1);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-md);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

.hero-title .line {
    display: block;
}

.hero-title .accent {
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-text-muted);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-text-muted);
    border-radius: 2px;
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

.btn-outline:hover {
    background: var(--color-accent);
    color: white;
}

.btn-full {
    width: 100%;
}

/* ============================================
   Section Styles
   ============================================ */

section {
    padding: var(--space-2xl) 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    line-height: 1.2;
}

.section-title .highlight {
    color: var(--color-accent);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   Categories Section
   ============================================ */

.categories {
    background: var(--color-surface);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.category-card {
    background: var(--color-bg);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    width: 64px;
    height: 64px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.category-icon svg {
    width: 32px;
    height: 32px;
}

.category-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.category-desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.category-link {
    font-weight: 600;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    transition: gap var(--transition-fast);
}

.category-link:hover {
    gap: var(--space-sm);
}

.category-accent {
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    opacity: 0.1;
    transform: translate(40%, -40%);
}

.health-accent {
    background: var(--color-health);
}

.wealth-accent {
    background: var(--color-wealth);
}

.fitness-accent {
    background: var(--color-fitness);
}

/* ============================================
   Articles Section
   ============================================ */

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

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    color: var(--color-text);
    background: var(--color-surface-alt);
}

.filter-btn.active {
    color: white;
    background: var(--color-accent);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.article-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.article-image {
    height: 220px;
    background: linear-gradient(135deg, var(--color-bg-alt), var(--color-surface-alt));
    position: relative;
    overflow: hidden;
}

.article-category {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: white;
    border-radius: var(--radius-sm);
}

.article-category.health {
    background: var(--color-health);
}

.article-category.wealth {
    background: var(--color-wealth);
}

.article-category.fitness {
    background: var(--color-fitness);
}

.article-content {
    padding: var(--space-md);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.article-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    line-height: 1.4;
    color: var(--color-text);
}

.article-excerpt {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-bg-alt);
}

.article-author {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    font-weight: 500;
}

.author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.read-time {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.articles-cta {
    text-align: center;
}

/* ============================================
   Newsletter Section
   ============================================ */

.newsletter {
    background: var(--color-accent);
    color: white;
}

.newsletter .section-tag {
    color: var(--color-accent-light);
}

.newsletter .section-title {
    color: white;
}

.newsletter .section-title .highlight {
    color: var(--color-accent-light);
}

.newsletter .section-desc {
    color: rgba(255, 255, 255, 0.8);
}

.newsletter-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.newsletter-benefits {
    margin-top: var(--space-lg);
}

.newsletter-benefits li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: 1rem;
}

.newsletter-form {
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.newsletter-form .form-group {
    margin-bottom: var(--space-md);
}

.newsletter-form .form-input,
.newsletter-form .form-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
    border: 2px solid var(--color-bg-alt);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
}

.newsletter-form .form-input:focus,
.newsletter-form .form-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.newsletter-form .form-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

/* ============================================
   About Section
   ============================================ */

.about {
    background: var(--color-surface);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image-main {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--color-bg-alt), var(--color-accent-light));
    border-radius: var(--radius-lg);
    position: relative;
    z-index: 1;
}

.about-image-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 60%;
    height: 60%;
    background: var(--color-accent);
    border-radius: var(--radius-lg);
    opacity: 0.1;
    z-index: 0;
}

.about-content .section-tag {
    margin-bottom: var(--space-sm);
}

.about-text {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.about-values {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.value {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.value-icon {
    font-size: 1.5rem;
}

.value-text {
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================
   Contact Section
   ============================================ */

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-2xl);
}

.contact-item {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.contact-details p {
    color: var(--color-text-secondary);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

.social-link {
    color: var(--color-accent);
    font-weight: 500;
}

.social-link:hover {
    text-decoration: underline;
}

.contact-form {
    background: var(--color-surface);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
    border: 2px solid var(--color-bg-alt);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--color-text);
    color: white;
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links li {
    margin-bottom: var(--space-xs);
}

.footer-links a {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ============================================
   Toast Notification
   ============================================ */

.toast {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    background: var(--color-text);
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-base);
    z-index: 10000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
    .newsletter-content,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .about-image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-surface);
        flex-direction: column;
        padding: calc(var(--space-2xl) + 60px) var(--space-lg) var(--space-lg);
        gap: var(--space-md);
        transition: right var(--transition-base);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
        z-index: 1001;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-stats {
        gap: var(--space-lg);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .about-values {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --space-2xl: 4rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .category-card {
        padding: var(--space-lg);
    }
    
    .newsletter-form,
    .contact-form {
        padding: var(--space-md);
    }
}

/* ============================================
   Utility Classes
   ============================================ */

.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;
}