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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --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;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 0.5rem;
    --radius-sm: 0.25rem;
    --radius-lg: 0.75rem;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
    background-color: #fff;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.logo:hover {
    color: var(--primary-color);
}

.nav-list {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-list a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-list a:hover {
    color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--gray-700);
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-nav {
    display: none;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    background: #fff;
    border-top: 1px solid var(--gray-200);
}

.mobile-nav.active {
    display: flex;
}

.mobile-nav a {
    color: var(--gray-700);
    text-decoration: none;
    padding: 0.5rem;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 3rem 0;
    background: linear-gradient(135deg, var(--gray-50) 0%, #fff 100%);
    border-radius: var(--radius-lg);
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto 2rem;
}

/* Search Form */
.search-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary {
    width: 100%;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-link {
    background: none;
    color: var(--primary-color);
    padding: 0;
    font-weight: 500;
}

.btn-link:hover {
    background: none;
    text-decoration: underline;
    box-shadow: none;
}

/* Info Section */
.info-section {
    margin: 3rem 0;
}

.info-section h2 {
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--gray-900);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.info-card {
    padding: 2rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.info-card h3 {
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.info-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature-card {
    padding: 2rem;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

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

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.feature-card p {
    color: var(--gray-600);
    margin-bottom: 1rem;
}

/* Platforms */
.platform-category {
    margin: 3rem 0;
}

.platform-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

/* Bio Links Grid */
.bio-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.bio-link-card {
    padding: 1.5rem;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

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

.bio-link-card h3 {
    margin-bottom: 0.75rem;
    color: var(--gray-900);
    font-size: 1.25rem;
}

.bio-link-card p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.bio-link-card .btn-link {
    display: inline-block;
    margin-top: 0.5rem;
}

.platform-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--primary-color);
    transform: scaleY(0);
    transition: var(--transition);
}

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

.platform-card:hover::before {
    transform: scaleY(1);
}

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

.platform-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.platform-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--gray-100);
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.platform-description {
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.platform-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Username Page */
.username-page {
    padding: 2rem 0;
}

.username-highlight {
    color: var(--primary-color);
    font-weight: 600;
}

.page-intro {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* Meta Info Container */
.meta-info-container {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 0.75rem;
    margin: 1rem 0;
    font-size: 0.875rem;
}

.meta-info-container.loaded {
    animation: fadeIn 0.3s ease-in;
}

.meta-item {
    margin: 0.5rem 0;
    line-height: 1.5;
}

.meta-item strong {
    color: var(--gray-700);
    display: inline-block;
    min-width: 80px;
    margin-right: 0.5rem;
}

.meta-item span {
    color: var(--gray-600);
    word-wrap: break-word;
}

.meta-item .meta-title {
    color: var(--gray-900);
    font-weight: 500;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* AdSense */
.adsense-container {
    margin: 2rem 0;
    text-align: center;
}

/* Footer */
.footer {
    background: var(--gray-800);
    color: #fff;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.footer-column h3 {
    margin-bottom: 1rem;
    color: #fff;
}

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

.footer-column ul li {
    margin: 0.5rem 0;
}

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

.footer-column ul li a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    margin: 0.5rem 0;
    color: var(--gray-400);
}

.footer-bottom a {
    color: var(--gray-400);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-list {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .info-grid,
    .features-grid,
    .platforms-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* Content Section */
.content-section {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.content-section h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

.content-section h2 {
    font-size: 1.75rem;
    margin: 2rem 0 1rem;
    color: var(--gray-900);
}

.content-section h3 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--gray-800);
}

.content-section p {
    margin-bottom: 1rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.content-section ul,
.content-section ol {
    margin: 1rem 0 1rem 2rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.content-section li {
    margin: 0.5rem 0;
}

.content-section a {
    color: var(--primary-color);
    text-decoration: none;
}

.content-section a:hover {
    text-decoration: underline;
}

/* Searches List */
.searches-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 1rem;
}

.searches-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
}

.searches-list li:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.searches-list a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.125rem;
}

.searches-list a:hover {
    text-decoration: underline;
}

.search-date {
    color: var(--gray-500);
    font-size: 0.875rem;
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .header-container {
        padding: 1rem;
    }
    
    .hero {
        padding: 2rem 1rem;
    }
    
    .search-form {
        padding: 1.5rem;
    }
    
    .content-section h1 {
        font-size: 2rem;
    }
    
    .content-section h2 {
        font-size: 1.5rem;
    }
    
    .searches-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}