:root {
    --background: #f5f5f7;
    --text: #1d1d1f;
    --text-secondary: #86868b;
    --accent: #0071e3;
    --border: rgba(0, 0, 0, 0.1);
    --background-secondary: #ffffff;

    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 48px;
    --spacing-xxl: 80px;
}

[data-theme="dark"] {
    --background: #000000;
    --text: #f5f5f7;
    --text-secondary: #86868b;
    --accent: #2997ff;
    --border: rgba(255, 255, 255, 0.1);
    --background-secondary: #161617;
    --text-regular: #86868b;
    --text-bold: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.header {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.name {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
}

.title {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.theme-toggle {
    background: none;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin: var(--spacing-md) 0 var(--spacing-xl);
    padding: 0;
    position: relative;
    transition: background-color 0.2s ease;
}

.theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.sun-icon, .moon-icon {
    position: absolute;
    stroke: var(--text);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.moon-icon {
    opacity: 1;
    transform: scale(1);
}

.sun-icon {
    opacity: 0;
    transform: scale(0.8);
}

[data-theme="dark"] .moon-icon {
    opacity: 0;
    transform: scale(0.8);
}

[data-theme="dark"] .sun-icon {
    opacity: 1;
    transform: scale(1);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.scroll-indicator.fade-out {
    opacity: 0;
    visibility: hidden;
}

.arrow-down {
    width: 16px;
    height: 16px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.section {
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid var(--border);
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.5px;
}

h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.content {
    max-width: 720px;
}

.content p {
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--text);
}

[data-theme="dark"] .content p {
    color: var(--text-secondary);
}

[data-theme="dark"] .content p b,
[data-theme="dark"] .content p strong {
    color: var(--text-bold);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--text-bold);
}

.interests-list {
    list-style: none;
    padding: 0;
    margin: var(--spacing-lg) 0;
}

.interests-list li {
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-left: var(--spacing-lg);
}

.interests-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent);
}

.interests-list h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

.cta-container {
    margin: var(--spacing-lg) 0;
    display: flex;
    justify-content: center;
}

.apple-button {
    background-color: var(--accent);
    color: white;
    border: none;
    border-radius: 980px;
    padding: 12px 24px;
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 140px;
    text-align: center;
}

.apple-button:hover {
    background-color: var(--accent);
    opacity: 0.9;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .apple-button:hover {
    box-shadow: 0 0 4px rgba(255, 255, 255, 0.2);
}

.apple-button:active {
    transform: scale(0.98);
}

.button-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

.social-bullet-links {
    list-style: none;
    padding: 0;
    margin: var(--spacing-md) 0 var(--spacing-lg);
}

.social-bullet-links li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.social-bullet-links a {
    color: var(--accent);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 400;
    display: inline-block;
    transition: color 0.2s ease;
}

.social-bullet-links a:hover {
    text-decoration: none;
    opacity: 0.9;
}

.social-link {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icon {
    fill: #000000;
    transition: fill 0.2s ease;
    width: 36px;
    height: 36px;
}

[data-theme="dark"] .social-icon {
    fill: #ffffff;
}

.social-link:hover .social-icon {
    fill: var(--accent);
}

footer {
    padding: var(--spacing-xl) 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-lg) 0;
    }
    
    .name {
        font-size: 2.5rem;
    }
    
    .title {
        font-size: 1.25rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
}

@media (max-width: 480px) {
    .name {
        font-size: 2rem;
    }
    
    .content p {
        font-size: 1rem;
    }
    
    .apple-button {
        width: 100%;
    }
}