/* Design System - Dark Mode Always */
:root {
    --color-text: #E3E9F0;
    --color-text-light: #C9D1D9;
    --color-background: #0D1117;
    --color-surface: #161B22;
    --color-border: #30363D;
    --color-accent: #FF5A5F;
    --color-accent-alt: #A855F7;
    --color-glow: rgba(168, 85, 247, 0.3);
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;
    --spacing-2xl: 96px;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-serif: 'Georgia', 'Times New Roman', serif;
    --max-width: 680px;
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Site Header */
.site-header {
    padding: var(--spacing-xl) var(--spacing-md);
}

.site-name {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent-alt) 50%, var(--color-accent) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 8s ease-in-out infinite;
}

.site-name a {
    background: inherit;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.site-nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: var(--transition);
}

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

/* Projects */
.section {
    margin-bottom: var(--spacing-xl);
}

.projects-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.project-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--color-accent-alt);
    transform: translateX(4px);
    box-shadow: 0 0 20px var(--color-glow);
}

.project-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.project-info {
    flex: 1;
    min-width: 0;
}

.project-name {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.project-desc {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

.project-arrow {
    color: var(--color-text-light);
    flex-shrink: 0;
    transition: var(--transition);
}

.project-card:hover .project-arrow {
    color: var(--color-text);
    transform: translateX(4px);
}

/* Section Title */
.section-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* Main */
.main {
    min-height: calc(100vh - 500px);
    padding: 0 0 var(--spacing-xl) 0;
}

/* Footer */
.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-2xl);
}

.footer p {
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .site-header {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .site-name {
        font-size: 1.75rem;
    }

    .main {
        padding: 0 0 var(--spacing-lg) 0;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 32px;
        --spacing-xl: 48px;
        --spacing-2xl: 64px;
    }

    .site-name {
        font-size: 1.5rem;
    }

    .project-card {
        padding: var(--spacing-sm);
    }

    .project-desc {
        font-size: 0.875rem;
    }
}