:root {
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --accent-color: #60a5fa;
    --accent-hover: #3b82f6;
    --card-bg: #1e293b;
    --border-color: #334155;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    transition: background-color 0.3s, color 0.3s;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.dot {
    color: var(--accent-color);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 60px 0;
    gap: 20px;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

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

.subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    min-height: 30px;
}

.avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: var(--card-bg);
    border: 2px solid var(--accent-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    flex-shrink: 0;
}

h2 {
    margin: 50px 0 20px;
    font-size: 1.8rem;
    letter-spacing: -0.5px;
}

p {
    margin-bottom: 15px;
    color: var(--text-color);
}

.skills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: transform 0.2s, border-color 0.2s;
}

.skill-tag:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.project-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.project-card h3 {
    margin-bottom: 10px;
}

.project-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.project-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
}

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

.interactive-zone {
    margin-top: 60px;
    padding: 40px;
    background-color: var(--card-bg);
    border-radius: 16px;
    text-align: center;
    border: 1px dashed var(--border-color);
}

button {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s;
}

button:hover {
    background-color: var(--accent-hover);
}

button:active {
    transform: scale(0.96);
}

#theme-toggle {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.progress-bar-container {
    width: 100%;
    max-width: 300px;
    height: 10px;
    background-color: var(--border-color);
    border-radius: 10px;
    margin: 20px auto;
    overflow: hidden;
}

#vibe-progress {
    height: 100%;
    width: 0%;
    background-color: var(--accent-color);
    transition: width 0.3s ease, background-color 0.3s;
}

footer {
    margin-top: 80px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .hero {
        flex-direction: column-reverse;
        text-align: center;
    }
}