:root {
    --bg-color: #000000;
    --card-bg: rgba(28, 28, 30, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #86868b;
    --accent: #2997ff;
    /* Apple Blue */
    --accent-gradient: linear-gradient(135deg, #2997ff 0%, #0a84ff 100%);
    --font-stack: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --section-gap: 120px;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-stack);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3 {
    letter-spacing: -0.02em;
}

h1 {
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: 0.2s;
}

a:hover {
    text-decoration: underline;
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    margin-bottom: var(--section-gap);
    scroll-margin-top: 100px;
    /* For sticky nav offset */
}

/* Nav */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
    padding: 15px 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.2rem;
    color: #fff;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-links a:hover {
    color: #fff;
    text-decoration: none;
}

/* Hero */
.hero {
    height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

.hero p {
    max-width: 600px;
    margin: 20px 0 40px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 99px;
    background: var(--text-primary);
    color: #000;
    font-weight: 600;
    text-decoration: none;
}

.btn:hover {
    transform: scale(1.05);
    text-decoration: none;
}

/* Cards (Projects) */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    transition: transform 0.3s;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(44, 44, 46, 0.8);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

/* --- Travel Map --- */
#travel-map {
    height: 500px;
    width: 100%;
    border-radius: 20px;
    background: #1a1a1a;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    z-index: 1; /* Keep below nav */
}

/* Tabs ("What's on my mind") */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 10px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    padding: 10px 20px;
    cursor: pointer;
    font-family: inherit;
}

.tab-btn.active {
    color: #fff;
    border-bottom: 2px solid var(--accent);
}

.tab-content {
    display: none;
    margin-top: 30px;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.video-card iframe {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 12px;
    border: none;
}

.video-card h4 {
    margin-top: 10px;
    color: #fff;
}

/* Music */
.music-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.music-link {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--card-bg);
    padding: 15px 25px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    min-width: 250px;
}

.music-link:hover {
    background: #333;
    text-decoration: none;
}

.music-icon {
    width: 30px;
    height: 30px;
}

/* Resume */
.resume-section {
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0), rgba(20, 20, 20, 0.8));
    padding: 80px;
    border-radius: 20px;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Mobile */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .masonry {
        column-count: 2;
    }
}