/* Modern Dark Theme Variables */
:root {
    --bg-color: #111111;
    --card-bg: #1a1a1a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent-color: #64ffda;
    /* Teal/Cyan accent */
    --accent-hover: #4cdbc4;
    --timeline-line: #333;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --max-width: 900px;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Layout Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
nav {
    position: sticky;
    top: 0;
    background-color: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid #333;
    padding: 1rem 0;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    list-style: none;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

.nav-links a.active {
    color: var(--accent-color);
    text-decoration: underline;
    text-decoration-color: var(--accent-color);
    text-decoration-thickness: 2px;
    text-underline-offset: 6px;
}

/* Hero Section */
header {
    padding: 8rem 0 4rem;
    text-align: center;
}

.profile-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-color);
    margin-bottom: 1.5rem;
    margin-top: 1rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.social-links img,
.social-links svg {
    width: 24px;
    height: 24px;
    opacity: 0.7;
    transition: opacity 0.2s, transform 0.2s;
}

.social-links img {
    filter: invert(1);
    /* Make icons white */
}

.social-links svg {
    fill: var(--text-primary);
}

.social-links a:hover img,
.social-links a:hover svg {
    opacity: 1;
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 4rem 0;
    border-bottom: 1px solid #222;
}

section:last-child {
    border-bottom: none;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent-color);
    opacity: 0.5;
}

/* Timeline (Education & Experience) */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid var(--timeline-line);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.6rem;
    top: 5px;
    width: 12px;
    height: 12px;
    background-color: var(--bg-color);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--accent-color);
    font-family: monospace;
    margin-bottom: 0.5rem;
    display: block;
}

.timeline-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.timeline-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-style: italic;
}

.timeline-content {
    color: var(--text-secondary);
}

/* Lists (Scholarship, Service) */
.clean-list {
    list-style: none;
}

.clean-list li {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.clean-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* Grid for some sections if needed */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

/* Contact Form */


/* Footer */
footer {
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid #222;
    margin-top: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        gap: 1rem;
    }
}