* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", sans-serif;
}

body {
    background: #0f172a;
    color: #e5e7eb;
}

/* NAVBAR */
nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #020617;
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav h1 {
    color: #38bdf8;
}

nav ul {
    display: flex;
    gap: 20px;
    list-style: none;
}

nav a {
    color: #e5e7eb;
    text-decoration: none;
}

nav a:hover {
    color: #38bdf8;
}

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

.hero h1 {
    font-size: 3rem;
    margin: 10px 0;
}

.hero h3 {
    color: #38bdf8;
    height: 30px;
}

/* BUTTONS */
.hero-btns {
    margin-top: 30px;
}

.btn {
    padding: 12px 28px;
    margin: 8px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

.primary {
    background: #38bdf8;
    color: black;
}

.primary:hover {
    transform: scale(1.1);
}

.outline {
    border: 2px solid #38bdf8;
    color: #38bdf8;
}

.outline:hover {
    background: #38bdf8;
    color: black;
}

/* SECTIONS */
.section {
    padding: 80px 40px;
    text-align: center;
}

.section h2 {
    margin-bottom: 20px;
}

.dark {
    background: #020617;
}

/* SKILLS */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.skills-grid span {
    background: #0f172a;
    padding: 15px;
    border-radius: 10px;
    transition: 0.3s;
}

.skills-grid span:hover {
    background: #38bdf8;
    color: black;
    transform: scale(1.1);
}

/* PROJECTS */
.project-card {
    background: #020617;
    padding: 25px;
    border-radius: 12px;
    margin: 20px auto;
    max-width: 600px;
    transition: 0.3s;
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-card a {
    color: #38bdf8;
    text-decoration: none;
}
.papers-list {
    list-style-type: none;
    padding: 0;
}

.papers-list li {
    margin: 10px 0;
    font-size: 1rem;
}

.papers-list li a {
    text-decoration: none;
    color: #00aaff;
    font-weight: 500;
}

.papers-list li a:hover {
    text-decoration: underline;
}