:root {
    --bg-color: #0f172a;
    --text-color: #cbd5e1;
    --primary-color: #38bdf8;
    --card-bg: #1e293b;
    --accent-color: #0ea5e9;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Header */
#hero {
    text-align: center;
    padding: 80px 0 40px;
    background: linear-gradient(180deg, rgba(15,23,42,1) 0%, rgba(30,41,59,1) 100%);
}

#hero h1 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 10px;
}

#hero h2 {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    font-size: 0.95rem;
}

/* Navigation */
#navbar {
    background-color: var(--card-bg);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-links {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 30px;
    padding: 15px 0;
}

.nav-links li a {
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Sections */
.section {
    padding: 60px 0;
    border-bottom: 1px solid #334155;
}

.section-title {
    color: #fff;
    font-size: 2rem;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    height: 3px;
    width: 60px;
    background-color: var(--primary-color);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.skill-category {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.skill-category h3 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 10px;
}

/* Projects & Education */
.project-card, .edu-block {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 25px;
}

.project-card h3, .edu-block h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.project-card ul {
    margin-top: 15px;
    padding-left: 20px;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    background-color: #0b1120;
    margin-top: 40px;
}