:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #a1a1a1;
    --accent-color: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(10, 10, 10, 0.7);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
.logo {
    font-family: 'Outfit', sans-serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 8rem 0;
}

.section-header {
    margin-bottom: 4rem;
}

.section-hint {
    color: var(--accent-color);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 0.8rem;
    display: block;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(12px);
    background-color: var(--glass-bg);
    border-bottom: 1px solid var(--card-border);
    padding: 1.5rem 0;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
}

.logo span {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.9rem;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 2rem;
    padding: 0.4rem 0.8rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    transition: var(--transition);
    padding: 0.2rem 0.4rem;
}

.lang-btn.active {
    color: var(--accent-color);
}

.lang-btn:hover:not(.active) {
    color: var(--text-primary);
}

.divider {
    color: var(--card-border);
    font-size: 0.8rem;
}


/* Hero */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.sub-title {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 400;
}

.main-title {
    font-size: 5.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.main-title span {
    color: var(--accent-color);
    position: relative;
}

.hero-desc {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin-bottom: 3rem;
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.btn.primary {
    background-color: var(--accent-color);
    color: white;
}

.btn.primary:hover {
    background-color: #2563eb;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn.secondary {
    border: 1px solid var(--card-border);
    color: var(--text-primary);
}

.btn.secondary:hover {
    background: var(--card-bg);
}

.hero-bg-accent {
    position: absolute;
    top: 20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(80px);
    z-index: 1;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 3rem;
    border-radius: 16px;
    transition: var(--transition);
}

.skill-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-5px);
}

.skill-card i {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    width: 40px;
    height: 40px;
}

.skill-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.skill-card p {
    color: var(--text-secondary);
}

.education-grid,
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-info {
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    align-items: center;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.contact-info i {
    width: 18px;
    height: 18px;
    color: var(--accent-color);
}


/* Experience */
.timeline {
    border-left: 1px solid var(--card-border);
    padding-left: 2rem;
}

.timeline-item {
    position: relative;
    padding-bottom: 4rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.35rem;
    top: 0.5rem;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
}

.timeline-date {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Contact */
.contact-card {
    background: linear-gradient(135deg, var(--card-bg), rgba(59, 130, 246, 0.1));
    border: 1px solid var(--card-border);
    padding: 5rem;
    border-radius: 24px;
    text-align: center;
}

.contact-card .section-title {
    margin-bottom: 1rem;
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

/* Footer */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--card-border);
}

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

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--text-secondary);
    transition: var(--transition);
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .main-title {
        font-size: 3.5rem;
    }

    .nav-links {
        display: none;
    }

    .section-title {
        font-size: 2.5rem;
    }
}