:root {
    --bg: #020c1b;
    --highlight: #00d4ff;
    --text: #ccd6f6;
    --text-dim: #8892b0;
    --glass: rgba(255, 255, 255, 0.03);
    --border: rgba(255, 255, 255, 0.1);
}

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    background-image: radial-gradient(circle at 15% 15%, #112240 0%, var(--bg) 60%);
}

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

/* Navigation */
nav {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    background: rgba(2, 12, 27, 0.85); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border); padding: 15px 0;
}
.nav-content { display: flex; justify-content: space-between; align-items: center; }
.logo { font-weight: 800; font-size: 1.5rem; color: #fff; text-decoration: none; }
.logo span { color: var(--highlight); }
.nav-links { display: flex; list-style: none; gap: 30px; }
.nav-links a { text-decoration: none; color: var(--text); font-size: 0.9rem; transition: 0.3s; }
.nav-links a:hover { color: var(--highlight); }

/* Hero */
section { padding: 80px 0; }
.hero { height: 100vh; display: flex; flex-direction: column; justify-content: center; }
.hero-welcome { color: var(--highlight); font-family: monospace; font-size: 1.2rem; }
.hero-title { font-size: clamp(40px, 8vw, 80px); font-weight: 800; color: #fff; line-height: 1.1; }
.hero-subtitle { font-size: clamp(24px, 4vw, 40px); color: var(--text-dim); margin: 15px 0; }
.hero-description { max-width: 600px; margin-bottom: 40px; }
.hero-profile-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.hero-profile-links a {
    align-items: center; border: 1px solid var(--border); border-radius: 50%;
    color: var(--text); display: inline-flex; height: 42px; justify-content: center;
    text-decoration: none; transition: 0.3s; width: 42px;
}
.hero-profile-links a:hover { border-color: var(--highlight); color: var(--highlight); transform: translateY(-3px); }

/* Buttons */
.btn {
    padding: 12px 28px; border: 1px solid var(--highlight);
    color: var(--highlight); text-decoration: none; border-radius: 4px;
    font-weight: 600; display: inline-block; transition: 0.3s;
}
.btn-filled { background: var(--highlight); color: var(--bg); margin-right: 15px; }
.btn:hover { background: rgba(0, 212, 255, 0.1); transform: translateY(-3px); }

/* Project Cards */
.section-title { font-size: 2rem; color: #fff; margin-bottom: 50px; display: flex; align-items: center; gap: 20px; }
.section-title::after { content: ""; height: 1px; width: 300px; background: var(--border); }

.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 30px; }
.glass-card {
    background: var(--glass); border: 1px solid var(--border);
    border-radius: 16px; padding: 30px; backdrop-filter: blur(10px);
    transition: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.glass-card:hover { border-color: var(--highlight); transform: translateY(-10px); background: rgba(255,255,255,0.06); }

.card-badge { color: var(--highlight); font-size: 0.7rem; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; }
.tech-stack { margin: 15px 0; display: flex; flex-wrap: wrap; gap: 10px; }
.tech-stack span { background: rgba(0, 212, 255, 0.1); color: var(--highlight); padding: 4px 10px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; }
.detail-box { font-size: 0.95rem; color: var(--text-dim); margin-bottom: 20px; }
.detail-box p { margin-bottom: 10px; }
.detail-box strong { color: var(--text); }
.stats-list {
    list-style: none; margin-top: 12px; padding-left: 0;
}
.stats-list li {
    padding-left: 20px; position: relative; margin-bottom: 8px;
}
.stats-list li::before {
    content: "✓"; color: var(--highlight); font-weight: bold;
    position: absolute; left: 0;
}

.project-link {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--highlight); text-decoration: none; font-size: 0.9rem;
    font-weight: 600; padding: 10px 20px; border: 1px solid var(--highlight);
    border-radius: 6px; transition: 0.3s; margin-top: 10px;
}
.project-link:hover {
    background: var(--highlight); color: var(--bg);
    transform: translateX(5px);
}

/* Achievements */
.achievements-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.ach-card { text-align: center; }
.ach-card i { font-size: 2rem; color: var(--highlight); margin-bottom: 15px; }
.ach-card h4 { color: #fff; margin-bottom: 10px; }

/* Skills */
.skills-container { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
    gap: 40px; 
}
.skill-group h4 { color: var(--highlight); margin-bottom: 20px; font-size: 1.1rem; }
.skill-group ul { list-style: none; }
.skill-group li { 
    margin-bottom: 8px; 
    color: var(--text-dim);
    transition: 0.3s;
}
.skill-group li:hover { color: var(--text); transform: translateX(5px); }
.skill-group li::before { content: "▹ "; color: var(--highlight); font-weight: bold; }

/* Mobile */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .project-grid { grid-template-columns: 1fr; }
    .skills-container { grid-template-columns: 1fr; }
}