:root {
    --primary-color: #0f172a; /* Deep Navy */
    --accent-color: #10b981; /* Emerald Green */
    --text-main: #334155;
    --bg-alt: #f1f5f9;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; color: var(--text-main); line-height: 1.6; }
.container { max-width: 1000px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 80px 0; }
.bg-light { background-color: var(--bg-alt); }
.text-center { text-align: center; }

/* Navbar */
.navbar { position: fixed; width: 100%; background: white; z-index: 1000; border-bottom: 2px solid var(--accent-color); }
.nav-content { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--primary-color); }
.logo span { color: var(--accent-color); }
.nav-links { display: flex; list-style: none; gap: 2rem; }
.nav-links a { text-decoration: none; color: var(--text-main); font-weight: 600; }

/* Hero */
.hero { display: flex; align-items: center; padding: 150px 0 80px; gap: 3rem; }
.hero-text { flex: 1; }
.hero-text h1 { font-size: 3rem; color: var(--primary-color); line-height: 1.2; }
.highlight { border-bottom: 4px solid var(--accent-color); }
.tagline { font-size: 1.2rem; color: var(--accent-color); font-weight: 600; margin: 1rem 0; }
.hero-img img { width: 300px; height: 300px; border-radius: 20px; object-fit: cover; }

.btn { padding: 0.8rem 2rem; border-radius: 4px; text-decoration: none; font-weight: 700; transition: 0.3s; display: inline-block;}
.btn-primary { background: var(--accent-color); color: white; }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); }

/* Grids */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.skill-category { background: white; padding: 1.5rem; border-radius: 8px; border: 1px solid #e2e8f0; text-align: center; }
.skill-category h4 { color: var(--accent-color); margin-bottom: 0.5rem; }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.about-card { background: white; padding: 2rem; border-radius: 8px; }

/* Project Cards */
.project-card { background: white; padding: 2rem; border-radius: 8px; border-left: 5px solid var(--primary-color); }
.project-header { display: flex; justify-content: space-between; margin-bottom: 1rem; }
.date { font-size: 0.9rem; font-weight: bold; color: var(--accent-color); }
.tech-stack { margin-top: 1rem; display: flex; gap: 0.5rem; }
.tech-stack span { background: #ecfdf5; color: #065f46; padding: 0.2rem 0.6rem; border-radius: 4px; font-size: 0.75rem; font-weight: bold; }

/* Achievement Item */
.achievement-item { display: flex; align-items: center; gap: 1.5rem; padding: 1.2rem; background: white; border-radius: 8px; box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1); }
.achievement-item i { font-size: 1.8rem; color: var(--accent-color); }

.footer { background: var(--primary-color); color: white; padding: 50px 0; }
.social-icons a { color: white; font-size: 1.3rem; margin: 0 10px; transition: 0.3s; }
.social-icons a:hover { color: var(--accent-color); }

@media (max-width: 768px) {
    .hero { flex-direction: column-reverse; text-align: center; }
    .nav-links, .about-grid { display: none; }
    .about-grid { grid-template-columns: 1fr; display: grid;}
}