:root {
    --bg: #0b0e14;
    --card-bg: #151921;
    --accent: #00d4ff;
    --text: #e0e6ed;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--bg); color: var(--text); font-family: 'Inter', sans-serif; scroll-behavior: smooth; }

nav { display: flex; justify-content: space-between; padding: 1.5rem 8%; align-items: center; position: fixed; width: 100%; top: 0; background: rgba(11, 14, 20, 0.9); z-index: 100; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--accent); }
ul { display: flex; list-style: none; }
li { margin-left: 25px; }
a { text-decoration: none; color: inherit; font-size: 0.9rem; transition: 0.3s; }
a:hover { color: var(--accent); }

.hero { height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; }
h1 { font-size: clamp(2.5rem, 8vw, 4.5rem); margin-bottom: 10px; }
.highlight { color: var(--accent); }
#typing-text { border-right: 2px solid var(--accent); padding-right: 5px; font-weight: bold; color: var(--accent); }

.btn { display: inline-block; margin-top: 30px; padding: 12px 30px; border: 1px solid var(--accent); color: var(--accent); border-radius: 4px; transition: 0.4s; }
.btn:hover { background: var(--accent); color: var(--bg); }

#about { padding: 100px 8%; background: var(--card-bg); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin-top: 40px; }
.card { background: var(--bg); padding: 30px; border-radius: 8px; border-bottom: 3px solid var(--accent); }
h2 { font-size: 2rem; text-align: center; }