:root {
    --bg: #030712;
    --card: rgba(17, 24, 39, 0.7);
    --border: rgba(255, 255, 255, 0.08);
    --text: #f9fafb;
    --text-muted: #9ca3af;
    --accent: #38bdf8;
    --gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
}

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

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    margin: 0;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background Glow */
.glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 800px;
    background: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 10%;
    position: sticky;
    top: 0;
    background: rgba(3, 7, 18, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.logo { font-weight: 800; font-size: 1.2rem; }
.logo span { color: var(--accent); }
.links a { text-decoration: none; color: var(--text-muted); margin-left: 2rem; font-size: 0.9rem; transition: 0.3s; }
.links a:hover { color: var(--accent); }
.btn-contact { background: var(--text); color: var(--bg) !important; padding: 0.5rem 1rem; border-radius: 8px; font-weight: 600; }

/* Header */
header {
    text-align: center;
    padding: 8rem 10% 6rem;
    max-width: 1000px;
    margin: 0 auto;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 99px;
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.2);
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

h1 { font-size: 4rem; font-weight: 800; letter-spacing: -3px; line-height: 1.1; margin-bottom: 1.5rem; }
.gradient-text { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { color: var(--text-muted); font-size: 1.25rem; max-width: 600px; margin: 0 auto; }

/* Sections */
.section-title { text-align: center; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 3px; color: var(--text-muted); margin-bottom: 3rem; }

/* Stack Grid */
.stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    padding: 0 10% 6rem;
}

.stack-card {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 2rem;
    border-radius: 16px;
    backdrop-filter: blur(12px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.stack-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.1);
}

.icon { color: var(--accent); margin-bottom: 1.5rem; width: 28px; height: 28px; }
.stack-card h3 { font-size: 1rem; margin: 0 0 0.5rem 0; }
.stack-card p { color: var(--text-muted); margin: 0; font-size: 0.9rem; }

/* Projects */
#projects { padding: 6rem 10%; background: rgba(255,255,255, 0.02); }
.project-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 3.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.tag { color: var(--accent); font-weight: 700; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; }
.project-card h3 { font-size: 2rem; margin: 1rem 0; letter-spacing: -1px; }
.project-card p { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 2rem; }
.project-link { color: var(--text); text-decoration: none; font-weight: 600; display: flex; align-items: center; gap: 8px; }

footer { text-align: center; padding: 5rem; color: var(--text-muted); font-size: 0.8rem; border-top: 1px solid var(--border); }

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    nav { padding: 1.5rem 5%; }
    .project-card { padding: 2rem; }
}