:root {
    --bg: #0b1020;
    --bg-soft: #121a30;
    --card: rgba(255, 255, 255, 0.08);
    --text: #e9edff;
    --muted: #a7b0d3;
    --primary: #6f8cff;
    --secondary: #20d3c2;
    --danger: #ff6b6b;
    --success: #3ddc97;
    --border: rgba(255, 255, 255, 0.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: radial-gradient(circle at top right, #1a2450, var(--bg) 60%);
    color: var(--text);
    line-height: 1.6;
}
.container { width: min(1100px, 92%); margin-inline: auto; }
.section { padding: 90px 0; }
.alt-section { background: rgba(255,255,255,0.02); }
.site-header {
    position: sticky; top: 0; z-index: 999;
    backdrop-filter: blur(12px);
    background: rgba(11,16,32,.75);
    border-bottom: 1px solid var(--border);
}
.nav { position: relative; display:flex; align-items:center; justify-content:space-between; min-height:70px; }
.brand { color:#fff; text-decoration:none; font-weight:700; font-size:1.1rem; }
.nav-links { display:flex; gap:20px; list-style:none; margin:0; padding:0; }
.nav-link { color:var(--muted); text-decoration:none; padding:8px 12px; border-radius:999px; transition:.25s; }
.nav-link:hover,.nav-link.active { color:#fff; background:rgba(255,255,255,.1); }
.nav-toggle { display:none; background:none; border:none; color:#fff; font-size:1.4rem; }
.hero-grid { display:grid; grid-template-columns:1.3fr .9fr; gap:30px; align-items:center; }
.badge { display:inline-block; background:rgba(111,140,255,.2); color:#cfd7ff; border:1px solid var(--border); padding:7px 14px; border-radius:999px; font-size:.85rem; }
h1 { font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.2; margin: 16px 0; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin-top:0; }
.section-text { color:var(--muted); max-width:760px; }
.section-head { margin-bottom: 28px; }
.section-head p { color: var(--muted); margin: 0; max-width: 640px; }
.hero-card, .project-card, .timeline-card, .cta-box, .contact-form, .project-detail {
    background: var(--card); border: 1px solid var(--border); border-radius: 18px; backdrop-filter: blur(10px);
}
.hero-card { padding:24px; }
.hero-actions { display:flex; flex-wrap:wrap; gap:12px; margin-top:24px; }
.btn { text-decoration:none; padding:11px 18px; border-radius:12px; border:1px solid var(--border); color:#fff; display:inline-block; transition:.25s; cursor:pointer; }
.btn-primary { background: linear-gradient(135deg,var(--primary),#4e67cf); border:none; }
.btn-secondary { background: linear-gradient(135deg,var(--secondary),#0f9f95); border:none; }
.btn-ghost { background:transparent; }
.btn:hover { transform: translateY(-2px); }
.skills-grid { display:flex; flex-wrap:wrap; gap:12px; }
.skill-chip { background:rgba(255,255,255,.07); border:1px solid var(--border); padding:10px 14px; border-radius:12px; }
.projects-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:20px; }
.project-card { overflow:hidden; transition:.3s; }
.project-card:hover { transform:translateY(-5px); border-color:rgba(111,140,255,.7); }
.project-thumb img { width:100%; height:180px; object-fit:cover; display:block; }
.project-content { padding:16px; }
.project-content p, small { color:var(--muted); }
.project-links { margin-top:10px; display:flex; gap:12px; flex-wrap:wrap; align-items:center; }
.project-links a { color:#c9d3ff; text-decoration:none; }
.link-soon { color: var(--muted); font-size: 0.9rem; }
.social-placeholder { color: var(--muted); font-size: 0.95rem; }
.timeline { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.timeline-card { padding:22px; }
.contact-form { padding:24px; max-width:760px; }
.input-group { margin-bottom:16px; display:flex; flex-direction:column; gap:8px; }
input, textarea {
    width:100%; padding:12px; border-radius:10px; border:1px solid var(--border);
    background:rgba(0,0,0,.2); color:#fff;
}
input:focus, textarea:focus { outline:2px solid rgba(111,140,255,.45); }
.cta-section { padding-top:20px; }
.cta-box { text-align:center; padding:32px; }
.site-footer { border-top:1px solid var(--border); padding-top:40px; background:rgba(0,0,0,.25); }
.footer-grid { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.social-list { list-style:none; padding:0; margin:0; display:grid; gap:8px; }
.social-list a { color:var(--muted); text-decoration:none; }
.footer-bottom { padding:25px 0; color:var(--muted); font-size:.9rem; }
.alert { padding:12px; border-radius:10px; margin-bottom:14px; }
.alert.success { background:rgba(61,220,151,.2); border:1px solid rgba(61,220,151,.5); }
.alert.error { background:rgba(255,107,107,.2); border:1px solid rgba(255,107,107,.5); }
.filter-wrap { display:flex; gap:10px; flex-wrap:wrap; }
.filter-btn {
    border:1px solid var(--border); background:rgba(255,255,255,.04); color:#fff;
    padding:8px 14px; border-radius:999px; cursor:pointer;
}
.filter-btn.active { background:var(--primary); border-color:transparent; }
.empty-state {
    padding:28px; text-align:center; color:var(--muted);
    border:1px dashed var(--border); border-radius:16px; grid-column:1/-1;
}
.scroll-top, .whatsapp-float {
    position:fixed; right:20px; width:44px; height:44px; border-radius:50%;
    display:grid; place-items:center; color:#fff; text-decoration:none; border:1px solid var(--border);
}
.scroll-top { bottom:78px; background:#2c3f7a; opacity:0; pointer-events:none; transition:.2s; }
.scroll-top.show { opacity:1; pointer-events:auto; }
.whatsapp-float { bottom:24px; background:#1ca67a; }
.reveal { opacity:0; transform:translateY(20px); transition:.5s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }
.project-detail { padding:22px; }
.project-detail img { width:100%; border-radius:12px; margin-bottom:20px; }
@media (max-width:900px){
    .hero-grid, .timeline, .footer-grid { grid-template-columns:1fr; }
}
@media (max-width:760px){
    .nav-toggle { display:block; }
    .nav-links {
        position:absolute; top:70px; right:4%; left:4%; background:#121a30; border:1px solid var(--border);
        border-radius:12px; flex-direction:column; padding:10px; display:none;
    }
    .nav-links.open { display:flex; }
}