/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0d1117;
  --bg2:       #161b22;
  --bg3:       #1c2330;
  --accent:    #00d4ff;
  --accent2:   #0099bb;
  --green:     #3fb950;
  --orange:    #f0883e;
  --purple:    #bc8cff;
  --text:      #e6edf3;
  --text-muted:#8b949e;
  --border:    #30363d;
  --card-bg:   #161b22;
  --radius:    12px;
  --shadow:    0 8px 32px rgba(0,0,0,0.4);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: #fff; }
.accent { color: var(--accent); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.section-sub { text-align: center; color: var(--text-muted); margin-top: -2rem; margin-bottom: 3rem; font-size: 0.95rem; }

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 2.5rem;
  background: rgba(13,17,23,0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-logo { font-family:'Fira Code',monospace; font-size:1.5rem; font-weight:700; color:var(--text); }
.nav-logo .dot { color:var(--accent); }
.nav-links { display:flex; gap:1.75rem; list-style:none; }
.nav-links a {
  color:var(--text-muted); font-size:0.875rem; font-weight:500;
  transition:color 0.2s; position:relative; padding-bottom:2px;
}
.nav-links a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:2px; background:var(--accent); transition:width 0.3s; }
.nav-links a:hover { color:var(--text); }
.nav-links a:hover::after { width:100%; }
.hamburger { display:none; flex-direction:column; gap:5px; cursor:pointer; }
.hamburger span { width:24px; height:2px; background:var(--text); border-radius:2px; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: space-between;
  gap: 3rem; padding: 8rem 2.5rem 5rem;
  max-width: 1200px; margin: 0 auto;
  position: relative;
}
.hero-bg-grid {
  position: fixed; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(63,185,80,0.1); border: 1px solid rgba(63,185,80,0.3);
  color: var(--green); padding: 0.35rem 0.9rem; border-radius: 20px;
  font-size: 0.8rem; font-weight: 500; margin-bottom: 1rem;
  opacity: 0; animation: fadeUp 0.6s ease 0.1s forwards;
}
.badge-dot { width:8px; height:8px; background:var(--green); border-radius:50%; animation: pulse 2s infinite; }

.hero-content { flex:1; max-width:580px; }
.hero-greeting { font-family:'Fira Code',monospace; color:var(--accent); font-size:1rem; margin-bottom:0.5rem; opacity:0; animation:fadeUp 0.6s ease 0.2s forwards; }
.hero-name { font-size:clamp(2.5rem,6vw,4rem); font-weight:800; line-height:1.1; margin-bottom:0.8rem; opacity:0; animation:fadeUp 0.6s ease 0.3s forwards; letter-spacing:-1px; }
.hero-typewriter { font-family:'Fira Code',monospace; font-size:1.1rem; color:var(--text-muted); margin-bottom:1.5rem; min-height:1.8rem; opacity:0; animation:fadeUp 0.6s ease 0.4s forwards; }
.cursor { color:var(--accent); animation:blink 1s infinite; }
.hero-desc { color:var(--text-muted); font-size:0.975rem; max-width:490px; margin-bottom:2rem; opacity:0; animation:fadeUp 0.6s ease 0.5s forwards; }
.hero-desc strong { color:var(--text); }
.hero-cta { display:flex; gap:1rem; flex-wrap:wrap; margin-bottom:2.5rem; opacity:0; animation:fadeUp 0.6s ease 0.6s forwards; }
.hero-socials { display:flex; gap:1rem; opacity:0; animation:fadeUp 0.6s ease 0.7s forwards; }
.hero-socials a {
  width:40px; height:40px; display:flex; align-items:center; justify-content:center;
  border:1px solid var(--border); border-radius:50%; color:var(--text-muted); font-size:1.1rem;
  transition:all 0.2s;
}
.hero-socials a:hover { border-color:var(--accent); color:var(--accent); transform:translateY(-3px); }

.btn { display:inline-flex; align-items:center; gap:0.5rem; padding:0.75rem 1.75rem; border-radius:8px; font-size:0.9rem; font-weight:600; cursor:pointer; transition:all 0.2s; border:none; }
.btn-primary { background:var(--accent); color:#000; }
.btn-primary:hover { background:#fff; color:#000; transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,212,255,0.3); }
.btn-outline { background:transparent; color:var(--text); border:1px solid var(--border); }
.btn-outline:hover { border-color:var(--accent); color:var(--accent); transform:translateY(-2px); }

/* CODE CARD */
.hero-visual { flex:1; max-width:460px; opacity:0; animation:fadeIn 0.8s ease 0.5s forwards; }
.code-card { background:var(--bg2); border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow), 0 0 80px rgba(0,212,255,0.05); }
.code-card-header { background:var(--bg3); padding:0.75rem 1rem; display:flex; align-items:center; gap:0.5rem; }
.dot-red   { width:12px;height:12px;border-radius:50%;background:#ff5f57; }
.dot-yellow{ width:12px;height:12px;border-radius:50%;background:#febc2e; }
.dot-green { width:12px;height:12px;border-radius:50%;background:#28c840; }
.code-file { margin-left:0.5rem; font-family:'Fira Code',monospace; font-size:0.78rem; color:var(--text-muted); }
.code-body { padding:1.5rem; font-family:'Fira Code',monospace; font-size:0.8rem; line-height:2; white-space:pre; }
.kw  { color:#ff7b72; } .cls { color:#79c0ff; } .typ { color:#ffa657; }
.str { color:#a5d6ff; } .num { color:#79c0ff; } .cm  { color:#6e7681; }

.hero-float-cards { display:flex; gap:0.75rem; margin-top:1rem; flex-wrap:wrap; }
.float-card {
  background:var(--bg2); border:1px solid var(--border);
  padding:0.5rem 0.9rem; border-radius:8px;
  font-size:0.8rem; color:var(--text-muted);
  display:flex; align-items:center; gap:0.5rem;
}
.float-card i { color:var(--accent); }

.scroll-indicator { position:absolute; bottom:2rem; left:50%; transform:translateX(-50%); opacity:0; animation:fadeIn 1s ease 1.2s forwards; }
.scroll-indicator span { display:block; width:20px; height:30px; border:2px solid var(--border); border-radius:10px; position:relative; }
.scroll-indicator span::after { content:''; position:absolute; width:4px; height:6px; background:var(--accent); border-radius:2px; left:50%; top:5px; transform:translateX(-50%); animation:scrollDot 1.5s infinite; }

/* ===== STATS BANNER ===== */
.stats-banner {
  background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  display: flex; justify-content: center; align-items: center;
  padding: 2.5rem 2rem; gap: 0; flex-wrap: wrap;
}
.stat-item { text-align:center; padding:0.5rem 3rem; }
.stat-item p { font-size:0.8rem; color:var(--text-muted); text-transform:uppercase; letter-spacing:1px; margin-top:0.25rem; }
.stat-n { font-size:2.5rem; font-weight:800; color:var(--accent); font-family:'Fira Code',monospace; }
.stat-plus { font-size:1.5rem; font-weight:700; color:var(--accent); vertical-align:super; }
.stat-divider { width:1px; height:60px; background:var(--border); }

/* ===== SECTION ===== */
.section { padding: 6rem 0; }
.section-dark { background: var(--bg2); }
.section-title { font-size:clamp(1.8rem,4vw,2.5rem); font-weight:700; text-align:center; margin-bottom:1rem; }
.section-title::after { content:''; display:block; width:60px; height:3px; background:var(--accent); border-radius:2px; margin:0.75rem auto 0; }

/* ===== ABOUT ===== */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:3rem; align-items:start; margin-top:1rem; }
.about-text p { color:var(--text-muted); margin-bottom:1.1rem; font-size:0.95rem; }
.about-text strong { color:var(--text); }
.about-highlights { margin-top:1.5rem; display:flex; flex-direction:column; gap:0.6rem; }
.highlight-item { display:flex; align-items:center; gap:0.75rem; font-size:0.9rem; color:var(--text-muted); }
.highlight-item i { color:var(--green); }

.about-info-card { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius); padding:1.75rem; }
.info-row { display:flex; align-items:flex-start; gap:1rem; padding:0.75rem 0; border-bottom:1px solid var(--border); }
.info-row:last-of-type { border-bottom:none; }
.info-row > i { color:var(--accent); width:18px; text-align:center; margin-top:3px; flex-shrink:0; }
.info-row > div { display:flex; flex-direction:column; }
.info-label { font-size:0.72rem; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.5px; }
.info-row span, .info-row a { font-size:0.875rem; color:var(--text); }
.info-row a:hover { color:var(--accent); }
.info-availability { display:flex; align-items:center; gap:0.6rem; padding:0.75rem 0; font-size:0.85rem; color:var(--green); }
.avail-dot { width:8px; height:8px; background:var(--green); border-radius:50%; animation:pulse 2s infinite; }

/* ===== SERVICES ===== */
.services-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(240px,1fr)); gap:1.5rem; }
.service-card { background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); padding:1.75rem; transition:border-color 0.3s, transform 0.3s; }
.service-card:hover { border-color:var(--accent); transform:translateY(-4px); }
.service-icon { width:52px; height:52px; border-radius:12px; background:rgba(0,212,255,0.1); display:flex; align-items:center; justify-content:center; font-size:1.4rem; color:var(--accent); margin-bottom:1.25rem; }
.service-icon.gis   { background:rgba(188,140,255,0.1); color:var(--purple); }
.service-icon.db    { background:rgba(240,136,62,0.1);  color:var(--orange); }
.service-icon.ui    { background:rgba(63,185,80,0.1);   color:var(--green); }
.service-card h3 { font-size:1.05rem; font-weight:600; margin-bottom:0.75rem; }
.service-card > p { color:var(--text-muted); font-size:0.875rem; margin-bottom:1.25rem; }
.service-list { list-style:none; display:flex; flex-direction:column; gap:0.5rem; }
.service-list li { font-size:0.82rem; color:var(--text-muted); display:flex; align-items:center; gap:0.5rem; }
.service-list li::before { content:'▸'; color:var(--accent); }

/* ===== GIS SECTION ===== */
.gis-section { background: linear-gradient(135deg, #0d1117 0%, #0d1a24 100%); }
.gis-grid { display:grid; grid-template-columns:1fr 1fr; gap:4rem; align-items:center; }
.gis-badge { display:inline-flex; align-items:center; gap:0.5rem; background:rgba(0,212,255,0.1); border:1px solid rgba(0,212,255,0.3); color:var(--accent); padding:0.35rem 0.9rem; border-radius:20px; font-size:0.8rem; margin-bottom:1.25rem; }
.gis-text h2 { font-size:clamp(1.8rem,3.5vw,2.5rem); font-weight:800; line-height:1.2; margin-bottom:1rem; }
.gis-text > p { color:var(--text-muted); font-size:0.95rem; margin-bottom:2rem; }
.gis-features { display:flex; flex-direction:column; gap:1.25rem; }
.gis-feat { display:flex; gap:1rem; align-items:flex-start; }
.gf-icon { width:42px; height:42px; border-radius:10px; background:rgba(0,212,255,0.1); display:flex; align-items:center; justify-content:center; color:var(--accent); flex-shrink:0; }
.gis-feat strong { display:block; font-size:0.9rem; margin-bottom:0.2rem; }
.gis-feat p { color:var(--text-muted); font-size:0.82rem; margin:0; }

/* GIS RING */
.gis-visual { display:flex; justify-content:center; align-items:center; }
.gis-tech-ring { position:relative; width:300px; height:300px; }
.ring-center {
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  width:80px; height:80px; border-radius:50%;
  background:rgba(0,212,255,0.15); border:2px solid var(--accent);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  font-size:1.5rem; color:var(--accent); z-index:2;
}
.ring-center span { font-size:0.65rem; font-weight:600; margin-top:2px; }
.ring-item {
  position:absolute; width:58px; height:58px; border-radius:50%;
  background:var(--bg2); border:1px solid var(--border);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  font-size:1.1rem; color:var(--text-muted); transition:all 0.3s;
}
.ring-item span { font-size:0.55rem; margin-top:2px; }
.ring-item:hover { border-color:var(--accent); color:var(--accent); transform:scale(1.15); }
.r1 { top:0;   left:50%; transform:translateX(-50%); }
.r2 { top:15%; right:5%; }
.r3 { bottom:15%; right:5%; }
.r4 { bottom:0; left:50%; transform:translateX(-50%); }
.r5 { bottom:15%; left:5%; }
.r6 { top:15%; left:5%; }

/* ===== GIS CAPABILITIES ===== */
.gis-section { background: linear-gradient(180deg, #0d1117 0%, #0a1520 60%, #0d1117 100%); }
.gis-header { text-align:center; margin-bottom:3rem; }
.gis-badge { display:inline-flex; align-items:center; gap:0.5rem; background:rgba(0,212,255,0.1); border:1px solid rgba(0,212,255,0.3); color:var(--accent); padding:0.35rem 0.9rem; border-radius:20px; font-size:0.8rem; margin-bottom:1.25rem; }

.gis-tool-block { background:var(--bg2); border:1px solid var(--border); border-radius:var(--radius); padding:2rem; margin-bottom:1.75rem; transition:border-color 0.3s; }
.gis-tool-block:hover { border-color:rgba(0,212,255,0.25); }

.gis-tool-header { display:flex; gap:1.25rem; align-items:flex-start; margin-bottom:1.75rem; padding-bottom:1.25rem; border-bottom:1px solid var(--border); }
.gis-tool-header h3 { font-size:1.15rem; font-weight:700; margin-bottom:0.4rem; }
.gis-tool-header > div > p { color:var(--text-muted); font-size:0.875rem; }
.tool-label { font-size:0.7rem; font-weight:500; color:var(--accent); background:rgba(0,212,255,0.1); border:1px solid rgba(0,212,255,0.2); padding:0.15rem 0.5rem; border-radius:4px; font-family:'Fira Code',monospace; margin-left:0.5rem; vertical-align:middle; }

.gis-tool-icon { width:52px; height:52px; border-radius:12px; background:rgba(0,212,255,0.1); display:flex; align-items:center; justify-content:center; font-size:1.4rem; color:var(--accent); flex-shrink:0; }
.gis-tool-icon.potree  { background:rgba(240,136,62,0.12); color:var(--orange); }
.gis-tool-icon.geojson { background:rgba(63,185,80,0.12);  color:var(--green); }
.gis-tool-icon.formats { background:rgba(188,140,255,0.12); color:var(--purple); }
.gis-tool-header.cesium  { border-bottom-color:rgba(0,212,255,0.2); }
.gis-tool-header.potree  .tool-label { color:var(--orange); background:rgba(240,136,62,0.1); border-color:rgba(240,136,62,0.25); }
.gis-tool-header.geojson .tool-label { color:var(--green);  background:rgba(63,185,80,0.1);  border-color:rgba(63,185,80,0.25); }
.gis-tool-header.formats .tool-label { color:var(--purple); background:rgba(188,140,255,0.1); border-color:rgba(188,140,255,0.25); }

/* Cesium caps */
.gis-cap-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:1rem; }
.gis-cap-card { background:var(--bg3); border:1px solid var(--border); border-radius:10px; padding:1.1rem; transition:border-color 0.2s, transform 0.2s; }
.gis-cap-card:hover { border-color:var(--accent); transform:translateY(-3px); }
.gis-cap-card > i { font-size:1.3rem; color:var(--accent); margin-bottom:0.6rem; display:block; }
.gis-cap-card strong { display:block; font-size:0.875rem; margin-bottom:0.35rem; }
.gis-cap-card p { color:var(--text-muted); font-size:0.78rem; line-height:1.5; margin:0; }

/* Potree pipeline */
.potree-pipeline { display:flex; align-items:center; gap:0; flex-wrap:wrap; justify-content:center; margin-top:0.5rem; }
.pipe-step { display:flex; flex-direction:column; align-items:center; text-align:center; padding:1rem; min-width:150px; flex:1; }
.pipe-icon { width:52px; height:52px; border-radius:50%; background:rgba(240,136,62,0.12); border:2px solid rgba(240,136,62,0.3); display:flex; align-items:center; justify-content:center; font-size:1.2rem; color:var(--orange); margin-bottom:0.75rem; }
.pipe-step strong { font-size:0.875rem; margin-bottom:0.35rem; display:block; }
.pipe-step span { color:var(--text-muted); font-size:0.75rem; line-height:1.5; }
.pipe-arrow { color:var(--border); font-size:1.2rem; padding:0 0.25rem; flex-shrink:0; }

/* GeoJSON */
.gis-two-col { display:grid; grid-template-columns:1.2fr 1fr; gap:1.75rem; }
.geojson-showcase { display:grid; grid-template-columns:1fr 1fr; gap:1.25rem; align-items:start; }
.geojson-code { background:var(--bg); border:1px solid var(--border); border-radius:10px; overflow:hidden; }
.geojson-body { padding:1rem; font-family:'Fira Code',monospace; font-size:0.72rem; line-height:1.9; white-space:pre-wrap; word-break:break-all; color:var(--text); overflow-x:hidden; }
.gj-key { color:#79c0ff; } .gj-str { color:#a5d6ff; } .gj-num { color:#ffa657; }
.geojson-features { display:flex; flex-direction:column; gap:0.6rem; }
.gj-feat { display:flex; align-items:center; gap:0.75rem; font-size:0.82rem; color:var(--text-muted); background:var(--bg3); border:1px solid var(--border); border-radius:8px; padding:0.6rem 0.85rem; transition:border-color 0.2s; }
.gj-feat:hover { border-color:var(--green); }
.gj-feat i { color:var(--green); width:16px; text-align:center; flex-shrink:0; }

/* Formats */
.formats-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:0.75rem; margin-bottom:1rem; }
.format-card { background:var(--bg3); border:1px solid var(--border); border-radius:10px; padding:1rem; transition:border-color 0.2s, transform 0.2s; }
.format-card:hover { transform:translateY(-3px); }
.format-card.shp:hover { border-color:rgba(0,212,255,0.4); }
.format-card.kml:hover { border-color:rgba(240,136,62,0.4); }
.format-card.gj:hover  { border-color:rgba(63,185,80,0.4); }
.fmt-top { display:flex; justify-content:space-between; align-items:center; margin-bottom:0.6rem; }
.fmt-top > i { font-size:1.1rem; color:var(--text-muted); }
.fmt-badge { font-size:0.65rem; font-weight:700; padding:0.15rem 0.45rem; border-radius:4px; font-family:'Fira Code',monospace; background:rgba(0,212,255,0.15); color:var(--accent); border:1px solid rgba(0,212,255,0.3); }
.fmt-badge.kml { background:rgba(240,136,62,0.15); color:var(--orange); border-color:rgba(240,136,62,0.3); }
.fmt-badge.gj  { background:rgba(63,185,80,0.15);  color:var(--green);  border-color:rgba(63,185,80,0.3); }
.format-card strong { display:block; font-size:0.82rem; margin-bottom:0.35rem; }
.format-card p { color:var(--text-muted); font-size:0.73rem; line-height:1.5; margin-bottom:0.6rem; }
.fmt-actions { display:flex; gap:0.5rem; }
.fmt-actions span { font-size:0.68rem; color:var(--text-muted); background:var(--bg2); border:1px solid var(--border); border-radius:4px; padding:0.15rem 0.45rem; display:flex; align-items:center; gap:0.3rem; }

.map-libs-row { display:flex; align-items:center; gap:0.6rem; flex-wrap:wrap; padding-top:0.75rem; border-top:1px solid var(--border); }
.ml-label { font-size:0.75rem; color:var(--text-muted); }
.ml-tag { font-size:0.72rem; font-weight:600; padding:0.2rem 0.6rem; border-radius:4px; font-family:'Fira Code',monospace; }
.cesium-tag  { background:rgba(0,212,255,0.1);  color:var(--accent); border:1px solid rgba(0,212,255,0.3); }
.mapbox-tag  { background:rgba(240,136,62,0.1); color:var(--orange); border:1px solid rgba(240,136,62,0.3); }
.leaflet-tag { background:rgba(63,185,80,0.1);  color:var(--green);  border:1px solid rgba(63,185,80,0.3); }
.google-tag  { background:rgba(188,140,255,0.1);color:var(--purple); border:1px solid rgba(188,140,255,0.3); }

@media (max-width:900px) {
  .gis-two-col { grid-template-columns:1fr; }
  .geojson-showcase { grid-template-columns:1fr; }
  .formats-grid { grid-template-columns:1fr; }
  .potree-pipeline { flex-direction:column; }
  .pipe-arrow { transform:rotate(90deg); }
}

/* ===== AI SECTION ===== */
.ai-header { text-align:center; margin-bottom:3rem; }
.ai-badge { display:inline-flex; align-items:center; gap:0.5rem; background:rgba(188,140,255,0.1); border:1px solid rgba(188,140,255,0.35); color:var(--purple); padding:0.35rem 0.9rem; border-radius:20px; font-size:0.8rem; margin-bottom:1.25rem; }

.ai-grid { display:grid; grid-template-columns:1fr 1fr; gap:2rem; align-items:start; }

.ai-intro-card { background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); padding:1.75rem; }
.ai-intro-top { display:flex; gap:1.25rem; align-items:flex-start; margin-bottom:1.75rem; padding-bottom:1.25rem; border-bottom:1px solid var(--border); }
.ai-logo-box { width:52px; height:52px; border-radius:12px; background:rgba(188,140,255,0.12); border:1px solid rgba(188,140,255,0.3); display:flex; align-items:center; justify-content:center; font-size:1.5rem; color:var(--purple); flex-shrink:0; }
.ai-intro-top h3 { font-size:1.05rem; font-weight:700; margin-bottom:0.4rem; }
.ai-intro-top p { color:var(--text-muted); font-size:0.85rem; line-height:1.6; }
.ai-intro-top strong { color:var(--purple); }

.ai-caps { display:flex; flex-direction:column; gap:1rem; }
.ai-cap { display:flex; gap:1rem; align-items:flex-start; }
.ai-cap > i { width:36px; height:36px; border-radius:8px; background:rgba(188,140,255,0.1); display:flex; align-items:center; justify-content:center; color:var(--purple); flex-shrink:0; font-size:0.9rem; }
.ai-cap strong { display:block; font-size:0.875rem; margin-bottom:0.2rem; }
.ai-cap p { color:var(--text-muted); font-size:0.78rem; margin:0; line-height:1.5; }

.ai-right { display:flex; flex-direction:column; gap:1.25rem; }
.ai-code-card { border-color:rgba(188,140,255,0.3); box-shadow:0 0 40px rgba(188,140,255,0.05); }

.ai-why-card { background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); padding:1.25rem; }
.ai-why-card h4 { font-size:0.9rem; font-weight:600; margin-bottom:1rem; display:flex; align-items:center; gap:0.6rem; }
.ai-why-card h4 i { color:var(--purple); }
.ai-why-list { display:flex; flex-direction:column; gap:0.6rem; }
.why-item { display:flex; gap:0.9rem; align-items:flex-start; }
.why-num { font-family:'Fira Code',monospace; font-size:0.7rem; color:var(--purple); font-weight:700; background:rgba(188,140,255,0.1); border:1px solid rgba(188,140,255,0.3); width:28px; height:22px; border-radius:4px; display:flex; align-items:center; justify-content:center; flex-shrink:0; margin-top:2px; }
.why-item p { color:var(--text-muted); font-size:0.8rem; margin:0; line-height:1.5; }

.ai-tech-row { display:flex; flex-wrap:wrap; gap:0.5rem; }
.ai-tech-tag { display:inline-flex; align-items:center; gap:0.4rem; font-size:0.78rem; font-weight:500; padding:0.35rem 0.75rem; border-radius:6px; background:rgba(188,140,255,0.08); border:1px solid rgba(188,140,255,0.25); color:var(--purple); font-family:'Fira Code',monospace; transition:all 0.2s; }
.ai-tech-tag:hover { background:rgba(188,140,255,0.15); border-color:rgba(188,140,255,0.5); }

.service-icon.ai { background:rgba(188,140,255,0.1); color:var(--purple); }
.ai-service:hover { border-color:rgba(188,140,255,0.4); }

.skill-cat-icon.ai-icon { background:rgba(188,140,255,0.1); color:var(--purple); }
.tag-ai { border-color:rgba(188,140,255,0.3) !important; color:var(--purple) !important; background:rgba(188,140,255,0.05) !important; }

@media (max-width:900px) { .ai-grid { grid-template-columns:1fr; } }

/* ===== SKILLS ===== */
.skills-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(200px,1fr)); gap:1.25rem; }
.skill-category { background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); padding:1.5rem; transition:border-color 0.3s, transform 0.3s; }
.skill-category:hover { border-color:var(--accent); transform:translateY(-4px); }
.skill-cat-header { display:flex; align-items:center; gap:0.75rem; margin-bottom:1.25rem; }
.skill-cat-icon { width:40px; height:40px; border-radius:10px; background:rgba(0,212,255,0.1); display:flex; align-items:center; justify-content:center; color:var(--accent); flex-shrink:0; }
.skill-cat-icon.gis   { background:rgba(188,140,255,0.1); color:var(--purple); }
.skill-cat-icon.db    { background:rgba(240,136,62,0.1);  color:var(--orange); }
.skill-cat-icon.ui    { background:rgba(63,185,80,0.1);   color:var(--green); }
.skill-cat-icon.tools { background:rgba(255,123,114,0.1); color:#ff7b72; }
.skill-cat-header h3 { font-size:0.95rem; font-weight:600; }
.skill-tags { display:flex; flex-wrap:wrap; gap:0.45rem; }
.skill-tags span { background:var(--bg3); border:1px solid var(--border); padding:0.3rem 0.65rem; border-radius:6px; font-size:0.75rem; color:var(--text-muted); transition:all 0.2s; }
.skill-tags span:hover { border-color:var(--accent); color:var(--text); }
.skill-tags .tag-main { border-color:rgba(0,212,255,0.2); color:var(--text); }
.skill-tags .tag-accent { border-color:rgba(188,140,255,0.3); color:var(--purple); background:rgba(188,140,255,0.05); }

/* ===== TIMELINE ===== */
.timeline { position:relative; max-width:800px; margin:0 auto; padding-left:2rem; }
.timeline::before { content:''; position:absolute; left:0; top:0; bottom:0; width:2px; background:var(--border); border-radius:2px; }

.timeline-item { position:relative; padding-bottom:2.5rem; padding-left:2rem; }
.timeline-item:last-child { padding-bottom:0; }

.timeline-dot {
  position:absolute; left:-2.9rem; top:0.25rem;
  width:36px; height:36px; border-radius:50%;
  background:var(--bg2); border:2px solid var(--accent);
  display:flex; align-items:center; justify-content:center;
  color:var(--accent); font-size:0.85rem; z-index:1;
}
.timeline-dot.edu { border-color:var(--purple); color:var(--purple); }

.timeline-content { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius); padding:1.5rem; transition:border-color 0.3s; }
.timeline-content:hover { border-color:rgba(0,212,255,0.3); }

.tl-header { display:flex; justify-content:space-between; align-items:flex-start; gap:1rem; margin-bottom:0.75rem; flex-wrap:wrap; }
.tl-header h3 { font-size:1rem; font-weight:600; }
.tl-company { display:block; color:var(--accent); font-size:0.82rem; margin-top:0.2rem; }
.tl-date { background:var(--bg3); border:1px solid var(--border); padding:0.2rem 0.7rem; border-radius:20px; font-size:0.75rem; color:var(--text-muted); white-space:nowrap; }
.timeline-content > p { color:var(--text-muted); font-size:0.875rem; margin-bottom:1rem; }
.tl-tags { display:flex; flex-wrap:wrap; gap:0.4rem; }
.tl-tags span { background:var(--bg3); border:1px solid var(--border); padding:0.2rem 0.55rem; border-radius:4px; font-size:0.72rem; color:var(--text-muted); font-family:'Fira Code',monospace; }

/* ===== PROJECTS ===== */
.projects-grid { display:grid; grid-template-columns:repeat(auto-fit, minmax(270px,1fr)); gap:1.5rem; }
.project-card { background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); padding:1.75rem; transition:border-color 0.3s, transform 0.3s; position:relative; display:flex; flex-direction:column; gap:0.6rem; }
.project-card:hover { border-color:var(--accent); transform:translateY(-4px); box-shadow:var(--shadow); }
.project-card.featured { border-color:rgba(0,212,255,0.25); background:linear-gradient(135deg, #161b22, #0d1a24); }
.project-badge { position:absolute; top:1rem; right:1rem; background:var(--accent); color:#000; font-size:0.68rem; font-weight:700; padding:0.2rem 0.6rem; border-radius:20px; text-transform:uppercase; letter-spacing:1px; }
.project-top { display:flex; justify-content:space-between; align-items:flex-start; }
.project-icon { font-size:1.75rem; color:var(--accent); opacity:0.9; }
.project-links a { color:var(--text-muted); font-size:1.2rem; transition:color 0.2s; }
.project-links a:hover { color:var(--accent); }
.project-card h3 { font-size:1.05rem; font-weight:600; }
.project-type { font-size:0.75rem; color:var(--accent); font-family:'Fira Code',monospace; opacity:0.8; }
.project-card > p { color:var(--text-muted); font-size:0.875rem; flex:1; }
.project-tags { display:flex; flex-wrap:wrap; gap:0.4rem; margin-top:0.5rem; }
.project-tags span { background:rgba(0,212,255,0.07); border:1px solid rgba(0,212,255,0.2); color:var(--accent); font-size:0.7rem; padding:0.2rem 0.55rem; border-radius:4px; font-family:'Fira Code',monospace; }

/* ===== CONTACT ===== */
.contact-grid { display:grid; grid-template-columns:1fr 1.3fr; gap:3rem; align-items:start; }
.contact-intro { margin-bottom:1rem; }
.contact-intro h3 { font-size:1.3rem; font-weight:700; margin-bottom:0.5rem; }
.contact-intro p { color:var(--text-muted); font-size:0.9rem; }
.contact-info { display:flex; flex-direction:column; gap:1rem; }
.contact-item { display:flex; align-items:flex-start; gap:1rem; background:var(--card-bg); border:1px solid var(--border); border-radius:10px; padding:1rem 1.25rem; transition:border-color 0.2s; }
.contact-item:hover { border-color:var(--accent); }
.contact-icon { width:42px; height:42px; flex-shrink:0; background:rgba(0,212,255,0.1); border-radius:8px; display:flex; align-items:center; justify-content:center; color:var(--accent); }
.contact-label { display:block; font-size:0.72rem; color:var(--text-muted); text-transform:uppercase; letter-spacing:0.5px; margin-bottom:0.15rem; }
.contact-item a { color:var(--text); font-size:0.875rem; }
.contact-item a:hover { color:var(--accent); }
.contact-form { display:flex; flex-direction:column; gap:1rem; background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius); padding:2rem; }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.form-group input, .form-group textarea {
  width:100%; background:var(--bg); border:1px solid var(--border); border-radius:8px;
  padding:0.85rem 1rem; color:var(--text); font-size:0.875rem; font-family:'Inter',sans-serif;
  transition:border-color 0.2s, box-shadow 0.2s; resize:vertical;
}
.form-group input:focus, .form-group textarea:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(0,212,255,0.1); }
.form-group input::placeholder, .form-group textarea::placeholder { color:var(--text-muted); }
.form-status { padding:0.75rem 1rem; border-radius:8px; font-size:0.875rem; display:flex; align-items:center; gap:0.5rem; margin-bottom:0.5rem; }
.form-status.success { background:rgba(63,185,80,0.1); border:1px solid rgba(63,185,80,0.3); color:var(--green); }
.form-status.error   { background:rgba(255,123,114,0.1); border:1px solid rgba(255,123,114,0.3); color:#ff7b72; }
.field-error { display:block; font-size:0.75rem; color:#ff7b72; margin-top:0.25rem; }
input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color:#ff7b72 !important; }

/* ===== HIRE ME BANNER ===== */
.hire-banner {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0a1520 0%, #0d1117 50%, #0a1a0a 100%);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 6rem 0;
}
.hire-bg-glow {
  position: absolute; top: -100px; left: 50%; transform: translateX(-50%);
  width: 600px; height: 400px;
  background: radial-gradient(ellipse, rgba(0,212,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hire-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 4rem; align-items: center; }

.hire-avail { display:inline-flex; align-items:center; gap:0.5rem; background:rgba(63,185,80,0.1); border:1px solid rgba(63,185,80,0.3); color:var(--green); padding:0.35rem 0.9rem; border-radius:20px; font-size:0.8rem; margin-bottom:1.25rem; }
.hire-dot { width:8px; height:8px; background:var(--green); border-radius:50%; animation:pulse 2s infinite; }

.hire-left h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 800; line-height: 1.2; margin-bottom: 1.1rem; }
.hire-left > p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; margin-bottom: 1.75rem; }
.hire-left strong { color: var(--text); }

.hire-points { display: flex; flex-direction: column; gap: 0.65rem; margin-bottom: 2rem; }
.hire-point { display: flex; align-items: flex-start; gap: 0.75rem; font-size: 0.875rem; color: var(--text-muted); }
.hire-point i { color: var(--green); margin-top: 3px; flex-shrink: 0; }
.hire-point span strong { color: var(--text); }

.hire-cta-row { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.btn-lg { padding: 0.875rem 2rem; font-size: 0.95rem; }
.btn-whatsapp { background: #25d366; color: #fff; }
.btn-whatsapp:hover { background: #1da851; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(37,211,102,0.3); }

.hire-card {
  background: var(--bg2); border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--radius); padding: 1.75rem;
  box-shadow: 0 0 60px rgba(0,212,255,0.05);
}
.hire-card-top { display: flex; gap: 1rem; align-items: center; margin-bottom: 1.5rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--border); }
.hire-avatar { width: 52px; height: 52px; border-radius: 50%; background: rgba(0,212,255,0.1); border: 2px solid rgba(0,212,255,0.3); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--accent); flex-shrink: 0; }
.hire-card-top h3 { font-size: 1.05rem; font-weight: 700; }
.hire-card-top span { font-size: 0.78rem; color: var(--text-muted); }

.hire-skills-list { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 1.5rem; }
.hsl-item { display: flex; align-items: center; gap: 0.75rem; font-size: 0.83rem; color: var(--text-muted); background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; padding: 0.6rem 0.85rem; }
.hsl-item i { color: var(--accent); width: 16px; flex-shrink: 0; }
.hsl-item span:nth-child(2) { flex: 1; }
.hsl-badge { font-family: 'Fira Code', monospace; font-size: 0.68rem; background: rgba(0,212,255,0.1); border: 1px solid rgba(0,212,255,0.25); color: var(--accent); padding: 0.15rem 0.5rem; border-radius: 4px; white-space: nowrap; }
.new-badge { background: rgba(188,140,255,0.12); border-color: rgba(188,140,255,0.35); color: var(--purple); }

.hire-contact-quick { display: flex; flex-direction: column; gap: 0.5rem; padding-top: 1.25rem; border-top: 1px solid var(--border); }
.hire-contact-quick a { display: flex; align-items: center; gap: 0.6rem; font-size: 0.82rem; color: var(--text-muted); transition: color 0.2s; }
.hire-contact-quick a i { color: var(--accent); width: 16px; }
.hire-contact-quick a:hover { color: var(--accent); }

@media (max-width: 900px) {
  .hire-inner { grid-template-columns: 1fr; }
  .hire-right { display: none; }
}

/* ===== FOOTER ===== */
.footer { background:var(--bg2); border-top:1px solid var(--border); padding:2.5rem; }
.footer-inner { max-width:600px; margin:0 auto; text-align:center; }
.footer-logo { font-family:'Fira Code',monospace; font-size:1.5rem; font-weight:700; margin-bottom:0.75rem; }
.footer p { color:var(--text-muted); font-size:0.875rem; }
.footer-links { display:flex; justify-content:center; gap:1rem; margin:1rem 0; }
.footer-links a { width:38px; height:38px; display:flex; align-items:center; justify-content:center; border:1px solid var(--border); border-radius:50%; color:var(--text-muted); transition:all 0.2s; }
.footer-links a:hover { border-color:var(--accent); color:var(--accent); }
.footer-copy { font-size:0.78rem; margin-top:0.25rem; }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp  { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeIn  { from{opacity:0} to{opacity:1} }
@keyframes blink   { 0%,100%{opacity:1} 50%{opacity:0} }
@keyframes pulse   { 0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(63,185,80,0.4)} 50%{opacity:.8;box-shadow:0 0 0 6px rgba(63,185,80,0)} }
@keyframes scrollDot { 0%{top:5px;opacity:1} 100%{top:16px;opacity:0} }

.reveal { opacity:0; transform:translateY(30px); transition:opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero { flex-direction:column; text-align:center; padding-top:8rem; }
  .hero-content { max-width:100%; }
  .hero-visual { max-width:100%; }
  .hero-cta, .hero-socials { justify-content:center; }
  .about-grid, .gis-grid, .contact-grid { grid-template-columns:1fr; }
  .gis-visual { display:none; }
}
@media (max-width: 640px) {
  .nav { padding:1rem 1.25rem; }
  .nav-links { display:none; flex-direction:column; position:absolute; top:100%; left:0; right:0; background:var(--bg2); border-top:1px solid var(--border); padding:1rem 1.5rem; gap:1rem; }
  .nav-links.open { display:flex; }
  .hamburger { display:flex; }
  .hero { padding:7rem 1.25rem 3rem; }
  .section { padding:4rem 0; }
  .stats-banner { gap:0; }
  .stat-item { padding:0.5rem 1.5rem; }
  .stat-divider { display:none; }
  .form-row { grid-template-columns:1fr; }
  .timeline { padding-left:1rem; }
  .timeline-dot { left:-1.9rem; width:30px; height:30px; font-size:0.75rem; }
}