:root {
  /* Palette from ui-ux-pro-max design system: Dark Mode (OLED), orange + green */
  --bg: #0f172a;
  --bg-2: #0b1120;
  --card: #192134;
  --card-2: #1e293b;
  --primary: #ea580c;      /* orange */
  --primary-2: #f97316;
  --accent: #10b981;       /* green (Maps CTA) */
  --accent-2: #059669;
  --text: #f8fafc;
  --muted: #94a3b8;
  --border: rgba(255, 255, 255, .09);
  --border-strong: rgba(255, 255, 255, .16);
  --danger: #f87171;

  --grad: linear-gradient(120deg, #f97316 0%, #ea580c 60%, #059669 130%);
  --grad-text: linear-gradient(120deg, #fb923c, #f97316 45%, #34d399);

  --radius: 18px;
  --radius-lg: 26px;
  --shadow: 0 20px 50px rgba(0, 0, 0, .5);
  --shadow-glow: 0 20px 60px rgba(234, 88, 12, .28);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Sora", var(--font);
}

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- background decor ---- */
.bg-decor { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .28; animation: float 20s ease-in-out infinite; }
.glow-1 { width: 520px; height: 520px; background: #ea580c; top: -160px; left: -100px; }
.glow-2 { width: 460px; height: 460px; background: #059669; top: 10%; right: -140px; animation-delay: -8s; }
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 70%);
}
@keyframes float { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(24px,-32px) scale(1.08); } }
@media (prefers-reduced-motion: reduce) { .glow { animation: none; } }

a { color: var(--primary-2); }

/* ---- header ---- */
.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  max-width: 1100px; margin: 0 auto;
}
.brand {
  font-family: var(--font-display); font-weight: 800; font-size: 1.12rem;
  text-decoration: none; color: var(--text); display: inline-flex; align-items: center; gap: .55rem;
}
.brand-mark { color: var(--primary-2); filter: drop-shadow(0 0 10px rgba(249,115,22,.55)); }
.site-header nav { display: flex; align-items: center; gap: 1.4rem; }
.site-header nav a { text-decoration: none; color: var(--muted); font-size: .95rem; font-weight: 500; transition: color .2s; }
.site-header nav a:hover { color: var(--text); }
.nav-cta {
  background: var(--grad); color: #fff !important; padding: .5rem 1.05rem; border-radius: 999px;
  font-weight: 600; box-shadow: var(--shadow-glow); transition: transform .12s, box-shadow .2s;
}
.nav-cta:hover { transform: translateY(-1px); }

main { max-width: 860px; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 2rem); }

/* ---- hero ---- */
.hero { text-align: center; padding: clamp(2rem, 7vw, 4.5rem) 0 2rem; }
.eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: var(--primary-2);
  background: rgba(249, 115, 22, .12); border: 1px solid rgba(249,115,22,.25);
  padding: .4rem .9rem; border-radius: 999px; margin-bottom: 1.25rem;
}
h1 {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.1rem, 6vw, 3.4rem); line-height: 1.08; letter-spacing: -.02em; margin: 0 0 1.1rem;
}
.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.subtitle { color: #cbd5e1; max-width: 640px; margin: 0 auto 2.25rem; font-size: 1.12rem; }
.subtitle strong { color: #fff; }

/* ---- upload card ---- */
.upload-shell {
  position: relative; border-radius: var(--radius-lg); padding: 1px;
  background: linear-gradient(135deg, rgba(249,115,22,.6), rgba(5,150,105,.5));
  box-shadow: var(--shadow);
}
.dropzone {
  border-radius: calc(var(--radius-lg) - 1px);
  background: linear-gradient(180deg, var(--card), var(--bg-2));
  padding: clamp(2rem, 6vw, 3.25rem); cursor: pointer;
  transition: background .2s, transform .08s;
}
.dropzone:hover { background: linear-gradient(180deg, var(--card-2), var(--card)); }
.dropzone:focus-visible { outline: 3px solid var(--primary-2); outline-offset: 3px; }
.dropzone.dragover { background: linear-gradient(180deg, #24314a, var(--card)); transform: scale(.995); }

.dz-icon {
  width: 78px; height: 78px; margin: 0 auto 1rem; border-radius: 20px;
  display: grid; place-items: center; color: #fff; background: var(--grad);
  box-shadow: var(--shadow-glow);
}
.dz-title { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; margin: .25rem 0; }
.dz-sub { margin: 0 0 .5rem; color: var(--muted); }
.dz-sub .link { color: var(--primary-2); font-weight: 600; }
.dz-note { font-size: .82rem; color: var(--muted); margin: .6rem 0 0; }

/* ---- trust row ---- */
.trust-row {
  list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: .7rem 1.5rem;
  padding: 0; margin: 1.75rem 0 0; color: var(--muted); font-size: .92rem; font-weight: 500;
}
.trust-row li { display: inline-flex; align-items: center; gap: .45rem; }
.trust-row svg { color: var(--accent); }

/* ---- result card ---- */
.result {
  margin-top: 1.75rem; text-align: left;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.75rem; animation: rise .35s ease;
}
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.result h3 { font-family: var(--font-display); margin: 0 0 1rem; font-size: 1.3rem; display: inline-flex; align-items: center; gap: .5rem; }
.result h3 svg { color: var(--accent); }

.preview { max-width: 100%; max-height: 300px; border-radius: 14px; margin-bottom: 1.25rem; display: block; border: 1px solid var(--border); }

.coords { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.25rem; }
.coord-box { background: var(--bg-2); border: 1px solid var(--border-strong); border-radius: 14px; padding: 1rem 1.15rem; }
.coord-box .label { font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; color: var(--primary-2); font-weight: 600; }
.coord-box .value { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }

.meta-list { list-style: none; padding: 0; margin: 0 0 1.25rem; font-size: .92rem; color: var(--muted); }
.meta-list li { padding: .12rem 0; }

.actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem; font-size: 1rem; font-weight: 600;
  padding: .8rem 1.4rem; border-radius: 12px; border: 1px solid transparent;
  text-decoration: none; cursor: pointer; transition: transform .08s, box-shadow .2s, background .2s, border-color .2s;
  font-family: var(--font);
}
.btn-primary { background: linear-gradient(120deg, #10b981, #059669); color: #fff; box-shadow: 0 10px 26px rgba(5,150,105,.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(5,150,105,.5); }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { border-color: var(--primary-2); color: var(--primary-2); }

.result.error { border-color: rgba(248,113,113,.4); }
.result.error h3 { color: var(--danger); }
.result.error h3 svg { color: var(--danger); }

/* ---- content sections ---- */
.content {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem); margin: 1.5rem 0;
}
.content h2 { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; margin: 0 0 1rem; }
.content h3 { font-family: var(--font-display); }
.lead { font-size: 1.1rem; color: #cbd5e1; }
.content p { color: var(--muted); }
.content strong { color: var(--text); }
.steps { padding-left: 1.25rem; color: var(--muted); }
.steps li { margin-bottom: .7rem; }
.steps strong { color: var(--text); }
abbr { text-decoration-color: var(--primary-2); }

/* ---- feature grid ---- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.feature-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 16px; padding: 1.4rem;
  transition: transform .15s, border-color .2s;
}
.feature-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.feature-ic {
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; color: var(--primary-2);
  background: rgba(249,115,22,.12); border: 1px solid rgba(249,115,22,.22); margin-bottom: .75rem;
}
.feature-card h3 { margin: 0 0 .4rem; font-size: 1.1rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: .95rem; }

/* ---- FAQ ---- */
details {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 14px;
  padding: 1rem 1.2rem; margin-bottom: .75rem; transition: border-color .2s;
}
details[open] { border-color: rgba(249,115,22,.3); }
summary { font-family: var(--font-display); font-weight: 600; cursor: pointer; list-style: none; position: relative; padding-right: 1.5rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: -2px; font-size: 1.4rem; color: var(--primary-2); transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: .75rem 0 0; color: var(--muted); }

/* ---- footer ---- */
.site-footer { text-align: center; padding: 3rem 1rem; color: var(--muted); font-size: .92rem; max-width: 700px; margin: 0 auto; }
.site-footer .updated { font-size: .82rem; opacity: .7; margin-top: .5rem; }

/* ---- breadcrumb ---- */
.breadcrumb { font-size: .85rem; color: var(--muted); padding: 1.25rem 0 .25rem; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--primary-2); }
.breadcrumb span { color: var(--text); }

/* ---- guide article ---- */
.guide { padding-top: .5rem; }
.guide h1 { font-family: var(--font-display); font-size: clamp(1.9rem, 5vw, 2.6rem); line-height: 1.12; letter-spacing: -.02em; margin: .25rem 0 .5rem; }
.guide .dek { font-size: 1.15rem; color: #cbd5e1; margin: 0 0 1rem; }
.guide .meta-line { font-size: .82rem; color: var(--muted); margin-bottom: 1.5rem; }
.guide-body { color: #cbd5e1; }
.guide-body h2 { font-family: var(--font-display); color: var(--text); font-size: 1.45rem; margin: 2rem 0 .75rem; }
.guide-body h3 { font-family: var(--font-display); color: var(--text); font-size: 1.15rem; margin: 1.5rem 0 .5rem; }
.guide-body ul, .guide-body ol { padding-left: 1.25rem; }
.guide-body li { margin-bottom: .5rem; }
.guide-body strong { color: var(--text); }
.guide-body a { color: var(--primary-2); }

/* ---- compact uploader card (guides) ---- */
.tool-embed { margin: 1.75rem 0; }

/* ---- CTA card ---- */
.cta-card {
  background: linear-gradient(135deg, rgba(249,115,22,.12), rgba(5,150,105,.10));
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  padding: 1.5rem; margin: 2rem 0; text-align: center;
}
.cta-card h2 { margin: 0 0 .5rem; }
.cta-card p { color: var(--muted); margin: 0 0 1rem; }

/* ---- related guides ---- */
.related-guides { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin-top: 1rem; }
.guide-link {
  display: block; background: var(--bg-2); border: 1px solid var(--border); border-radius: 14px;
  padding: 1.1rem 1.25rem; text-decoration: none; transition: transform .15s, border-color .2s;
}
.guide-link:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.guide-link .gl-title { font-family: var(--font-display); font-weight: 600; color: var(--text); margin-bottom: .25rem; }
.guide-link .gl-desc { font-size: .9rem; color: var(--muted); }

/* ---- home: guides teaser ---- */
.guides-teaser a.more { color: var(--primary-2); font-weight: 600; text-decoration: none; }

@media (max-width: 720px) {
  .feature-grid { grid-template-columns: 1fr; }
  .site-header nav a:not(.nav-cta) { display: none; }
}
@media (max-width: 480px) {
  .coords { grid-template-columns: 1fr; }
  .actions { flex-direction: column; }
  .btn { justify-content: center; }
}