/* tagxone.com — indigo / cyan geo-tech */
:root,
[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-elevated: #ffffff;
  --text: #12182a;
  --text-muted: #5b647a;
  --border: #d8dee9;
  --primary: #3d4fd9;
  --primary-hover: #2f3fbe;
  --accent: #00b4c8;
  --accent-2: #7c5cff;
  --hero-grad: linear-gradient(135deg, #1e2a8a 0%, #3d4fd9 45%, #00a0b4 100%);
  --map-bg: #e8eef8;
  --map-grid: rgba(61, 79, 217, 0.12);
  --map-land: #c5d0ea;
  --shadow: 0 10px 30px rgba(18, 24, 42, 0.08);
  --focus: #3d4fd9;
  --radius: 14px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --max: 1120px;
  --header-h: 4rem;
  --danger: #c0392b;
  --ok: #0d8a5b;
}

[data-theme="dark"] {
  --bg: #0b0f1a;
  --bg-elevated: #12182a;
  --text: #e8ecf7;
  --text-muted: #9aa3bc;
  --border: #2a3348;
  --primary: #7b8cff;
  --primary-hover: #9aa6ff;
  --accent: #2ee0f0;
  --accent-2: #a78bfa;
  --hero-grad: linear-gradient(135deg, #0f1640 0%, #1c2670 50%, #0a4a55 100%);
  --map-bg: #0e1424;
  --map-grid: rgba(123, 140, 255, 0.14);
  --map-land: #1a2540;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  --focus: #7b8cff;
  --danger: #ff6b6b;
  --ok: #3dd68c;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--primary); text-underline-offset: 0.2em; }
a:hover { color: var(--primary-hover); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

.skip-link {
  position: absolute; left: -999px; top: 0.5rem;
  background: var(--primary); color: #fff; padding: 0.5rem 1rem; z-index: 1000; border-radius: 6px;
}
.skip-link:focus { left: 0.5rem; }

.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: var(--header-h);
}
.logo {
  font-weight: 800; letter-spacing: -0.03em; color: var(--text); text-decoration: none; font-size: 1.1rem;
}
.logo span { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 0.5rem; }
.theme-toggle, .nav-toggle {
  border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text);
  border-radius: 999px; padding: 0.4rem 0.85rem; font-size: 0.85rem; cursor: pointer;
}
.nav-toggle { border-radius: 8px; width: 2.5rem; height: 2.5rem; padding: 0; }
.nav-wrap {
  display: none; position: absolute; top: var(--header-h); left: 0; right: 0;
  background: var(--bg-elevated); border-bottom: 1px solid var(--border); padding: 1rem;
}
.nav-wrap.is-open { display: block; }
.site-nav { display: flex; flex-direction: column; gap: 0.2rem; }
.site-nav a {
  color: var(--text); text-decoration: none; padding: 0.55rem 0.75rem; border-radius: 8px; font-weight: 600; font-size: 0.95rem;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  background: color-mix(in srgb, var(--primary) 14%, transparent); color: var(--primary);
}
@media (min-width: 860px) {
  .nav-toggle { display: none; }
  .nav-wrap { display: block !important; position: static; border: 0; padding: 0; background: transparent; }
  .site-nav { flex-direction: row; margin-left: auto; align-items: center; }
}

.hero {
  background: var(--hero-grad); color: #f4f7ff; padding: 3.5rem 0 3.75rem; position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--map-grid) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 28px 28px; opacity: 0.35; pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 {
  margin: 0 0 0.75rem; font-size: clamp(1.9rem, 4.2vw, 2.8rem); line-height: 1.15; letter-spacing: -0.03em; max-width: 14ch;
}
.hero .lead { margin: 0 0 1.5rem; max-width: 46ch; opacity: 0.93; font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.badge {
  display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 0.5rem;
}
.hero .badge { color: #9ef0f8; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
  padding: 0.72rem 1.2rem; border-radius: 10px; font-weight: 700; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; font-size: 0.95rem;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: #fff; color: #1e2a8a; }
.btn-primary:hover { background: #e8ecff; color: #1e2a8a; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); color: #fff; }
.btn-solid { background: var(--primary); color: #fff; }
.btn-solid:hover { background: var(--primary-hover); color: #fff; }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-accent { background: var(--accent); color: #062428; }
.btn-accent:hover { filter: brightness(1.05); color: #062428; }

main { flex: 1; }
.section { padding: 3rem 0; }
.section-alt { background: var(--bg-elevated); border-block: 1px solid var(--border); }
.section h2 { margin: 0 0 0.5rem; font-size: clamp(1.4rem, 2.5vw, 1.9rem); letter-spacing: -0.02em; }
.section-intro { margin: 0 0 1.75rem; color: var(--text-muted); max-width: 55ch; }

.grid-3 { display: grid; gap: 1.25rem; }
@media (min-width: 720px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }
.grid-2 { display: grid; gap: 1.25rem; }
@media (min-width: 720px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }

.card {
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.35rem; box-shadow: var(--shadow); transition: transform 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.card h3 { margin: 0 0 0.5rem; font-size: 1.08rem; }
.card p { margin: 0; color: var(--text-muted); font-size: 0.95rem; }
.step-num {
  width: 2rem; height: 2rem; border-radius: 50%; display: grid; place-items: center;
  background: color-mix(in srgb, var(--primary) 16%, transparent); color: var(--primary);
  font-weight: 800; font-size: 0.9rem; margin-bottom: 0.75rem;
}

.page-hero { padding: 2.5rem 0 1.5rem; border-bottom: 1px solid var(--border); }
.page-hero h1 { margin: 0 0 0.5rem; font-size: clamp(1.6rem, 3vw, 2.25rem); letter-spacing: -0.02em; }
.page-hero p { margin: 0; color: var(--text-muted); max-width: 52ch; }

.prose { max-width: 68ch; }
.prose p { color: var(--text); }
.muted { color: var(--text-muted); }

.form { display: grid; gap: 1rem; max-width: 32rem; }
.form label { display: grid; gap: 0.35rem; font-weight: 600; font-size: 0.9rem; }
.form input, .form textarea, .form select {
  font: inherit; padding: 0.7rem 0.85rem; border: 1px solid var(--border);
  border-radius: 10px; background: var(--bg); color: var(--text);
}
.form textarea { min-height: 8rem; resize: vertical; }
.form-note { font-size: 0.9rem; color: var(--text-muted); max-width: 42ch; }
.form-success {
  display: none; padding: 0.85rem 1rem; border-radius: 10px;
  background: color-mix(in srgb, var(--ok) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--ok) 40%, transparent);
}
.form-success.is-visible { display: block; }

.site-footer {
  margin-top: auto; border-top: 1px solid var(--border); background: var(--bg-elevated);
  padding: 2rem 0; font-size: 0.9rem; color: var(--text-muted);
}
.footer-inner { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-inner a { color: var(--text-muted); }
@media (min-width: 700px) {
  .footer-inner { flex-direction: row; justify-content: space-between; align-items: center; }
}

/* Mock UI */
.mock-ui {
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--bg); box-shadow: var(--shadow);
}
.mock-bar {
  display: flex; align-items: center; gap: 0.4rem; padding: 0.65rem 0.9rem;
  background: var(--bg-elevated); border-bottom: 1px solid var(--border); font-size: 0.8rem; color: var(--text-muted);
}
.mock-dot { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--border); }
.mock-body { padding: 1.25rem; }
.tag-pill {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: ui-monospace, Consolas, monospace; font-weight: 700;
  background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent);
  padding: 0.25rem 0.6rem; border-radius: 8px; letter-spacing: 0.06em;
}

/* ===== Interactive Demo ===== */
.demo-layout {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 960px) {
  .demo-layout { grid-template-columns: 300px 1fr; align-items: start; }
}

.demo-panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem;
  box-shadow: var(--shadow);
}
.demo-panel h2 { margin: 0 0 0.75rem; font-size: 1.05rem; }
.demo-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.65rem; margin-bottom: 1rem;
}
.stat {
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 0.7rem;
}
.stat strong { display: block; font-size: 1.35rem; letter-spacing: -0.02em; color: var(--primary); }
.stat span { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }

.field { display: grid; gap: 0.3rem; margin-bottom: 0.75rem; font-size: 0.88rem; font-weight: 600; }
.field input, .field select {
  font: inherit; font-weight: 500; padding: 0.55rem 0.7rem; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.demo-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }
.demo-actions .btn { font-size: 0.85rem; padding: 0.55rem 0.85rem; }
.hint { font-size: 0.82rem; color: var(--text-muted); margin: 0.75rem 0 0; font-weight: 400; }

.filter-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.75rem 0; }
.chip-btn {
  border: 1px solid var(--border); background: var(--bg); color: var(--text-muted);
  border-radius: 999px; padding: 0.3rem 0.7rem; font-size: 0.8rem; font-weight: 600; cursor: pointer;
}
.chip-btn.is-active, .chip-btn[aria-pressed="true"] {
  background: color-mix(in srgb, var(--primary) 16%, transparent);
  border-color: var(--primary); color: var(--primary);
}

.map-shell {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--map-bg);
  box-shadow: var(--shadow);
  min-height: 420px;
  height: min(70vh, 560px);
  touch-action: none;
  user-select: none;
}
.map-canvas {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--map-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--map-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  cursor: crosshair;
}
.map-uk {
  position: absolute;
  left: 18%; top: 12%;
  width: 48%; height: 72%;
  background: var(--map-land);
  border-radius: 42% 38% 48% 35% / 28% 42% 32% 48%;
  opacity: 0.55;
  pointer-events: none;
  filter: drop-shadow(0 0 0 1px var(--border));
}
.map-uk::after {
  content: "UK · stylised";
  position: absolute; bottom: 8%; left: 50%; transform: translateX(-50%);
  font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-muted); white-space: nowrap;
}
.map-label {
  position: absolute; top: 0.75rem; left: 0.75rem; z-index: 2;
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  border: 1px solid var(--border); border-radius: 8px; padding: 0.4rem 0.65rem;
  font-size: 0.78rem; color: var(--text-muted); backdrop-filter: blur(6px);
}
.radius-ring {
  position: absolute; border: 2px dashed color-mix(in srgb, var(--accent) 70%, transparent);
  border-radius: 50%; pointer-events: none; transform: translate(-50%, -50%);
  opacity: 0; transition: opacity 0.25s ease;
}
.radius-ring.is-on { opacity: 0.85; }
.user-pin {
  position: absolute; width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 3px solid #fff; box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 35%, transparent);
  transform: translate(-50%, -50%); z-index: 4; pointer-events: none;
  opacity: 0;
}
.user-pin.is-on { opacity: 1; }

.tag-marker {
  position: absolute; z-index: 5;
  transform: translate(-50%, -50%) scale(0.6);
  opacity: 0;
  transition: opacity 0.35s ease, transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  cursor: pointer;
  border: 0; background: transparent; padding: 0;
}
.tag-marker.is-visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}
.tag-marker.is-hidden-filter {
  opacity: 0 !important;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.5) !important;
}
.tag-marker .pin {
  display: flex; flex-direction: column; align-items: center; gap: 0.2rem;
}
.tag-marker .code {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em;
  background: var(--bg-elevated); color: var(--primary);
  border: 1px solid var(--border); border-radius: 6px; padding: 0.15rem 0.4rem;
  box-shadow: var(--shadow);
}
.tag-marker .dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 30%, transparent);
}
.tag-marker[data-category="tools"] .dot { background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent); }
.tag-marker[data-category="goods"] .dot { background: var(--accent-2); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-2) 30%, transparent); }
.tag-marker[data-category="services"] .dot { background: #e8a317; box-shadow: 0 0 0 3px rgba(232, 163, 23, 0.3); }
.tag-marker[data-category="tools"] .code { color: var(--accent); }
.tag-marker[data-category="goods"] .code { color: var(--accent-2); }
.tag-marker[data-category="services"] .code { color: #c4890a; }

.hover-card {
  position: absolute; z-index: 20;
  min-width: 200px; max-width: 240px;
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 12px;
  padding: 0.85rem; box-shadow: var(--shadow);
  pointer-events: none; opacity: 0; transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.hover-card.is-on { opacity: 1; transform: translateY(0); }
.hover-card h3 { margin: 0 0 0.25rem; font-size: 0.95rem; }
.hover-card p { margin: 0; font-size: 0.82rem; color: var(--text-muted); }
.hover-card .meta { margin-top: 0.5rem; font-size: 0.75rem; font-weight: 700; color: var(--primary); }

.tag-list {
  list-style: none; margin: 0.75rem 0 0; padding: 0; max-height: 180px; overflow: auto;
  display: grid; gap: 0.4rem;
}
.tag-list li {
  display: flex; justify-content: space-between; gap: 0.5rem; align-items: center;
  font-size: 0.85rem; padding: 0.45rem 0.55rem; border-radius: 8px;
  background: var(--bg); border: 1px solid var(--border);
}
.tag-list code { font-weight: 800; color: var(--primary); }
.tag-list .dist { color: var(--text-muted); font-size: 0.78rem; }

.build-note {
  margin-top: 2rem; padding: 1.25rem 1.35rem; border-radius: var(--radius);
  border: 1px dashed color-mix(in srgb, var(--accent) 50%, var(--border));
  background: color-mix(in srgb, var(--accent) 6%, var(--bg-elevated));
}
.build-note h2 { margin: 0 0 0.5rem; font-size: 1rem; }
.build-note p, .build-note li { font-size: 0.9rem; color: var(--text-muted); }
.build-note ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.build-note code {
  font-size: 0.85em; background: color-mix(in srgb, var(--primary) 12%, transparent);
  padding: 0.1rem 0.35rem; border-radius: 4px; color: var(--primary);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}