/* CheckMyIP.info — WN Tech Solutions
   Dark-first, accessible, mobile-first */

:root {
  /* brand */
  --navy: #1E3A8A;
  --navy-2: #2546a6;
  --red: #DC2626;
  --blue: #3B82F6;

  /* dark defaults */
  --bg: #0B1220;
  --bg-2: #0F172A;
  --surface: #111A2E;
  --surface-2: #162038;
  --border: #1F2B48;
  --text: #E5E7EB;
  --text-dim: #94A3B8;
  --text-strong: #F8FAFC;
  --accent: #3B82F6;
  --accent-strong: #60A5FA;
  --ring: rgba(59,130,246,.45);
  --shadow-lg: 0 20px 40px -12px rgba(0,0,0,.55);
  --shadow-card: 0 1px 0 rgba(255,255,255,.04), 0 12px 30px -14px rgba(0,0,0,.6);
  --glow: radial-gradient(1200px 500px at 50% -100px, rgba(59,130,246,.25), transparent 60%),
          radial-gradient(800px 400px at 90% 10%, rgba(220,38,38,.12), transparent 70%);
}

[data-theme="light"] {
  --bg: #F8FAFC;
  --bg-2: #EEF2F7;
  --surface: #FFFFFF;
  --surface-2: #F1F5F9;
  --border: #E2E8F0;
  --text: #1F2937;
  --text-dim: #64748B;
  --text-strong: #0B1220;
  --accent: #1E3A8A;
  --accent-strong: #1E40AF;
  --ring: rgba(30,58,138,.35);
  --shadow-lg: 0 20px 40px -16px rgba(30,58,138,.25);
  --shadow-card: 0 1px 0 rgba(15,23,42,.04), 0 10px 24px -14px rgba(15,23,42,.18);
  --glow: radial-gradient(1200px 500px at 50% -100px, rgba(30,58,138,.18), transparent 60%),
          radial-gradient(800px 400px at 90% 10%, rgba(220,38,38,.12), transparent 70%);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-strong); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }
:focus-visible { outline: 3px solid var(--ring); outline-offset: 3px; border-radius: 6px; }

.sr-only {
  position: absolute !important; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border:0;
}
.skip-link {
  position: absolute; left: -9999px; top: 8px; background: var(--accent); color:#fff;
  padding: 10px 14px; border-radius: 8px; z-index: 1000;
}
.skip-link:focus { left: 12px; }

.container { width: min(1180px, 92vw); margin-inline: auto; }

/* ------------------- header ------------------- */
.site-header {
  position: sticky; top:0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-grid {
  display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center;
  padding: 14px 0;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text-strong); }
.brand:hover { text-decoration: none; }
.brand-logo { width: 36px; height: 36px; border-radius: 8px; background: var(--surface); padding: 3px; }
.brand-name { font-size: 18px; letter-spacing: -.01em; }
.brand-accent { color: var(--red); }
.nav-list { list-style: none; padding:0; margin:0; display: flex; gap: 18px; justify-content: center; }
.nav-list a { color: var(--text-dim); font-weight: 500; font-size: 14px; }
.nav-list a:hover { color: var(--text-strong); text-decoration: none; }
@media (max-width: 720px) { .nav-list { display: none; } }

.theme-btn {
  appearance: none; border: 1px solid var(--border); background: var(--surface);
  color: var(--text-strong); width: 44px; height: 44px; border-radius: 10px;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
  position: relative;
}
.theme-btn:hover { border-color: var(--accent); }
.theme-btn .icon-sun, .theme-btn .icon-moon {
  position: absolute; inset: 0; margin: auto; transition: opacity .25s, transform .25s;
}
[data-theme="dark"] .icon-sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="dark"] .icon-moon { opacity: 0; transform: rotate(-90deg) scale(.6); }
[data-theme="light"] .icon-sun { opacity: 0; transform: rotate(90deg) scale(.6); }
[data-theme="light"] .icon-moon { opacity: 1; transform: rotate(0) scale(1); }

/* ------------------- hero ------------------- */
.hero {
  position: relative; overflow: hidden; padding: 64px 0 56px;
  border-bottom: 1px solid var(--border);
}
.hero-bg {
  position: absolute; inset: 0; background: var(--glow); pointer-events: none;
}
.hero-inner { position: relative; text-align: center; }
.eyebrow {
  display: inline-block; color: var(--text-dim); font-size: 13px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .12em; margin: 0 0 18px;
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px;
  background: color-mix(in oklab, var(--surface) 80%, transparent);
}
.ip-display {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: clamp(32px, 9vw, 72px);
  letter-spacing: -.02em;
  color: var(--text-strong);
  line-height: 1.05;
  min-height: 1.1em;
  display: flex; justify-content: center; align-items: center; gap: 12px;
  background: linear-gradient(120deg, var(--text-strong) 15%, var(--accent-strong) 55%, var(--red) 95%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 6s ease-in-out infinite;
  background-size: 200% 100%;
}
@keyframes shimmer { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
.ip-skel {
  display: inline-block; width: min(320px, 60vw); height: .9em;
  background: linear-gradient(90deg, var(--surface) 0%, var(--surface-2) 50%, var(--surface) 100%);
  background-size: 200% 100%; animation: skel 1.2s ease-in-out infinite;
  border-radius: 8px; -webkit-text-fill-color: initial;
}
.hero-meta {
  margin-top: 14px; display: inline-flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: center;
}
.ip-version {
  padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: .08em;
  background: color-mix(in oklab, var(--accent) 18%, transparent); color: var(--accent-strong);
  border: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
}
.copy-btn {
  appearance: none; cursor: pointer; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-strong); padding: 8px 14px;
  border-radius: 999px; font: inherit; font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 8px; transition: transform .2s, border-color .2s;
}
.copy-btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.copy-btn.ok { background: color-mix(in oklab, #16a34a 18%, transparent); border-color: #16a34a; }
.hero-lede { margin: 20px auto 0; max-width: 560px; color: var(--text-dim); font-size: 15px; }

/* ------------------- cards ------------------- */
.cards-wrap { padding: 48px 0 8px; }
.cards-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px;
}
@media (max-width: 840px) { .cards-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 18px;
  padding: 22px; box-shadow: var(--shadow-card);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.card:hover { transform: translateY(-2px); border-color: color-mix(in oklab, var(--accent) 40%, var(--border)); }
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.card-head h2 { margin: 0; font-size: 16px; font-weight: 700; color: var(--text-strong); letter-spacing: -.005em; }
.card-icon {
  width: 38px; height: 38px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent) 25%, transparent), color-mix(in oklab, var(--red) 18%, transparent));
  color: var(--text-strong);
}
.wx-place { margin-left: auto; color: var(--text-dim); font-size: 13px; }

.card-body { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; }
.card-body > div { min-width: 0; }
.card-body dt { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); margin-bottom: 4px; }
.card-body dd { margin: 0; font-weight: 600; color: var(--text-strong); overflow-wrap: anywhere; font-size: 14.5px; }

.skel {
  display: inline-block; height: 14px; width: 72%; min-width: 80px; border-radius: 6px;
  background: linear-gradient(90deg, var(--surface-2) 0%, color-mix(in oklab, var(--surface-2) 60%, var(--border)) 50%, var(--surface-2) 100%);
  background-size: 200% 100%; animation: skel 1.4s ease-in-out infinite;
}
.skel.wide { width: 120px; height: 34px; }
@keyframes skel { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

.wx-body { grid-template-columns: auto 1fr; gap: 18px 24px; }
.wx-main { display: flex; align-items: center; gap: 14px; }
.wx-icon { font-size: 40px; line-height: 1; }
.wx-temp { font-size: 40px; font-weight: 800; letter-spacing: -.02em; color: var(--text-strong); }
.wx-grid { margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 20px; align-content: center; }
.wx-grid dt { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); }
.wx-grid dd { margin: 0; font-weight: 600; color: var(--text-strong); font-size: 14px; }

@media (max-width: 520px) {
  .wx-body { grid-template-columns: 1fr; }
  .card-body { grid-template-columns: 1fr; }
}

/* ------------------- map ------------------- */
.map-wrap { padding: 32px 0 8px; }
.section-title { font-size: 22px; margin: 0 0 6px; color: var(--text-strong); letter-spacing: -.01em; }
.section-lede { margin: 0 0 14px; color: var(--text-dim); font-size: 14px; }
.map-shell {
  height: 380px; border-radius: 18px; overflow: hidden; border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
#leafletMap { height: 100%; width: 100%; background: var(--surface); }
.leaflet-tile-pane { filter: none; }
[data-theme="dark"] .leaflet-tile-pane { filter: invert(1) hue-rotate(180deg) brightness(.85) contrast(.95); }
[data-theme="dark"] .leaflet-control-attribution, [data-theme="dark"] .leaflet-control-zoom a {
  background: var(--surface) !important; color: var(--text) !important; border-color: var(--border) !important;
}

/* ------------------- counter ------------------- */
.counter-wrap { padding: 64px 0; position: relative; overflow: hidden; }
.counter-inner {
  text-align: center; background: var(--surface); border: 1px solid var(--border);
  border-radius: 24px; padding: 40px 24px; box-shadow: var(--shadow-lg);
  background-image: linear-gradient(180deg, color-mix(in oklab, var(--accent) 6%, var(--surface)) 0%, var(--surface) 70%);
}
.counter-eye { font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-dim); font-weight: 600; }
.counter-num {
  font-variant-numeric: tabular-nums;
  font-size: clamp(54px, 12vw, 120px);
  font-weight: 900; letter-spacing: -.03em; line-height: 1;
  margin: 10px 0 6px; color: var(--text-strong);
  background: linear-gradient(120deg, var(--accent-strong), var(--red));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.counter-sub { color: var(--text-dim); font-size: 14px; }

/* ------------------- footer ------------------- */
.site-footer {
  margin-top: 48px; padding: 48px 0 24px; border-top: 1px solid var(--border);
  background: var(--bg-2);
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .12em; color: var(--text-dim); margin: 0 0 10px; }
.footer-note { color: var(--text-dim); font-size: 14px; margin: 10px 0; max-width: 50ch; }
.unlist { padding: 0; margin: 0; list-style: none; display: grid; gap: 8px; }
.unlist a { color: var(--text-strong); }
.unlist a:hover { color: var(--accent-strong); }
.footer-sub { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--text-dim); font-size: 13px; }