*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0a0c10;
  --bg2: #111318;
  --bg3: #1a1d24;
  --border: rgba(255,255,255,0.08);
  --accent: #4f8eff;
  --accent2: #7c5cfc;
  --text: #e8eaf0;
  --muted: #6b7280;
  --success: #34d399;
  --error: #f87171;
  --card-bg: rgba(255,255,255,0.035);
  --card-hover: rgba(255,255,255,0.06);
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Animated background grid */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,142,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,142,255,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
  pointer-events: none;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

/* Header */
header {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.logo svg {
  color: var(--accent);
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 48px;
}

.label {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 16px;
}

.ip-display {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: linear-gradient(135deg, rgba(79,142,255,0.1), rgba(124,92,252,0.1));
  border: 1px solid rgba(79,142,255,0.2);
  border-radius: 18px;
  padding: 20px 32px;
  margin-bottom: 14px;
  backdrop-filter: blur(12px);
}

#ip-address {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #e8eaf0 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-variant-numeric: tabular-nums;
}

.ip-type {
  font-size: 0.82rem;
  color: var(--muted);
  min-height: 20px;
}

/* Copy button */
.copy-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  flex-shrink: 0;
}

.copy-btn:hover {
  background: rgba(79,142,255,0.15);
  border-color: var(--accent);
  color: var(--accent);
}

.copy-btn.copied {
  background: rgba(52,211,153,0.15);
  border-color: var(--success);
  color: var(--success);
}

/* Info grid */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  backdrop-filter: blur(8px);
}

.card:hover {
  background: var(--card-hover);
  border-color: rgba(79,142,255,0.2);
  transform: translateY(-1px);
}

.card-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, rgba(79,142,255,0.15), rgba(124,92,252,0.15));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.card-content {
  min-width: 0;
  flex: 1;
}

.card-label {
  font-size: 0.73rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 4px;
}

.card-value {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  word-break: break-word;
  line-height: 1.4;
}

/* Skeleton shimmer */
@keyframes shimmer {
  0% { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}

.skeleton .card-value {
  color: transparent;
  background: linear-gradient(90deg, var(--bg3) 25%, rgba(255,255,255,0.06) 50%, var(--bg3) 75%);
  background-size: 600px 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 4px;
  min-width: 80px;
  min-height: 18px;
  display: block;
}

.skeleton .card-icon svg {
  opacity: 0.3;
}

/* Map */
.map-section {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 24px;
  height: 280px;
  position: relative;
}

.map-placeholder {
  position: absolute;
  inset: 0;
  background: var(--bg2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 0.85rem;
}

.map-frame {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* Error banner */
.error-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.25);
  border-radius: 10px;
  padding: 14px 18px;
  color: var(--error);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* Refresh button */
.refresh-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto 40px;
  padding: 11px 24px;
  background: rgba(79,142,255,0.1);
  border: 1px solid rgba(79,142,255,0.25);
  border-radius: 10px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.refresh-btn:hover {
  background: rgba(79,142,255,0.18);
  border-color: var(--accent);
}

.refresh-btn:active svg {
  animation: spin 0.5s linear;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Footer */
footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Utility */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 480px) {
  .ip-display {
    padding: 16px 20px;
  }

  .info-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 360px) {
  .info-grid {
    grid-template-columns: 1fr;
  }
}