:root {
  --smgis-bg: #F4F6F8;
  --smgis-panel: #FFFFFF;
  --smgis-border: #D7DEE3;
  --smgis-ink: #1E2A32;
  --smgis-muted: #5B6B76;

  /* Primary interactive accent — matches the smgis.in brand orange (buttons, tabs, focus) */
  --smgis-accent: #EF9D3B;
  --smgis-accent-dark: #D9822A;
  --smgis-accent-soft: #FDEEDA;

  /* Secondary "data" color — used only for displaying converted values, distinct from actions */
  --smgis-data: #0F6E5D;
  --smgis-data-dark: #0B564A;

  --smgis-danger: #B3261E;
  --smgis-danger-soft: #FBEAE9;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; }

body {
  background: var(--smgis-bg);
  color: var(--smgis-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- Header ---------- */

.tool-header {
  background: var(--smgis-ink);
  color: #fff;
  padding: 18px 0;
  background-image:
    linear-gradient(var(--smgis-ink), var(--smgis-ink)),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.05) 0, rgba(255,255,255,0.05) 1px, transparent 1px, transparent 28px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.05) 0, rgba(255,255,255,0.05) 1px, transparent 1px, transparent 28px);
  background-blend-mode: normal;
}

.graticule-mark {
  color: var(--smgis-accent);
  flex-shrink: 0;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #A9B7BE;
  font-weight: 500;
}

.tool-header h1 {
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ---------- Main ---------- */

.tool-main {
  flex: 1;
  padding-top: 40px;
  padding-bottom: 48px;
}

.tool-description {
  color: var(--smgis-muted);
  font-size: 14.5px;
  line-height: 1.6;
  max-width: 62ch;
  margin-bottom: 24px;
}

.tool-card {
  background: var(--smgis-panel);
  border: 1px solid var(--smgis-border);
  border-radius: 6px;
  box-shadow: 0 1px 2px rgba(20, 30, 35, 0.04);
}

.tool-card .card-body {
  padding: 28px;
}

/* ---------- Tabs ---------- */

.tool-tabs {
  border-bottom: 1px solid var(--smgis-border);
  padding-bottom: 16px;
  gap: 6px;
}

.tool-tabs .nav-link {
  color: var(--smgis-muted);
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 4px;
  background: transparent;
}

.tool-tabs .nav-link:hover {
  background: var(--smgis-accent-soft);
  color: var(--smgis-accent-dark);
}

.tool-tabs .nav-link.active {
  background: var(--smgis-accent);
  color: #fff;
}

/* ---------- Form ---------- */

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--smgis-ink);
  margin-bottom: 6px;
}

.form-control, .form-select {
  border: 1px solid var(--smgis-border);
  border-radius: 4px;
  font-size: 14.5px;
  padding: 9px 12px;
  color: var(--smgis-ink);
}

.form-control:focus, .form-select:focus {
  border-color: var(--smgis-accent);
  box-shadow: 0 0 0 3px var(--smgis-accent-soft);
}

.form-control.font-mono {
  font-family: var(--font-mono);
}

.form-text {
  font-size: 12px;
  color: var(--smgis-muted);
  margin-top: 6px;
}

.coord-type-toggle .btn {
  border: 1px solid var(--smgis-border);
  color: var(--smgis-muted);
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 0;
}

.coord-type-toggle .btn-check:checked + .btn {
  background: var(--smgis-accent);
  border-color: var(--smgis-accent);
  color: #fff;
}

/* ---------- Axis groups (Latitude / Longitude side by side) ---------- */

.axis-group {
  border: 1px solid var(--smgis-border);
  border-radius: 5px;
  padding: 16px;
  height: 100%;
  background: #FCFDFD;
}

.axis-heading {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--smgis-accent-dark);
  margin-bottom: 12px;
}

.numeric-input {
  font-family: var(--font-mono);
}

/* ---------- Form-level message (neither field provided) ---------- */

.form-message {
  font-size: 13.5px;
  color: var(--smgis-danger);
  background: var(--smgis-danger-soft);
  border: 1px solid var(--smgis-danger);
  border-radius: 4px;
  padding: 10px 14px;
  margin-top: 16px;
}

/* ---------- "Coming soon" banner ---------- */

.coming-soon-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px dashed var(--smgis-border);
  border-radius: 5px;
  padding: 12px 16px;
  color: var(--smgis-muted);
  font-size: 13px;
  background: var(--smgis-bg);
}

.coming-soon-banner svg {
  flex-shrink: 0;
  color: var(--smgis-accent);
}

.tool-submit {
  background: var(--smgis-accent);
  border-color: var(--smgis-accent);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 28px;
  border-radius: 4px;
}

.tool-submit:hover,
.tool-submit:focus {
  background: var(--smgis-accent-dark);
  border-color: var(--smgis-accent-dark);
}

.tool-submit:disabled { opacity: 0.45; cursor: not-allowed; filter: grayscale(0.3); }

/* Visible keyboard focus throughout */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--smgis-accent);
  outline-offset: 2px;
}

/* ---------- Result panel ---------- */

.result-panel {
  border: 1px solid var(--smgis-border);
  border-radius: 4px;
  background: var(--smgis-bg);
  padding: 18px 20px;
}

.result-panel.is-error {
  border-color: var(--smgis-danger);
  background: var(--smgis-danger-soft);
}

.result-label {
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--smgis-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.result-panel.is-error .result-label {
  color: var(--smgis-danger);
}

.result-value {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 500;
  color: var(--smgis-data-dark);
  word-break: break-word;
}

.result-panel.is-error .result-value {
  font-family: var(--font-sans);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--smgis-danger);
}

.result-panel.is-placeholder .result-value {
  font-family: var(--font-sans);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--smgis-muted);
  font-style: italic;
}

.result-sub {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--smgis-muted);
  margin-top: 8px;
}

.copy-btn {
  border: 1px solid var(--smgis-border);
  background: #fff;
  color: var(--smgis-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 4px;
  margin-top: 12px;
}

.copy-btn:hover {
  border-color: var(--smgis-accent);
  color: var(--smgis-accent-dark);
}

.copy-btn.copied {
  color: var(--smgis-accent-dark);
  border-color: var(--smgis-accent);
}

/* ---------- Footer ---------- */

.tool-footnote {
  font-size: 12.5px;
  color: var(--smgis-muted);
  margin-top: 20px;
  text-align: center;
}

.tool-footer {
  border-top: 1px solid var(--smgis-border);
  padding: 16px 0;
  font-size: 12.5px;
  color: var(--smgis-muted);
  text-align: center;
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 576px) {
  .tool-card .card-body {
    padding: 20px;
  }
  .result-value {
    font-size: 17px;
  }
}

/* ---------- SEO content section ---------- */
.seo-content h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--smgis-ink);
  margin-bottom: 16px;
}
.seo-content h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--smgis-ink);
  margin-bottom: 4px;
}
.seo-content p {
  font-size: 13.5px;
  color: var(--smgis-muted);
  line-height: 1.6;
  margin-bottom: 0;
}
.seo-faq { display: flex; flex-direction: column; gap: 18px; }
.faq-item {
  border-bottom: 1px solid var(--smgis-border);
  padding-bottom: 16px;
}
.faq-item:last-child { border-bottom: none; }
.seo-cta {
  background: var(--smgis-bg);
  border: 1px solid var(--smgis-border);
  border-radius: 6px;
  padding: 20px 22px;
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.seo-cta p {
  color: var(--smgis-ink);
  font-size: 13.5px;
  margin-bottom: 0;
  max-width: 60ch;
}
.seo-cta .site-nav-cta { flex-shrink: 0; }

/* ---------- Loading spinner (shared brand mark, used during upload/processing) ---------- */
.smgis-spinner {
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
  width: 48px; height: 48px; border-radius: 11px; background: var(--smgis-data); color: #fff;
}
.smgis-spinner svg { width: 30px; height: 30px; }

/* Small/inline (buttons): a detailed path animation doesn't read
   legibly at tiny sizes no matter the container size — a simple
   pulsing-dot indicator in brand colors instead, always clearly visible. */
.smgis-dots { display: inline-flex; gap: 4px; align-items: center; margin-right: 8px; vertical-align: middle; }
.smgis-dots span { width: 6px; height: 6px; border-radius: 50%; background: currentColor; animation: smgis-dot-pulse 1.1s ease-in-out infinite; }
.smgis-dots span:nth-child(2) { animation-delay: 0.15s; }
.smgis-dots span:nth-child(3) { animation-delay: 0.3s; }
@keyframes smgis-dot-pulse { 0%, 60%, 100% { opacity: 0.3; transform: scale(0.8); } 30% { opacity: 1; transform: scale(1.15); } }

.smgis-loading-block {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 28px 16px; text-align: center;
}
.smgis-loading-block .loading-status { font-size: 13.5px; font-weight: 600; color: var(--smgis-ink, #1E2A32); }
.smgis-loading-block .loading-sub { font-size: 12px; color: var(--smgis-muted); }

@media (prefers-reduced-motion: reduce) {
  .smgis-spinner animateMotion { display: none; }
  .smgis-dots span { animation: none !important; opacity: 0.7 !important; }
}

/* ---------- Info banners (from KML Studio's shared pattern) ---------- */
.hb { border-radius: 6px; padding: 10px 14px; font-size: 13px; line-height: 1.6; margin-bottom: 16px; }
.hb-blue { background: var(--smgis-accent-soft); border: 1px solid var(--smgis-accent); color: var(--smgis-accent-dark); }
.brow { margin-top: 20px; }