/* GST HSN Finder tool page — gf-* prefix */

/* ---------- Hero ---------- */
.gf-hero {
  padding: calc(var(--header-h) + var(--space-2xl)) 0 var(--space-xl);
  background:
    radial-gradient(60% 120% at 15% 0%, var(--accent-soft) 0%, transparent 60%),
    var(--off-white);
}

.gf-breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
}

.gf-breadcrumb a { color: var(--accent); text-decoration: none; }
.gf-breadcrumb a:hover { text-decoration: underline; }

.gf-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.1;
}

.gf-subtitle {
  margin-top: var(--space-md);
  max-width: 46rem;
  font-size: 1.075rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ---------- Tool ---------- */
.gf-tool-section { padding: var(--space-lg) 0 var(--space-2xl); background: var(--off-white); }

.gf-card {
  background: var(--white);
  border: 1px solid var(--surface);
  border-radius: 14px;
  box-shadow: 0 10px 30px -18px rgba(15, 23, 42, 0.18);
  padding: var(--space-xl);
}

.gf-form { max-width: 46rem; margin-inline: auto; }

.gf-field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: var(--space-md); }
.gf-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }

.gf-field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink);
}

.gf-required { color: #dc2626; }
.gf-optional { color: var(--muted); font-weight: 500; font-size: 0.82rem; }

.gf-form input,
.gf-form textarea,
.gf-form select {
  font: inherit;
  color: var(--ink);
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--clay);
  border-radius: 8px;
  background: var(--white);
  transition: border-color 0.15s var(--ease), box-shadow 0.15s var(--ease);
  width: 100%;
}

.gf-form textarea { resize: vertical; }

.gf-form input:focus,
.gf-form textarea:focus,
.gf-form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.gf-hint { font-size: 0.8rem; color: var(--muted); }

.gf-submit {
  width: 100%;
  height: auto;
  padding: 0.8rem 1.25rem;
  font-size: 1rem;
  margin-top: var(--space-xs);
}

.gf-submit[disabled] { opacity: 0.65; cursor: not-allowed; }

.gf-error {
  margin-top: var(--space-md);
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  font-size: 0.9rem;
}

/* ---------- Result ---------- */
.gf-result { max-width: 46rem; margin: var(--space-xl) auto 0; }

.gf-result-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-sm);
}

.gf-code-type {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
}

.gf-code {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.gf-copy {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--white);
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  cursor: pointer;
  transition: background 0.15s var(--ease);
}

.gf-copy:hover { background: var(--accent-soft); }

.gf-confidence {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted-60);
  margin-left: auto;
}

.gf-code-desc { color: var(--ink-soft); font-size: 0.95rem; }

.gf-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.gf-card-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-60);
  margin-bottom: var(--space-sm);
}

.gf-rate-row {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
}

.gf-rate-row.is-default { background: var(--accent-soft); border: 1px solid var(--accent-border); }

.gf-rate-value {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--accent);
  min-width: 4.2rem;
}

.gf-rate-condition { font-size: 0.85rem; color: var(--ink-soft); }

.gf-norms ul { padding-left: 1.1rem; display: grid; gap: 0.45rem; }
.gf-norms li { font-size: 0.9rem; line-height: 1.55; color: var(--ink-soft); }

.gf-rationale {
  margin-top: var(--space-md);
  font-size: 0.85rem;
  color: var(--muted-60);
  line-height: 1.6;
}

.gf-disclaimer {
  margin-top: var(--space-sm);
  font-size: 0.78rem;
  color: var(--muted);
  border-top: 1px dashed var(--surface);
  padding-top: var(--space-sm);
}

.gf-tool-disclaimer {
  max-width: 46rem;
  margin: var(--space-lg) auto 0;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---------- Content sections ---------- */
.gf-section { background: var(--white); }
.gf-section.gf-alt { background: var(--off-white); }

.gf-h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: var(--space-lg);
}

.gf-p {
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.gf-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.gf-step {
  background: var(--white);
  border: 1px solid var(--surface);
  border-radius: 12px;
  padding: var(--space-lg);
}

.gf-section.gf-alt .gf-step { border-color: var(--surface); box-shadow: 0 8px 24px -18px rgba(15, 23, 42, 0.15); }

.gf-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--gradient);
  color: var(--white);
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.gf-step h3 { font-size: 1.05rem; font-weight: 700; color: var(--ink); margin-bottom: 0.4rem; }
.gf-step p { font-size: 0.9rem; line-height: 1.6; color: var(--ink-soft); }

/* ---------- Table ---------- */
.gf-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--surface);
  border-radius: 12px;
  background: var(--white);
  margin-bottom: var(--space-lg);
}

.gf-table { width: 100%; border-collapse: collapse; min-width: 540px; }

.gf-table th,
.gf-table td {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--chalk);
}

.gf-table th {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-60);
  background: var(--chalk);
}

.gf-table td:first-child { font-weight: 700; color: var(--accent); white-space: nowrap; }
.gf-table td:last-child { color: var(--ink-soft); }
.gf-table tbody tr:last-child td { border-bottom: none; }

/* ---------- Two-column ---------- */
.gf-cols { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); align-items: start; }

.gf-cta-row { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space-md); }

/* ---------- FAQ ---------- */
.gf-faq { display: grid; gap: var(--space-sm); max-width: 46rem; }

.gf-faq details {
  background: var(--white);
  border: 1px solid var(--surface);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
}

.gf-faq summary {
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  font-size: 0.97rem;
}

.gf-faq details[open] summary { color: var(--accent); }

.gf-faq details p {
  margin-top: 0.6rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ---------- Bottom CTA ---------- */
.gf-cta {
  background: var(--gradient);
  text-align: center;
}

.gf-cta .gf-h2 { color: var(--white); }
.gf-cta .gf-p { color: rgba(255, 255, 255, 0.85); }
.gf-cta .gf-cta-row { justify-content: center; }
.gf-cta .btn-secondary { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, 0.5); }
.gf-cta .btn-secondary:hover { background: rgba(255, 255, 255, 0.12); }

/* ---------- Responsive ---------- */
@media (max-width: 767px) {
  .gf-row,
  .gf-result-grid,
  .gf-cols { grid-template-columns: 1fr; }
  .gf-steps { grid-template-columns: 1fr; }
  .gf-hero { padding-top: calc(var(--header-h) + var(--space-xl)); }
}