/* =============================================
   hospitalvaidik.in — Tool Page Styles
   ============================================= */

/* ---- Tool Layout ---- */
.tool-page { padding: 2.5rem 1.5rem; }
.tool-page-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
  align-items: start;
}
.tool-main {}
.tool-sidebar {}

/* ---- Tool Hero ---- */
.tool-hero {
  background: linear-gradient(135deg, #ecfdf5, #e0f2fe);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(16,185,129,0.15);
}
[data-theme="dark"] .tool-hero { background: linear-gradient(135deg, #064e3b22, #0c4a6e22); }
.tool-hero-badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  background: var(--primary); color: #fff;
  padding: 0.3rem 0.9rem; border-radius: 50px;
  font-size: 0.75rem; font-weight: 600;
  margin-bottom: 0.75rem;
}
.tool-hero h1 { margin-bottom: 0.5rem; }
.tool-hero p { margin: 0; }

/* ---- Calculator Box ---- */
.calc-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
}
.calc-header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 1.25rem 1.5rem;
  display: flex; align-items: center; gap: 0.75rem;
  color: #fff;
}
.calc-header h2 { color: #fff; font-size: 1.15rem; margin: 0; }
.calc-header-icon { font-size: 1.4rem; }
.calc-body { padding: 1.5rem; }

/* ---- Form Controls ---- */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block; font-weight: 600; font-size: 0.88rem;
  color: var(--text); margin-bottom: 0.4rem;
}
.form-label span { color: var(--text-muted); font-weight: 400; font-size: 0.8rem; }
.form-control {
  width: 100%;
  padding: 0.65rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(16,185,129,0.12); }
.form-control.error { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(239,68,68,0.12); }
.form-error { color: var(--danger); font-size: 0.78rem; margin-top: 0.3rem; display: none; }
.form-error.show { display: block; }

.input-with-unit {
  display: flex; gap: 0.5rem; align-items: center;
}
.input-with-unit .form-control { flex: 1; }
.unit-select {
  padding: 0.65rem 0.75rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
  color: var(--text);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
  min-width: 70px;
}
.unit-select:focus { border-color: var(--primary); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ---- Toggle (imperial/metric) ---- */
.unit-toggle {
  display: flex; align-items: center;
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  border-radius: 50px;
  padding: 3px;
  width: fit-content;
  margin-bottom: 1.25rem;
}
.unit-btn {
  padding: 0.4rem 1rem;
  border-radius: 50px;
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.unit-btn.active { background: var(--primary); color: #fff; }

/* ---- Result Box ---- */
.result-box {
  background: linear-gradient(135deg, #ecfdf5, #e0f2fe);
  border: 1.5px solid rgba(16,185,129,0.25);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 1.25rem;
  display: none;
  animation: fadeUp 0.4s ease;
}
[data-theme="dark"] .result-box { background: linear-gradient(135deg, #064e3b22, #0c4a6e22); }
.result-box.show { display: block; }
.result-label { font-size: 0.82rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; }
.result-value { font-size: 2.5rem; font-weight: 800; color: var(--primary); font-family: 'Nunito', sans-serif; line-height: 1; }
.result-unit { font-size: 1rem; color: var(--text-muted); margin-left: 0.2rem; }
.result-interp {
  margin-top: 1rem; padding-top: 1rem;
  border-top: 1px solid rgba(16,185,129,0.2);
}
.result-interp .interp-badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.3rem 0.85rem; border-radius: 50px;
  font-size: 0.82rem; font-weight: 700;
  margin-bottom: 0.4rem;
}
.interp-underweight { background: #dbeafe; color: #1d4ed8; }
.interp-normal { background: #d1fae5; color: #065f46; }
.interp-overweight { background: #fef3c7; color: #92400e; }
.interp-obese { background: #fee2e2; color: #991b1b; }
.interp-low { background: #dbeafe; color: #1d4ed8; }
.interp-moderate { background: #fef3c7; color: #92400e; }
.interp-high { background: #fee2e2; color: #991b1b; }
.interp-optimal { background: #d1fae5; color: #065f46; }
.interp-text { font-size: 0.87rem; color: var(--text-muted); margin: 0; }

/* Multi-result grid */
.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.result-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}
.result-item .r-label { font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; font-weight: 600; margin-bottom: 0.25rem; }
.result-item .r-value { font-size: 1.3rem; font-weight: 800; color: var(--primary); font-family: 'Nunito', sans-serif; }
.result-item .r-unit { font-size: 0.72rem; color: var(--text-muted); }

/* ---- Reference Table ---- */
.ref-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.85rem; margin-top: 1rem;
}
.ref-table th {
  background: var(--bg-alt);
  padding: 0.6rem 0.85rem;
  text-align: left; font-weight: 600;
  border: 1px solid var(--border);
  color: var(--text);
}
.ref-table td {
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.ref-table tr:nth-child(even) td { background: var(--bg-alt); }
.ref-table .highlight td { background: #d1fae5 !important; font-weight: 600; }
[data-theme="dark"] .ref-table .highlight td { background: #064e3b44 !important; }

/* ---- Content Sections ---- */
.content-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.content-section h2 { font-size: 1.3rem; margin-bottom: 1rem; }
.content-section h3 { font-size: 1.05rem; margin: 1.25rem 0 0.5rem; }
.content-section p { font-size: 0.92rem; }
.content-section ul, .content-section ol {
  padding-left: 1.25rem; color: var(--text-muted); font-size: 0.92rem;
}
.content-section ul li, .content-section ol li { margin-bottom: 0.35rem; }

/* ---- Formula Box ---- */
.formula-box {
  background: var(--bg-alt);
  border: 1.5px dashed var(--primary);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.7;
}

/* ---- FAQ ---- */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.faq-q {
  padding: 1rem 1.25rem;
  font-weight: 600; font-size: 0.92rem;
  cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  background: var(--bg-card);
  transition: var(--transition);
  color: var(--text);
}
.faq-q:hover { background: var(--primary-light); color: var(--primary-dark); }
.faq-q .faq-icon { transition: transform 0.3s ease; font-size: 1rem; color: var(--primary); }
.faq-item.open .faq-q { background: var(--primary-light); color: var(--primary-dark); }
.faq-item.open .faq-q .faq-icon { transform: rotate(45deg); }
.faq-a {
  display: none; padding: 0 1.25rem 1rem;
  font-size: 0.88rem; color: var(--text-muted);
  background: var(--bg-card);
  line-height: 1.6;
}
.faq-item.open .faq-a { display: block; }

/* ---- Sidebar ---- */
.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.sidebar-card h3 { font-size: 1rem; margin-bottom: 1rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--border); }
.related-tool-link {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.87rem;
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
  border: 1px solid transparent;
}
.related-tool-link:hover { background: var(--primary-light); color: var(--primary-dark); border-color: rgba(16,185,129,0.2); }
.related-tool-link .rte-icon { width: 32px; height: 32px; border-radius: 8px; background: var(--primary-light); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; flex-shrink: 0; }

/* ---- Share ---- */
.share-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.82rem; font-weight: 600;
  border: 1.5px solid var(--border);
  background: var(--bg-alt);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.share-btn:hover { border-color: var(--primary); color: var(--primary); }
.share-bar { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.75rem; }

/* ---- Back Button ---- */
.back-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  background: none; border: none;
  padding: 0;
}
.back-btn:hover { color: var(--primary); }

/* ---- Responsive Tool ---- */
@media (max-width: 900px) {
  .tool-page-inner { grid-template-columns: 1fr; }
  .tool-sidebar { order: -1; display: none; }
}
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .tool-hero { padding: 1.25rem; }
  .calc-body { padding: 1rem; }
  .result-value { font-size: 2rem; }
}