/* ============================================================
   Fire Pit Gravel Calculator — Page Styles
   fire-pit-gravel-calculator.css
   Color: green #16A34A, warm accents
   ============================================================ */

/* ── Hero ────────────────────────────────────────────────── */
.fpc-hero {
  display: flex; gap: 3rem; align-items: center;
  max-width: 1200px; margin: 0 auto; padding: 4rem 2rem;
}
.fpc-hero-copy { flex: 1; }
.fpc-hero-copy h1 {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 800;
  color: var(--ds-text); line-height: 1.15; margin: 0.5rem 0 1rem;
}
.fpc-hero-copy h1 span { color: var(--ds-primary, #16A34A); }
.fpc-hero-visual { flex: 1; min-width: 0; }
.fpc-hero-visual svg { width: 100%; height: auto; max-height: 300px; }

.hero-badge {
  display: inline-block; background: var(--ds-primary-bg, #f0fdf4);
  color: var(--ds-primary, #16A34A); font-size: 0.8rem;
  font-weight: 600; padding: 0.3rem 0.8rem; border-radius: 99px;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.hero-subtitle {
  font-size: 1.1rem; color: var(--ds-text-secondary, #475569);
  line-height: 1.6; margin-bottom: 1.5rem;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--ds-primary, #16A34A); color: #fff;
  padding: 0.8rem 1.75rem; border-radius: 8px; font-weight: 700;
  font-size: 1rem; text-decoration: none; transition: background .2s;
}
.hero-cta:hover { background: var(--ds-primary-hover, #15803D); }

@media (max-width: 768px) {
  .fpc-hero { flex-direction: column; gap: 2rem; padding: 2.5rem 1.25rem; text-align: center; }
  .fpc-hero-visual { max-width: 350px; margin: 0 auto; }
  .fpc-hero-visual svg { max-height: 220px; }
}

/* ── Calculator Section ──────────────────────────────────── */
.fpc-calc-section {
  max-width: 900px; margin: 0 auto; padding: 2rem 2rem 4rem;
}
.fpc-calc-section-title {
  font-size: 1.75rem; font-weight: 700; color: var(--ds-text);
  margin: 0 0 1.5rem;
}
.fpc-calc-card {
  background: var(--ds-card, #fff); border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 12px; padding: 2rem;
}
.fpc-field { margin-bottom: 1rem; }
.fpc-field label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--ds-text-secondary, #475569); margin-bottom: 0.4rem;
}
.fpc-field input, .fpc-field select {
  width: 100%; padding: 0.65rem 0.75rem; border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 8px; font-size: 1rem; background: var(--ds-bg, #fff);
  color: var(--ds-text); box-sizing: border-box;
  transition: border-color .2s;
}
.fpc-field input:focus, .fpc-field select:focus {
  outline: none; border-color: var(--ds-primary, #16A34A);
  box-shadow: 0 0 0 3px rgba(22,163,74,0.12);
}
.fpc-field input::placeholder { color: var(--ds-text-muted, #94a3b8); }

/* Input grid */
.fpc-input-grid { display: grid; gap: 1rem; }
.fpc-input-grid.col-2 { grid-template-columns: 1fr 1fr; }
.fpc-input-grid.col-3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 640px) {
  .fpc-input-grid.col-3 { grid-template-columns: 1fr; }
  .fpc-input-grid.col-2 { grid-template-columns: 1fr; }
}

/* ── Project Type Tabs ───────────────────────────────────── */
.fpc-project-tabs {
  display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.25rem;
}
.fpc-project-btn {
  flex: 1; min-width: 130px; padding: 0.7rem 0.75rem;
  border: 2px solid var(--ds-border, #e2e8f0); border-radius: 8px;
  background: var(--ds-card, #fff); cursor: pointer; font-size: 0.85rem;
  font-weight: 600; color: var(--ds-text-secondary, #475569);
  transition: all .2s; text-align: center;
}
.fpc-project-btn:hover { border-color: var(--ds-primary, #16A34A); color: var(--ds-primary, #16A34A); }
.fpc-project-btn.active {
  border-color: var(--ds-primary, #16A34A); background: var(--ds-primary-bg, #f0fdf4);
  color: var(--ds-primary, #16A34A);
}

/* Recommended badge */
.fpc-recommended {
  font-size: 0.82rem; color: var(--ds-primary, #16A34A);
  font-weight: 600; margin-top: 0.5rem; padding: 0.35rem 0.75rem;
  background: var(--ds-primary-bg, #f0fdf4); border-radius: 6px;
  display: inline-block;
}

/* ── Shape Tabs ──────────────────────────────────────────── */
.fpc-shape-tabs { display: flex; gap: 0.5rem; margin-bottom: 0.5rem; }
.fpc-shape-btn {
  flex: 1; padding: 0.55rem 0.75rem; border: 2px solid var(--ds-border, #e2e8f0);
  border-radius: 8px; background: var(--ds-card, #fff); cursor: pointer;
  font-size: 0.85rem; font-weight: 600; color: var(--ds-text-secondary, #475569);
  transition: all .2s; text-align: center;
}
.fpc-shape-btn:hover { border-color: var(--ds-primary, #16A34A); }
.fpc-shape-btn.active {
  border-color: var(--ds-primary, #16A34A); background: var(--ds-primary-bg, #f0fdf4);
  color: var(--ds-primary, #16A34A);
}
.fpc-unit-toggle { display: flex; gap: 0.5rem; }
.fpc-unit-btn {
  padding: 0.4rem 1rem; border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 6px; background: var(--ds-card, #fff); cursor: pointer;
  font-size: 0.8rem; font-weight: 600; color: var(--ds-text-secondary, #475569);
}
.fpc-unit-btn.active {
  border-color: var(--ds-primary, #16A34A); background: var(--ds-primary-bg, #f0fdf4);
  color: var(--ds-primary, #16A34A);
}

/* ── Bag Selector ────────────────────────────────────────── */
.fpc-bag-selector { display: flex; gap: 0.5rem; }
.fpc-bag-option {
  flex: 1; padding: 0.6rem; border: 2px solid var(--ds-border, #e2e8f0);
  border-radius: 8px; cursor: pointer; text-align: center;
  transition: all .2s;
}
.fpc-bag-option:hover { border-color: var(--ds-primary, #16A34A); }
.fpc-bag-option.active {
  border-color: var(--ds-primary, #16A34A); background: var(--ds-primary-bg, #f0fdf4);
}
.bag-weight { display: block; font-weight: 700; font-size: 1.1rem; color: var(--ds-text); }
.bag-label { display: block; font-size: 0.75rem; color: var(--ds-text-secondary, #475569); }

/* ── Results ─────────────────────────────────────────────── */
.fpc-results {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1rem; margin-top: 1.5rem;
}
.fpc-result-card {
  background: var(--ds-bg, #f8fafc); border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 10px; padding: 1rem; text-align: center;
}
.result-icon { font-size: 1.5rem; margin-bottom: 0.35rem; }
.result-value {
  font-size: clamp(1.1rem, 2vw, 1.5rem); font-weight: 800; color: var(--ds-text);
}
.result-label { font-size: 0.75rem; color: var(--ds-text-secondary, #475569); margin-top: 0.2rem; }

@media (max-width: 640px) {
  .fpc-results { grid-template-columns: 1fr 1fr; }
}

/* ── Detail Breakdown ────────────────────────────────────── */
.fpc-detail { margin-top: 1.5rem; }
.fpc-detail-tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.fpc-detail-btn {
  padding: 0.45rem 1rem; border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 6px; background: var(--ds-card, #fff); cursor: pointer;
  font-size: 0.8rem; font-weight: 600; color: var(--ds-text-secondary, #475569);
}
.fpc-detail-btn.active {
  border-color: var(--ds-primary, #16A34A); color: var(--ds-primary, #16A34A);
  background: var(--ds-primary-bg, #f0fdf4);
}
.fpc-detail-panel { display: none; }
.fpc-detail-panel.active { display: block; }
.fpc-detail-list { font-size: 0.9rem; line-height: 1.8; color: var(--ds-text); }
.fpc-detail-list strong { color: var(--ds-text); margin-right: 0.5rem; }
.fpc-formula-box {
  margin-top: 1rem; padding: 0.75rem 1rem; background: var(--ds-primary-bg, #f0fdf4);
  border-radius: 8px; border: 1px solid rgba(22,163,74,0.2);
}
.formula-text {
  font-family: 'SF Mono', 'Consolas', monospace; font-size: 0.85rem;
  color: var(--ds-primary, #16A34A); font-weight: 600;
}

/* ── Content Sections ────────────────────────────────────── */
.fpc-content {
  max-width: 900px; margin: 0 auto; padding: 2rem 2rem 4rem;
}
.fpc-content h2 {
  font-size: 1.5rem; font-weight: 700; color: var(--ds-text); margin: 0 0 0.75rem;
}
.fpc-content p {
  font-size: 1rem; color: var(--ds-text-secondary, #475569); line-height: 1.7;
  margin: 0 0 1rem;
}

/* ── Tables ──────────────────────────────────────────────── */
.fpc-table {
  width: 100%; border-collapse: collapse; margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}
.fpc-table th {
  background: var(--ds-primary-bg, #f0fdf4); padding: 0.7rem; text-align: left;
  font-weight: 700; color: var(--ds-primary, #16A34A); border-bottom: 2px solid var(--ds-primary, #16A34A);
}
.fpc-table td { padding: 0.7rem; border-bottom: 1px solid var(--ds-border, #e2e8f0); color: var(--ds-text); }
.fpc-table tr:hover td { background: var(--ds-bg, #f8fafc); }

/* ── Callout ─────────────────────────────────────────────── */
.fpc-callout {
  background: var(--ds-primary-bg, #f0fdf4); border: 1px solid rgba(22,163,74,0.15);
  border-radius: 8px; padding: 1rem 1.25rem; margin: 1rem 0;
  font-size: 0.9rem; line-height: 1.6; color: var(--ds-text);
}

/* ── Gravel Comparison Cards ─────────────────────────────── */
.fpc-gravel-cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  margin: 1rem 0 1.5rem;
}
.fpc-gravel-card {
  background: var(--ds-card, #fff); border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 10px; padding: 1.25rem;
}
.gv-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.gv-name { font-size: 1.05rem; font-weight: 700; color: var(--ds-text); margin-bottom: 0.5rem; }
.gv-pros { font-size: 0.85rem; color: var(--ds-primary, #16A34A); line-height: 1.6; margin-bottom: 0.35rem; }
.gv-cons { font-size: 0.85rem; color: #dc2626; line-height: 1.6; margin-bottom: 0.35rem; }
.gv-best { font-size: 0.85rem; font-weight: 600; color: var(--ds-text); margin-top: 0.5rem; padding-top: 0.5rem; border-top: 1px solid var(--ds-border, #e2e8f0); }

@media (max-width: 768px) {
  .fpc-gravel-cards { grid-template-columns: 1fr; }
}

/* ── Material Cards (clickable) ──────────────────────────── */
.fpc-material-cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.75rem;
  margin: 1rem 0 1.5rem;
}
.fpc-material-card {
  padding: 1rem; border: 2px solid var(--ds-border, #e2e8f0);
  border-radius: 10px; text-align: center; cursor: pointer;
  transition: all .2s;
}
.fpc-material-card:hover {
  border-color: var(--ds-primary, #16A34A); box-shadow: 0 2px 8px rgba(22,163,74,0.1);
}
.mat-icon { font-size: 1.75rem; margin-bottom: 0.35rem; }
.mat-name { font-weight: 700; font-size: 0.95rem; color: var(--ds-text); margin-bottom: 0.25rem; }
.mat-density { font-size: 0.8rem; color: var(--ds-text-secondary, #475569); margin-bottom: 0.25rem; }
.mat-best { font-size: 0.75rem; color: var(--ds-primary, #16A34A); font-weight: 600; }

@media (max-width: 768px) {
  .fpc-material-cards { grid-template-columns: 1fr 1fr; }
}

/* ── Cost Card ───────────────────────────────────────────── */
.fpc-cost-card {
  background: var(--ds-card, #fff); border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 10px; padding: 1.25rem; margin-top: 1rem;
}
.fpc-cost-row {
  display: flex; justify-content: space-between; padding: 0.4rem 0;
  border-bottom: 1px solid var(--ds-border, #e2e8f0);
  font-size: 0.9rem; color: var(--ds-text);
}
.fpc-cost-row:last-child { border: none; }

/* ── Examples ────────────────────────────────────────────── */
.fpc-examples { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1rem 0; }
.fpc-example-card {
  background: var(--ds-card, #fff); border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 10px; padding: 1.25rem;
}
.ex-icon { font-size: 2rem; margin-bottom: 0.5rem; }
.ex-title { font-size: 1.05rem; font-weight: 700; color: var(--ds-text); margin-bottom: 0.5rem; }
.ex-detail { font-size: 0.85rem; color: var(--ds-text-secondary, #475569); line-height: 1.7; margin-bottom: 0.5rem; }
.ex-result {
  font-size: 0.9rem; font-weight: 700; color: var(--ds-primary, #16A34A);
  padding-top: 0.5rem; border-top: 1px solid var(--ds-border, #e2e8f0);
}
@media (max-width: 640px) {
  .fpc-examples { grid-template-columns: 1fr; }
}

/* ── Steps ───────────────────────────────────────────────── */
.fpc-steps { margin: 1rem 0 1.5rem; }
.fpc-step {
  display: flex; gap: 1rem; margin-bottom: 1rem;
}
.fpc-step-num {
  flex-shrink: 0; width: 36px; height: 36px; background: var(--ds-primary, #16A34A);
  color: #fff; border-radius: 50%; display: flex; align-items: center;
  justify-content: center; font-weight: 800; font-size: 1rem;
}
.fpc-step-body h4 { margin: 0 0 0.3rem; font-size: 1rem; color: var(--ds-text); }
.fpc-step-body p { font-size: 0.9rem; color: var(--ds-text-secondary, #475569); line-height: 1.6; margin: 0; }

/* ── FAQ ─────────────────────────────────────────────────── */
.fpc-faq { margin: 1rem 0; }
.fpc-faq-item { border: 1px solid var(--ds-border, #e2e8f0); border-radius: 8px; margin-bottom: 0.5rem; overflow: hidden; }
.fpc-faq-q {
  width: 100%; padding: 1rem; display: flex; justify-content: space-between;
  align-items: center; background: var(--ds-card, #fff); border: none;
  cursor: pointer; font-size: 0.95rem; font-weight: 600; color: var(--ds-text); text-align: left;
}
.fpc-faq-q:hover { background: var(--ds-bg, #f8fafc); }
.faq-icon { font-size: 1.2rem; color: var(--ds-primary, #16A34A); transition: transform .2s; }
.fpc-faq-q[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.fpc-faq-a { display: none; padding: 0 1rem 1rem; }
.fpc-faq-a p { font-size: 0.9rem; color: var(--ds-text-secondary, #475569); line-height: 1.7; margin: 0; }

/* ── Internal Links ──────────────────────────────────────── */
.fpc-internal-links {
  display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem;
}
.fpc-internal-link {
  display: inline-block; padding: 0.5rem 1rem; border: 1px solid var(--ds-border, #e2e8f0);
  border-radius: 8px; text-decoration: none; font-size: 0.85rem;
  font-weight: 600; color: var(--ds-primary, #16A34A); transition: all .2s;
}
.fpc-internal-link:hover {
  background: var(--ds-primary-bg, #f0fdf4); border-color: var(--ds-primary, #16A34A);
}

/* ── Compare Table ───────────────────────────────────────── */
.fpc-compare-table {
  width: 100%; border-collapse: collapse; margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}
.fpc-compare-table th {
  background: var(--ds-primary-bg, #f0fdf4); padding: 0.7rem; text-align: left;
  font-weight: 700; color: var(--ds-primary, #16A34A); border-bottom: 2px solid var(--ds-primary, #16A34A);
}
.fpc-compare-table td {
  padding: 0.7rem; border-bottom: 1px solid var(--ds-border, #e2e8f0); color: var(--ds-text); line-height: 1.5;
}
.compare-feature { font-weight: 600; color: var(--ds-text); }
.fpc-compare-table tr:hover td { background: var(--ds-bg, #f8fafc); }