/* ═══════════════════════════════════════════════════════════════
 * Bending Force Calculator + V-die table
 * Used on news article: /news/calcolatore-forza-piega/ (+ EN twin)
 *
 * Design: editorial card, big number tonnage output (count-up animated),
 * inputs in monospace-flavored grid, V-die table with sticky header
 * and accent-highlighted recommended row.
 *
 * Style tokens follow theme convention: Space Grotesk + JetBrains Mono,
 * accent #E30613, lines #E5E3DE, ink #0A0A0A.
 * ═══════════════════════════════════════════════════════════════ */

.bcalc-wrap {
  margin: clamp(40px, 6vw, 80px) 0;
  font-family: 'Space Grotesk', sans-serif;
}

/* ─── Calculator card ─────────────────────────────────────────── */
.bcalc {
  background: var(--white, #fff);
  border: 1px solid var(--ink, #0A0A0A);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.bcalc::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--accent, #E30613);
}

.bcalc-head {
  padding: clamp(24px, 4vw, 40px) clamp(24px, 4vw, 48px) clamp(16px, 2.5vw, 24px);
  border-bottom: 1px solid var(--line, #E5E3DE);
}
.bcalc-eye {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent, #E30613);
  margin-bottom: 12px;
}
.bcalc-title {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink, #0A0A0A);
}

.bcalc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 0;
}
@media (max-width: 860px) {
  .bcalc-grid { grid-template-columns: 1fr; }
}

/* ─── Inputs side ─────────────────────────────────────────────── */
.bcalc-inputs {
  padding: clamp(24px, 4vw, 40px) clamp(24px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px 32px;
  border-right: 1px solid var(--line, #E5E3DE);
}
@media (max-width: 860px) {
  .bcalc-inputs { border-right: none; border-bottom: 1px solid var(--line, #E5E3DE); }
}
@media (max-width: 540px) {
  .bcalc-inputs { grid-template-columns: 1fr; gap: 20px; }
}

.bcalc-field { display: flex; flex-direction: column; gap: 8px; }
.bcalc-field-full { grid-column: 1 / -1; }

.bcalc-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted, #6B6B6B);
}

.bcalc-input,
.bcalc-select {
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--ink, #0A0A0A);
  background: var(--bg, #FAFAF7);
  border: 1px solid var(--line, #E5E3DE);
  border-radius: 0;
  padding: 12px 14px;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color .15s, background .15s;
  width: 100%;
  min-height: 44px;
}
.bcalc-select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path d='M2 4l4 4 4-4' stroke='%236B6B6B' stroke-width='1.4' fill='none' stroke-linecap='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px;
  padding-right: 36px;
  cursor: pointer;
}
.bcalc-input:focus,
.bcalc-select:focus {
  border-color: var(--accent, #E30613);
  background: var(--white, #fff);
}

.bcalc-radio-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--line, #E5E3DE);
  border-radius: 0;
  overflow: hidden;
}
.bcalc-radio-group label {
  flex: 1;
  position: relative;
}
.bcalc-radio-group input { position: absolute; opacity: 0; pointer-events: none; }
.bcalc-radio-group span {
  display: block;
  padding: 12px 8px;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted, #6B6B6B);
  background: var(--bg, #FAFAF7);
  cursor: pointer;
  transition: background .15s, color .15s;
  border-right: 1px solid var(--line, #E5E3DE);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bcalc-radio-group label:last-child span { border-right: none; }
.bcalc-radio-group input:checked + span {
  background: var(--ink, #0A0A0A);
  color: var(--white, #fff);
}
.bcalc-radio-group label:hover span { background: #f0eee9; }
.bcalc-radio-group input:checked + span:hover { background: var(--ink, #0A0A0A); }

.bcalc-hint {
  font-size: 12px;
  color: var(--muted, #6B6B6B);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.02em;
  line-height: 1.5;
  margin-top: 4px;
}

/* ─── Output side ─────────────────────────────────────────────── */
.bcalc-output {
  padding: clamp(24px, 4vw, 40px) clamp(24px, 4vw, 48px);
  background: var(--bg, #FAFAF7);
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}

.bcalc-out-eye {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted, #6B6B6B);
}

.bcalc-bignum {
  display: flex;
  align-items: baseline;
  gap: 12px;
  line-height: 1;
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: -0.03em;
  color: var(--ink, #0A0A0A);
}
.bcalc-bignum .n {
  font-size: clamp(56px, 9vw, 96px);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}
.bcalc-bignum .u {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 400;
  font-family: 'JetBrains Mono', monospace;
  color: var(--muted, #6B6B6B);
  letter-spacing: 0;
}

.bcalc-secondary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line, #E5E3DE);
}
.bcalc-stat .lbl {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted, #6B6B6B);
  margin-bottom: 6px;
}
.bcalc-stat .val {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 500;
  color: var(--ink, #0A0A0A);
  letter-spacing: -0.01em;
}

/* Compat badge */
.bcalc-compat {
  margin-top: auto;
  padding: 14px 18px;
  border: 1px solid var(--line, #E5E3DE);
  background: var(--white, #fff);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--ink, #0A0A0A);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.bcalc-compat .dot {
  flex: 0 0 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent, #E30613);
  margin-top: 6px;
}
.bcalc-compat strong { font-weight: 600; color: var(--accent, #E30613); }

/* Empty state for output */
.bcalc.is-empty .bcalc-bignum .n { color: var(--line, #E5E3DE); }
.bcalc.is-empty .bcalc-stat .val { color: var(--line, #E5E3DE); }
.bcalc.is-empty .bcalc-compat { display: none; }

/* ─── V-die table ─────────────────────────────────────────────── */
.bcalc-vtable-wrap {
  margin-top: clamp(48px, 7vw, 96px);
}
.bcalc-vtable-head {
  margin-bottom: 24px;
}
.bcalc-vtable-eye {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent, #E30613);
  margin-bottom: 12px;
}
.bcalc-vtable-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin: 0 0 12px;
  color: var(--ink, #0A0A0A);
}
.bcalc-vtable-lede {
  font-size: 16px;
  line-height: 1.55;
  color: var(--muted, #5a5a5a);
  max-width: 60ch;
}

.bcalc-vtable-scroll {
  border: 1px solid var(--line, #E5E3DE);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.bcalc-vtable {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.bcalc-vtable thead th {
  background: var(--ink, #0A0A0A);
  color: var(--white, #fff);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 10px;
  padding: 14px 16px;
  text-align: left;
  position: sticky;
  top: 0;
  white-space: nowrap; /* short labels — never wrap headers */
}
.bcalc-vtable tbody td,
.bcalc-vtable tbody th {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line, #E5E3DE);
  vertical-align: middle;
  text-align: left;
  font-weight: 400;
  color: var(--ink-2, #1C1C1C);
  white-space: nowrap; /* keep "1,3 mm" / "V 6" / "4 t/m" on one line */
}
.bcalc-vtable tbody th { font-weight: 500; color: var(--ink, #0A0A0A); }
.bcalc-vtable tbody tr.is-thickness-head td,
.bcalc-vtable tbody tr.is-thickness-head th {
  background: var(--bg-2, #F2F0EA);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-top: 2px solid var(--ink, #0A0A0A);
  border-bottom: 1px solid var(--ink, #0A0A0A);
  padding-top: 10px;
  padding-bottom: 10px;
}
.bcalc-vtable tbody tr.is-recommended td {
  background: rgba(227, 6, 19, 0.04);
  color: var(--ink, #0A0A0A);
  font-weight: 500;
  position: relative;
}
.bcalc-vtable tbody tr.is-recommended td:first-child::before {
  content: '◆';
  color: var(--accent, #E30613);
  margin-right: 8px;
  font-size: 10px;
}
.bcalc-vtable tbody tr:hover td { background: var(--bg-2, #F2F0EA); }
.bcalc-vtable tbody tr.is-recommended:hover td { background: rgba(227, 6, 19, 0.08); }

.bcalc-vtable-legend {
  margin-top: 16px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--muted, #6B6B6B);
  letter-spacing: 0.02em;
  line-height: 1.6;
}
.bcalc-vtable-legend .lkey { color: var(--accent, #E30613); font-weight: 600; }

/* ─── Dark theme ──────────────────────────────────────────────── */
[data-theme="dark"] .bcalc {
  background: #141414;
  border-color: #2a2a2a;
}
[data-theme="dark"] .bcalc-head { border-color: #2a2a2a; }
[data-theme="dark"] .bcalc-title,
[data-theme="dark"] .bcalc-bignum,
[data-theme="dark"] .bcalc-stat .val,
[data-theme="dark"] .bcalc-vtable-title { color: #fff; }
[data-theme="dark"] .bcalc-inputs { border-color: #2a2a2a; }
[data-theme="dark"] .bcalc-input,
[data-theme="dark"] .bcalc-select { background: #0a0a0a; color: #fff; border-color: #2a2a2a; }
[data-theme="dark"] .bcalc-radio-group { border-color: #2a2a2a; }
[data-theme="dark"] .bcalc-radio-group span { background: #0a0a0a; color: #aaa; border-color: #2a2a2a; }
[data-theme="dark"] .bcalc-radio-group input:checked + span { background: var(--accent, #E30613); color: #fff; }
[data-theme="dark"] .bcalc-output { background: #0a0a0a; }
[data-theme="dark"] .bcalc-compat { background: #141414; border-color: #2a2a2a; color: #fff; }
[data-theme="dark"] .bcalc-vtable-scroll { border-color: #2a2a2a; }
[data-theme="dark"] .bcalc-vtable thead th { background: #fff; color: #0a0a0a; }
[data-theme="dark"] .bcalc-vtable tbody td,
[data-theme="dark"] .bcalc-vtable tbody th { border-color: #1f1f1f; color: #e8e8e8; }
[data-theme="dark"] .bcalc-vtable tbody tr.is-thickness-head td,
[data-theme="dark"] .bcalc-vtable tbody tr.is-thickness-head th { background: #141414; border-color: #2a2a2a; }
[data-theme="dark"] .bcalc-vtable tbody tr.is-recommended td { background: rgba(227, 6, 19, 0.12); color: #fff; }
[data-theme="dark"] .bcalc-vtable tbody tr:hover td { background: #1a1a1a; }