/* ── CALCULATOR PAGE ─────────────────────────────── */

/* Hero */
.calc-hero {
  padding: calc(var(--nav-h) + 4rem) clamp(1.5rem, 5vw, 4rem) 3rem;
  background: var(--ink);
  color: var(--bg);
}
.calc-hero__eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(245,240,232,0.4);
  margin-bottom: 1rem;
}
.calc-hero__title {
  font-size: clamp(2.8rem, 8vw, 7rem);
  line-height: 0.92;
  font-weight: 400;
  margin-bottom: 1.5rem;
}
.calc-hero__serif  { font-family: var(--font-serif); display: block; }
.calc-hero__display {
  font-family: var(--font-display);
  -webkit-text-stroke: 2px var(--bg);
  color: transparent;
  display: block;
}
.calc-hero__sub {
  color: rgba(245,240,232,0.6);
  font-size: 1rem;
  max-width: 480px;
}

/* Tabs */
.calc-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: var(--nav-h);
  z-index: 50;
  overflow-x: auto;
}
.calc-tab {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem clamp(1rem, 3vw, 2.5rem);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 0.2s;
  white-space: nowrap;
}
.calc-tab:hover { background: rgba(0,0,0,0.03); }
.calc-tab.active { border-bottom-color: var(--accent); }
.calc-tab__num {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--accent);
}
.calc-tab__label {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--muted);
}
.calc-tab.active .calc-tab__label { color: var(--ink); }

/* Section */
.calc-section { padding: clamp(3rem, 6vw, 5rem) clamp(1.5rem, 5vw, 4rem); }
.calc-section.hidden { display: none; }

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(3rem, 5vw, 6rem);
  max-width: var(--max-w);
  align-items: start;
}

/* Inputs panel */
.calc-header { margin-bottom: 2.5rem; }
.calc-label {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}
.calc-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  line-height: 1.1;
  font-weight: 400;
  margin-bottom: 0.75rem;
}
.calc-title em { color: var(--accent); font-style: italic; }
.calc-desc { color: var(--muted); font-size: 0.9rem; max-width: 400px; }

/* Fields */
.field { margin-bottom: 1.5rem; }
.field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}
.field-hint {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.4rem;
}
.input-wrap {
  display: flex;
  align-items: center;
  border: 1.5px solid var(--border);
  border-radius: 2px;
  background: white;
  overflow: hidden;
  transition: border-color 0.2s;
}
.input-wrap:focus-within { border-color: var(--ink); }
.input-prefix, .input-suffix {
  padding: 0 0.75rem;
  font-size: 0.9rem;
  color: var(--muted);
  background: var(--bg);
  border-right: 1px solid var(--border);
  height: 100%;
  display: flex;
  align-items: center;
  align-self: stretch;
}
.input-suffix { border-right: none; border-left: 1px solid var(--border); }
.input-wrap input, .input-wrap select {
  flex: 1;
  border: none;
  outline: none;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: white;
  width: 100%;
}
select {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: 2px;
  background: white;
  outline: none;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  cursor: pointer;
}
select:focus { border-color: var(--ink); }

/* Slider */
.slider {
  width: 100%;
  margin-top: 0.6rem;
  -webkit-appearance: none;
  height: 3px;
  background: var(--border);
  border-radius: 99px;
  outline: none;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--ink);
  cursor: pointer;
  transition: background 0.2s;
}
.slider::-webkit-slider-thumb:hover { background: var(--accent); }

/* Results panel */
.calc-results { display: flex; flex-direction: column; gap: 1rem; }

.result-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
}
.result-card--primary { background: var(--ink); border-color: var(--ink); }
.result-card--bitcoin { background: #F7931A; border-color: #F7931A; }
.result-card--fire    { background: var(--accent); border-color: var(--accent); }

.result-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}
.result-card--primary .result-label,
.result-card--bitcoin .result-label,
.result-card--fire .result-label { color: rgba(245,240,232,0.6); }

.result-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  color: var(--ink);
}
.result-card--primary .result-value,
.result-card--bitcoin .result-value,
.result-card--fire .result-value { color: var(--bg); }
.result-value--md { font-size: 1.5rem; }
.result-value--accent { color: var(--accent); }

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* Chart */
.chart-wrap { background: white; border: 1px solid var(--border); border-radius: 4px; padding: 1.25rem; }
.chart-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

/* BTC bar */
.btc-bar-wrap { background: white; border: 1px solid var(--border); border-radius: 4px; padding: 1.25rem; }
.btc-bar-label { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.75rem; }
.btc-bar { display: flex; height: 32px; border-radius: 2px; overflow: hidden; background: var(--border); }
.btc-bar__invested { background: var(--ink); transition: width 0.5s ease; }
.btc-bar__profit   { background: var(--accent); transition: width 0.5s ease; }
.btc-bar-legend { display: flex; gap: 1.5rem; margin-top: 0.75rem; }
.btc-bar-legend span { font-size: 0.75rem; color: var(--muted); display: flex; align-items: center; gap: 0.4rem; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot--ink    { background: var(--ink); }
.dot--accent { background: var(--accent); }
.btc-disclaimer { font-size: 0.72rem; color: var(--muted); padding: 0.75rem 1rem; background: #FFF8E8; border: 1px solid #EDE0C0; border-radius: 4px; }

/* FIRE Progress */
.fire-progress-wrap { background: white; border: 1px solid var(--border); border-radius: 4px; padding: 1.25rem; }
.fire-progress-label { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.75rem; }
.fire-progress-bar { height: 12px; background: var(--border); border-radius: 99px; overflow: hidden; }
.fire-progress-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width 0.5s ease; max-width: 100%; }
.fire-progress-markers { display: flex; justify-content: space-between; margin-top: 0.5rem; font-size: 0.72rem; color: var(--muted); }

/* FIRE types */
.fire-types { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.75rem; }
.fire-type { background: white; border: 1px solid var(--border); border-radius: 4px; padding: 1rem; text-align: center; }
.fire-type--active { border-color: var(--accent); background: #FEF5F2; }
.fire-type__name { font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.4rem; }
.fire-type__val { font-family: var(--font-display); font-size: 1.1rem; color: var(--ink); margin-bottom: 0.25rem; }
.fire-type--active .fire-type__val { color: var(--accent); }
.fire-type__desc { font-size: 0.65rem; color: var(--muted); }

/* Responsive */
@media (max-width: 768px) {
  .calc-layout { grid-template-columns: 1fr; }
  .fire-types { grid-template-columns: 1fr; }
}