/* ==========================================================================
   FITNESS TOOLS — BMI & CALORIE/MACRO CALCULATORS
   Scoped stylesheet, loaded only on tool pages. Reuses tokens from main.css
   (must be loaded first). No new brand colors except a small, deliberately
   scoped "status" set used only for BMI category indicators, where relying
   on blue alone would make four health categories indistinguishable.
   ========================================================================== */

:root {
  --status-info: #3FBDB0;    /* underweight — stays in the blue family */
  --status-good: #3FBDB0; /* normal — lightened from --accent (#2AA79B) specifically for this label's contrast requirement; #2AA79B measured 3.97:1 against its own tinted pill background here, below the 4.5:1 AA minimum for this text size/weight. Kept as its own value rather than changing --accent, which is correctly verified elsewhere at full brightness. */
  --status-caution: #2AA79B; /* overweight */
  --status-alert: #F87171;   /* obese — same red already used for form errors */
}

.tool-hero {
  padding: calc(var(--nav-h) + 56px) 24px 64px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.tool-hero__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 24px;
  transition: color var(--dur-fast) var(--ease);
}
.tool-hero__back:hover { color: var(--accent); }
.tool-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  letter-spacing: 0.01em;
  line-height: 1.05;
}
.tool-hero p {
  margin-top: 18px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

.calc-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px 140px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

.calc-card {
  padding: 36px;
  border-radius: var(--radius);
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

/* Unit + goal segmented toggles, shared pattern */
.calc-segment {
  display: inline-flex;
  flex-wrap: wrap;
  padding: 4px;
  border-radius: 999px;
  background: var(--glass-ultra-subtle-fill);
  border: 1px solid var(--glass-border);
  margin-bottom: 28px;
}
.calc-segment button {
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.calc-segment button[aria-pressed="true"] {
  background: var(--accent-solid);
  color: #fff;
}

.calc-form { display: flex; flex-direction: column; gap: 20px; }
.calc-form .field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Reuses .field from main.css for text inputs (floating labels).
   Extends it here for select + radio-pill variants. */
.field select {
  width: 100%;
  background: var(--glass-ultra-subtle-fill);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 20px 16px 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  transition: border-color var(--dur-fast) var(--ease);
}
.field select:focus { border-color: var(--accent); outline: none; }
.field.field--select label {
  top: 7px;
  font-size: 0.7rem;
  color: var(--text-tertiary);
  position: absolute;
  left: 16px;
}

.field-error {
  display: none;
  color: var(--status-alert);
  font-size: 0.78rem;
  margin-top: 6px;
}
.field.has-error input,
.field.has-error select { border-color: var(--status-alert); }
.field.has-error .field-error { display: block; }
.calc-radio-group.has-error .calc-radio-group__options span { border-color: var(--status-alert); }
.calc-radio-group.has-error .field-error { display: block; }

fieldset.calc-radio-group {
  border: none;
  padding: 0;
}
fieldset.calc-radio-group legend {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-bottom: 10px;
  padding: 0;
}
.calc-radio-group__options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.calc-radio-group__options label {
  position: relative;
}
.calc-radio-group__options input {
  position: absolute;
  opacity: 0;
  width: 1px; height: 1px;
}
.calc-radio-group__options span {
  display: inline-flex;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--glass-ultra-subtle-fill);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.calc-radio-group__options input:checked + span {
  background: var(--accent-soft);
  border-color: rgba(42, 167, 155, 0.5);
  color: var(--accent);
}
.calc-radio-group__options input:focus-visible + span {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.calc-submit { margin-top: 6px; }

/* ==========================================================================
   RESULTS PANEL
   ========================================================================== */
.calc-results {
  padding: 36px;
  border-radius: var(--radius);
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  min-height: 100%;
}
.calc-results__empty {
  color: var(--text-tertiary);
  font-size: 0.95rem;
  text-align: center;
  padding: 60px 20px;
  line-height: 1.7;
}
.calc-results__body { display: none; }
.calc-results.has-result .calc-results__empty { display: none; }
.calc-results.has-result .calc-results__body {
  display: block;
  animation: fade-up 0.6s var(--ease) forwards;
}

/* BMI-specific */
.bmi-headline { text-align: center; margin-bottom: 28px; }
.bmi-headline__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.2rem, 7vw, 4.2rem);
  line-height: 1;
}
.bmi-headline__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}
.bmi-headline__label .dot { width: 8px; height: 8px; border-radius: 50%; }

.bmi-scale { margin: 28px 0; }
.bmi-scale__track {
  position: relative;
  height: 10px;
  border-radius: 999px;
  overflow: visible;
  display: flex;
}
.bmi-scale__seg { flex: 1; border-radius: 2px; margin-right: 2px; }
.bmi-scale__seg:last-child { margin-right: 0; }
.bmi-scale__marker {
  position: absolute;
  top: -6px;
  width: 3px; height: 22px;
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 0 10px rgba(255,255,255,0.6);
  transform: translateX(-50%);
  transition: left 0.8s var(--ease);
}
.bmi-scale__legend {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 0.68rem;
  color: var(--text-tertiary);
}

.calc-recommend {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
}
.calc-recommend a { color: var(--accent); font-weight: 700; }

/* Calorie/macro specific */
.calorie-headline { text-align: center; margin-bottom: 24px; }
.calorie-headline__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 6.5vw, 3.8rem);
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
}
.calorie-headline__unit { font-size: 1rem; color: var(--text-tertiary); margin-left: 4px; }
.calorie-headline__sub { color: var(--text-tertiary); font-size: 0.85rem; margin-top: 6px; }

.macro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}
.macro-chip {
  text-align: center;
  padding: 18px 10px;
  border-radius: var(--radius-sm);
  background: var(--glass-ultra-subtle-fill);
  border: 1px solid var(--glass-border);
}
.macro-chip__val { font-family: var(--font-display);
  font-weight: 700; font-size: 1.6rem; color: var(--text-primary); }
.macro-chip__label { font-size: 0.72rem; color: var(--text-tertiary); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.04em; }

.water-note {
  margin-top: 20px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid rgba(42, 167, 155, 0.25);
  font-size: 0.85rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.calc-share {
  display: flex;
  gap: 10px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.calc-share button, .calc-share a { flex: 1; min-width: 140px; }
.calc-share__status { margin-top: 10px; font-size: 0.82rem; color: var(--accent); min-height: 1.2em; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 900px) {
  .calc-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .calc-card, .calc-results { padding: 26px 22px; }
  .calc-form .field-row { grid-template-columns: 1fr; }
  .tool-hero { padding: calc(var(--nav-h) + 36px) 20px 48px; }
  .macro-grid { gap: 8px; }
}

/* ==========================================================================
   PRINT — clean, shareable results printout
   ========================================================================== */
@media print {
  .nav, .site-footer, .tool-hero__back, .calc-card,
  .skip-link, .calc-share { display: none !important; }
  body { background: #fff; color: #111; }
  .calc-wrap { display: block; padding: 0; max-width: 100%; }
  .calc-results {
    background: #fff;
    border: 1px solid #ddd;
    box-shadow: none;
    color: #111;
  }
  .calorie-headline__num, .bmi-headline__num { color: #111; text-shadow: none; }
  .macro-chip { background: #f5f5f5; border-color: #ddd; }
  .macro-chip__val { color: #111; }
}

/* ==========================================================================
   SAVED RESULTS BANNER (Calorie calculator — localStorage restore prompt)
   ========================================================================== */
.calc-saved-banner {
  max-width: 980px;
  margin: 0 auto 28px;
  padding: 16px 22px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid rgba(42, 167, 155, 0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.calc-saved-banner[hidden] { display: none; }
.calc-saved-banner p { font-size: 0.88rem; color: var(--text-primary); margin: 0; }
.calc-saved-banner__actions { display: flex; align-items: center; gap: 14px; }
.calc-saved-banner__actions .btn { padding: 9px 18px; font-size: 0.82rem; }
.calc-saved-banner__clear {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  text-decoration: underline;
  transition: color var(--dur-fast) var(--ease);
}
.calc-saved-banner__clear:hover { color: var(--text-secondary); }

@media (max-width: 560px) {
  .calc-saved-banner { padding: 14px 18px; margin-left: 20px; margin-right: 20px; }
}