/* TechTools — BMI & Health Calculator styles */

/* ---- Tabs ---- */
.bmi-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-radius: var(--radius-btn);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  width: fit-content;
  flex-wrap: wrap;
}
.bmi-tab {
  padding: 10px 22px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  white-space: nowrap;
}
.bmi-tab:not(:last-child) {
  border-right: 1px solid rgba(255,255,255,0.06);
}
.bmi-tab.active {
  background: rgba(16,185,129,0.15);
  color: var(--cat-life);
  text-shadow: 0 0 16px rgba(16,185,129,0.35);
}
.bmi-tab:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}

/* ---- Tab Panels ---- */
.bmi-tab-panel { display: none; }
.bmi-tab-panel.active { display: block; }

/* ---- Config Panel ---- */
.bmi-config {
  margin-bottom: 24px;
}
.bmi-input-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: flex-end;
}

/* ---- Gender Toggle ---- */
.gender-toggle {
  display: flex;
  border-radius: 10px;
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.1);
  overflow: hidden;
}
.gender-btn {
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  white-space: nowrap;
}
.gender-btn:not(:last-child) {
  border-right: 1px solid rgba(255,255,255,0.08);
}
.gender-btn.active {
  background: rgba(16,185,129,0.18);
  color: var(--cat-life);
  text-shadow: 0 0 12px rgba(16,185,129,0.3);
}
.gender-btn:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}

/* ---- Shared Input Styles ---- */
.bmi-config .param-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.bmi-config .param-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.bmi-config .param-unit {
  font-weight: 400;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0;
}
.bmi-config .param-input-wrap {
  display: flex;
  align-items: stretch;
  position: relative;
}
.bmi-config .param-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary);
  font-size: 18px;
  font-family: var(--font-hero);
  font-weight: 600;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  padding-right: 52px;
  -moz-appearance: textfield;
}
.bmi-config .param-input::-webkit-outer-spin-button,
.bmi-config .param-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.bmi-config .param-input:focus {
  border-color: rgba(16,185,129,0.5);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.08);
}
.bmi-config .param-input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}
.bmi-config .param-suffix {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--text-muted);
  pointer-events: none;
  font-weight: 500;
}

/* ---- Select ---- */
.bmi-select {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  background: rgba(0,0,0,0.35);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary);
  font-size: 15px;
  font-family: var(--font-hero);
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}
.bmi-select:focus {
  border-color: rgba(16,185,129,0.5);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.08);
}
.bmi-select option {
  background: #111;
  color: #fff;
}

/* ---- Result Panel ---- */
.bmi-result {
  min-height: 160px;
}
#bmiResultContent,
#bmrResultContent,
#bfResultContent,
#exResultContent { display: none; }
#bmiResultContent.visible,
#bmrResultContent.visible,
#bfResultContent.visible,
#exResultContent.visible { display: block; }
#bmiEmptyState.hidden,
#bmrEmptyState.hidden,
#bfEmptyState.hidden,
#exEmptyState.hidden { display: none; }

/* ---- BMI Main Result ---- */
.bmi-main-result {
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.bmi-value-section,
.bf-value-section,
.ex-value-section {
  flex: 0 0 auto;
  text-align: center;
  padding: 24px 36px;
  background: rgba(16,185,129,0.06);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: 20px;
  min-width: 160px;
}
.bmi-number,
.bf-number {
  font-family: var(--font-hero);
  font-size: 56px;
  font-weight: 700;
  color: var(--cat-life);
  text-shadow: 0 0 32px rgba(16,185,129,0.4);
  line-height: 1.1;
}
.ex-number {
  font-family: var(--font-hero);
  font-size: 48px;
  font-weight: 700;
  color: var(--accent-amber);
  text-shadow: 0 0 32px rgba(255,180,84,0.4);
  line-height: 1.1;
}
.bmi-category,
.bf-category {
  font-family: var(--font-hero);
  font-size: 18px;
  font-weight: 600;
  color: var(--cat-life);
  margin-top: 8px;
  text-shadow: 0 0 12px rgba(16,185,129,0.3);
}
.ex-category {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-amber);
  margin-top: 6px;
}

/* ---- Info Cards ---- */
.bmi-info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  flex: 1;
  min-width: 280px;
}
.bmi-info-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: 16px;
  text-align: center;
}
.bmi-info-card.highlight {
  border-color: rgba(16,185,129,0.25);
  background: rgba(16,185,129,0.06);
}
.bmi-info-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.bmi-info-value {
  font-family: var(--font-hero);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}
.bmi-info-card.highlight .bmi-info-value {
  color: var(--cat-life);
  text-shadow: 0 0 16px rgba(16,185,129,0.3);
}

/* ---- BMI Scale Bar ---- */
.bmi-scale-section {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 24px;
}
.bmi-scale { position: relative; }
.bmi-scale-bar {
  position: relative;
  height: 24px;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  margin-bottom: 8px;
  background: rgba(0,0,0,0.3);
}
.bmi-scale-segment {
  height: 100%;
  transition: opacity 0.3s ease;
}
.bmi-scale-segment.seg-underweight { flex: 18.5; background: var(--accent-sky); opacity: 0.7; }
.bmi-scale-segment.seg-normal       { flex: 5.5;  background: var(--cat-life); opacity: 0.8; }
.bmi-scale-segment.seg-overweight   { flex: 4;    background: var(--accent-amber); opacity: 0.8; }
.bmi-scale-segment.seg-obese        { flex: 4;    background: var(--accent-rose); opacity: 0.7; }
.bmi-scale-segment.seg-severe       { flex: 10;   background: var(--accent-magenta); opacity: 0.6; }

.bmi-scale-marker {
  position: absolute;
  top: -4px;
  width: 4px;
  height: 32px;
  background: var(--text-primary);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(255,255,255,0.6), 0 0 24px rgba(255,255,255,0.3);
  transition: left 0.5s cubic-bezier(0.175,0.885,0.32,1.275);
  z-index: 2;
}
.bmi-scale-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 2px;
}
.bmi-scale-ranges {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
}

/* ---- BMR Cards ---- */
.bmr-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.bmr-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  padding: 24px;
  text-align: center;
}
.bmr-card.highlight {
  border-color: rgba(16,185,129,0.3);
  background: rgba(16,185,129,0.06);
}
.bmr-card.highlight-secondary {
  border-color: rgba(19,221,196,0.2);
  background: rgba(19,221,196,0.04);
}
.bmr-card-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.bmr-card-value {
  font-family: var(--font-hero);
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
}
.bmr-card.highlight .bmr-card-value {
  color: var(--cat-life);
  text-shadow: 0 0 28px rgba(16,185,129,0.35);
}
.bmr-card.highlight-secondary .bmr-card-value {
  color: var(--accent-teal);
  text-shadow: 0 0 20px rgba(19,221,196,0.25);
}
.bmr-card-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ---- TDEE Explanation ---- */
.tdee-explanation {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 24px;
}
.tdee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}
.tdee-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 18px 16px;
  text-align: center;
}
.tdee-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-bottom: 8px;
}
.tdee-item-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}
.tdee-item-value {
  font-family: var(--font-hero);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}
.tdee-item-pct {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---- Body Fat Result ---- */
.bf-main-result {
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.bf-value-section {
  min-width: 140px;
}
.bf-scale-section {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 24px;
}
.bf-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 12px;
}
.bf-cat-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 14px 12px;
  text-align: center;
  transition: all 0.3s ease;
}
.bf-cat-card.active {
  border-color: rgba(16,185,129,0.4);
  background: rgba(16,185,129,0.1);
  box-shadow: 0 0 20px rgba(16,185,129,0.15);
}
.bf-cat-card-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}
.bf-cat-card.active .bf-cat-card-label {
  color: var(--cat-life);
}
.bf-cat-card-range {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}
.bf-cat-card.active .bf-cat-card-range {
  color: var(--cat-life);
}

/* ---- Exercise Result ---- */
.ex-main-result {
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.ex-comparison {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 16px;
  padding: 24px;
}
.ex-food-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.ex-food-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 14px;
  text-align: center;
  transition: all 0.3s ease;
}
.ex-food-icon {
  font-size: 28px;
  margin-bottom: 6px;
}
.ex-food-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.ex-food-cal {
  font-size: 12px;
  color: var(--text-muted);
}
.ex-food-eq {
  font-family: var(--font-hero);
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-amber);
  text-shadow: 0 0 12px rgba(255,180,84,0.2);
}

/* ---- Section Title ---- */
.section-title {
  font-family: var(--font-hero);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .bmi-tabs { width: 100%; }
  .bmi-tab { flex: 1 1 auto; text-align: center; padding: 10px 12px; font-size: 13px; }
  .bmi-input-row { flex-direction: column; gap: 12px; }
  .bmi-main-result,
  .bf-main-result,
  .ex-main-result { flex-direction: column; gap: 20px; }
  .bmi-value-section,
  .bf-value-section,
  .ex-value-section { width: 100%; padding: 20px; }
  .bmi-number,
  .bf-number { font-size: 44px; }
  .ex-number { font-size: 38px; }
  .bmi-info-cards { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
  .bmr-cards { grid-template-columns: 1fr; }
  .bmr-card-value { font-size: 28px; }
  .bf-categories-grid { grid-template-columns: 1fr 1fr; }
  .bmi-scale-labels { font-size: 10px; }
  .section-title { font-size: 14px; }
  .bmi-scale-section,
  .bf-scale-section,
  .tdee-explanation,
  .ex-comparison { padding: 16px; }
}
@media (max-width: 480px) {
  .bmi-tab { font-size: 12px; padding: 8px 10px; }
  .bmi-number,
  .bf-number { font-size: 36px; }
  .ex-number { font-size: 30px; }
  .bf-categories-grid { grid-template-columns: 1fr; }
  .ex-food-grid { grid-template-columns: 1fr 1fr; }
  .tdee-grid { grid-template-columns: 1fr; }
  .bmi-category,
  .bf-category { font-size: 16px; }
}