/* reconstitution calculator styles
   extracted from css/styles.css and css/landing.css */

/* ============================================== */
/* from styles.css -- learn page calculator */
/* ============================================== */

.calculator-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 700px) {
    .calculator-layout {
        grid-template-columns: 1fr 1fr;
    }
}

.calculator-inputs label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.35rem;
    color: var(--color-text);
}

.calculator-inputs input,
.calculator-inputs select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    font-size: 0.9rem;
    font-family: var(--font-mono);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth);
    margin-bottom: var(--spacing-sm);
}

.calculator-inputs input:focus,
.calculator-inputs select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.calculator-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================== */
/* from landing.css -- standalone calculator page */
/* ============================================== */

.calc-page {
  min-height: 100vh;
  position: relative;
  z-index: var(--z-raised);
}

.calc-hero {
  text-align: center;
  padding: 140px 40px 40px;
  max-width: 640px;
  margin: 0 auto;
}

.calc-hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 16px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.calc-container {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
}

.calc-card {
  padding: 2rem;
}

.calc-field {
  margin-bottom: 1.25rem;
}

.calc-field:last-child {
  margin-bottom: 0;
}

.calc-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.calc-input-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.calc-input-group:focus-within {
  border-color: var(--accent);
}

.calc-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-family: Inter, -apple-system, sans-serif;
  outline: none;
  min-width: 0;
}

.calc-input::placeholder {
  color: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .calc-input::placeholder {
  color: rgba(0, 0, 0, 0.25);
}

.calc-unit {
  padding: 0 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  border-left: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  height: 100%;
  display: flex;
  align-items: center;
  min-height: 48px;
}

[data-theme="light"] .calc-unit {
  background: rgba(0, 0, 0, 0.03);
}

.calc-divider {
  height: 1px;
  background: var(--border);
  margin: 1.5rem 0;
}

.calc-result {
  margin-bottom: 1rem;
}

.calc-result:last-child {
  margin-bottom: 0;
}

.calc-result-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
}

.calc-result-value {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.calc-result-value.empty {
  color: var(--text-muted);
  opacity: 0.4;
}

/* syringe visualization */
.calc-syringe {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  border: 1px solid var(--border);
}

[data-theme="light"] .calc-syringe {
  background: rgba(0, 0, 0, 0.02);
}

.calc-syringe-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.syringe-barrel {
  width: 100%;
  height: 28px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 14px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
}

[data-theme="light"] .syringe-barrel {
  background: rgba(0, 0, 0, 0.04);
}

.syringe-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #a855f7);
  border-radius: 14px;
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  min-width: 0;
}

.syringe-ticks {
  display: flex;
  justify-content: space-between;
  padding: 0.3rem 0.1rem 0;
}

.syringe-tick {
  font-size: 0.65rem;
  color: var(--text-muted);
  opacity: 0.6;
}

/* preset buttons */
.calc-presets {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

.calc-preset {
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: Inter, -apple-system, sans-serif;
}

.calc-preset:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 768px) {
  .calc-hero {
    padding: 120px 24px 30px;
  }
}

@media (max-width: 480px) {
  .calc-hero .section-title {
    font-size: 1.6rem;
  }

  .calc-card {
    padding: 1.25rem;
  }

  .calc-result-value {
    font-size: 1.3rem;
  }
}