/* ==========================================================================
   DVMReady Veterinary Drug Calculator
   Multi-species drug dosing with protocol builder
   ========================================================================== */

.drug-calc-page {
  --dc-bg: #faf9f6;
  --dc-surface: #ffffff;
  --dc-line: #e5e5e5;
  --dc-accent: #0f766e;
  --dc-accent-soft: #e6f4f1;
  --dc-ink: #1a1a1a;
  --dc-muted: #666666;
  --dc-warn: #dc2626;
  --dc-warn-bg: #fef2f2;
  --dc-warn-border: #fecaca;
  --dc-caution-bg: #fffbeb;
  --dc-caution-border: #fde68a;
  --dc-success-bg: #f0fdf4;
  --dc-success-border: #bbf7d0;
  --dc-radius: 16px;
  --dc-radius-sm: 10px;
  --dc-shadow: 0 1px 3px rgba(0,0,0,0.08);
  --dc-shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
}

.drug-calc-page .page {
  padding-bottom: 48px;
}

/* Safety banner */
.dc-safety-banner {
  background: var(--dc-warn-bg);
  border: 1px solid var(--dc-warn-border);
  border-radius: var(--dc-radius);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.dc-safety-banner svg { flex-shrink: 0; margin-top: 2px; }
.dc-safety-title { font-size: 0.875rem; font-weight: 700; color: var(--dc-warn); margin-bottom: 4px; }
.dc-safety-text { font-size: 0.8rem; color: #991b1b; line-height: 1.5; }

/* Page header */
.dc-page-header { margin-bottom: 32px; }
.dc-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--dc-accent-soft); color: var(--dc-accent);
  padding: 4px 12px; border-radius: 100px;
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; margin-bottom: 12px;
}
.dc-page-title { font-size: 1.75rem; font-weight: 800; color: var(--dc-ink); margin-bottom: 8px; letter-spacing: -0.02em; }
.dc-page-subtitle { color: var(--dc-muted); font-size: 0.95rem; max-width: 600px; }

/* Two column layout */
.dc-two-column {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 380px);
  gap: 24px;
}

/* Patient bar */
.dc-patient-bar {
  background: var(--dc-surface); border-radius: var(--dc-radius);
  border: 1px solid var(--dc-line); padding: 20px; margin-bottom: 20px;
  box-shadow: var(--dc-shadow);
}
.dc-patient-title {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; color: var(--dc-accent); margin-bottom: 12px;
}
.dc-patient-inputs { display: flex; gap: 12px; flex-wrap: wrap; }
.dc-input-group { flex: 1; min-width: 140px; }
.dc-input-group label {
  display: block; font-size: 0.875rem; font-weight: 600;
  color: var(--dc-ink); margin-bottom: 6px;
}
.dc-input, .dc-select {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--dc-line);
  border-radius: 12px; font-size: 1rem; font-family: inherit;
  color: var(--dc-ink); background: white; outline: none;
}
.dc-input:focus, .dc-select:focus { border-color: var(--dc-accent); }

/* Search */
.dc-search-wrapper { position: relative; margin-bottom: 20px; }
.dc-search-bar {
  display: flex; align-items: center; background: var(--dc-surface);
  border: 1.5px solid var(--dc-line); border-radius: 12px;
  padding: 12px 16px; box-shadow: var(--dc-shadow);
}
.dc-search-input {
  flex: 1; border: none; outline: none; font-size: 1rem;
  font-family: inherit; color: var(--dc-ink); background: transparent;
}
.dc-search-clear {
  background: none; border: none; font-size: 1.25rem;
  color: #757575; cursor: pointer; padding: 0 4px;
}
.dc-search-dropdown {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0;
  background: var(--dc-surface); border: 1px solid var(--dc-line);
  border-radius: 12px; box-shadow: var(--dc-shadow-lg);
  z-index: 100; max-height: 400px; overflow: auto;
}
.dc-search-item {
  display: block; width: 100%; padding: 12px 16px;
  border: none; border-bottom: 1px solid #f0f0f0;
  background: var(--dc-surface); text-align: left;
  cursor: pointer; font-family: inherit;
}
.dc-search-item:hover { background: #f8fafc; }
.dc-search-item-name { font-weight: 600; font-size: 0.95rem; color: var(--dc-ink); margin-bottom: 4px; }
.dc-search-item-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.dc-category-tag {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; padding: 2px 8px; border-radius: 100px;
  background: var(--dc-accent-soft); color: var(--dc-accent);
}
.dc-route-text { font-size: 0.75rem; color: #757575; }
.dc-no-species-tag { font-size: 0.7rem; color: var(--dc-warn); font-weight: 500; }
.dc-no-results { padding: 20px; color: #757575; font-size: 0.9rem; text-align: center; }

/* Desktop drug browser */
.dc-desktop-browser {
  display: none;
}

@media (min-width: 1180px) {
  .dc-desktop-browser {
    display: grid;
    gap: 12px;
    margin-bottom: 20px;
    padding: 18px;
    border: 1px solid var(--dc-line);
    border-radius: var(--dc-radius);
    background: var(--dc-surface);
    box-shadow: var(--dc-shadow);
  }

  .dc-desktop-browser-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
  }

  .dc-desktop-browser-kicker {
    display: block;
    margin-bottom: 4px;
    color: var(--dc-accent);
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .dc-desktop-browser-head h2 {
    margin: 0;
    color: var(--dc-ink);
    font-size: 1rem;
    line-height: 1.25;
  }

  .dc-desktop-browser-count {
    flex: 0 0 auto;
    color: var(--dc-muted);
    font-size: 0.74rem;
    font-weight: 800;
    line-height: 1.3;
  }

  .dc-desktop-browser-cats {
    display: flex;
    gap: 7px;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-gutter: stable;
  }

  .dc-browser-cat {
    flex: 0 0 auto;
    min-height: 30px;
    padding: 7px 10px;
    border: 1px solid var(--dc-line);
    border-radius: 999px;
    background: #fff;
    color: var(--dc-muted);
    cursor: pointer;
    font: 800 0.72rem/1 'Manrope', sans-serif;
  }

  .dc-browser-cat:hover,
  .dc-browser-cat:focus-visible,
  .dc-browser-cat.active {
    color: var(--dc-accent);
    background: var(--dc-accent-soft);
    border-color: rgba(15, 118, 110, 0.26);
    outline: none;
  }

  .dc-desktop-browser-list {
    display: grid;
    gap: 6px;
    max-height: 360px;
    overflow: auto;
    padding-right: 2px;
  }

  .dc-browser-drug {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(110px, 0.42fr);
    gap: 12px;
    align-items: center;
    width: 100%;
    padding: 10px 11px;
    border: 1px solid transparent;
    border-radius: 10px;
    background: #fff;
    color: var(--dc-ink);
    cursor: pointer;
    font-family: inherit;
    text-align: left;
  }

  .dc-browser-drug:hover,
  .dc-browser-drug:focus-visible,
  .dc-browser-drug.active {
    background: var(--dc-accent-soft);
    border-color: rgba(15, 118, 110, 0.24);
    outline: none;
  }

  .dc-browser-drug.unavailable {
    opacity: 0.58;
  }

  .dc-browser-drug.contraindicated {
    background: #fff7ed;
  }

  .dc-browser-drug-main,
  .dc-browser-drug-dose {
    min-width: 0;
  }

  .dc-browser-drug-main strong {
    display: block;
    color: var(--dc-ink);
    font-size: 0.84rem;
    line-height: 1.25;
    overflow-wrap: anywhere;
  }

  .dc-browser-drug-main small {
    display: block;
    margin-top: 2px;
    color: var(--dc-muted);
    font-size: 0.68rem;
    line-height: 1.35;
    overflow-wrap: anywhere;
  }

  .dc-browser-drug-dose {
    justify-self: end;
    color: var(--dc-accent);
    font-size: 0.72rem;
    font-weight: 900;
    line-height: 1.25;
    text-align: right;
    overflow-wrap: anywhere;
  }

  .dc-browser-drug.contraindicated .dc-browser-drug-dose {
    color: var(--dc-warn);
  }

  .dc-browser-empty {
    margin: 0;
    padding: 12px;
    color: var(--dc-muted);
    font-size: 0.82rem;
  }
}

/* Drug card */
.dc-drug-card {
  background: var(--dc-surface); border-radius: var(--dc-radius);
  border: 1px solid var(--dc-line); padding: 28px;
  box-shadow: var(--dc-shadow);
}
.dc-drug-card-header { margin-bottom: 20px; }
.dc-drug-name { font-size: 1.25rem; font-weight: 700; color: var(--dc-ink); margin-bottom: 8px; }
.dc-drug-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.dc-generic-name { font-size: 0.8rem; color: #757575; font-style: italic; }

/* Dose range */
.dc-dose-range-box {
  background: #f8fafc; border-radius: var(--dc-radius-sm); padding: 16px; margin-bottom: 16px;
}
.dc-dose-range-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; color: var(--dc-accent); margin-bottom: 4px;
}
.dc-dose-range-value { font-size: 1.25rem; font-weight: 700; color: var(--dc-ink); }
.dc-frequency-text { font-size: 0.85rem; color: var(--dc-muted); margin-top: 4px; }

/* Warnings */
.dc-warnings-box {
  background: var(--dc-warn-bg); border: 1px solid var(--dc-warn-border);
  border-radius: var(--dc-radius-sm); padding: 12px; margin-bottom: 16px;
}
.dc-warning-item { font-size: 0.85rem; color: #991b1b; margin-bottom: 4px; }
.dc-warning-item:last-child { margin-bottom: 0; }

/* Notes */
.dc-notes-box {
  font-size: 0.85rem; color: var(--dc-muted); line-height: 1.6;
  margin-bottom: 20px; padding: 12px; background: #f8fafc;
  border-radius: var(--dc-radius-sm); border-left: 3px solid var(--dc-accent);
}

/* Sections */
.dc-section-title {
  font-size: 0.875rem; font-weight: 700; color: var(--dc-ink);
  margin-bottom: 12px; margin-top: 20px;
}

/* Concentration chips */
.dc-conc-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; margin-bottom: 12px;
}
.dc-conc-chip {
  padding: 12px; border: 1.5px solid var(--dc-line); border-radius: var(--dc-radius-sm);
  background: var(--dc-surface); cursor: pointer; text-align: center;
  font-family: inherit; transition: all 0.2s;
}
.dc-conc-chip:hover { border-color: var(--dc-accent); }
.dc-conc-chip.active {
  border-color: var(--dc-accent);
  background: #ecfdf5;
  color: #064e3b;
  box-shadow: 0 0 0 2px rgba(15, 118, 110, 0.14);
}
.dc-conc-chip.active .dc-conc-label,
.dc-conc-chip.active .dc-conc-value {
  color: #064e3b;
}
.dc-conc-label { font-size: 0.75rem; font-weight: 600; color: var(--dc-ink); margin-bottom: 4px; }
.dc-conc-value { font-size: 0.7rem; color: #757575; }

/* Custom conc row */
.dc-custom-conc-row { display: flex; gap: 8px; margin-bottom: 16px; }
.dc-hint { font-size: 0.75rem; color: #757575; margin-bottom: 16px; }

/* Calculate button */
.dc-calc-btn {
  width: 100%; padding: 14px; background: var(--dc-ink); color: white;
  border: none; border-radius: 12px; font-size: 1rem; font-weight: 700;
  font-family: inherit; cursor: pointer; display: flex;
  align-items: center; justify-content: center; gap: 8px; margin-top: 8px;
}
.dc-calc-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.dc-calc-btn:hover:not(:disabled) { background: #333; }

/* Results */
.dc-results-box {
  margin-top: 20px; padding: 20px; border-radius: var(--dc-radius-sm);
  border: 1px solid var(--dc-line);
  animation: dcFadeIn 0.4s ease;
}
.dc-results-box.warning { background: var(--dc-caution-bg); border-color: var(--dc-caution-border); }
.dc-results-box.danger { background: var(--dc-warn-bg); border-color: var(--dc-warn-border); }
.dc-results-box.success { background: var(--dc-success-bg); border-color: var(--dc-success-border); }

@keyframes dcFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.dc-results-box.is-live-updated {
  animation: dcLiveResultPulse 420ms ease-out;
}

@keyframes dcLiveResultPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(15, 118, 110, 0.22);
    transform: translateY(0);
  }
  42% {
    box-shadow: 0 0 0 8px rgba(15, 118, 110, 0.08);
    transform: translateY(-1px);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(15, 118, 110, 0);
    transform: translateY(0);
  }
}

.dc-result-main { margin-bottom: 16px; }
.dc-result-value { font-size: 2rem; font-weight: 800; color: var(--dc-ink); }
.dc-result-label { font-size: 0.875rem; color: var(--dc-muted); }
.dc-result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.dc-result-item { background: var(--dc-surface); border-radius: var(--dc-radius-sm); padding: 12px; border: 1px solid var(--dc-line); }
.dc-result-item-value { font-size: 1rem; font-weight: 700; color: var(--dc-ink); }
.dc-result-item-label { font-size: 0.7rem; color: #757575; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 4px; }

/* Math box */
.dc-math-box { background: var(--dc-accent-soft); border-radius: var(--dc-radius-sm); padding: 16px; margin-bottom: 16px; }
.dc-math-title { font-size: 0.75rem; font-weight: 700; color: var(--dc-accent); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px; }
.dc-math-step { font-size: 0.85rem; color: var(--dc-muted); line-height: 1.7; padding-left: 16px; position: relative; margin-bottom: 4px; }
.dc-math-step::before { content: '•'; position: absolute; left: 4px; color: var(--dc-accent); }

/* Add to protocol */
.dc-add-protocol-btn {
  width: 100%; padding: 12px; background: var(--dc-accent); color: white;
  border: none; border-radius: var(--dc-radius-sm); font-size: 0.9rem;
  font-weight: 700; font-family: inherit; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.dc-add-protocol-btn:hover { background: #7a6548; }

/* No data box */
.dc-no-data-box {
  background: #f8fafc; border-radius: var(--dc-radius); padding: 28px;
  text-align: center; border: 1px solid var(--dc-line);
}
.dc-no-data-title { font-size: 1.1rem; font-weight: 700; color: var(--dc-ink); margin-bottom: 8px; }
.dc-no-data-text { font-size: 0.9rem; color: var(--dc-muted); }

/* Protocol sidebar */
.dc-protocol-card {
  background: var(--dc-surface); border-radius: var(--dc-radius);
  border: 1px solid var(--dc-line); padding: 24px;
  box-shadow: var(--dc-shadow); position: sticky; top: 24px;
}
.dc-protocol-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid #f0f0f0;
}
.dc-protocol-title { font-size: 1.1rem; font-weight: 700; color: var(--dc-ink); margin: 0; display: flex; align-items: center; gap: 8px; }
.dc-protocol-count { background: var(--dc-accent); color: white; font-size: 0.75rem; font-weight: 700; padding: 2px 8px; border-radius: 100px; }
.dc-clear-protocol-btn { background: none; border: none; color: #757575; font-size: 0.8rem; cursor: pointer; font-family: inherit; }
.dc-clear-protocol-btn:hover { color: var(--dc-warn); }

.dc-empty-protocol { text-align: center; padding: 32px 16px; color: #a0a0a0; }
.dc-empty-protocol-text { font-size: 0.9rem; font-weight: 600; color: #757575; margin-top: 12px; }
.dc-empty-protocol-sub { font-size: 0.8rem; color: #a0a0a0; margin-top: 4px; }

.dc-protocol-list { max-height: 500px; overflow: auto; }
.dc-protocol-item { padding: 12px 0; border-bottom: 1px solid #f0f0f0; }
.dc-protocol-item-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; }
.dc-protocol-drug-name { font-weight: 700; font-size: 0.9rem; color: var(--dc-ink); }
.dc-protocol-drug-meta { font-size: 0.75rem; color: #757575; margin-top: 2px; }
.dc-remove-btn { background: none; border: none; color: #a0a0a0; font-size: 1.25rem; cursor: pointer; padding: 0 4px; line-height: 1; }
.dc-remove-btn:hover { color: var(--dc-warn); }
.dc-protocol-dose-row { display: flex; gap: 12px; align-items: baseline; }
.dc-protocol-dose { font-size: 1.1rem; font-weight: 800; color: var(--dc-accent); }
.dc-protocol-volume { font-size: 0.85rem; color: var(--dc-muted); }
.dc-protocol-freq { font-size: 0.8rem; color: #757575; margin-top: 4px; }
.dc-protocol-warnings { margin-top: 8px; }
.dc-protocol-warning { font-size: 0.75rem; color: var(--dc-warn); margin-bottom: 2px; }

.dc-protocol-actions { margin-top: 16px; padding-top: 16px; border-top: 1px solid #f0f0f0; }
.dc-print-btn {
  width: 100%; padding: 12px; background: var(--dc-ink); color: white;
  border: none; border-radius: var(--dc-radius-sm); font-size: 0.9rem;
  font-weight: 700; font-family: inherit; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.dc-print-btn:hover { background: #333; }

/* References card */
.dc-references-card {
  background: var(--dc-surface); border-radius: var(--dc-radius);
  border: 1px solid var(--dc-line); padding: 20px; margin-top: 20px;
}
.dc-references-title { font-size: 0.875rem; font-weight: 700; color: var(--dc-ink); margin-bottom: 12px; }
.dc-reference-item { font-size: 0.8rem; color: #757575; margin-bottom: 6px; }

/* Focus states */
.dc-input:focus-visible,
.dc-select:focus-visible,
.dc-conc-chip:focus-visible,
.dc-search-item:focus-visible,
.dc-add-protocol-btn:focus-visible,
.dc-remove-btn:focus-visible,
.dc-print-btn:focus-visible,
.dc-calc-btn:focus-visible,
.dc-search-clear:focus-visible,
.dc-clear-protocol-btn:focus-visible {
  outline: 2px solid var(--dc-accent);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .site-header,
  .dc-search-box,
  .dc-conc-grid,
  .dc-custom-conc-row,
  .dc-section-title,
  .dc-dose-override,
  .dc-hint,
  .dc-protocol-actions,
  .dc-references-card,
  .cta-section,
  .footer-grid,
  .footer-bottom,
  .menu-toggle { display: none !important; }
  .dc-two-column { grid-template-columns: 1fr; }
  .dc-protocol-card { position: static; border: 1px solid #ccc; }
  .dc-drug-card { break-inside: avoid; }
  body { background: #fff; }
}

/* Responsive */
@media (max-width: 900px) {
  .dc-two-column { grid-template-columns: 1fr; }
  .dc-protocol-card { position: static; }
}
@media (max-width: 600px) {
  .dc-result-grid { grid-template-columns: 1fr; }
  .dc-conc-grid { grid-template-columns: repeat(2, 1fr); }
  .dc-patient-inputs { flex-direction: column; }

  /* iOS input zoom prevention: ensure form controls are ≥16px on mobile */
  .dc-input,
  .dc-select,
  .dc-search-input {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .dc-results-box,
  .dc-results-box.is-live-updated {
    animation: none !important;
    transform: none !important;
  }
}