/* ============================================================
   lab.css — Stylesheet for the Virtual QC Lab Assistant Dashboard
   Inherits core global styles and builds custom lab tools.
   ============================================================ */

@import url('/css/tokens.css');
@import url('/css/base.css');
@import url('/css/nav.css');
@import url('/css/bursts.css');
@import url('/css/footer.css');

/* ── LAYOUT & CONTAINER ── */
.lab-container {
  width: 100%;
  max-width: 1200px;
  box-sizing: border-box;
  margin: calc(var(--nav-height) + 40px) auto 60px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 30px;
  position: relative;
  z-index: 10;
}

/* ── SIDEBAR: MEET THE ANALYST ── */
.lab-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background-color: var(--cream);
  border: var(--border-thin);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-pop);
}

.sidebar-badge {
  display: inline-block;
  background-color: var(--pink);
  color: var(--white);
  font-family: var(--font-comic);
  font-size: 1rem;
  padding: 4px 10px;
  border: var(--border-thin);
  transform: rotate(-1.5deg);
  margin-bottom: 12px;
  box-shadow: 2px 2px 0 var(--ink);
  letter-spacing: 0.5px;
}

.sidebar-title {
  font-family: var(--font-comic);
  font-size: 1.9rem;
  color: var(--ink);
  margin-bottom: 2px;
  letter-spacing: 1px;
}

.sidebar-role {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: bold;
  color: var(--purple);
  margin-bottom: 12px;
  display: block;
}

.sidebar-bio {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: #444444;
  line-height: 1.4;
  margin-bottom: 10px;
}

.sidebar-subheading {
  font-family: var(--font-comic);
  font-size: 1.25rem;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

.checklist-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: #666666;
  margin-bottom: 14px;
}

/* GLP Audit Checklist UI */
.glp-checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
  list-style: none;
}

.chk-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: bold;
  cursor: pointer;
  user-select: none;
}

.glp-chk {
  width: 18px;
  height: 18px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  cursor: pointer;
  accent-color: var(--pink);
  margin-top: 1px;
  flex-shrink: 0;
}

.chk-label span {
  color: var(--ink);
  transition: opacity 0.2s;
}

.glp-chk:checked + span {
  opacity: 0.65;
  text-decoration: line-through;
}

/* ── MAIN WORKBENCH & TAB SYSTEM ── */
.lab-workbench {
  display: flex;
  flex-direction: column;
  gap: 30px;
  min-width: 0;
}

/* Tab selector ribbon */
.tab-ribbon {
  display: flex;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background-color: var(--ink);
  border-radius: var(--radius);
  border: var(--border-thin);
  padding: 6px;
  gap: 6px;
  box-shadow: var(--shadow-pop);
  min-width: 0;
}

.tab-btn {
  flex-grow: 1;
  flex-shrink: 0;
  white-space: nowrap;
  background: none;
  border: none;
  border-radius: calc(var(--radius) - 4px);
  color: var(--cream);
  font-family: var(--font-comic);
  font-size: 1.2rem;
  padding: 12px 16px;
  cursor: pointer;
  outline: none;
  letter-spacing: 1px;
  transition: background-color 0.2s, color 0.2s;
}

.tab-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--yellow);
}

.tab-btn.active {
  background-color: var(--yellow);
  color: var(--ink);
  box-shadow: 2px 2px 0 rgba(0,0,0,0.15);
}

/* Workbench Panes */
.workbench-pane {
  display: none;
  min-width: 0;
}

.workbench-pane.active {
  display: block;
  animation: panePop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.15) forwards;
}

@keyframes panePop {
  0% {
    opacity: 0;
    transform: scale(0.98) translateY(10px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.pane-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 30px;
  align-items: stretch;
  min-width: 0;
}

.pane-inputs,
.pane-visuals {
  min-width: 0;
}

.lab-card {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background-color: var(--cream);
  border: var(--border-thick);
  border-radius: var(--radius);
  padding: 30px 24px;
  box-shadow: var(--shadow-pop);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
  height: 100%;
}

.card-tag {
  position: absolute;
  top: -15px;
  left: 20px;
  font-family: var(--font-comic);
  font-size: 0.95rem;
  padding: 4px 12px;
  border: var(--border-thin);
  letter-spacing: 0.5px;
  box-shadow: 2px 2px 0 var(--ink);
}

.tag-yellow {
  background-color: var(--yellow);
  color: var(--ink);
}

.tag-pink {
  background-color: var(--pink);
  color: var(--white);
}

/* Slider Customization */
.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-badge {
  font-family: var(--font-comic);
  font-size: 1.1rem;
  background-color: var(--ink);
  color: var(--white);
  padding: 2px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.lab-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #ddd;
  border: 2px solid var(--ink);
  outline: none;
  cursor: pointer;
  margin: 10px 0;
}

/* Track styling */
.lab-slider::-webkit-slider-runnable-track {
  width: 100%;
  height: 8px;
  cursor: pointer;
  background: #ddd;
  border-radius: 4px;
}

/* Webkit Thumb styling */
.lab-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  height: 22px;
  width: 22px;
  border-radius: 50%;
  background: var(--pink);
  border: 2px solid var(--ink);
  margin-top: -9px;
  box-shadow: 1.5px 1.5px 0 var(--ink);
  transition: transform 0.1s;
}

.lab-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15) rotate(5deg);
}

/* Firefox Thumb styling */
.lab-slider::-moz-range-thumb {
  height: 18px;
  width: 18px;
  border-radius: 50%;
  background: var(--pink);
  border: 2px solid var(--ink);
  box-shadow: 1.5px 1.5px 0 var(--ink);
  cursor: pointer;
}

.slider-ticks {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: bold;
  color: #666;
}

/* Select Form Styles */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-family: var(--font-comic);
  font-size: 1.1rem;
  color: var(--ink);
  letter-spacing: 0.5px;
}

.custom-select-wrapper {
  position: relative;
  width: 100%;
}

.form-select {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: bold;
  color: var(--ink);
  background-color: var(--white);
  border: var(--border-thin);
  border-radius: var(--radius);
  outline: none;
  cursor: pointer;
  appearance: none;
}

.custom-select-wrapper::after {
  content: '▼';
  font-size: 0.75rem;
  color: var(--ink);
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

/* ── MIXER VISUALS (Beaker & Charts) ── */
.visualizer-card {
  display: flex;
  flex-direction: column;
}

.visualizer-content {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  flex-grow: 1;
  align-items: center;
}

/* Beaker Container & Liquid Animations */
.beaker-container {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  height: 250px;
}

.lab-beaker {
  width: 130px;
  height: 200px;
  background-color: rgba(255, 255, 255, 0.45);
  border: 4px solid var(--ink);
  border-top: none;
  border-radius: 0 0 16px 16px;
  position: relative;
  box-shadow: inset 4px -4px 0 rgba(255,255,255,0.6);
}

/* Lip of beaker */
.lab-beaker::before {
  content: '';
  position: absolute;
  top: -4px;
  left: -8px;
  right: -8px;
  height: 4px;
  background-color: var(--ink);
  border-radius: 4px;
}

/* Liquid level inside beaker */
.beaker-liquid {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 25%; /* controlled dynamically by JS volume */
  background-color: var(--blue);
  border-radius: 0 0 12px 12px;
  transition: height 0.4s ease, background-color 0.4s;
  overflow: hidden;
  box-shadow: inset 2px -2px 0 rgba(0,0,0,0.1);
}

/* Wave overlay inside liquid */
.beaker-liquid-wave {
  position: absolute;
  width: 200%;
  height: 200%;
  top: -190%;
  left: -50%;
  background-color: rgba(255, 255, 255, 0.25);
  border-radius: 35%;
  animation: waveRotate 5s linear infinite;
}

@keyframes waveRotate {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Gradations on beaker */
.beaker-gradations {
  position: absolute;
  top: 15px;
  bottom: 15px;
  left: 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 700;
  color: rgba(0, 0, 0, 0.45);
  pointer-events: none;
  line-height: 1;
}

.beaker-gradations span {
  position: relative;
  padding-left: 12px;
}

.beaker-gradations span::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 2px;
  background-color: rgba(0, 0, 0, 0.4);
}

/* Calculation Board Panel */
.calculation-board {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-main-title {
  font-family: var(--font-comic);
  font-size: 1.4rem;
  color: var(--ink);
  letter-spacing: 0.5px;
  border-bottom: 2px dashed rgba(0, 0, 0, 0.15);
  padding-bottom: 4px;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: bold;
}

.calc-label {
  color: #555;
}

.calc-val {
  color: var(--ink);
}

.calc-result-row {
  margin-top: 6px;
  padding: 8px 12px;
  background-color: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 2px 2px 0 var(--ink);
}

.calc-result-row .calc-label {
  font-family: var(--font-comic);
  font-size: 1.1rem;
  color: var(--ink);
  letter-spacing: 0.5px;
}

.calc-result-val {
  font-family: var(--font-comic);
  font-size: 1.4rem;
  color: var(--pink);
}

/* Comic Speech Instruction bubble */
.calc-speech-bubble {
  background-color: var(--yellow);
  border: var(--border-thin);
  border-radius: 16px;
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  line-height: 1.3;
  margin-top: 10px;
  position: relative;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.calc-speech-bubble strong {
  color: var(--pink);
}

/* ── SERIAL DILUTION TEST TUBES (Pane 2) ── */
.dilution-visualizer-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  justify-content: center;
  flex-grow: 1;
}

/* Test tube rack UI */
.test-tube-rack {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background-color: rgba(0, 0, 0, 0.04);
  border: 4px solid var(--ink);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 30px 20px 20px 20px;
  width: 100%;
  max-width: 440px;
  box-shadow: inset 4px -4px 0 rgba(255,255,255,0.7);
  position: relative;
}

.test-tube-rack::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 10px;
  right: 10px;
  height: 4px;
  background-color: var(--ink);
  border-radius: 4px;
}

.test-tube-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.test-tube {
  width: 32px;
  height: 140px;
  background-color: rgba(255, 255, 255, 0.65);
  border: 3px solid var(--ink);
  border-radius: 0 0 16px 16px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 2px -2px 0 rgba(255,255,255,0.7);
}

.tube-liquid {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0%; /* updated in cascade animation */
  background-color: var(--blue);
  border-radius: 0 0 12px 12px;
  transition: height 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.25), background-color 0.4s;
  box-shadow: inset 1px -1px 0 rgba(0,0,0,0.1);
}

.tube-label {
  font-family: var(--font-comic);
  font-size: 0.75rem;
  color: #666;
  letter-spacing: 0.5px;
}

.tube-concentration {
  font-family: var(--font-comic);
  font-size: 0.95rem;
  color: var(--ink);
  letter-spacing: 0.5px;
  background-color: var(--white);
  padding: 1px 6px;
  border: 2px solid var(--ink);
  border-radius: 12px;
  box-shadow: 1.5px 1.5px 0 var(--ink);
  min-width: 60px;
  text-align: center;
}

/* Dilution button */
.btn-dilute {
  background-color: var(--pink);
  border: var(--border-thick);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-comic);
  font-size: 1.25rem;
  padding: 12px 16px;
  cursor: pointer;
  letter-spacing: 1px;
  box-shadow: var(--shadow-pop);
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.25), box-shadow 0.2s;
  outline: none;
  width: 100%;
  white-space: normal;
}

.btn-dilute:hover {
  transform: translateY(-4px);
  box-shadow: 7px 7px 0 var(--ink);
}

.btn-dilute:active {
  transform: translateY(-1.5px);
  box-shadow: var(--shadow-hover);
}

/* ── PRINT COMPLIANCE REPORT COMPONENT ── */
.glp-record-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  margin-top: 10px;
}

.btn-generate-record {
  background-color: var(--yellow);
  border: var(--border-thick);
  border-radius: var(--radius);
  color: var(--ink);
  font-family: var(--font-comic);
  font-size: 1.35rem;
  padding: 14px 28px;
  cursor: pointer;
  letter-spacing: 1.5px;
  box-shadow: var(--shadow-pop);
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.25), box-shadow 0.2s;
  outline: none;
  width: 100%;
  max-width: 600px;
  text-align: center;
  white-space: normal;
}

.btn-generate-record:hover {
  transform: translateY(-4px);
  box-shadow: 7px 7px 0 var(--ink);
}

.btn-generate-record:active {
  transform: translateY(-1.5px);
  box-shadow: var(--shadow-hover);
}

/* Clean Official Sheet Styles (Printed sheet layout) */
.glp-report-sheet {
  display: none; /* hidden until generated */
  background-color: var(--white);
  border: 3px solid #000;
  border-radius: 4px;
  padding: 40px;
  width: 100%;
  max-width: 750px;
  box-shadow: 5px 5px 0px rgba(0, 0, 0, 0.15);
  font-family: Arial, sans-serif; /* Clean, formal look */
  color: #000;
  margin-top: 10px;
}

.glp-report-sheet.active {
  display: block;
  animation: panePop 0.4s ease forwards;
}

.report-header {
  display: flex;
  justify-content: space-between;
  border-bottom: 3px double #000;
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.report-logo {
  font-family: var(--font-comic);
  font-size: 1.4rem;
  letter-spacing: 1px;
  color: #000;
  border: 2px solid #000;
  padding: 4px 10px;
  display: inline-block;
  line-height: 1;
}

.report-doc-info {
  text-align: right;
  font-size: 0.75rem;
  line-height: 1.4;
}

.report-title {
  font-size: 1.5rem;
  text-align: center;
  font-weight: bold;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  text-decoration: underline;
}

.report-meta-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  row-gap: 10px;
  column-gap: 30px;
  border: 1px solid #000;
  padding: 12px 16px;
  margin-bottom: 24px;
  background-color: #fafafa;
}

.report-meta-row {
  display: flex;
  font-size: 0.85rem;
}

.report-meta-label {
  font-weight: bold;
  width: 130px;
  flex-shrink: 0;
}

.report-meta-val {
  border-bottom: 1px solid #777;
  flex-grow: 1;
  padding-bottom: 2px;
}

.report-analyst-input {
  width: 100%;
  border: none;
  background: none;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: bold;
  color: #333;
  outline: none;
  padding: 0;
  margin: 0;
}

.report-subheading {
  font-size: 1rem;
  font-weight: bold;
  border-bottom: 1px solid #000;
  padding-bottom: 4px;
  margin-bottom: 12px;
  margin-top: 24px;
}

/* Formal Report Data Tables */
.report-data-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
  font-size: 0.85rem;
}

.report-data-table th,
.report-data-table td {
  border: 1px solid #000;
  padding: 8px 12px;
  text-align: left;
}

.report-data-table th {
  background-color: #eaeaea;
  font-weight: bold;
}

.report-data-table tr.highlight-row {
  background-color: #fff9d1;
  font-weight: bold;
  font-size: 0.9rem;
}

/* Checklists & Sign-offs */
.glp-report-checklist {
  list-style: none;
  font-size: 0.8rem;
  line-height: 1.6;
  padding-left: 4px;
}

.report-footer-signs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  margin-top: 50px;
  padding-top: 20px;
}

.sign-block {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sign-line {
  width: 100%;
  border-bottom: 1px solid #000;
  height: 30px;
  margin-bottom: 6px;
  text-align: center;
}

.sign-line.sign-line-filled {
  border-bottom: 2px dotted #000;
  font-family: "Comic Neue", cursive;
  font-size: 0.85rem;
  padding-bottom: 2px;
  height: auto;
}

.sign-label {
  font-size: 0.75rem;
  font-weight: bold;
  color: #555;
}

/* Action panel for reporting */
.report-actions-panel {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  width: 100%;
}

.report-actions-panel.active {
  display: flex;
}

.btn-print-record {
  background-color: var(--pink);
  border: var(--border-thick);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-comic);
  font-size: 1.35rem;
  padding: 12px 24px;
  cursor: pointer;
  letter-spacing: 1px;
  box-shadow: 4px 4px 0 var(--ink);
  transition: transform 0.25s, box-shadow 0.25s;
  outline: none;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: normal;
}

.btn-print-record:hover {
  transform: translateY(-3px);
  box-shadow: 6px 6px 0 var(--ink);
}

.report-actions-tip {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: #555;
  text-align: center;
}

/* ── NEW SIMULATORS: TITRATION, CALIBRATION, SAFETY, SPECTROPHOTOMETRY ── */

/* Burette setup and animations */
.lab-burette {
  background-image: linear-gradient(to right, rgba(255,255,255,0.8), rgba(255,255,255,0.3));
}

.lab-flask {
  background-image: linear-gradient(to right, rgba(255,255,255,0.7), rgba(255,255,255,0.2));
  box-shadow: inset 2px -2px 0 rgba(255,255,255,0.6);
}

.titration-drop-fluid {
  animation: dropFall 0.8s cubic-bezier(0.55, 0.055, 0.675, 0.19) infinite;
}

@keyframes dropFall {
  0% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
  100% {
    transform: translateY(115px) scale(0.6);
    opacity: 0;
  }
}

/* Weight selection styling */
.btn-weight {
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-weight:hover {
  transform: translateY(-2px);
  box-shadow: 3px 3px 0 var(--ink) !important;
}

/* Digital Scale LED */
.balance-led-screen {
  background-color: #0d1e0d;
}

/* GHS Pictograms custom styling */
.ghs-pictogram {
  width: 32px;
  height: 32px;
  border: 2px solid #ff2d6b;
  background-color: var(--white);
  transform: rotate(45deg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 1.5px 1.5px 0 var(--ink);
  transition: transform 0.3s ease;
  margin: 6px;
}
.ghs-pictogram span {
  transform: rotate(-45deg);
  font-size: 0.95rem;
  font-weight: bold;
  color: var(--ink);
}

/* Smoke and fire chamber triggers */
@keyframes shakeHood {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  20%, 60% { transform: translate(-3px, 0) rotate(-1deg); }
  40%, 80% { transform: translate(3px, 0) rotate(1deg); }
}

.hood-shaking {
  animation: shakeHood 0.15s linear infinite;
}

/* LED Digital text effects */
#spec-abs-led, #balance-led-readout {
  font-family: 'Courier New', Courier, monospace;
}

/* Wavelength scan styles */
.spec-optical-layout {
  box-sizing: border-box;
}

/* Expand tab-ribbon navigation for 6 buttons on responsive devices */
.tab-ribbon {
  overflow-x: auto;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none;  /* IE 10+ */
}
.tab-ribbon::-webkit-scrollbar {
  display: none; /* WebKit */
}

/* Stable flag pulsing */
@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
#cal-stable-flag.stable-pulsing {
  animation: pulse 1.2s infinite;
}

/* Dynamic display setups for print template */
.print-only {
  display: none;
}

/* Minor custom spacing adjustments */
.checklist-desc-spacing {
  margin-bottom: 5px;
}
.calibration-form-field {
  margin-top: 5px;
  border-top: 2px dashed rgba(0,0,0,0.1);
  padding-top: 10px;
}
.calibration-visualizer-card,
.safety-visualizer-card {
  justify-content: space-between;
}
#btn-mix-safety {
  background-color: var(--pink);
  margin-top: 10px;
}

/* 💧 Titration Desk Styles */
.titration-actions {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}
.btn-titration-action {
  flex-grow: 1;
  padding: 10px;
  font-size: 1.1rem;
  white-space: normal;
  min-width: 0;
}
#btn-add-drop {
  background-color: var(--blue);
}
.btn-reset-titration-btn {
  flex-shrink: 0;
  width: 44px;
  padding: 10px;
  background-color: var(--ink);
}
.titration-visualizer-grid {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: stretch;
  gap: 16px;
}
.burette-setup {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  position: relative;
  width: 100%;
}
.lab-burette {
  width: 14px;
  height: 180px;
  border: 3px solid var(--ink);
  background-color: rgba(255,255,255,0.7);
  position: relative;
  border-radius: 0;
  box-shadow: inset 1px 0 0 rgba(255,255,255,0.5);
}
.burette-fluid {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(0, 194, 255, 0.25);
  transition: height 0.3s ease;
}
.burette-marks {
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 2px;
  right: 2px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-size: 0.5rem;
  color: #555;
  pointer-events: none;
}
.stopcock-valve {
  width: 24px;
  height: 12px;
  background-color: var(--ink);
  border: 2px solid var(--cream);
  border-radius: 4px;
  margin: 2px 0;
  z-index: 5;
}
.lab-flask {
  width: 70px;
  height: 75px;
  border: 3px solid var(--ink);
  border-top: none;
  background-color: rgba(255,255,255,0.7);
  position: relative;
  border-radius: 0 0 16px 16px;
  clip-path: polygon(30% 0, 70% 0, 100% 100%, 0 100%);
  overflow: hidden;
  margin-top: 10px;
}
.flask-liquid {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  transition: background-color 0.4s ease, height 0.4s ease;
}
.titration-drop-fluid {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: rgba(0, 194, 255, 0.6);
  top: 190px;
  display: none;
  z-index: 10;
}
.titration-plotting {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  height: 100%;
}
.titration-canvas {
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background-color: var(--white);
  box-shadow: 2px 2px 0 var(--ink);
  width: 100%;
  height: 160px;
  display: block;
}

/* ⚖️ Calibration Station Styles */
.weight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.btn-weight {
  font-size: 1.05rem;
  padding: 10px 5px;
}
#btn-weight-1 {
  background-color: var(--purple);
}
#btn-weight-5 {
  background-color: var(--blue);
}
#btn-weight-10 {
  background-color: var(--pink);
}
#txt-observed-weight {
  font-family: monospace;
  font-weight: bold;
  background-color: var(--white);
  cursor: text;
}
.calibration-input-row {
  display: flex;
  gap: 8px;
}
#btn-cal-verify {
  padding: 8px 12px;
  font-size: 1rem;
  width: auto;
  flex-shrink: 0;
  background-color: var(--yellow);
  color: var(--ink);
  border: var(--border-thin);
}
#btn-cal-clear {
  padding: 8px 10px;
  font-size: 1rem;
  background-color: var(--ink);
}
.calibration-visualizer-grid {
  display: grid;
  grid-template-columns: 100px 1fr;
  align-items: center;
  gap: 20px;
  flex-grow: 1;
}
.scale-pan-setup {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
}
.scale-pan-top {
  width: 60px;
  height: 6px;
  background-color: #aaa;
  border: 2px solid var(--ink);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
}
#scale-active-weight {
  width: 24px;
  height: 28px;
  background-color: #ffd700;
  border: 2px solid var(--ink);
  border-radius: 4px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  font-family: var(--font-comic);
  box-shadow: 1.5px 1.5px 0 var(--ink);
}
.scale-pan-base {
  width: 80px;
  height: 20px;
  background-color: var(--cream);
  border: 3px solid var(--ink);
  border-radius: 4px;
  box-shadow: 2px 2px 0 var(--ink);
  z-index: 2;
}
.scale-screen-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}
.balance-led-screen {
  background-color: #0b1d0b;
  border: 3px solid var(--ink);
  padding: 12px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-pop);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.balance-led-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.55rem;
  color: #4da64d;
  font-family: monospace;
  letter-spacing: 0.5px;
}
#balance-led-readout {
  font-family: monospace;
  font-size: 2.1rem;
  font-weight: bold;
  color: #5eff5e;
  text-shadow: 0 0 8px rgba(94,255,94,0.6);
  text-align: right;
  letter-spacing: 1px;
  padding: 2px 0;
}

/* 🔥 Chemical Safety Matrix Styles */
.safety-visualizer-grid {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  align-items: center;
  flex-grow: 1;
}
.fume-hood {
  width: 100%;
  height: 120px;
  border: 3px solid var(--ink);
  background-color: #e5f6ff;
  border-radius: var(--radius);
  position: relative;
  box-shadow: inset 3px 3px 0 rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.fume-hood-sash {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 35px;
  background-color: rgba(255,255,255,0.4);
  border-bottom: 2px solid var(--ink);
  z-index: 3;
}
#hood-status-icon {
  font-size: 3.2rem;
  transform: scale(1);
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.25);
  z-index: 2;
}
#hood-smoke {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  background-color: rgba(255, 45, 107, 0.25);
  display: none;
  z-index: 1;
}
.safety-placard-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}
#ghs-placards-panel {
  display: flex;
  gap: 8px;
  min-height: 48px;
  align-items: center;
}

/* 🔬 Spectrophotometer Scanner Styles */
.spec-visualizer-grid {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  align-items: stretch;
}
.spec-optical-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  border-right: 2px dashed rgba(0,0,0,0.1);
  padding-right: 12px;
  position: relative;
}
.spec-light-source {
  font-size: 1.8rem;
  margin-bottom: 5px;
}
.spec-optical-beam-path {
  width: 100%;
  height: 16px;
  background-color: #ddd;
  border: 2px solid var(--ink);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}
.spec-emitter-beam {
  position: absolute;
  left: 0;
  width: 35px;
  height: 100%;
  background-color: #fffa65;
}
#spec-light-beam {
  position: absolute;
  left: 35px;
  width: 60px;
  height: 100%;
  background-color: #fffa65;
  opacity: 0.9;
  transition: opacity 0.3s;
}
#spec-detector-beam {
  position: absolute;
  left: 95px;
  right: 0;
  height: 100%;
  background-color: #fffa65;
  opacity: 0.6;
  transition: opacity 0.3s;
}
#spec-cuvette {
  position: absolute;
  left: 35px;
  width: 60px;
  height: 100%;
  border-left: 2px solid var(--ink);
  border-right: 2px solid var(--ink);
  background-color: rgba(0, 194, 255, 0.4);
  transition: background-color 0.4s;
}
.spec-absorbance-box {
  margin-top: 14px;
  background-color: #1a0030;
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 4px 8px;
  width: 100%;
  box-shadow: 2px 2px 0 var(--ink);
  box-sizing: border-box;
}
.spec-absorbance-label {
  font-size: 0.5rem;
  color: #c48fff;
  font-family: monospace;
}
#spec-abs-led {
  font-size: 1.25rem;
  font-family: monospace;
  font-weight: bold;
  color: #ea8aff;
  text-align: center;
}
.spec-plotting-area {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
  width: 100%;
}
.spec-canvas {
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background-color: var(--white);
  box-shadow: 2px 2px 0 var(--ink);
  width: 100%;
  height: 130px;
  display: block;
}

/* 📖 Lab Manual styling */
.lab-manual-card {
  margin-top: 30px;
  background-color: var(--cream);
  border: var(--border-thick);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-pop);
  position: relative;
  min-width: 0;
}

.manual-title {
  font-family: var(--font-comic);
  font-size: 1.6rem;
  color: var(--ink);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.manual-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  min-width: 0;
}

.manual-section {
  background-color: var(--white);
  border: var(--border-thin);
  border-radius: 8px;
  padding: 16px;
  box-shadow: 3px 3px 0 var(--ink);
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.manual-section-title {
  font-family: var(--font-comic);
  font-size: 1.15rem;
  letter-spacing: 0.5px;
  border-bottom: 2px dashed rgba(0, 0, 0, 0.1);
  padding-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.manual-section-title.what {
  color: var(--pink);
}

.manual-section-title.how {
  color: var(--blue);
}

.manual-section-title.why {
  color: var(--purple);
}

.manual-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: #333;
  line-height: 1.45;
}

/* ──────────────────────────────────────────
   RESPONSIVE DESIGN (Media Queries)
   ────────────────────────────────────────── */

@media (max-width: 900px) {
  .lab-container {
    grid-template-columns: 1fr;
    margin-top: calc(var(--nav-height) + 20px);
  }

  .lab-sidebar {
    display: none; /* hidden completely on mobile viewports for clean focus on calculators */
  }

  .pane-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .manual-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }
}

@media (max-width: 600px) {
  .lab-card {
    padding: 24px 16px;
  }

  .visualizer-content {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 20px;
  }

  .beaker-container {
    height: 180px;
  }

  .lab-beaker {
    width: 110px;
    height: 160px;
  }

  .calculation-board {
    width: 100%;
  }

  .tab-btn {
    font-size: 1rem;
    padding: 8px 12px;
  }

  .glp-report-sheet {
    padding: 20px;
  }

  .report-meta-table {
    grid-template-columns: 1fr;
    row-gap: 8px;
  }

  .report-title {
    font-size: 1.25rem;
  }

  .burst {
    display: none !important;
  }

  .report-data-table {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* 💧 Titration Grid Stack */
  .titration-visualizer-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 20px;
  }
  .burette-setup {
    height: 290px;
    width: 100%;
  }
  .titration-plotting {
    width: 100%;
    align-items: center;
  }
  
  /* ⚖️ Calibration Grid Stack */
  .calibration-visualizer-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 20px;
  }
  .scale-pan-setup {
    height: 80px;
  }
  .scale-screen-panel {
    width: 100%;
  }
  
  /* 🔥 Safety Grid Stack */
  .safety-visualizer-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 20px;
  }
  .fume-hood {
    max-width: 160px;
  }
  .safety-placard-panel {
    width: 100%;
  }
  
  /* 🔬 Spectrophotometer Grid Stack */
  .spec-visualizer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .spec-optical-layout {
    border-right: none;
    border-bottom: 2px dashed rgba(0,0,0,0.1);
    padding-right: 0;
    padding-bottom: 16px;
    width: 100%;
  }
  .spec-plotting-area {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .lab-container {
    padding: 0 10px;
    margin-top: calc(var(--nav-height) + 15px);
    margin-bottom: 30px;
  }
  
  .lab-card {
    padding: 16px 12px;
  }
  
  .visualizer-card {
    padding: 16px 8px;
  }
  
  .weight-grid button {
    font-size: 0.9rem;
    padding: 8px 4px;
  }

  .report-footer-signs {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .btn-generate-record {
    font-size: 1.1rem !important;
    padding: 10px 16px !important;
    white-space: normal !important;
  }

  #balance-led-readout {
    font-size: 1.7rem !important;
  }

  .calc-speech-bubble {
    font-size: 0.85rem !important;
    padding: 8px 12px !important;
  }

  .lab-manual-card {
    padding: 16px 12px !important;
    margin-top: 20px !important;
  }
  
  .manual-title {
    font-size: 1.3rem !important;
    margin-bottom: 12px !important;
  }
  
  .manual-section {
    padding: 12px !important;
  }
  
  .manual-section-title {
    font-size: 1rem !important;
  }
  
  .manual-text {
    font-size: 0.82rem !important;
  }
}

@media (max-width: 400px) {
  .tab-btn {
    font-size: 0.85rem;
    padding: 6px 8px;
  }

  .test-tube-rack {
    gap: 8px;
    padding: 20px 10px 10px 10px;
  }

  .test-tube {
    width: 26px;
    height: 110px;
  }

  .tube-concentration {
    font-size: 0.8rem;
    min-width: 50px;
  }
  
  .btn-dilute, .btn-auto-titrate, .btn-weight {
    font-size: 0.95rem;
  }
}

@media (max-width: 360px) {
  .calibration-input-row {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  
  .calibration-input-row #btn-cal-verify {
    width: 100%;
  }
  
  .titration-actions {
    gap: 6px;
  }
  
  .btn-titration-action {
    font-size: 0.9rem;
    padding: 8px;
  }
  
  .btn-reset-titration-btn {
    width: 38px;
    padding: 8px;
  }

  .report-meta-row {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .report-meta-label {
    width: 100%;
    margin-bottom: 2px;
  }

  .calc-row {
    font-size: 0.85rem !important;
  }
  
  .calc-result-row {
    padding: 8px 10px !important;
  }
  
  .calc-result-row .calc-label {
    font-size: 1rem !important;
  }
  
  .calc-result-val {
    font-size: 1.15rem !important;
  }
}

@media (max-width: 320px) {
  .lab-container {
    padding: 0 6px !important;
  }
  
  .lab-card {
    padding: 14px 8px !important;
    gap: 15px !important;
  }
  
  .card-tag {
    font-size: 0.8rem !important;
    padding: 3px 8px !important;
    left: 10px !important;
  }
  
  .calc-result-row {
    padding: 6px 8px !important;
  }
  
  .calc-result-row .calc-label {
    font-size: 0.9rem !important;
  }
  
  .calc-result-val {
    font-size: 1.1rem !important;
  }
  
  .btn-generate-record {
    font-size: 1rem !important;
    padding: 10px 12px !important;
  }
  
  .tab-btn {
    font-size: 0.8rem !important;
    padding: 6px 6px !important;
  }
  
  #btn-mix-safety {
    font-size: 1rem !important;
  }
  
  .weight-grid {
    gap: 6px !important;
  }
  
  .btn-weight {
    font-size: 0.85rem !important;
  }
}


/* ──────────────────────────────────────────
   PRINT STYLING (CGMP Report Print mode)
   ────────────────────────────────────────── */
@media print {
  /* Hides everything except report sheet on print layout */
  body {
    background-color: #fff !important;
    background-image: none !important;
    color: #000 !important;
    padding: 0 !important;
    margin: 0 !important;
    font-family: Arial, sans-serif !important;
  }

  /* Reset design elements */
  .halftone-bg,
  .burst,
  .comic-nav,
  .lab-sidebar,
  .tab-ribbon,
  .pane-inputs,
  .card-tag,
  .calc-speech-bubble,
  .btn-generate-record,
  .report-actions-panel,
  .comic-footer,
  .no-print {
    display: none !important;
  }

  /* Force display sheet */
  .glp-report-sheet {
    display: block !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 auto !important;
    max-width: 100% !important;
    page-break-after: avoid;
  }

  /* Display print-only elements */
  .print-only {
    display: inline !important;
  }

  .lab-container {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
    max-width: 100% !important;
  }

  .lab-workbench {
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .workbench-pane {
    display: none !important; /* Hide workbench inputs and interactives */
  }

  /* Clean up tables */
  .report-data-table th {
    background-color: #f2f2f2 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .report-data-table tr.highlight-row {
    background-color: #fffde8 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}