/* ============================================================
   style.css – ClearWater Lab  Global Styles
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --color-bg:       #f5f5f7;
  --color-surface:  rgba(255, 255, 255, 0.60);
  --color-glass-border: rgba(255, 255, 255, 0.35);
  --color-primary:  #4FC3F7;
  --color-primary-dark: #039BE5;
  --color-green:    #81C784;
  --color-amber:    #FFB74D;
  --color-red:      #E57373;
  --color-text:     #1d1d1f;
  --color-text-sec: #6e6e73;
  --color-white:    #ffffff;

  --glass-blur:     12px;
  --radius-sm:      8px;
  --radius-md:      14px;
  --radius-lg:      22px;
  --shadow-card:    0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover:   0 8px 32px rgba(0, 0, 0, 0.10);

  --font-stack: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --transition:     0.3s cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 20px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(79, 195, 247, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(129, 199, 132, 0.06) 0%, transparent 50%);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

img, svg { display: block; max-width: 100%; }

/* ---------- Utility ---------- */
.hidden   { display: none !important; }
.sr-only  { position: absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); }

/* ---------- Top Navigation ---------- */
#top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  height: 64px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--color-glass-border);
}

.nav-brand {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--color-primary-dark);
}

.nav-right {
  display: flex;
  gap: 10px;
  align-items: center;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 22px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 14px rgba(3, 155, 229, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-dark);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: rgba(79, 195, 247, 0.10);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-sec);
}
.btn-ghost:hover {
  color: var(--color-primary-dark);
}

.btn-lg {
  font-size: 1.1rem;
  padding: 14px 38px;
  border-radius: var(--radius-md);
}

.btn-full {
  width: 100%;
}

/* ---------- Screen System ---------- */
.screen {
  display: none;
  padding-top: 80px;          /* clear fixed nav */
  min-height: 100vh;
  animation: fadeIn 0.4s ease;
}

.screen.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- Landing / Hero ---------- */
.hero {
  text-align: center;
  padding: 60px 24px 30px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .subtitle {
  margin-top: 10px;
  font-size: 1.15rem;
  color: var(--color-text-sec);
}

.section-heading {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  margin: 10px 0 28px;
}

#task1-screen .wide-card,
#task1-demo-screen .wide-card {
  max-width: min(1160px, calc(100vw - 32px));
}

.task1-layout {
  display: grid;
  grid-template-columns: 430px minmax(0, 1fr);
  gap: 20px;
  margin-top: 10px;
}

.task1-inventory,
.task1-board {
  background: rgba(255, 255, 255, 0.46);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.task1-board h3,
.task1-inventory h3 {
  margin-bottom: 12px;
}

.task1-inventory {
  padding: 20px 22px 22px;
  border: 1.5px solid rgba(142, 202, 255, 0.5);
  box-shadow: 0 10px 28px rgba(56, 132, 191, 0.12);
}

.task1-inventory-header {
  text-align: center;
  margin-bottom: 18px;
}

.task1-inventory-header h3 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 170px;
  padding: 8px 18px;
  margin-bottom: 8px;
  border-radius: 9px;
  background: linear-gradient(180deg, #1976d2, #46a8f5);
  color: #fff;
  box-shadow: 0 3px 8px rgba(25, 118, 210, 0.32);
  font-size: 1.08rem;
  letter-spacing: 0.02em;
}

.task1-inventory-header p {
  color: #4a5b6b;
  font-weight: 700;
  font-size: 0.9rem;
}

.task1-materials-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.task1-inventory .material-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
  min-height: 218px;
  padding: 12px 14px 14px;
  margin-bottom: 0;
  border-width: 2px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.88));
  box-shadow: 0 8px 18px rgba(53, 98, 135, 0.1);
}

.task1-inventory .material-card[data-material="gravel"] {
  border-color: rgba(96, 176, 244, 0.45);
  background: linear-gradient(180deg, #f8fcff, #eef8ff);
}

.task1-inventory .material-card[data-material="coarseSand"] {
  border-color: rgba(245, 171, 75, 0.45);
  background: linear-gradient(180deg, #fffaf2, #fff3e1);
}

.task1-inventory .material-card[data-material="sand"] {
  border-color: rgba(112, 191, 118, 0.45);
  background: linear-gradient(180deg, #fbfff8, #effbea);
}

.task1-inventory .material-card[data-material="cotton"] {
  border-color: rgba(183, 139, 235, 0.45);
  background: linear-gradient(180deg, #fffaff, #f7efff);
}

.task1-inventory .material-swatch {
  width: 100%;
  height: 88px;
  border-radius: 14px;
}

.task1-inventory .material-info {
  align-items: center;
  text-align: center;
  gap: 8px;
}

.task1-inventory .material-info strong {
  font-size: 1.2rem;
  font-weight: 800;
}

.task1-inventory .material-card[data-material="gravel"] strong { color: #1565c0; }
.task1-inventory .material-card[data-material="coarseSand"] strong { color: #ef7d18; }
.task1-inventory .material-card[data-material="sand"] strong { color: #2e9d46; }
.task1-inventory .material-card[data-material="cotton"] strong { color: #6a39c7; }

.task1-inventory .material-info small {
  color: #27384a;
  font-weight: 700;
  font-size: 0.82rem;
  line-height: 1.45;
}

.task1-inventory-hint {
  margin-top: 20px;
  color: #6b7c8d;
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
}

.task1-inventory-hint::before {
  content: '☝';
  margin-right: 8px;
  color: #93a4b4;
}

.task1-inventory.drag-over {
  outline: 2px dashed var(--color-primary);
  outline-offset: 4px;
  background: rgba(79, 195, 247, 0.08);
}

.ranking-slots {
  display: grid;
  grid-template-columns: auto repeat(4, minmax(92px, 1fr)) auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.ranking-slot {
  min-height: 92px;
  border: 1.5px dashed rgba(0, 0, 0, 0.18);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.6);
  color: var(--color-text-sec);
  text-align: center;
}

.ranking-size-label {
  color: var(--color-primary-dark);
  display: inline-flex;
  font-weight: 800;
  font-size: 0.82rem;
  line-height: 1.2;
  white-space: nowrap;
  text-align: center;
}

.ranking-slot.drag-over {
  border-color: var(--color-primary);
  background: rgba(79, 195, 247, 0.08);
}

.rank-chip {
  width: 100%;
  min-height: 68px;
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
}

.rank-chip.dragging {
  opacity: 0.65;
  cursor: grabbing;
}

.rank-chip.layer-gravel { background: #8a8a8a; }
.rank-chip.layer-coarseSand { background: #a3a3a3; }
.rank-chip.layer-sand { background: #c9a96e; }
.rank-chip.layer-cotton { background: #bfcad3; color: #2d3740; }

.task1-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.ranking-feedback {
  margin: 10px 0 16px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(79, 195, 247, 0.09);
  color: var(--color-primary-dark);
  font-size: 0.92rem;
  font-weight: 600;
  white-space: pre-line;
}

.ranking-feedback.error {
  background: rgba(229, 115, 115, 0.12);
  color: #b33b3b;
}

.ranking-feedback.success,
.ranking-ready {
  background: rgba(129, 199, 132, 0.14);
  color: #2e7d32;
}

.ranking-ready {
  padding: 8px 0;
  font-size: 0.95rem;
  font-weight: 700;
}

.task1-filters-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 18px;
}

.mini-filter {
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.78), rgba(255,255,255,0.48));
  padding: 16px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.mini-filter.running {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.mini-filter.complete {
  border-color: rgba(129, 199, 132, 0.7);
}

.mini-filter-name {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-align: center;
  color: var(--color-primary-dark);
}

.mini-filter-body {
  height: 250px;
  position: relative;
  display: block;
}

.mini-filter-reservoir {
  position: absolute;
  top: 22px;
  left: 50%;
  width: 132px;
  height: 34px;
  transform: translateX(-50%);
  clip-path: polygon(0 0, 100% 0, 72% 100%, 28% 100%);
  border-radius: 0 0 18px 18px;
  background: linear-gradient(180deg, #5D4037, #8D6E63);
  box-shadow: inset 0 2px 10px rgba(255,255,255,0.2);
  z-index: 2;
}

.mini-filter-media {
  position: absolute;
  top: 60px;
  left: 50%;
  width: 112px;
  height: 78px;
  transform: translateX(-50%);
  clip-path: polygon(0 0, 100% 0, 66% 100%, 34% 100%);
  border: 2px solid rgba(255,255,255,0.75);
  border-radius: 0 0 18px 18px;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(255,255,255,0.18), 0 8px 18px rgba(0,0,0,0.08);
  z-index: 2;
}

.mini-filter-body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 164px;
  height: 156px;
  transform: translateX(-50%);
  background:
    linear-gradient(115deg, rgba(255,255,255,0.5) 0 18%, transparent 19% 100%),
    linear-gradient(180deg, rgba(232,241,248,0.76), rgba(197,212,224,0.42));
  clip-path: polygon(2% 4%, 98% 4%, 57% 72%, 57% 96%, 43% 96%, 43% 72%);
  filter: drop-shadow(0 6px 12px rgba(35, 65, 82, 0.13));
  pointer-events: none;
  z-index: 0;
}

.mini-filter-body::after {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  width: 168px;
  height: 16px;
  transform: translateX(-50%);
  border: 2.5px solid rgba(118, 139, 154, 0.5);
  border-bottom-color: rgba(118, 139, 154, 0.22);
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  pointer-events: none;
  z-index: 4;
}

.mini-filter-media.layer-gravel {
  background:
    radial-gradient(ellipse 15px 11px at 18% 38%, #7A7A7A 50%, transparent 51%),
    radial-gradient(ellipse 17px 13px at 52% 24%, #9A9A9A 50%, transparent 51%),
    radial-gradient(ellipse 20px 14px at 76% 62%, #666666 50%, transparent 51%),
    radial-gradient(ellipse 12px 9px at 34% 78%, #A8A8A8 50%, transparent 51%),
    #C7CED2;
}

.mini-filter-media.layer-coarseSand {
  background:
    radial-gradient(circle 3px at 18% 24%, #B98545 50%, transparent 51%),
    radial-gradient(circle 2.4px at 40% 20%, #D0A05E 50%, transparent 51%),
    radial-gradient(circle 3px at 70% 30%, #A8753E 50%, transparent 51%),
    radial-gradient(circle 2.3px at 30% 58%, #C8924E 50%, transparent 51%),
    radial-gradient(circle 2.8px at 60% 68%, #A96F37 50%, transparent 51%),
    radial-gradient(circle 2.2px at 82% 76%, #D2A060 50%, transparent 51%),
    repeating-conic-gradient(#D8AC6E 0% 20%, #B77D3E 0% 40%, #E4C083 0% 60%) 0 0 / 10px 10px;
}

.mini-filter-media.layer-sand {
  background:
    repeating-conic-gradient(#E8D5A3 0% 25%, #D4B96A 0% 50%) 0 0 / 8px 8px;
}

.mini-filter-media.layer-cotton {
  background: linear-gradient(135deg, #FAFAFA 0%, #F5F5F5 25%, #FFFFFF 50%, #F0F0F0 75%, #FAFAFA 100%);
}

.mini-filter-media::after {
  content: '';
  position: absolute;
  left: 50%;
  top: -6px;
  width: 12px;
  height: 96px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(93,64,55,0.3), rgba(173,216,245,0.55));
  opacity: 0;
}

.mini-filter.running .mini-filter-media::after {
  opacity: 1;
  animation: miniFilterPulse 1s ease-in-out infinite;
}

.mini-filter-stream {
  position: absolute;
  top: 150px;
  left: calc(50% - 4px);
  width: 8px;
  height: 46px;
  border-radius: 99px;
  background: linear-gradient(180deg, rgba(93,64,55,0.5), rgba(173,216,245,0.9));
  opacity: 0;
  transform-origin: top;
  z-index: 1;
}

.mini-filter.running .mini-filter-stream {
  opacity: 1;
  animation-name: miniStream;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.mini-filter-beaker {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 118px;
  height: 66px;
  transform: translateX(-50%);
  border: 2.5px solid rgba(118, 139, 154, 0.45);
  border-top: none;
  border-radius: 0 0 18px 18px;
  overflow: hidden;
  background:
    linear-gradient(110deg, rgba(255,255,255,0.48) 0 18%, transparent 19% 100%),
    rgba(255,255,255,0.25);
  box-shadow: inset 0 0 16px rgba(255,255,255,0.24);
}

.mini-filter-beaker::before {
  content: '';
  position: absolute;
  top: -8px;
  left: -3px;
  right: -3px;
  height: 16px;
  border: 2.5px solid rgba(118, 139, 154, 0.45);
  border-bottom-color: rgba(118, 139, 154, 0.2);
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  z-index: 3;
}

.mini-water {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0%;
  background: linear-gradient(180deg, rgba(93, 64, 55, 0.5), rgba(173, 216, 245, 0.55));
}

.mini-water::before,
.mini-water::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.mini-water-gravel {
  background:
    radial-gradient(circle 4px at 20% 28%, rgba(68, 45, 32, 0.85) 65%, transparent 66%),
    radial-gradient(circle 5px at 62% 42%, rgba(82, 55, 38, 0.78) 65%, transparent 66%),
    radial-gradient(circle 3px at 42% 70%, rgba(96, 65, 45, 0.8) 65%, transparent 66%),
    linear-gradient(180deg, rgba(98, 64, 43, 0.78), rgba(132, 95, 62, 0.62));
}

.mini-water-gravel::after {
  background:
    radial-gradient(circle 2.5px at 72% 72%, rgba(70, 48, 34, 0.85) 60%, transparent 61%),
    radial-gradient(circle 2px at 30% 54%, rgba(78, 52, 37, 0.7) 60%, transparent 61%);
  animation: particleDrift 2.4s ease-in-out infinite;
}

.mini-water-coarseSand {
  background:
    radial-gradient(circle 2px at 24% 36%, rgba(93, 64, 55, 0.58) 60%, transparent 61%),
    radial-gradient(circle 1.6px at 58% 60%, rgba(93, 64, 55, 0.5) 60%, transparent 61%),
    radial-gradient(circle 1.8px at 78% 42%, rgba(93, 64, 55, 0.45) 60%, transparent 61%),
    linear-gradient(180deg, rgba(128, 90, 58, 0.48), rgba(172, 138, 91, 0.36));
}

.mini-water-coarseSand::after {
  background:
    radial-gradient(circle 1.4px at 38% 76%, rgba(93, 64, 55, 0.5) 60%, transparent 61%),
    radial-gradient(circle 1.2px at 66% 24%, rgba(93, 64, 55, 0.45) 60%, transparent 61%);
  animation: particleDrift 3s ease-in-out infinite;
}

.mini-water-sand {
  background:
    radial-gradient(circle 1px at 40% 56%, rgba(164, 120, 68, 0.28) 60%, transparent 61%),
    linear-gradient(180deg, rgba(184, 146, 87, 0.22), rgba(196, 173, 123, 0.2));
}

.mini-water-cotton {
  background:
    radial-gradient(circle 1px at 64% 62%, rgba(130, 100, 70, 0.18) 60%, transparent 61%),
    linear-gradient(180deg, rgba(190, 214, 206, 0.32), rgba(214, 226, 212, 0.26));
}

.mini-score {
  margin-top: 12px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: rgba(129, 199, 132, 0.14);
  font-size: 0.82rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  text-align: center;
  animation: fadeIn 0.4s ease;
}

.task1-demo-actions {
  justify-content: center;
  margin-top: 20px;
}

@keyframes miniStream {
  0% { transform: scaleY(0.35); opacity: 0.25; }
  50% { transform: scaleY(1); opacity: 0.95; }
  100% { transform: scaleY(0.35); opacity: 0.25; }
}

@keyframes miniFilterPulse {
  0%, 100% { transform: translateX(-50%) translateY(-10px); }
  50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes particleDrift {
  0%, 100% { transform: translateY(0); opacity: 0.9; }
  50% { transform: translateY(-5px); opacity: 0.65; }
}

/* ---------- Scenario Cards ---------- */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 24px 60px;
}

.scenario-card {
  background: var(--color-surface);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.scenario-card:hover,
.scenario-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.scenario-icon {
  width: 110px;
  height: 110px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}

.scenario-icon--river { background: rgba(141, 110, 99, 0.12); }
.scenario-icon--pond  { background: rgba(102, 187, 106, 0.12); }

.scenario-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.scenario-desc {
  font-size: 0.92rem;
  color: var(--color-text-sec);
  margin-bottom: 22px;
  white-space: pre-line;
  line-height: 1.55;
}

/* ---------- Lab Layout ---------- */
.lab-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 24px;
  max-width: 1340px;
  margin: 0 auto;
  padding: 0 28px 48px;
  min-height: calc(100vh - 130px);
  align-items: start;
  transition: grid-template-columns 0.4s ease;
}

.lab-layout.with-dashboard {
  grid-template-columns: 300px 1fr 300px;
}

/* Task header */
.task-header {
  text-align: center;
  padding: 12px 24px 4px;
}
.task-label {
  font-size: 0.88rem;
  color: var(--color-text-sec);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.task-name {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 4px;
}

/* ---------- Glassmorphism Panels ---------- */
.material-sidebar,
.dashboard {
  background: var(--color-surface);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
}

/* ---------- Dashboard Gauges ---------- */
.dashboard h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.gauge-group {
  margin-bottom: 20px;
}

.gauge-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-sec);
  margin-bottom: 6px;
}

.gauge-bar {
  width: 100%;
  height: 18px;
  background: rgba(0,0,0,0.06);
  border-radius: 9px;
  overflow: hidden;
}

.gauge-fill {
  height: 100%;
  border-radius: 7px;
  transition: width 1s ease;
}

.gauge-fill--turbidity {
  background: linear-gradient(90deg, var(--color-primary), var(--color-green));
}

.gauge-value {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  margin-top: 2px;
  color: var(--color-primary-dark);
}

.odor-display {
  display: flex;
  align-items: center;
  gap: 8px;
}
.odor-icon { font-size: 1.6rem; }
.odor-value {
  font-size: 1.1rem;
  font-weight: 700;
}
.odor-value.odor--strong { color: var(--color-red); }
.odor-value.odor--medium { color: var(--color-amber); }
.odor-value.odor--none   { color: var(--color-green); }

.flow-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.task2-trial-status {
  margin-top: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(79, 195, 247, 0.09);
  color: var(--color-primary-dark);
  font-size: 0.88rem;
  font-weight: 600;
  text-align: center;
}

.task2-trial-status.ready {
  background: rgba(129, 199, 132, 0.14);
  color: #2e7d32;
}

.task2-trial-status.error {
  background: rgba(229, 115, 115, 0.12);
  color: #b33b3b;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .lab-layout,
  .lab-layout.with-dashboard {
    grid-template-columns: 1fr;
    max-width: 540px;
  }

  .material-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .material-sidebar h3 {
    grid-column: 1 / -1;
  }

  .dashboard {
    order: 3;
  }

  .task1-layout {
    grid-template-columns: 1fr;
  }

  .task1-filters-grid {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .ranking-slots {
    grid-template-columns: auto minmax(120px, 1fr);
  }

  .ranking-size-label {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .hero h1 { font-size: 1.8rem; }
}