:root {
  color-scheme: dark;
  --bg: #07100f;
  --panel: #0d1a18;
  --panel-2: #10231f;
  --line: #23413b;
  --text: #ecfffb;
  --muted: #8ca9a2;
  --teal: #41f4cf;
  --mint: #9cffb4;
  --amber: #ffd166;
  --rose: #ff6680;
  --blue: #84b8ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(65, 244, 207, 0.15), transparent 32rem),
    linear-gradient(135deg, #050b0b 0%, var(--bg) 48%, #10100b 100%);
  color: var(--text);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  min-height: 100vh;
  align-content: start;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: rgba(8, 18, 17, 0.86);
  padding: 1.25rem;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand strong {
  display: block;
  font-size: 1.1rem;
}

.brand small,
.system-panel small,
.eyebrow,
.search-wrap label {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}

.brand-mark {
  width: 3rem;
  height: 3rem;
  border: 1px solid rgba(65, 244, 207, 0.5);
  border-radius: 0.5rem;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, rgba(65, 244, 207, 0.16), rgba(255, 209, 102, 0.1));
  box-shadow: inset 0 0 20px rgba(65, 244, 207, 0.12);
}

.brand-mark span,
.brand-mark span::before,
.brand-mark span::after {
  display: block;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 20px rgba(65, 244, 207, 0.8);
}

.brand-mark span {
  position: relative;
}

.brand-mark span::before,
.brand-mark span::after {
  content: "";
  position: absolute;
}

.brand-mark span::before {
  left: -0.9rem;
  top: 0.75rem;
  background: var(--amber);
}

.brand-mark span::after {
  right: -0.95rem;
  top: -0.72rem;
  background: var(--mint);
}

.nav-tabs {
  display: grid;
  gap: 0.5rem;
  margin-top: 2rem;
}

.nav-tab,
.primary-action,
.secondary-action,
.danger-action,
.icon-button {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  min-height: 2.45rem;
}

.nav-tab {
  text-align: left;
  padding: 0 0.85rem;
}

.nav-tab.active {
  background: rgba(65, 244, 207, 0.12);
  border-color: rgba(65, 244, 207, 0.65);
}

.system-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.system-panel div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.8rem;
}

.system-panel span {
  display: block;
  color: var(--mint);
  font-size: 1.55rem;
  font-weight: 800;
}

main {
  padding: 1.5rem;
  min-width: 0;
}

.topbar,
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.inline-title,
.review-header-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.review-header-actions {
  justify-content: flex-end;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 48rem;
  font-size: clamp(2rem, 5vw, 4.6rem);
  line-height: 0.98;
}

h2 {
  font-size: 1.55rem;
}

.search-wrap {
  width: min(100%, 22rem);
}

.library-search {
  width: 100%;
  margin: 0 0 1rem;
}

.match-search-row {
  display: grid;
  grid-template-columns: minmax(16rem, 1fr) minmax(16rem, 2fr);
  gap: 0.8rem;
  align-items: end;
  margin-top: 1rem;
}

.match-search-row .search-wrap {
  width: 100%;
}

.match-action-row {
  margin-top: 1rem;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #071311;
  color: var(--text);
  padding: 0.72rem 0.82rem;
  outline: none;
}

textarea {
  min-height: 3.5rem;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(65, 244, 207, 0.1);
}

.visual-band {
  display: grid;
  grid-template-columns: minmax(12rem, 24rem) 1fr;
  gap: 1rem;
  align-items: center;
  margin: 1.5rem 0;
  padding: 1rem;
  min-height: 10rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: linear-gradient(135deg, rgba(65, 244, 207, 0.08), rgba(255, 209, 102, 0.05));
  overflow: hidden;
}

.visual-band strong {
  display: block;
  font-size: clamp(1.5rem, 4vw, 3rem);
}

.visual-band span {
  display: block;
  max-width: 44rem;
  color: var(--muted);
  margin-top: 0.4rem;
}

.molecule-grid {
  min-height: 8rem;
  position: relative;
  background-image:
    linear-gradient(rgba(65, 244, 207, 0.11) 1px, transparent 1px),
    linear-gradient(90deg, rgba(65, 244, 207, 0.11) 1px, transparent 1px);
  background-size: 1.2rem 1.2rem;
}

.molecule-grid::before,
.molecule-grid::after {
  content: "";
  position: absolute;
  inset: 22% 10%;
  border-top: 2px solid rgba(156, 255, 180, 0.55);
  transform: rotate(-18deg);
}

.molecule-grid::after {
  inset: 54% 12%;
  transform: rotate(14deg);
  border-color: rgba(255, 209, 102, 0.55);
}

.molecule-grid i {
  position: absolute;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--teal);
  border-radius: 50%;
  background: #071311;
  box-shadow: 0 0 18px rgba(65, 244, 207, 0.52);
}

.molecule-grid i:nth-child(1) { left: 10%; top: 23%; }
.molecule-grid i:nth-child(2) { left: 36%; top: 12%; border-color: var(--amber); }
.molecule-grid i:nth-child(3) { left: 67%; top: 28%; }
.molecule-grid i:nth-child(4) { left: 19%; top: 68%; border-color: var(--mint); }
.molecule-grid i:nth-child(5) { left: 51%; top: 55%; border-color: var(--blue); }
.molecule-grid i:nth-child(6) { left: 81%; top: 72%; border-color: var(--rose); }

.view {
  display: none;
}

.active-view {
  display: block;
}

.practice-mode {
  display: none;
  margin-top: 1rem;
}

.active-practice-mode {
  display: block;
}

.practice-mode-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.practice-mode-tab {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  min-height: 2.45rem;
  padding: 0 1rem;
}

.practice-mode-tab.active {
  border-color: var(--teal);
  background: rgba(65, 244, 207, 0.12);
}

.class-filters,
.control-row,
.flash-actions,
.practice-filter fieldset {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.class-filters {
  margin: 1rem 0;
}

.class-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--text);
  min-height: 2.25rem;
  padding: 0 0.9rem;
}

.class-chip.active {
  border-color: var(--amber);
  color: var(--amber);
}

.class-chip span {
  color: var(--muted);
  margin-left: 0.35rem;
  font-weight: 700;
}

.drug-library {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(22rem, 1fr));
  gap: 1rem;
}

.drug-card,
.flashcard,
.match-column,
.rank-list li,
.review-card,
.result-card {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(13, 26, 24, 0.82);
  box-shadow: var(--shadow);
}

.drug-card {
  padding: 1.15rem;
}

.drug-card header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(35, 65, 59, 0.65);
}

.drug-card h3 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.2;
}

.drug-subtitle {
  margin-top: 0.25rem;
  color: var(--mint);
  font-size: 0.95rem;
}

.drug-card dl {
  display: grid;
  gap: 0;
  margin: 0;
}

.drug-card dt {
  color: var(--mint);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
}

.drug-card dd {
  margin: 0.22rem 0 0;
  color: #cde3df;
  line-height: 1.45;
}

.drug-card dl > div {
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(35, 65, 59, 0.45);
}

.drug-card dl > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.drug-card .quiet-field {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.75rem;
  align-items: baseline;
}

.drug-card .quiet-field dd {
  margin-top: 0;
}

.primary-action {
  background: var(--teal);
  color: #031210;
  border-color: var(--teal);
  font-weight: 800;
  padding: 0 1rem;
}

.secondary-action {
  padding: 0 0.9rem;
}

.danger-action {
  padding: 0 0.9rem;
  color: var(--rose);
}

.icon-button {
  width: 2.35rem;
}

.flash-settings {
  display: grid;
  grid-template-columns: minmax(12rem, 18rem) 1fr;
  gap: 0.8rem;
  margin-top: 1rem;
  align-items: stretch;
}

.settings-panel-head {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
}

.settings-panel-head h3 {
  margin: 0;
}

.flash-settings > label,
.flash-settings fieldset {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(13, 26, 24, 0.72);
  color: var(--muted);
  padding: 0.8rem;
}

.flash-settings > label {
  display: grid;
  gap: 0.45rem;
}

.flash-settings fieldset {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 0.95rem;
  margin: 0;
}

.flash-settings legend {
  padding: 0 0.3rem;
  color: var(--muted);
}

.flash-settings fieldset label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text);
  min-height: 2rem;
}

.flash-settings input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  accent-color: var(--teal);
}

.practice-filter {
  margin-top: 1rem;
}

.practice-filter fieldset {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(13, 26, 24, 0.58);
  color: var(--muted);
  margin: 0;
  padding: 0.75rem;
}

.practice-filter legend {
  padding: 0 0.3rem;
  color: var(--muted);
}

.practice-filter label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2rem;
  color: var(--text);
}

.practice-filter input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--teal);
}

.round-stats {
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(13, 26, 24, 0.58);
  padding: 0.8rem;
}

.progress-track {
  height: 0.55rem;
  border-radius: 999px;
  background: #071311;
  overflow: hidden;
  border: 1px solid rgba(65, 244, 207, 0.22);
}

.progress-track span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--mint));
}

.round-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  margin-top: 0.7rem;
  color: var(--muted);
}

.round-meta span {
  color: var(--text);
}

.flashcard {
  display: grid;
  place-items: center;
  min-height: 22rem;
  margin-top: 1rem;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
}

.flashcard button {
  margin-top: 0;
}

.flashcard .answer {
  color: var(--mint);
  margin-top: 1rem;
  max-width: 42rem;
}

.flashcard-inner {
  width: min(100%, 44rem);
}

.flash-title-row {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  max-width: 100%;
}

.flash-title-row h2 {
  overflow-wrap: anywhere;
}

.speak-icon {
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  min-height: 2.5rem;
  padding: 0;
  border: 1px solid rgba(65, 244, 207, 0.45);
  border-radius: 50%;
  background: rgba(65, 244, 207, 0.08);
  color: var(--teal);
  display: inline-grid;
  place-items: center;
}

.speak-icon svg {
  width: 1.2rem;
  height: 1.2rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.speak-icon.speaking {
  border-color: var(--rose);
  color: var(--rose);
}

.flash-label {
  color: var(--amber);
  margin: 0.45rem 0 0.3rem;
}

.answer {
  display: grid;
  gap: 0.85rem;
  text-align: left;
}

.answer-row {
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

.answer-row dt {
  color: var(--mint);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.answer-row dd {
  margin: 0.2rem 0 0;
  color: #cde3df;
}

.flash-actions {
  justify-content: center;
  margin-top: 1.2rem;
}

.flash-actions button {
  min-width: 8.5rem;
}

.flash-actions .nav-arrow {
  min-width: 3.4rem;
  font-size: 1.35rem;
}

.match-board {
  display: grid;
  grid-template-columns: minmax(16rem, 0.9fr) minmax(18rem, 1.35fr);
  gap: 1rem;
  margin-top: 1rem;
  align-items: start;
}

.match-column,
.match-answer-bank,
.match-drop-card {
  padding: 0.8rem;
}

.match-answer-bank {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(13, 26, 24, 0.82);
  min-height: 5rem;
  position: sticky;
  top: 1rem;
  max-height: calc(100vh - 2rem);
  overflow: auto;
}

.match-drug-list {
  display: grid;
  gap: 0.8rem;
}

.match-bank-head {
  margin-bottom: 0.55rem;
}

.match-bank-head small {
  display: block;
  color: var(--muted);
  margin-top: 0.2rem;
}

.match-drop-card {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(13, 26, 24, 0.82);
}

.match-drop-card h3 {
  margin: 0;
}

.match-drop-card p {
  color: var(--muted);
  margin-top: 0.2rem;
}

.match-item {
  width: 100%;
  margin: 0.3rem 0;
  padding: 0.62rem 0.7rem;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #091514;
  color: var(--text);
  line-height: 1.28;
  font-size: 0.95rem;
}

.match-answer-bank .match-item {
  cursor: grab;
}

.match-drop-zone {
  display: grid;
  align-items: center;
  min-height: 3.6rem;
  margin-top: 0.75rem;
  padding: 0.65rem;
  border: 1px dashed rgba(65, 244, 207, 0.42);
  border-radius: 0.45rem;
  color: var(--muted);
  background: rgba(7, 19, 17, 0.62);
}

.match-item.selected {
  border-color: var(--teal);
}

.match-item.correct,
.match-drop-zone.correct {
  border-color: var(--mint);
  color: var(--mint);
}

.match-item.wrong,
.match-drop-zone.wrong {
  border-color: var(--rose);
  color: var(--rose);
}

.rank-prompt,
.feedback {
  color: var(--muted);
  margin-top: 0.75rem;
}

.rank-header {
  margin-top: 1rem;
  padding: 1rem;
  border-left: 4px solid var(--teal);
  background: rgba(65, 244, 207, 0.06);
}

.rank-header h3 {
  margin: 0.15rem 0;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  line-height: 1;
}

.rank-control-row {
  margin: 1rem 0 0.75rem;
}

.rank-header p:not(.eyebrow) {
  color: var(--muted);
}

.rank-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
  padding-left: 1.4rem;
}

.rank-list li {
  padding: 0.9rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: center;
  cursor: grab;
  user-select: none;
  touch-action: none;
  transition: border-color 160ms ease, opacity 160ms ease, transform 160ms ease;
}

.rank-list li:active {
  cursor: grabbing;
}

.rank-list li.dragging {
  opacity: 0.48;
  border-color: var(--teal);
  transform: scale(0.99);
}

.drag-handle {
  color: var(--teal);
  font-weight: 800;
  letter-spacing: 0.08em;
}

.review-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 0.25rem;
}

.review-card,
.result-card {
  padding: 1rem;
}

.review-card.pinned {
  border-color: var(--amber);
}

.review-card header,
.result-card header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.review-card h3,
.result-card h3 {
  margin: 0;
}

.review-card p,
.result-card p {
  margin-top: 0.7rem;
  color: #cde3df;
}

.review-record-button {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 0;
  text-align: left;
}

.review-record-button strong,
.review-record-button small {
  display: block;
}

.review-record-button small {
  color: var(--muted);
  margin-top: 0.25rem;
}

.redo-check {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--mint);
  white-space: nowrap;
}

.review-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.pin-button {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  min-height: 2.1rem;
  padding: 0 0.75rem;
}

.pin-button.active {
  border-color: var(--amber);
  color: var(--amber);
}

.record-remove-button {
  width: 2.1rem;
  min-height: 2.1rem;
  border: 1px solid rgba(255, 102, 128, 0.6);
  border-radius: 0.45rem;
  background: rgba(255, 102, 128, 0.08);
  color: var(--rose);
}

.redo-check input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--teal);
}

.review-detail {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.6rem;
  border-top: 1px solid var(--line);
  padding-top: 0.6rem;
}

.review-detail section {
  border-left: 3px solid var(--teal);
  padding-left: 0.8rem;
}

.result-box {
  margin-top: 1rem;
}

.result-card dl {
  display: grid;
  gap: 0.7rem;
  margin: 0.9rem 0;
}

.result-card dt {
  color: var(--mint);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.result-card dd {
  margin: 0.2rem 0 0;
  color: #cde3df;
}

.review-answer {
  color: var(--mint) !important;
}

.phone-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) minmax(18rem, 28rem);
  gap: 1rem;
  margin-top: 1rem;
  align-items: start;
}

.phone-picker,
.phone-preview-panel {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(13, 26, 24, 0.72);
  padding: 1rem;
}

.phone-drug-picker {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
}

.phone-class-group {
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  overflow: hidden;
}

.phone-class-toggle {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 2.8rem;
  padding: 0 0.85rem;
  border: 0;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  text-align: left;
}

.phone-class-toggle small {
  color: var(--muted);
}

.phone-class-drugs {
  display: grid;
  gap: 0.55rem;
  padding: 0.65rem;
  border-top: 1px solid var(--line);
}

.phone-drug-option {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.65rem;
  align-items: center;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
}

.phone-drug-option input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--teal);
}

.phone-drug-option strong,
.phone-drug-option small {
  display: block;
}

.phone-drug-option small {
  color: var(--muted);
  margin-top: 0.15rem;
}

.phone-preview-panel canvas {
  display: block;
  width: min(100%, 18rem);
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  box-shadow: var(--shadow);
}

dialog {
  width: min(48rem, calc(100vw - 2rem));
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: var(--panel);
  color: var(--text);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.72);
}

.modal-head,
.modal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 1rem 0;
}

.form-grid label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
}

.form-grid b {
  color: var(--rose);
}

.wide {
  grid-column: 1 / -1;
}

@media (max-width: 820px) {
  .app-shell {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-tabs {
    grid-template-columns: repeat(auto-fit, minmax(7rem, 1fr));
  }

  .nav-tab {
    text-align: center;
    padding: 0;
  }

  .topbar,
  .section-head,
  .visual-band {
    display: grid;
  }

  .visual-band,
  .match-board,
  .match-search-row,
  .phone-layout,
  .flash-settings,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .search-wrap {
    width: 100%;
  }
}

@media (max-width: 520px) {
  main,
  .sidebar {
    padding: 1rem;
  }

  .nav-tabs {
    grid-template-columns: 1fr 1fr;
  }

  .drug-library {
    grid-template-columns: 1fr;
  }
}