:root {
  color-scheme: light;
  --verbi-red: #a6362a;
  --verbi-red-deep: #731d19;
  --verbi-coral: #e94f1d;
  --page-bg: #f8f1ed;
  --page-glow: rgba(166, 54, 42, 0.08);
  --page-start: #fff8f4;
  --page-end: #f4e5df;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --surface-soft: rgba(166, 54, 42, 0.08);
  --text: #371714;
  --muted: #7b5a55;
  --border: rgba(166, 54, 42, 0.18);
  --shadow: 0 18px 44px rgba(82, 34, 28, 0.12);
  --content-width: min(92vw, 1180px);
  --good: #2d7438;
  --good-bg: rgba(45, 116, 56, 0.12);
  --bad: #a6362a;
  --bad-bg: rgba(166, 54, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page-bg);
}

body {
  min-height: 100svh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 0%, var(--page-glow), transparent 28%),
    linear-gradient(180deg, var(--page-start) 0%, var(--page-bg) 46%, var(--page-end) 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: background 0.4s ease, color 0.4s ease;
}

#canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

body.dark-mode {
  --page-bg: #1f0b0a;
  --page-glow: rgba(233, 79, 29, 0.16);
  --page-start: #35100d;
  --page-end: #120504;
  --surface: rgba(54, 18, 16, 0.88);
  --surface-strong: #3a1210;
  --surface-soft: rgba(255, 248, 240, 0.07);
  --text: #fff4ec;
  --muted: #d9bbb1;
  --border: rgba(255, 221, 170, 0.18);
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
  --good: #b6f0bf;
  --good-bg: rgba(182, 240, 191, 0.12);
  --bad: #ffc0b6;
  --bad-bg: rgba(255, 192, 182, 0.12);
  --verbi-coral: #f07646;
}

button,
input,
a {
  font: inherit;
}

button {
  cursor: pointer;
}

.page {
  position: relative;
  z-index: 1;
  width: var(--content-width);
  margin: 0 auto;
  padding: clamp(18px, 4vh, 34px) 0 28px;
}

.topbar {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 44px 44px;
  align-items: center;
  gap: 14px;
  margin-bottom: clamp(20px, 4vh, 34px);
}

.icon-button,
.mode-button,
.skin-button,
.qr-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--verbi-red);
  box-shadow: 0 10px 24px rgba(82, 34, 28, 0.08);
  text-decoration: none;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.icon-button:hover,
.mode-button:hover,
.skin-button:hover,
.qr-toggle:hover {
  transform: translateY(-1px);
  background: var(--verbi-red);
  color: #fff8f4;
  border-color: rgba(166, 54, 42, 0.28);
}

.icon-button:focus-visible,
.mode-button:focus-visible,
.skin-button:focus-visible,
.qr-toggle:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid rgba(166, 54, 42, 0.45);
  outline-offset: 3px;
}

.home-icon {
  width: 19px;
  height: 19px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11.5L12 4l9 7.5'/%3E%3Cpath d='M5.5 10.5V20h13v-9.5'/%3E%3Cpath d='M9.5 20v-6h5v6'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11.5L12 4l9 7.5'/%3E%3Cpath d='M5.5 10.5V20h13v-9.5'/%3E%3Cpath d='M9.5 20v-6h5v6'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
}

.mode-button {
  justify-self: end;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  text-shadow: 0.35px 0 currentColor, -0.35px 0 currentColor;
}

.skin-button {
  justify-self: end;
  position: relative;
  overflow: hidden;
  color: var(--verbi-red);
  font-size: 17px;
  font-weight: 900;
}

.skin-button::before {
  content: "";
  position: absolute;
  width: 25px;
  height: 25px;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
  -webkit-mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='black' d='M21.8 2.8c1.4 0 3 1.3 5 3.3 2.2 2.2 2.8 3.9 2.1 5.7l-1.6 4.3c-.7 1.8-2.4 2.8-4.3 2.8h-1.8l-8.9 8.9c-2.7 2.7-6.8 2.8-9.1.5-2.2-2.2-1.9-5.9.8-8.6l8.9-8.9V9c0-1.9 1.1-3.7 2.9-4.4l4.2-1.6c.6-.2 1.2-.3 1.8-.2ZM8 21.9c-1.6 1.6-1.9 3.6-.8 4.7 1.1 1.1 3.3.8 4.8-.7l6.6-6.6-4-4L8 21.9Zm10-13.7c-.7.3-1.1.9-1.1 1.6v1.4l4.7 4.7H23c.7 0 1.3-.4 1.6-1.1l1.4-3.8-4.2 2.1-4.1-4.1.3-.8Z'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='black' d='M21.8 2.8c1.4 0 3 1.3 5 3.3 2.2 2.2 2.8 3.9 2.1 5.7l-1.6 4.3c-.7 1.8-2.4 2.8-4.3 2.8h-1.8l-8.9 8.9c-2.7 2.7-6.8 2.8-9.1.5-2.2-2.2-1.9-5.9.8-8.6l8.9-8.9V9c0-1.9 1.1-3.7 2.9-4.4l4.2-1.6c.6-.2 1.2-.3 1.8-.2ZM8 21.9c-1.6 1.6-1.9 3.6-.8 4.7 1.1 1.1 3.3.8 4.8-.7l6.6-6.6-4-4L8 21.9Zm10-13.7c-.7.3-1.1.9-1.1 1.6v1.4l4.7 4.7H23c.7 0 1.3-.4 1.6-1.1l1.4-3.8-4.2 2.1-4.1-4.1.3-.8Z'/%3E%3C/svg%3E") center / contain no-repeat;
}

.settings-toggle {
  display: none;
}

.qr-toggle {
  justify-self: center;
  margin: 0;
}

.qr-toggle::before {
  content: "";
  width: 18px;
  height: 18px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='18' height='18' viewBox='0 0 18 18' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='black'%3E%3Cpath d='M1 1h6v6H1zM3 3v2h2V3zM11 1h6v6h-6zM13 3v2h2V3zM1 11h6v6H1zM3 13v2h2v-2zM9 9h2v2H9zM12 9h1v2h-1zM15 9h2v2h-2zM9 12h2v1H9zM12 12h5v2h-2v1h2v2h-3v-2h-2zM9 14h2v3H9z'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg width='18' height='18' viewBox='0 0 18 18' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='black'%3E%3Cpath d='M1 1h6v6H1zM3 3v2h2V3zM11 1h6v6h-6zM13 3v2h2V3zM1 11h6v6H1zM3 13v2h2v-2zM9 9h2v2H9zM12 9h1v2h-1zM15 9h2v2h-2zM9 12h2v1H9zM12 12h5v2h-2v1h2v2h-3v-2h-2zM9 14h2v3H9z'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
}

.qr-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: var(--qr-panel-left, 50%);
  z-index: 60;
  width: min(330px, 86vw);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translate(-50%, -6px);
  transition:
    max-height 0.3s ease,
    opacity 0.22s ease,
    transform 0.26s ease;
}

.topbar.qr-open .qr-panel {
  max-height: 460px;
  overflow: visible;
  opacity: 1;
  transform: translate(-50%, 0);
}

.qr-card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: none;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.qr-card img {
  display: block;
  width: min(100%, 270px);
  height: auto;
  margin: 0 auto 12px;
  border-radius: 18px;
  background: white;
}

.qr-url {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
  overflow-wrap: anywhere;
  text-align: center;
}

.qr-url a {
  color: inherit;
  text-decoration: none;
}

body.dark-mode .qr-toggle,
body.dark-mode .book-picker button.active,
body.dark-mode .lesson-picker button.active,
body.dark-mode .round-stepper,
body.dark-mode .unlimited-button.active,
body.dark-mode .scope-toggle button.active,
body.dark-mode .secondary-button,
body.dark-mode .tense-pill,
body.dark-mode .pool-preview span {
  color: #ffe5df;
}

.hero {
  margin-bottom: 22px;
  text-align: center;
}

.hero h1 {
  display: grid;
  justify-content: center;
  justify-items: center;
  gap: 10px;
  margin: 0;
  color: var(--verbi-red);
  line-height: 1;
  letter-spacing: 0;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.hero-brand {
  display: block;
  font-size: clamp(46px, 8vw, 78px);
  font-weight: 950;
}

.hero-subtitle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 7px 22px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  color: var(--muted);
  box-shadow: 0 10px 24px rgba(82, 34, 28, 0.08);
  font-size: clamp(17px, 2.8vw, 24px);
  font-weight: 850;
  line-height: 1.1;
}

body.dark-mode .hero h1 {
  color: #fff4ec;
}

body.dark-mode .hero-subtitle {
  background: rgba(67, 47, 49, 0.72);
  color: #f3d9d0;
}

.toolbar {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(520px, 1fr) minmax(340px, 0.52fr);
  align-items: stretch;
  gap: 16px;
  padding: clamp(16px, 3vw, 22px);
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 10px 24px rgba(82, 34, 28, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.toolbar:has(.tense-drawer:not(.hidden)) {
  z-index: 40;
}

.field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.round-field {
  grid-column: auto;
}

.lesson-field {
  grid-row: 1 / span 2;
  max-width: 620px;
}

.tense-field,
.round-field {
  align-self: end;
}

.field-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 26px;
}

.control-label,
.label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 9999px;
  outline: none;
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease;
}

body.dark-mode input {
  background: rgba(255, 248, 245, 0.08);
}

input:focus {
  border-color: rgba(166, 54, 42, 0.55);
  box-shadow: 0 0 0 4px rgba(166, 54, 42, 0.12);
}

input[type="checkbox"] {
  width: auto;
  accent-color: var(--verbi-red);
}

.lesson-picker,
.book-picker,
.scope-toggle,
.mode-picker,
.difficulty-picker,
.round-control,
.round-stepper {
  display: grid;
  gap: 5px;
  min-height: 44px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: var(--surface-soft);
}

.lesson-picker {
  grid-template-columns: repeat(8, minmax(0, 1fr));
  border-radius: 22px;
}

.book-picker,
.scope-toggle,
.mode-picker,
.difficulty-picker {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-radius: 9999px;
}

.scope-toggle {
  margin-top: 2px;
}

.round-control {
  position: relative;
  grid-template-columns: minmax(118px, 1fr) minmax(118px, 0.86fr);
  gap: 12px;
}

.round-control::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: calc((100% - 12px) * 0.537);
  width: 1px;
  background: var(--border);
}

.round-stepper {
  grid-template-columns: 36px minmax(38px, 1fr) 36px;
  align-items: center;
  border-radius: 9999px;
  min-height: 36px;
  padding: 0;
  border: 0;
  background: transparent;
}

.book-picker button,
.lesson-picker button,
.scope-toggle button,
.mode-picker button,
.difficulty-picker button,
.round-stepper button,
.round-stepper input,
.unlimited-button {
  min-height: 34px;
  padding: 0 11px;
  border: 0;
  border-radius: 9999px;
  background: transparent;
  color: var(--muted);
  font-weight: 750;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease;
}

.mode-picker button,
.difficulty-picker button,
.hint-button {
  position: relative;
}

.mode-picker button::after,
.difficulty-picker button::after,
.hint-button::after {
  content: attr(data-tip-fr) "\A" attr(data-tip-zh);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  z-index: 300;
  min-width: max-content;
  max-width: 220px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-strong);
  color: var(--text);
  box-shadow: 0 10px 24px rgba(82, 34, 28, 0.14);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.35;
  opacity: 0;
  pointer-events: none;
  text-align: center;
  transform: translate(-50%, 4px);
  transition: opacity 0.16s ease, transform 0.16s ease;
  white-space: pre-line;
}

.mode-picker button:hover::after,
.mode-picker button:focus-visible::after,
.difficulty-picker button:hover::after,
.difficulty-picker button:focus-visible::after,
.hint-button:hover::after,
.hint-button:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

.panel-actions .hint-button::after {
  right: 0;
  left: auto;
  transform: translateY(4px);
}

.panel-actions .hint-button:hover::after,
.panel-actions .hint-button:focus-visible::after {
  transform: translateY(0);
}

.book-picker button:hover,
.lesson-picker button:hover,
.round-stepper button:hover,
.scope-toggle button:hover,
.mode-picker button:hover,
.difficulty-picker button:hover,
.unlimited-button:hover {
  background: rgba(255, 255, 255, 0.48);
}

.book-picker button.active,
.lesson-picker button.active,
.scope-toggle button.active,
.mode-picker button.active,
.difficulty-picker button.active {
  background: var(--surface-strong);
  color: var(--verbi-red);
  box-shadow: 0 1px 3px rgba(82, 34, 28, 0.12);
}

.round-stepper .round-adjust {
  padding: 0;
  font-size: 22px;
  line-height: 1;
}

.round-stepper .round-value {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 34px;
  padding: 0 8px;
  border-radius: 9999px;
  border: 0;
  background: var(--surface-strong);
  color: var(--verbi-red);
  box-shadow: 0 1px 3px rgba(82, 34, 28, 0.12);
  font-weight: 800;
  text-align: center;
  appearance: textfield;
  -moz-appearance: textfield;
}

.round-stepper .round-value[readonly] {
  cursor: pointer;
  caret-color: transparent;
}

.round-stepper .round-value::-webkit-outer-spin-button,
.round-stepper .round-value::-webkit-inner-spin-button {
  margin: 0;
  -webkit-appearance: none;
}

.unlimited-button {
  background: transparent;
}

.round-control.is-unlimited .unlimited-button,
.round-control:not(.is-unlimited) .round-stepper .round-value {
  background: var(--surface-strong);
  color: var(--verbi-red);
  box-shadow: 0 1px 3px rgba(82, 34, 28, 0.12);
}

.round-control.is-unlimited .round-stepper .round-value,
.round-control:not(.is-unlimited) .unlimited-button {
  background: transparent;
  box-shadow: none;
}

.teacher-field {
  grid-row: 3;
  grid-column: 2;
  justify-items: stretch;
}

.difficulty-field {
  grid-row: 3;
  grid-column: 1;
  max-width: 620px;
}

body.teacher-mode .unlimited-button,
body.teacher-mode .prompt-strip,
body.teacher-mode .card,
body.teacher-mode #paradigmPanel,
body.teacher-mode #reviewPanel {
  display: none;
}

body.teacher-mode .exercise {
  grid-template-columns: 1fr;
}

body.teacher-mode .round-control {
  grid-template-columns: 1fr;
}

body.teacher-mode .round-control::before {
  display: none;
}

.tense-selector {
  position: relative;
  z-index: 70;
}

.tense-pill {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 38px;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 48px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: var(--surface-soft);
  color: var(--verbi-red);
  font-weight: 800;
  box-shadow: inset 0 0 0 1px rgba(166, 54, 42, 0.12);
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.tense-pill:hover {
  transform: translateY(-1px);
  background: rgba(166, 54, 42, 0.1);
}

.tense-summary {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.tense-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 30px;
  padding: 4px 9px 4px 12px;
  border-radius: 9999px;
  background: var(--surface-strong);
  box-shadow: 0 1px 3px rgba(82, 34, 28, 0.12);
  color: var(--verbi-red);
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
}

.tense-chip-remove {
  display: inline-flex;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  color: var(--muted);
  opacity: 0.72;
  transition: background-color 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.tense-chip-remove::before {
  content: "";
  width: 100%;
  height: 100%;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='14' height='14' viewBox='0 0 14 14' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.1' stroke-linecap='round'%3E%3Cpath d='M4 4l6 6M10 4l-6 6'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg width='14' height='14' viewBox='0 0 14 14' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='black' stroke-width='2.1' stroke-linecap='round'%3E%3Cpath d='M4 4l6 6M10 4l-6 6'/%3E%3C/g%3E%3C/svg%3E") center / contain no-repeat;
}

.tense-chip:hover .tense-chip-remove {
  background: var(--surface-soft);
  color: var(--verbi-red);
  opacity: 1;
}

.drawer-caret {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  transition: transform 0.22s ease;
}

.drawer-caret::before {
  content: "";
  display: block;
  width: 20px;
  height: 20px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.2 7.6L10 12.4l4.8-4.8' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.2 7.6L10 12.4l4.8-4.8' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}

.tense-pill[aria-expanded="true"] .drawer-caret {
  transform: rotate(180deg);
}

.tense-drawer {
  position: absolute;
  z-index: 200;
  top: calc(100% + 8px);
  right: 0;
  left: 0;
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--surface-strong);
  box-shadow: 0 18px 40px rgba(82, 34, 28, 0.16);
  opacity: 1;
  transform: translateY(0) scale(1);
  transform-origin: top center;
  pointer-events: auto;
  transition:
    opacity 0.18s ease,
    transform 0.18s ease,
    visibility 0.18s ease;
}

.tense-drawer.hidden {
  visibility: hidden;
  opacity: 0;
  transform: translateY(-8px) scale(0.98);
  pointer-events: none;
}

.tense-drawer label {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 16px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.tense-drawer label:hover {
  background: var(--surface-soft);
  transform: translateY(-1px);
}

.tense-drawer label:has(input:checked) {
  border-color: var(--border);
  background: var(--surface-soft);
  color: var(--verbi-red);
}

.tense-drawer input[type="checkbox"] {
  appearance: none;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  margin: 0;
  border: 1.5px solid rgba(123, 90, 85, 0.55);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.5);
}

.tense-drawer input[type="checkbox"]::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--verbi-red);
  transform: scale(0);
  transition: transform 0.14s ease;
}

.tense-drawer input[type="checkbox"]:checked {
  border-color: var(--verbi-red);
  background: var(--surface-strong);
}

.tense-drawer input[type="checkbox"]:checked::before {
  transform: scale(1);
}

.select-all-tenses {
  justify-self: center;
  min-height: 32px;
  margin-top: 2px;
  padding: 0 13px;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: var(--surface-strong);
  color: var(--verbi-red);
  box-shadow: 0 1px 3px rgba(82, 34, 28, 0.12);
  font-size: 12px;
  font-weight: 800;
}

.select-all-tenses:hover {
  background: var(--verbi-red);
  color: #fff8f4;
}

.select-all-tenses:disabled {
  cursor: default;
  opacity: 0.48;
}

.select-all-tenses:disabled:hover {
  background: var(--surface-strong);
  color: var(--verbi-red);
}

.exercise {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(360px, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.prompt-strip {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 12px;
}

.prompt-strip > div,
.card,
.details > div {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 10px 26px rgba(82, 34, 28, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.prompt-strip > div {
  position: relative;
  overflow: hidden;
  padding: 12px 16px;
}

.prompt-strip > div:nth-child(4)::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 4px;
  background:
    linear-gradient(90deg, var(--verbi-red), var(--verbi-coral)) 0 0 / var(--round-progress, 0%) 100% no-repeat,
    transparent;
  opacity: 0.7;
  transition: background-size 0.24s ease;
}

.prompt-strip strong {
  display: block;
  margin-top: 4px;
  font-size: 20px;
}

.card {
  padding: clamp(22px, 4vw, 30px);
  text-align: center;
}

.verb-meta {
  display: grid;
  justify-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

#bookLessonTag {
  justify-self: start;
}

.prompt-tense-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: var(--surface-soft);
  color: var(--verbi-red);
  font-size: 15px;
  font-weight: 800;
}

.prompt-tense-tag.hidden {
  display: none;
}

.verb-heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

h1 {
  margin: 8px 0 0;
  color: var(--verbi-red);
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1;
  letter-spacing: 0;
}

body.dark-mode h1 {
  color: #fff4ec;
}

.verb-marker {
  color: var(--muted);
  font-size: 14px;
  font-style: italic;
  font-weight: 800;
  line-height: 1;
}

.instruction {
  min-height: 0;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.question {
  width: min(100%, 720px);
  margin-right: auto;
  margin-left: auto;
  margin-top: 20px;
}

.answer-hint {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
}

.answer-hint.hidden {
  display: none;
}

#pronounText {
  display: block;
  margin-top: 8px;
  color: var(--verbi-red);
  font-size: clamp(25px, 4vw, 34px);
  font-weight: 800;
}

body.dark-mode #pronounText {
  color: #ffe5df;
}

#answerInput {
  height: 56px;
  padding: 0 18px;
  font-size: 22px;
  line-height: 56px;
  text-align: center;
}

#answerInput::placeholder {
  color: rgba(123, 90, 85, 0.62);
  font-size: 17px;
}

#answerInput.shake {
  animation: answer-shake 0.34s ease-in-out;
  border-color: var(--bad);
}

#answerInput.shake::placeholder {
  color: var(--bad);
}

@keyframes answer-shake {
  0%, 100% {
    transform: translateX(0);
  }

  22% {
    transform: translateX(-7px);
  }

  44% {
    transform: translateX(7px);
  }

  66% {
    transform: translateX(-4px);
  }

  88% {
    transform: translateX(4px);
  }
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  width: min(100%, 720px);
  margin-right: auto;
  margin-left: auto;
  margin-top: 12px;
}

.actions button {
  width: 100%;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 9999px;
  font-weight: 750;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease;
}

.actions button:hover {
  transform: translateY(-1px);
}

.actions button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.actions button.primary {
  border: none;
  background: var(--verbi-red);
  color: #fff8f4;
  box-shadow: 0 12px 28px rgba(166, 54, 42, 0.22);
}

.actions button.primary:hover {
  background: var(--verbi-coral);
}

.actions button.next-mode {
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--verbi-red);
  box-shadow: none;
}

.actions button.next-mode:hover {
  background: var(--surface-soft);
}

.actions button:not(.primary) {
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--verbi-red);
}

.actions button:not(.primary):hover {
  background: var(--surface-soft);
}

.feedback {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 18px;
  line-height: 1.45;
  white-space: pre-line;
}

.feedback:empty {
  display: none;
}

.feedback.neutral {
  background: var(--surface-soft);
  color: var(--verbi-red);
}

.feedback.correct {
  background: var(--good-bg);
  color: var(--good);
}

.feedback.incorrect {
  background: var(--bad-bg);
  color: var(--bad);
}

.round-summary-feedback {
  width: min(100%, 720px);
  margin: 12px auto 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface-soft);
  color: var(--verbi-red);
  font-weight: 750;
  line-height: 1.45;
}

.round-summary-feedback.hidden {
  display: none;
}

.details {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.details > div {
  padding: 18px;
}

.details > div.hidden {
  display: none;
}

h2 {
  margin: 0;
  font-size: 15px;
}

.details h2 {
  margin-bottom: 10px;
}

.panel-heading h2 {
  margin-bottom: 0;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.panel-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.panel-heading button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface-soft);
  color: var(--verbi-red);
  font-size: 20px;
  font-weight: 750;
  line-height: 1;
}

button.review-expand-button {
  display: none;
}

.panel-heading button.active {
  background: var(--verbi-red);
  color: #fff8f4;
}

.panel-heading .eraser-icon {
  width: 15px;
  height: 10px;
}

.list-hint {
  margin: 4px 0 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.paradigm {
  display: grid;
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface-soft);
  font-size: 15px;
}

.paradigm-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  min-height: 38px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  line-height: 1.25;
}

.paradigm-row:last-child {
  border-bottom: 0;
}

.paradigm-row strong {
  color: var(--verbi-red);
}

.pool-preview {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 286px;
  padding: 0 12px 30px 0;
  overflow-y: auto;
  scrollbar-color: rgba(166, 54, 42, 0.45) rgba(166, 54, 42, 0.08);
}

.pool-preview.is-scrollable::after {
  content: "↓";
  position: sticky;
  right: 8px;
  bottom: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface-strong);
  color: var(--verbi-red);
  box-shadow: 0 8px 18px rgba(82, 34, 28, 0.12);
  font-weight: 800;
}

.pool-preview span {
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: var(--surface-soft);
  color: var(--verbi-red);
  font-size: 13px;
}

.review-list {
  position: relative;
  display: grid;
  gap: 8px;
  max-height: 260px;
  overflow: auto;
  padding: 0 12px 30px 0;
}

.review-list.is-scrollable::after {
  content: "↓";
  position: sticky;
  right: 8px;
  bottom: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface-strong);
  color: var(--verbi-red);
  box-shadow: 0 8px 18px rgba(82, 34, 28, 0.12);
  font-weight: 800;
}

.review-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(120px, 0.8fr);
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.review-row strong,
.review-row span,
.review-row small {
  display: block;
}

.review-row strong {
  color: var(--text);
  font-size: 14px;
}

.review-row.correct strong {
  color: var(--good);
}

.review-row.incorrect strong {
  color: var(--bad);
}

.review-row small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.3;
}

.review-row > div:last-child {
  text-align: right;
}

.teacher-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.teacher-panel.hidden {
  display: none;
}

.teacher-section {
  min-width: 0;
  padding: clamp(18px, 3vw, 24px);
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 10px 24px rgba(82, 34, 28, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.teacher-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.teacher-heading h2 {
  margin: 0;
  color: var(--verbi-red);
  font-size: 18px;
}

.teacher-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.teacher-actions button {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: var(--surface-soft);
  color: var(--verbi-red);
  font-weight: 800;
}

.teacher-output {
  min-height: 360px;
  margin: 0;
  padding: 16px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.52);
  color: var(--text);
  font: 16px/1.8 ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  white-space: pre-wrap;
}

body.dark-mode .teacher-output {
  background: rgba(255, 248, 245, 0.08);
}

.site-footer {
  position: relative;
  z-index: 90;
  display: grid;
  justify-items: center;
  gap: 12px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer hr {
  width: min(100%, 520px);
  margin: 0 auto 2px;
  border: none;
  border-top: 1px solid var(--border);
}

.footer-actions {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.eraser-icon {
  position: relative;
  width: 16px;
  height: 11px;
  transform: rotate(-32deg);
}

.eraser-icon::before,
.eraser-icon::after {
  content: "";
  position: absolute;
  top: 1.5px;
  height: 8px;
  border: 1.8px solid currentColor;
  background: transparent;
}

.eraser-icon::before {
  left: 0;
  width: 8px;
  border-radius: 3px 0 0 3px;
}

.eraser-icon::after {
  right: 0;
  width: 6px;
  border-left: 0;
  border-radius: 0 3px 3px 0;
}

@media (max-width: 920px) {
  .toolbar,
  .exercise,
  .teacher-panel {
    grid-template-columns: 1fr;
  }

  .lesson-field,
  .tense-field,
  .round-field,
  .difficulty-field,
  .teacher-field {
    grid-column: auto;
    grid-row: auto;
    max-width: none;
  }

  .lesson-field,
  .question,
  .actions {
    grid-row: auto;
    width: 100%;
    max-width: none;
  }

  .prompt-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 560px) {
  .topbar {
    gap: 10px;
  }

  .hero h1 {
    font-size: clamp(34px, 12vw, 46px);
  }

  .hero-brand {
    font-size: clamp(40px, 13vw, 54px);
  }

  .hero-subtitle {
    min-height: 34px;
    padding: 6px 18px 7px;
    font-size: clamp(15px, 5vw, 20px);
  }

  .field-heading {
    display: grid;
    gap: 8px;
  }

  .prompt-strip {
    position: sticky;
    top: max(8px, env(safe-area-inset-top));
    z-index: 85;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .prompt-strip > div {
    padding: 10px 12px;
  }

  .prompt-strip strong {
    font-size: 18px;
  }

  .review-row {
    grid-template-columns: 1fr;
  }

  .lesson-picker {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }

  .round-control {
    grid-template-columns: 1fr 1fr;
  }

  .round-control::before {
    left: 50%;
  }

  .pool-preview {
    max-height: 228px;
  }

  .review-row > div:last-child {
    text-align: left;
  }

  .toolbar,
  .card,
  .details > div,
  .prompt-strip > div {
    border-radius: 20px;
  }

  .actions button {
    width: 100%;
  }
}

/* Metro skin draft: same app, different presentation. */
body.metro-skin {
  --metro-cream: #fff7e6;
  --metro-paper: #fffdf4;
  --metro-ink: #171717;
  --metro-muted: #665d4e;
  --metro-red: #e23b32;
  --metro-cyan: #00a8c8;
  --metro-green: #25a35a;
  --metro-yellow: #f2c438;
  --metro-violet: #7c55d9;
  --metro-coral: #ff6f52;
  --metro-blue-soft: #d8efff;
  --metro-panel-height: 760px;
  color: var(--metro-ink);
  background:
    linear-gradient(90deg, rgba(23, 23, 23, 0.035) 1px, transparent 1px) 0 0 / 34px 34px,
    linear-gradient(180deg, #fffaf0 0%, var(--metro-cream) 48%, #f8e8bd 100%);
}

body.metro-skin #canvas {
  display: none;
}

body.metro-skin .page {
  width: min(1440px, 94vw);
  padding-top: 20px;
}

body.metro-skin .topbar {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 48px;
  gap: 14px;
  margin-bottom: 18px;
}

body.metro-skin .icon-button,
body.metro-skin .qr-toggle,
body.metro-skin .skin-button,
body.metro-skin .mode-button {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 3px solid var(--metro-ink);
  border-radius: 50%;
  background: var(--metro-paper);
  color: var(--metro-ink);
  box-shadow: none;
  font-size: 18px;
  font-weight: 950;
  text-decoration: none;
}

body.metro-skin .skin-button {
  justify-self: end;
  position: relative;
  overflow: hidden;
  background: var(--metro-paper);
  color: var(--metro-ink);
}

body.metro-skin .skin-button::before {
  width: 30px;
  height: 30px;
}

body.metro-skin .mode-button {
  display: none;
}

body.metro-skin .icon-button:hover,
body.metro-skin .qr-toggle:hover,
body.metro-skin .skin-button:hover,
body.metro-skin .mode-button:hover {
  transform: none;
  background: var(--metro-cyan);
  color: white;
  border-color: var(--metro-ink);
}

body.metro-skin .qr-panel {
  left: var(--qr-panel-left, 50%);
  right: auto;
  transform: translate(-50%, -6px);
}

body.metro-skin .topbar.qr-open .qr-panel {
  transform: translate(-50%, 0);
}

body.metro-skin .qr-card {
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  box-shadow: none;
}

body.metro-skin .app {
  display: grid;
  grid-template-columns: minmax(220px, 0.62fr) minmax(0, 2.4fr);
  grid-template-areas:
    "hero hero"
    "settings-toggle settings-toggle"
    "toolbar exercise"
    "teacher teacher";
  gap: 18px;
}

body.metro-skin.teacher-mode .app {
  grid-template-columns: minmax(220px, 0.62fr) repeat(2, minmax(0, 1fr));
  grid-template-areas:
    "hero hero hero"
    "settings-toggle settings-toggle settings-toggle"
    "toolbar teacher teacher";
}

body.metro-skin .hero {
  grid-area: hero;
  position: relative;
  margin: 0;
  padding: 10px 18px;
  border: 4px solid var(--metro-ink);
  background: var(--metro-paper);
  box-shadow: none;
  text-align: left;
}

body.metro-skin .hero h1 {
  display: grid;
  gap: 4px;
  position: relative;
  text-align: center;
  color: var(--metro-ink);
  font-weight: 950;
}

body.metro-skin .hero-brand {
  font-size: clamp(36px, 4.3vw, 54px);
}

body.metro-skin .hero-subtitle {
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--metro-muted);
  font-size: clamp(16px, 1.8vw, 22px);
  font-weight: 850;
}

body.metro-skin .hero h1::before {
  content: "Verbi.us";
  position: absolute;
  left: 0;
  top: 50%;
  margin-right: 0;
  transform: translateY(-50%);
  font-size: clamp(20px, 2.2vw, 28px);
  line-height: 1;
}

body.metro-skin .toolbar {
  grid-area: toolbar;
  display: block;
  height: var(--metro-panel-height);
  margin: 0;
  padding: 14px;
  overflow: visible;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  box-shadow: none;
}

body.metro-skin .toolbar::after {
  display: none;
  content: none;
}

body.metro-skin .toolbar::before,
body.metro-skin .field::before,
body.metro-skin .field::after,
body.metro-skin .book-picker::before,
body.metro-skin .book-picker::after,
body.metro-skin .lesson-picker::before,
body.metro-skin .lesson-picker::after,
body.metro-skin .scope-toggle::before,
body.metro-skin .scope-toggle::after,
body.metro-skin .round-control::before,
body.metro-skin .round-control::after,
body.metro-skin .difficulty-picker::before,
body.metro-skin .difficulty-picker::after,
body.metro-skin .mode-picker::before,
body.metro-skin .mode-picker::after {
  display: none;
  content: none;
}

body.metro-skin .settings-toggle {
  grid-area: settings-toggle;
  display: none;
  min-height: 48px;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-yellow);
  color: var(--metro-ink);
  box-shadow: none;
  font-weight: 950;
}

body.metro-skin .settings-toggle::after {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  margin-left: 10px;
  background: currentColor;
  line-height: 1;
  vertical-align: -4px;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.2 7.6L10 12.4l4.8-4.8' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.2 7.6L10 12.4l4.8-4.8' fill='none' stroke='black' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  transition: transform 0.22s ease;
}

body.metro-skin.settings-collapsed .settings-toggle::after {
  transform: rotate(-90deg);
}

body.metro-skin .field {
  display: grid;
  gap: 7px;
  margin: 0 0 10px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

body.metro-skin .control-label {
  color: var(--metro-ink);
  font-size: 13px;
  font-weight: 950;
  line-height: 1;
  text-transform: uppercase;
}

body.metro-skin .field-heading {
  display: block;
}

body.metro-skin .book-picker,
body.metro-skin .scope-toggle,
body.metro-skin .difficulty-picker,
body.metro-skin .mode-picker,
body.metro-skin .round-control {
  display: grid;
  gap: 7px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

body.metro-skin .book-picker,
body.metro-skin .scope-toggle,
body.metro-skin .mode-picker {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

body.metro-skin .difficulty-picker,
body.metro-skin .round-control {
  grid-template-columns: 1fr;
}

body.metro-skin .difficulty-picker {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

body.metro-skin .lesson-field,
body.metro-skin .tense-field,
body.metro-skin .round-field,
body.metro-skin .difficulty-field,
body.metro-skin .teacher-field {
  border-radius: 0;
}

body.metro-skin .lesson-picker {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-height: none;
  overflow: visible;
  padding-right: 3px;
  border: 0;
  background: transparent;
  box-shadow: none;
}

body.metro-skin .lesson-picker.is-scrollable::after {
  display: none;
}

body.metro-skin .book-picker button,
body.metro-skin .lesson-picker button,
body.metro-skin .scope-toggle button,
body.metro-skin .difficulty-picker button,
body.metro-skin .mode-picker button,
body.metro-skin .round-adjust,
body.metro-skin .unlimited-button,
body.metro-skin .select-all-tenses,
body.metro-skin .teacher-actions button {
  min-height: 34px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: #fff6d8;
  color: var(--metro-ink);
  box-shadow: none;
  font-size: 13px;
  font-weight: 950;
}

body.metro-skin button,
body.metro-skin input,
body.metro-skin .book-picker,
body.metro-skin .lesson-picker,
body.metro-skin .scope-toggle,
body.metro-skin .difficulty-picker,
body.metro-skin .mode-picker,
body.metro-skin .round-stepper,
body.metro-skin .round-control,
body.metro-skin .tense-selector,
body.metro-skin .tense-pill,
body.metro-skin .tense-chip {
  border-radius: 0;
}

body.metro-skin .book-picker button.active,
body.metro-skin .lesson-picker button.active,
body.metro-skin .scope-toggle button.active,
body.metro-skin .difficulty-picker button.active,
body.metro-skin .mode-picker button.active,
body.metro-skin .unlimited-button.active {
  background: var(--metro-yellow);
  color: var(--metro-ink);
}

body.metro-skin .round-control.is-unlimited .unlimited-button {
  background: var(--metro-yellow);
  color: var(--metro-ink);
  box-shadow: none;
}

body.metro-skin .round-control:not(.is-unlimited) .unlimited-button {
  background: #fff6d8;
  color: var(--metro-ink);
  box-shadow: none;
}

body.metro-skin .unlimited-button {
  min-height: 34px;
  border: 3px solid var(--metro-ink);
  background: #fff6d8;
  color: var(--metro-ink);
  box-shadow: none;
}

body.metro-skin .round-stepper {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

body.metro-skin .round-adjust {
  background: var(--metro-yellow);
}

body.metro-skin .round-control.is-unlimited .round-stepper .round-value,
body.metro-skin .round-control.is-unlimited .round-adjust {
  background: #fff6d8;
  color: var(--metro-ink);
}

body.metro-skin .round-control:not(.is-unlimited) .round-stepper .round-value {
  background: var(--metro-yellow);
  color: var(--metro-ink);
}

body.metro-skin .round-adjust:focus-visible,
body.metro-skin .round-value:focus-visible,
body.metro-skin .unlimited-button:focus-visible {
  outline: 0;
  background: var(--metro-yellow);
  box-shadow: none;
}

body.metro-skin .round-value {
  min-width: 0;
  height: 34px;
  border: 3px solid var(--metro-ink);
  border-right: 0;
  border-left: 0;
  border-radius: 0;
  background: var(--metro-yellow);
  color: var(--metro-ink);
  font-weight: 950;
  text-align: center;
}

body.metro-skin .round-control::before {
  display: none;
}

body.metro-skin .tense-field {
  position: relative;
}

body.metro-skin .tense-pill {
  min-height: 38px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 20px;
  gap: 2px;
  padding: 5px 5px 5px 7px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-cyan);
  color: white;
  box-shadow: none;
}

body.metro-skin .tense-summary {
  align-items: center;
  justify-content: start;
  gap: 3px;
}

body.metro-skin .tense-chip {
  min-height: 20px;
  padding: 2px 5px;
  border: 2px solid rgba(255, 255, 255, 0.72);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.12);
  color: inherit;
  box-shadow: none;
  font-size: 10.5px;
  gap: 3px;
}

body.metro-skin .tense-chip-remove {
  width: 11px;
  height: 11px;
}

body.metro-skin .tense-drawer {
  max-height: none;
  overflow-y: visible;
  gap: 3px;
  padding: 7px;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  box-shadow: none;
}

body.metro-skin .tense-drawer label {
  min-height: 26px;
  padding: 3px 6px;
  border: 2px solid var(--metro-ink);
  border-radius: 0;
  background: #fff6d8;
  color: var(--metro-ink);
  font-size: 12px;
  font-weight: 900;
  box-shadow: none;
}

body.metro-skin .tense-drawer label:has(input:checked) {
  background: var(--metro-yellow);
}

body.metro-skin .tense-drawer input[type="checkbox"] {
  width: 16px;
  height: 16px;
  border-radius: 0;
}

body.metro-skin .exercise {
  grid-area: exercise;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(310px, 0.62fr);
  grid-template-rows: auto 408px 1fr;
  gap: 18px;
  height: var(--metro-panel-height);
  margin: 0;
}

body.metro-skin .prompt-strip {
  grid-column: 1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border: 4px solid var(--metro-ink);
  border-bottom: 0;
  background: var(--metro-ink);
  color: var(--metro-paper);
}

body.metro-skin .prompt-strip > div {
  min-height: 48px;
  padding: 10px 12px;
  border: 0;
  border-right: 3px solid rgba(255, 253, 244, 0.28);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  text-align: center;
  align-content: center;
}

body.metro-skin .prompt-strip > div > * {
  align-self: center;
}

body.metro-skin .prompt-strip > div:last-child {
  border-right: 0;
}

body.metro-skin .prompt-strip > div:nth-child(4)::after {
  height: 5px;
  background:
    linear-gradient(90deg, var(--metro-yellow), var(--metro-cyan)) 0 0 / var(--round-progress, 0%) 100% no-repeat,
    transparent;
}

body.metro-skin .label {
  color: var(--metro-paper);
  font-size: 0;
}

body.metro-skin .prompt-strip > div:nth-child(1) .label::before {
  content: "Verbes";
}

body.metro-skin .prompt-strip > div:nth-child(2) .label::before {
  content: "Score";
}

body.metro-skin .prompt-strip > div:nth-child(3) .label::before {
  content: "Série";
}

body.metro-skin .prompt-strip > div:nth-child(4) .label::before {
  content: "Progression";
}

body.metro-skin .label::before {
  font-size: 12px;
  font-weight: 850;
}

body.metro-skin .prompt-strip strong {
  margin-top: 2px;
  color: var(--metro-yellow);
  font-size: 15px;
  font-weight: 950;
}

body.metro-skin .card {
  grid-column: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto auto auto auto auto;
  grid-template-areas:
    "meta"
    "verb"
    "question"
    "feedback"
    "actions"
    "summary";
  gap: 10px;
  min-height: 0;
  padding: 24px 30px 20px;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  box-shadow: none;
  text-align: left;
}

body.metro-skin .verb-meta {
  grid-area: meta;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  color: var(--metro-ink);
  justify-self: start;
}

body.metro-skin #bookLessonTag {
  display: none;
}

body.metro-skin .prompt-tense-tag {
  min-height: 44px;
  padding: 8px 14px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-cyan);
  color: white;
  box-shadow: none;
  font-size: 14px;
  font-weight: 950;
  text-transform: uppercase;
}

body.metro-skin .verb-heading {
  grid-area: verb;
  display: grid;
  gap: 2px;
  align-content: start;
  justify-items: center;
}

body.metro-skin h1,
body.metro-skin.dark-mode h1 {
  margin: 0;
  color: var(--metro-ink);
  font-size: clamp(42px, 4.7vw, 64px);
  font-weight: 950;
  line-height: 1;
  letter-spacing: 0;
  white-space: nowrap;
}

body.metro-skin .verb-marker {
  min-height: 44px;
  padding: 8px 10px;
  border: 3px solid var(--metro-ink);
  background: #e5f7db;
  color: var(--metro-ink);
  box-shadow: none;
  font-size: 14px;
  font-style: italic;
  font-weight: 950;
  line-height: 22px;
  text-transform: lowercase;
}

body.metro-skin #pronounText {
  display: block;
  align-self: start;
  justify-self: center;
  margin: 0;
  width: 100%;
  color: var(--metro-muted);
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 950;
  line-height: 1.15;
  text-align: center;
}

body.metro-skin #pronounText::before {
  content: none;
}

body.metro-skin .question {
  grid-area: question;
  width: 100%;
  margin: 0;
}

body.metro-skin #answerInput {
  width: 100%;
  height: 54px;
  padding: 0 18px;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: white;
  color: var(--metro-ink);
  box-shadow: none;
  font-size: clamp(24px, 3.1vw, 36px);
  font-weight: 950;
  line-height: 46px;
  text-align: left;
  outline: 0;
  -webkit-tap-highlight-color: transparent;
}

body.metro-skin #answerInput:focus {
  outline: 0;
  border-color: var(--metro-ink);
  background: #fffbdc;
}

body.metro-skin .answer-hint {
  margin-top: 6px;
  color: var(--metro-muted);
  font-size: 13px;
  font-weight: 950;
  text-transform: uppercase;
}

body.metro-skin .answer-hint.hidden {
  display: block;
  visibility: hidden;
}

body.metro-skin .feedback {
  grid-area: feedback;
  display: flex;
  align-items: center;
  min-height: 42px;
  height: auto;
  margin: 0;
  padding: 12px 14px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: #fff6d8;
  color: var(--metro-ink);
  box-shadow: none;
  font-weight: 900;
  line-height: 20px;
  overflow: hidden;
  visibility: visible;
}

body.metro-skin .feedback:empty {
  opacity: 0;
  visibility: hidden;
}

body.metro-skin .feedback.correct {
  background: #dff6d2;
}

body.metro-skin .feedback.incorrect {
  background: #ffd6ca;
}

body.metro-skin .actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  justify-content: stretch;
  height: auto;
  min-height: 42px;
}

body.metro-skin .actions .primary,
body.metro-skin .actions button,
body.metro-skin .primary,
body.metro-skin .next-mode {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  width: 100%;
  min-height: 42px;
  height: 42px;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-red);
  color: white;
  box-shadow: none;
  font-weight: 950;
}

body.metro-skin .round-summary-feedback {
  position: fixed;
  inset: auto auto clamp(28px, 7vh, 72px) 50%;
  z-index: 890;
  box-sizing: border-box;
  width: min(560px, calc(100vw - 40px));
  margin: 0;
  padding: 16px 18px;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: #fff6d8;
  color: var(--metro-red);
  box-shadow: none;
  font-size: clamp(18px, 2.4vw, 28px);
  font-weight: 950;
  line-height: 1.15;
  text-align: center;
  overflow-wrap: anywhere;
  pointer-events: none;
  transform: translateX(-50%);
}

body.metro-skin .details {
  display: contents;
}

body.metro-skin .details > div {
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  box-shadow: none;
}

body.metro-skin #paradigmPanel {
  display: block;
  grid-column: 2;
  grid-row: 1 / span 2;
  min-height: 0;
  padding: 14px 16px;
  overflow: hidden;
}

body.metro-skin #paradigmPanel.hidden {
  display: block;
}

body.metro-skin #paradigmPanel.hidden > * {
  visibility: hidden;
}

body.metro-skin #paradigmPanel h2,
body.metro-skin #reviewPanel h2,
body.metro-skin .details > div:last-child h2 {
  padding-bottom: 9px;
  border-bottom: 4px solid var(--metro-ink);
  color: var(--metro-ink);
  font-size: 20px;
  font-weight: 950;
}

body.metro-skin #paradigmPanel h2 span,
body.metro-skin #reviewPanel h2 span,
body.metro-skin .details > div:last-child h2 span {
  display: block;
}

body.metro-skin .paradigm {
  display: grid;
  gap: 4px;
  max-height: none;
  overflow: visible;
  padding: 0;
}

body.metro-skin .paradigm-row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  min-height: 30px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: white;
  box-shadow: none;
}

body.metro-skin .paradigm-row strong {
  display: grid;
  place-items: center;
  border-right: 3px solid var(--metro-ink);
  background: white;
  color: var(--metro-red-deep, #a6362a);
}

body.metro-skin .paradigm-row span {
  align-self: center;
  padding: 4px 8px;
  font-size: 13px;
  font-weight: 900;
}

body.metro-skin #reviewPanel {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  grid-column: 2;
  grid-row: 3;
  min-height: 0;
  padding: 14px;
  overflow: hidden;
}

body.metro-skin .panel-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
}

body.metro-skin .panel-heading h2 {
  min-width: 0;
  overflow-wrap: anywhere;
}

body.metro-skin .panel-actions {
  display: grid;
  grid-template-columns: repeat(4, 34px);
  gap: 8px;
}

body.metro-skin .review-expand-button {
  display: grid;
}

body.metro-skin #reviewPanel.hidden {
  display: block;
}

body.metro-skin #reviewSummary {
  margin: 8px 0;
  color: var(--metro-muted);
  font-weight: 850;
}

body.metro-skin .review-list {
  position: relative;
  display: grid;
  gap: 8px;
  min-height: 0;
  max-height: min(220px, 28vh);
  overflow-y: auto;
  padding: 0 5px 28px 0;
}

body.metro-skin .review-backdrop {
  display: none;
}

body.metro-skin.review-expanded {
  overflow: hidden;
}

body.metro-skin.review-expanded .review-backdrop {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: block;
  background: rgba(23, 23, 23, 0.42);
  pointer-events: none;
}

body.metro-skin.review-expanded .exercise {
  z-index: 901;
}

body.metro-skin.review-expanded .exercise > :not(.details),
body.metro-skin.review-expanded .details > :not(#reviewPanel) {
  filter: brightness(0.62);
}

body.metro-skin.review-expanded #reviewPanel {
  position: fixed;
  inset: 50% auto auto 50%;
  z-index: 902;
  grid-template-rows: auto auto minmax(0, 1fr);
  width: min(820px, calc(100vw - 80px));
  max-height: min(680px, calc(100vh - 80px));
  min-height: min(520px, calc(100vh - 80px));
  padding: 22px;
  transform: translate(-50%, -50%);
}

body.metro-skin.review-expanded #reviewPanel .review-list {
  max-height: none;
}

body.metro-skin.review-expanded #reviewPanel .review-row {
  grid-template-columns: minmax(0, 1fr) minmax(180px, 0.7fr);
  padding: 10px 12px;
}

body.metro-skin .review-list::after {
  content: "↓";
  position: sticky;
  right: 0;
  bottom: 0;
  justify-self: end;
  margin: -18px 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 3px solid var(--metro-ink);
  border-radius: 50%;
  background: var(--metro-yellow);
  color: var(--metro-ink);
  font-weight: 950;
  box-shadow: none;
}

body.metro-skin .review-list:not(.is-scrollable)::after {
  display: none;
}

body.metro-skin .review-row {
  grid-template-columns: 1fr;
  gap: 4px;
  min-width: 0;
  padding: 7px 9px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: #e5f7db;
  box-shadow: none;
}

body.metro-skin .review-row.incorrect {
  background: #ffd6ca;
}

body.metro-skin .review-row small {
  color: var(--metro-muted);
}

body.metro-skin .review-row strong,
body.metro-skin .review-row span {
  color: var(--metro-ink);
  font-weight: 900;
  overflow-wrap: anywhere;
}

body.metro-skin .review-row small {
  font-size: 12px;
  font-weight: 800;
}

body.metro-skin .review-row > div {
  display: grid;
  gap: 3px;
  min-width: 0;
}

body.metro-skin .details > div:last-child {
  display: block;
  grid-column: 1;
  grid-row: 3;
  min-height: 0;
  padding: 14px;
  overflow: hidden;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  box-shadow: none;
}

body.metro-skin .pool-preview {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 7px;
  max-height: 198px;
  overflow-y: auto;
  padding: 0 5px 28px 0;
}

body.metro-skin #poolHint {
  float: none;
  margin: -34px 0 8px auto;
  color: var(--metro-muted);
  font-weight: 850;
  text-align: right;
  white-space: nowrap;
}

body.metro-skin .pool-preview::after {
  content: "↓";
  position: sticky;
  right: 0;
  bottom: 0;
  justify-self: end;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 3px solid var(--metro-ink);
  border-radius: 50%;
  background: var(--metro-yellow);
  color: var(--metro-ink);
  font-weight: 950;
  box-shadow: none;
  margin: 0 0 0 auto;
}

body.metro-skin .pool-preview:not(.is-scrollable)::after {
  display: none;
}

body.metro-skin .pool-preview span {
  display: inline-flex;
  width: auto;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: white;
  color: var(--metro-ink);
  box-shadow: none;
  font-weight: 900;
}

body.metro-skin .review-icon-button {
  width: 34px;
  height: 34px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: #fff6d8;
  color: var(--metro-ink);
  box-shadow: none;
  font-weight: 950;
}

body.metro-skin .review-icon-button.active,
body.metro-skin .review-icon-button:hover {
  background: var(--metro-yellow);
}

body.metro-skin .mode-picker button::after,
body.metro-skin .difficulty-picker button::after,
body.metro-skin .hint-button::after {
  z-index: 1000;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  color: var(--metro-ink);
  box-shadow: none;
  font-weight: 900;
}

body.metro-skin .panel-actions .hint-button::after {
  top: calc(100% + 10px);
  right: 0;
  bottom: auto;
  left: auto;
  transform: translateY(-4px);
  max-width: min(260px, 82vw);
  white-space: normal;
}

body.metro-skin .panel-actions .hint-button:hover::after,
body.metro-skin .panel-actions .hint-button:focus-visible::after {
  transform: translateY(0);
}

body.metro-skin .teacher-panel {
  grid-area: teacher;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  align-items: start;
}

body.metro-skin .teacher-section {
  min-width: 0;
  height: var(--metro-panel-height);
  padding: 20px;
  border: 4px solid var(--metro-ink);
  border-radius: 0;
  background: var(--metro-paper);
  box-shadow: none;
  overflow: hidden;
}

body.metro-skin .teacher-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 4px solid var(--metro-ink);
}

body.metro-skin .teacher-heading h2 {
  color: var(--metro-ink);
  font-size: 24px;
  font-weight: 950;
}

body.metro-skin .teacher-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: nowrap;
  gap: 10px;
}

body.metro-skin .teacher-actions button {
  min-height: 42px;
  padding: 0 14px;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: #fff6d8;
  color: var(--metro-ink);
  box-shadow: none;
  font-weight: 950;
}

body.metro-skin .teacher-actions button:hover {
  background: var(--metro-yellow);
}

body.metro-skin .teacher-output {
  position: relative;
  height: calc(var(--metro-panel-height) - 118px);
  min-height: 0;
  padding: 14px 16px;
  overflow: auto;
  border: 3px solid var(--metro-ink);
  border-radius: 0;
  background: white;
  color: var(--metro-ink);
  box-shadow: none;
  font-size: 15px;
  font-weight: 850;
  line-height: 1.45;
}

body.metro-skin .teacher-section:has(.teacher-output.is-scrollable)::after {
  content: "↓";
  position: sticky;
  right: 4px;
  bottom: 4px;
  float: right;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-top: -34px;
  border: 3px solid var(--metro-ink);
  border-radius: 50%;
  background: var(--metro-yellow);
  color: var(--metro-ink);
  box-shadow: none;
  font-weight: 950;
}

body.metro-skin.teacher-mode .exercise {
  display: none;
}

body.metro-skin.teacher-mode .teacher-panel {
  display: grid;
}

body.metro-skin .site-footer .footer-actions {
  display: none;
}

@media (min-width: 1121px) {
  body.metro-skin.teacher-mode .teacher-panel {
    grid-column: 2 / span 2;
    grid-row: 3;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1120px) {
  body.metro-skin {
    --metro-panel-height: auto;
  }

  body.metro-skin.teacher-mode .app,
  body.metro-skin .app {
    grid-template-columns: 1fr;
    grid-template-areas:
      "hero"
      "settings-toggle"
      "toolbar"
      "exercise"
      "teacher";
  }

  body.metro-skin.teacher-mode .teacher-panel {
    grid-column: 1;
    grid-row: auto;
    grid-template-columns: 1fr;
  }

  body.metro-skin .exercise {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto;
  }

  body.metro-skin .toolbar,
  body.metro-skin .exercise {
    height: auto;
  }

  body.metro-skin .card,
  body.metro-skin .prompt-strip,
  body.metro-skin #paradigmPanel,
  body.metro-skin #reviewPanel,
  body.metro-skin .details > div:last-child,
  body.metro-skin .teacher-panel {
    grid-column: 1;
    grid-row: auto;
  }

  body.metro-skin .paradigm {
    overflow: visible;
  }
}

@media (max-width: 720px) {
  body.metro-skin .page {
    width: min(100% - 24px, 560px);
    padding-top: 12px;
  }

  body.metro-skin .topbar {
    grid-template-columns: 48px 1fr 48px;
  }

  body.metro-skin .hero h1 {
    gap: 2px;
    text-align: left;
    justify-items: start;
  }

  body.metro-skin .hero-brand {
    font-size: clamp(30px, 9vw, 44px);
  }

  body.metro-skin .hero h1::before {
    position: static;
    transform: none;
    margin-right: 0;
  }

  body.metro-skin .toolbar {
    max-height: none;
    overflow: visible;
    margin-top: -18px;
    padding-top: 18px;
    border-top-width: 0;
    box-shadow: none;
  }

  body.metro-skin .toolbar::after {
    display: none;
  }

  body.metro-skin .settings-toggle {
    display: block;
    margin-bottom: 0;
  }

  body.metro-skin:not(.settings-collapsed) .settings-toggle {
    border-bottom: 0;
    box-shadow: none;
  }

  body.metro-skin.settings-collapsed .settings-toggle {
    box-shadow: none;
  }

  body.metro-skin.settings-collapsed .toolbar {
    display: none;
  }

  body.metro-skin.settings-collapsed .app {
    row-gap: 18px;
  }

  body.metro-skin.settings-collapsed .settings-toggle {
    margin-bottom: 0;
  }

  body.metro-skin .prompt-strip {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 4px;
    gap: 0;
  }

  body.metro-skin .panel-heading {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: start;
  }

  body.metro-skin .panel-heading h2 {
    font-size: clamp(23px, 6.5vw, 30px);
    line-height: 1.05;
  }

  body.metro-skin .panel-actions {
    grid-template-columns: repeat(2, 34px);
  }

  body.metro-skin .panel-actions .hint-button::after {
    top: calc(100% + 10px);
    right: 0;
    bottom: auto;
    left: auto;
    max-width: min(240px, calc(100vw - 48px));
    transform: translateY(-4px);
  }

  body.metro-skin .panel-actions .hint-button:hover::after,
  body.metro-skin .panel-actions .hint-button:focus-visible::after {
    transform: translateY(0);
  }

  body.metro-skin .review-expand-button {
    display: none;
  }

  body.metro-skin #poolHint {
    margin: 6px 0 8px;
    text-align: left;
  }

  body.metro-skin .prompt-strip > div {
    min-height: 72px;
    border-right: 3px solid rgba(255, 253, 244, 0.28);
    border-bottom: 3px solid rgba(255, 253, 244, 0.28);
  }

  body.metro-skin .prompt-strip > div:nth-child(2n) {
    border-right: 0;
  }

  body.metro-skin .prompt-strip > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

  body.metro-skin .card {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto auto auto;
    grid-template-areas:
      "meta"
      "verb"
      "question"
      "feedback"
      "actions"
      "summary";
    gap: 9px;
    padding: 16px;
  }

  body.metro-skin .card .question {
    display: grid;
    gap: 8px;
  }

  body.metro-skin #answerInput {
    height: 52px;
    font-size: clamp(22px, 7vw, 30px);
    line-height: 52px;
  }

  body.metro-skin .answer-hint {
    margin-top: 0;
  }

  body.metro-skin .feedback {
    min-height: 44px;
    height: auto;
    padding: 9px 12px;
  }

  body.metro-skin .actions {
    height: auto;
    min-height: 44px;
    justify-content: stretch;
  }

  body.metro-skin .actions .primary,
  body.metro-skin .actions button,
  body.metro-skin .primary,
  body.metro-skin .next-mode {
    min-height: 46px;
    height: 46px;
  }

  body.metro-skin .verb-meta {
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 8px;
  }

  body.metro-skin .verb-heading {
    grid-template-columns: 1fr;
    min-height: 0;
    gap: 2px;
  }

  body.metro-skin h1,
  body.metro-skin.dark-mode h1 {
    font-size: clamp(36px, 11vw, 52px);
    max-width: 100%;
    white-space: nowrap;
  }

  body.metro-skin #pronounText {
    justify-self: center;
    align-self: start;
    min-height: 0;
    font-size: clamp(18px, 6vw, 24px);
  }

  body.metro-skin .verb-marker {
    justify-self: start;
    margin-left: 0;
  }

  body.metro-skin.teacher-mode .teacher-panel {
    grid-template-columns: 1fr;
  }

  body.metro-skin .difficulty-picker {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body.metro-skin #reviewPanel {
    max-height: 440px;
    overflow: hidden;
  }

  body.metro-skin .review-list {
    max-height: 260px;
    overflow-y: auto;
  }

  body.metro-skin .teacher-section {
    height: auto;
    padding: 16px;
  }

  body.metro-skin .teacher-heading {
    align-items: center;
    grid-template-columns: minmax(0, 1fr) auto;
  }

  body.metro-skin .teacher-heading h2 {
    font-size: 22px;
    min-width: 0;
    line-height: 1;
  }

  body.metro-skin .teacher-actions {
    flex: none;
    gap: 8px;
  }

  body.metro-skin .teacher-actions button {
    min-height: 38px;
    padding: 0 10px;
    font-size: 14px;
  }

  body.metro-skin .teacher-output {
    height: auto;
    max-height: 420px;
    min-height: 320px;
    font-size: 15px;
    line-height: 1.7;
  }

  body.metro-skin .actions button {
    width: 100%;
  }

  body.metro-skin #paradigmPanel h2,
  body.metro-skin #reviewPanel h2,
  body.metro-skin .details > div:last-child h2 {
    font-size: clamp(24px, 7vw, 30px);
    line-height: 1.05;
  }

  body.metro-skin .tense-pill {
    min-height: 46px;
    padding: 5px 5px 5px 7px;
  }

  body.metro-skin .tense-summary {
    gap: 4px;
  }

  body.metro-skin .tense-chip {
    min-height: 20px;
    padding: 2px 5px;
    font-size: 10.5px;
  }

  body.metro-skin .drawer-caret {
    width: 20px;
    height: 20px;
  }

  body.metro-skin .paradigm-row {
    grid-template-columns: 72px minmax(0, 1fr);
  }

  body.metro-skin .paradigm-row span {
    overflow-wrap: anywhere;
  }
}

body.metro-skin :where(
  .icon-button,
  .qr-toggle,
  .skin-button,
  .mode-button,
  .qr-card,
  .hero,
  .toolbar,
  .toolbar::after,
  .settings-toggle,
  .field,
  .book-picker,
  .lesson-picker,
  .scope-toggle,
  .difficulty-picker,
  .mode-picker,
  .round-control,
  .round-stepper,
  .book-picker button,
  .lesson-picker button,
  .scope-toggle button,
  .difficulty-picker button,
  .mode-picker button,
  .round-adjust,
  .round-value,
  .unlimited-button,
  .select-all-tenses,
  .tense-pill,
  .tense-chip,
  .tense-drawer,
  .tense-drawer label,
  .prompt-strip > div,
  .card,
  .prompt-tense-tag,
  .verb-marker,
  #answerInput,
  .feedback,
  .actions .primary,
  .actions button,
  .primary,
  .next-mode,
  .details > div,
  .paradigm-row,
  .review-list::after,
  .review-row,
  .pool-preview::after,
  .pool-preview span,
  .review-icon-button,
  .mode-picker button::after,
  .difficulty-picker button::after,
  .hint-button::after,
  .teacher-section,
  .teacher-actions button,
  .teacher-output,
  .teacher-section::after
) {
  box-shadow: none !important;
}