/* ==========================================================================
   Practice — example library, exercises, AI coach
   ========================================================================== */

.practice-shell {
  padding-bottom: var(--space-7);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.practice-hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(38px, 6vw, 70px) 0 34px;
}

.practice-hero h1 {
  margin: 0 0 var(--space-4);
  font-size: clamp(2.4rem, 5.2vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.06em;
  font-weight: 800;
}

.practice-hero .gradient-text {
  background: linear-gradient(105deg, var(--primary) 8%, #8b5cf6 54%, #d946ef 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

html[data-theme="dark"] .practice-hero .gradient-text {
  background: linear-gradient(105deg, #a5b4fc 8%, #c4b5fd 54%, #f0abfc 96%);
  -webkit-background-clip: text;
  background-clip: text;
}

.practice-hero .hero-text {
  max-width: 690px;
  margin: 0;
}

.offline-card {
  flex: 0 0 280px;
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 15px;
  border: 1px solid color-mix(in srgb, var(--primary) 18%, var(--line));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--primary-soft) 56%, var(--surface));
  box-shadow: var(--shadow-sm);
}

.offline-icon {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: var(--success);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  box-shadow: 0 5px 14px color-mix(in srgb, var(--success) 26%, transparent);
}

.offline-card strong {
  display: block;
  font-size: 0.83rem;
}

.offline-card p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.45;
}

/* --------------------------------------------------------------------------
   Tabs
   -------------------------------------------------------------------------- */
.practice-tabs {
  display: inline-flex;
  gap: 4px;
  padding: 5px;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  box-shadow: var(--shadow-xs);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.practice-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 0;
  border-radius: var(--radius-md);
  padding: 9px 15px;
  background: transparent;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  transition: 170ms ease;
}

.practice-tab:hover {
  background: var(--surface-soft);
  color: var(--ink);
}

.practice-tab.active {
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.practice-tab-icon {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  color: var(--primary);
  font-size: 0.68rem;
  font-weight: 800;
}

.practice-tab.active .practice-tab-icon {
  background: var(--primary-soft);
}

.practice-panel {
  animation: page-in 300ms var(--ease-out) both;
}

/* --------------------------------------------------------------------------
   Example library toolbar
   -------------------------------------------------------------------------- */
.library-toolbar {
  margin-bottom: 15px;
}

.panel-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.panel-heading .eyebrow {
  margin-bottom: 3px;
}

.panel-heading h2 {
  margin: 0;
  font-size: var(--text-h2);
  letter-spacing: -0.04em;
}

.panel-heading p:not(.eyebrow) {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.83rem;
}

.panel-heading.compact {
  margin-top: 34px;
}

.examples-count {
  flex: 0 0 auto;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--muted-strong);
  font-size: 0.67rem;
  font-weight: 750;
}

.library-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 260px;
  max-width: 390px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--muted);
  box-shadow: var(--shadow-xs);
  transition: border-color 160ms, box-shadow 160ms;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 11%, transparent);
}

.search-box svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
}

.search-box input {
  width: 100%;
  padding: 9px 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 0.78rem;
}

.search-box input::placeholder {
  color: var(--muted);
  opacity: 0.75;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--muted);
  padding: 6px 11px;
  font-size: 0.7rem;
  font-weight: 700;
  transition: 150ms ease;
}

.filter-chip:hover,
.filter-chip.active {
  border-color: color-mix(in srgb, var(--primary) 40%, var(--line));
  background: var(--primary-soft);
  color: var(--primary);
}

.favorites-chip span[aria-hidden="true"] {
  color: var(--warning);
}

.filter-count {
  min-width: 17px;
  padding: 0 4px;
  border-radius: var(--radius-pill);
  background: var(--surface-soft);
  color: var(--muted-strong);
  font-size: 0.61rem;
  font-weight: 800;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Example cards
   -------------------------------------------------------------------------- */
.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.example-card {
  display: flex;
  flex-direction: column;
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 96%, transparent);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-fast) ease, box-shadow var(--duration-fast) ease, border-color var(--duration-fast) ease;
}

.example-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 22%, var(--line));
  box-shadow: var(--shadow-md);
}

.example-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.example-card h3 {
  margin: 0 0 1px;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}

.example-card .tr-label {
  color: var(--muted);
  font-size: 0.69rem;
}

.example-count {
  flex: 0 0 auto;
  padding: 3px 7px;
  border-radius: var(--radius-pill);
  background: var(--surface-soft);
  color: var(--muted-strong);
  font-size: 0.61rem;
  font-weight: 750;
}

.example-formula {
  margin-bottom: 6px;
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.example-tip {
  margin: 0 0 11px;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.5;
}

.example-list {
  display: grid;
  gap: 6px;
  margin-top: auto;
}

.example-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 9px 9px 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  transition: background 150ms, border-color 150ms;
}

.example-row:hover {
  background: var(--surface);
  border-color: color-mix(in srgb, var(--primary) 18%, var(--line));
}

.example-row-main {
  min-width: 0;
  flex: 1;
}

.example-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 1px;
}

.level-badge {
  padding: 0 5px;
  border-radius: var(--radius-xs);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.56rem;
  font-weight: 850;
  letter-spacing: 0.04em;
}

.example-en {
  margin: 0;
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 650;
  line-height: 1.45;
}

.example-tr {
  margin: 1px 0 0;
  color: var(--muted);
  font-size: 0.71rem;
  line-height: 1.4;
}

.example-actions {
  display: flex;
  gap: 2px;
  flex: 0 0 auto;
}

.icon-button {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  transition: 150ms ease;
}

.icon-button svg {
  width: 15px;
  height: 15px;
}

.icon-button:hover {
  border-color: var(--line);
  background: var(--surface);
  color: var(--primary);
  transform: translateY(-1px);
}

.favorite-button.is-favorite {
  color: var(--warning);
}

.favorite-button.is-favorite svg {
  fill: color-mix(in srgb, var(--warning) 24%, transparent);
}

.icon-button.is-speaking {
  color: var(--primary);
  animation: speak-pulse 900ms ease-in-out infinite;
}

@keyframes speak-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.13); }
}

.load-more-button {
  align-self: flex-start;
  margin-top: 9px;
  border: 0;
  background: transparent;
  color: var(--primary);
  font-size: 0.7rem;
  font-weight: 750;
  padding: 1px 0;
}

.load-more-button:hover {
  text-decoration: underline;
}

.examples-empty {
  grid-column: 1 / -1;
  padding: 38px 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  text-align: center;
}

.examples-empty-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 10px;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 1.1rem;
}

.examples-empty h3 {
  margin: 0 0 3px;
  font-size: 0.95rem;
}

.examples-empty p {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}

/* --------------------------------------------------------------------------
   Grammar essentials
   -------------------------------------------------------------------------- */
.grammar-essentials {
  margin-top: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--surface) 56%, transparent);
}

.essentials-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.essentials-grid article {
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.essential-token {
  display: inline-block;
  margin-bottom: 5px;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 800;
}

.essentials-grid h3 {
  margin: 0 0 3px;
  font-size: 0.84rem;
}

.essentials-grid p {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.5;
}

.essentials-grid ul {
  margin: 0;
  padding-left: 16px;
  color: var(--muted-strong);
  font-size: 0.75rem;
  line-height: 1.7;
}

.essentials-grid ul span {
  color: var(--muted);
  font-size: 0.67rem;
}

/* --------------------------------------------------------------------------
   Exercises
   -------------------------------------------------------------------------- */
.exercise-card {
  max-width: 860px;
  margin: 0 auto;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: var(--shadow-md);
}

.exercise-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 15px;
  margin-bottom: 18px;
}

.exercise-kicker {
  margin: 0 0 2px;
  color: var(--primary);
  font-size: 0.65rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.exercise-top h2 {
  margin: 0;
  font-size: 1.3rem;
  letter-spacing: -0.035em;
}

.exercise-sub {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.exercise-stats {
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
}

.score-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.68rem;
  font-weight: 750;
}

.score-pill strong {
  font-size: 0.84rem;
  font-weight: 850;
}

.progress-track {
  height: 7px;
  overflow: hidden;
  margin-bottom: 8px;
  border-radius: var(--radius-pill);
  background: var(--surface-soft);
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), #8b5cf6);
  transition: width 260ms var(--ease-out);
}

.exercise-counter {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 650;
}

.question-area h3 {
  margin: 0 0 15px;
  font-size: clamp(1.1rem, 2.5vw, 1.36rem);
  line-height: 1.55;
  letter-spacing: -0.02em;
}

.blank-line {
  display: inline-block;
  min-width: 76px;
  padding: 0 5px 1px;
  border-bottom: 2px solid var(--primary);
  color: var(--primary);
  text-align: center;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.option-button {
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 11px 10px;
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 700;
  transition: 150ms ease;
}

.option-button:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-1px);
}

.option-button:disabled {
  cursor: default;
}

.option-button.correct {
  border-color: var(--success);
  background: var(--success-soft);
  color: var(--success);
}

.option-button.wrong {
  border-color: var(--danger);
  background: var(--danger-soft);
  color: var(--danger);
}

.exercise-feedback {
  display: grid;
  gap: 5px;
  margin-top: 13px;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.81rem;
  line-height: 1.55;
}

.exercise-feedback.success {
  border: 1px solid color-mix(in srgb, var(--success) 30%, var(--line));
  background: var(--success-soft);
  color: var(--success);
}

.exercise-feedback.error {
  border: 1px solid color-mix(in srgb, var(--danger) 30%, var(--line));
  background: var(--danger-soft);
  color: var(--danger);
}

.exercise-feedback strong {
  font-weight: 800;
}

.feedback-title {
  font-size: 0.86rem;
  line-height: 1.35;
}

.feedback-answer,
.feedback-rule,
.feedback-example {
  margin: 0;
}

.feedback-answer {
  line-height: 1.45;
}

.feedback-rule {
  opacity: 0.92;
}

.feedback-example {
  margin-top: 2px;
  padding-left: 10px;
  border-left: 2px solid currentColor;
  line-height: 1.45;
}

.feedback-example strong {
  font-weight: 750;
}

.exercise-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 15px;
}

.build-instruction {
  margin: 0 0 15px;
  color: var(--muted);
  font-size: 0.8rem;
}

.build-prompt {
  margin-bottom: 11px;
  padding: 12px 14px;
  border-left: 3px solid var(--warning);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: color-mix(in srgb, var(--warning-soft) 74%, transparent);
}

.build-label {
  color: var(--warning);
  font-size: 0.61rem;
  font-weight: 850;
  letter-spacing: 0.11em;
}

.build-prompt p {
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: 0.87rem;
  font-weight: 650;
}

.build-dropzone {
  min-height: 78px;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 6px;
  padding: 12px;
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  transition: 150ms ease;
}

.build-dropzone.dragover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.dropzone-placeholder {
  align-self: center;
  padding: 16px 5px;
  color: var(--muted);
  font-size: 0.8rem;
}

.build-bank {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 40px;
  margin-top: 11px;
}

.word-chip {
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  padding: 6px 10px;
  font-size: 0.81rem;
  font-weight: 650;
  transition: 140ms ease;
}

.word-chip:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.word-chip.in-answer {
  border-color: color-mix(in srgb, var(--primary) 30%, var(--line));
  background: var(--primary-soft);
  color: var(--primary);
}

.word-chip.dragging {
  opacity: 0.45;
}

.word-chip:disabled {
  opacity: 0.35;
  cursor: default;
}

/* --------------------------------------------------------------------------
   Practice CTA
   -------------------------------------------------------------------------- */
.practice-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin: 26px 0 8px;
  padding: 23px 26px;
  border: 1px solid color-mix(in srgb, var(--primary) 16%, var(--line));
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 100% 0%, rgba(217, 70, 239, 0.12), transparent 36%),
    linear-gradient(120deg, color-mix(in srgb, var(--primary-soft) 72%, transparent), var(--surface));
}

.practice-cta .eyebrow { margin-bottom: 2px; }
.practice-cta h2 { margin: 0 0 3px; font-size: 1.16rem; letter-spacing: -0.035em; }
.practice-cta p:not(.eyebrow) { margin: 0; color: var(--muted); font-size: 0.8rem; }
.practice-cta .primary-button { flex: 0 0 auto; }

/* --------------------------------------------------------------------------
   AI Coach modal
   -------------------------------------------------------------------------- */
.coach-modal {
  position: fixed;
  inset: 0;
  z-index: 250;
  display: grid;
  place-items: center;
  padding: 24px;
}

.coach-modal[hidden] { display: none; }

.coach-backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(79, 70, 229, 0.26), transparent 28%),
    radial-gradient(circle at 80% 78%, rgba(217, 70, 239, 0.18), transparent 26%),
    rgba(8, 15, 25, 0.58);
  -webkit-backdrop-filter: blur(13px) saturate(115%);
  backdrop-filter: blur(13px) saturate(115%);
  animation: coach-fade 180ms ease both;
}

.coach-backdrop::before,
.coach-backdrop::after {
  content: "";
  position: absolute;
  border-radius: var(--radius-full);
  pointer-events: none;
  filter: blur(36px);
}

.coach-backdrop::before {
  width: 280px;
  height: 280px;
  top: 10%;
  left: 12%;
  background: rgba(99, 102, 241, 0.3);
  animation: coach-aurora 9s ease-in-out infinite alternate;
}

.coach-backdrop::after {
  width: 240px;
  height: 240px;
  right: 13%;
  bottom: 10%;
  background: rgba(217, 70, 239, 0.18);
  animation: coach-aurora 11s ease-in-out infinite alternate-reverse;
}

.coach-dialog {
  position: relative;
  width: min(830px, 100%);
  max-height: min(92vh, 880px);
  max-height: min(92dvh, 880px);
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding: 34px 38px 29px;
  border: 1px solid color-mix(in srgb, var(--line) 65%, transparent);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 100% 0%, rgba(217, 70, 239, 0.1), transparent 36%),
    radial-gradient(circle at 0% 0%, rgba(79, 70, 229, 0.12), transparent 34%),
    var(--surface);
  box-shadow: var(--shadow-xl);
  isolation: isolate;
  animation: coach-pop 440ms var(--ease-out) both;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.coach-dialog::before {
  content: "";
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 3px;
  border-radius: 0 0 var(--radius-full) var(--radius-full);
  background: linear-gradient(90deg, transparent, var(--warning), var(--primary), var(--warning), transparent);
  background-size: 220% 100%;
  animation: coach-beam 2.8s linear infinite;
  pointer-events: none;
  z-index: 2;
}

.coach-dialog > * {
  position: relative;
  z-index: 1;
}

.coach-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 13px;
}

.coach-badge {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px 8px 8px;
  border: 1px solid color-mix(in srgb, var(--primary) 18%, var(--line));
  border-radius: var(--radius-pill);
  background: linear-gradient(120deg, var(--primary-soft), color-mix(in srgb, var(--warning-soft) 70%, var(--surface)));
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 800;
  box-shadow: var(--shadow-sm);
}

.coach-badge::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 25%, rgba(255, 255, 255, 0.55) 48%, transparent 70%);
  transform: translateX(-130%);
  animation: coach-sheen 3.2s ease-in-out infinite;
  pointer-events: none;
}

.coach-spark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff;
  font-size: 0.82rem;
  animation: coach-spark-float 2.2s ease-in-out infinite;
}

.coach-status {
  padding-left: 7px;
  border-left: 1px solid color-mix(in srgb, var(--primary) 20%, var(--line));
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 700;
}

.coach-status::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 4px;
  border-radius: var(--radius-full);
  background: var(--warning);
  vertical-align: middle;
  animation: coach-blink 1s ease-in-out infinite;
}

.coach-status.ready::before {
  background: var(--success);
  animation: none;
}

.coach-close {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-full);
  background: var(--surface);
  color: var(--muted);
  font-size: 1.25rem;
  line-height: 1;
  transition: transform 220ms var(--ease-spring), border-color 180ms, color 180ms;
}

.coach-close:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: rotate(90deg) scale(1.04);
}

.coach-load-track {
  height: 4px;
  margin: 0 0 23px;
  border-radius: var(--radius-pill);
  background: var(--surface-soft);
  overflow: hidden;
}

.coach-load-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), #8b5cf6, var(--warning));
  box-shadow: 0 0 14px color-mix(in srgb, var(--primary) 40%, transparent);
  transition: width 520ms var(--ease-out);
}

.coach-kicker {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.2em;
}

.coach-dialog h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3.8vw, 2.08rem);
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.coach-yours {
  margin: 11px 0 19px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.coach-yours-line {
  display: block;
}

.coach-yours-line + .coach-yours-line {
  margin-top: 2px;
}

.coach-yours strong {
  color: var(--danger);
  font-size: 0.98rem;
  font-weight: 750;
}

.coach-yours .correct-answer {
  color: var(--success);
}

.coach-line-break {
  display: block;
  height: 0.62rem;
}

.coach-copy {
  min-height: 72px;
  padding-right: 10px;
  color: var(--ink-soft);
  font-size: 1.08rem;
  line-height: 1.92;
}

.coach-caret {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  margin-left: 2px;
  border-radius: var(--radius-xs);
  background: var(--primary);
  box-shadow: 0 0 9px color-mix(in srgb, var(--primary) 65%, transparent);
  vertical-align: -0.18em;
  animation: coach-caret 0.72s steps(2, end) infinite;
}

.type-word {
  display: inline-block;
  margin-right: 0.29em;
  opacity: 0;
  filter: blur(9px);
  transform: translateY(7px) scale(0.985);
  transition:
    opacity var(--type-opacity-ms, 430ms) ease,
    filter var(--type-blur-ms, 620ms) var(--ease-out),
    transform var(--type-transform-ms, 480ms) var(--ease-out);
}

.type-word.visible {
  opacity: 1;
  filter: blur(0);
  transform: none;
}

.hl-green { color: var(--success); font-weight: 800; }
.hl-blue { color: #2563eb; font-weight: 800; }
html[data-theme="dark"] .hl-blue { color: #93c5fd; }
.hl-amber { color: var(--warning); font-weight: 800; }
.hl-pink { color: #c026d3; font-weight: 800; }

.coach-examples {
  display: grid;
  gap: 11px;
  margin-top: 17px;
}

.coach-example {
  padding: 15px 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--surface), var(--surface-soft));
  opacity: 0;
  transform: translateY(14px) scale(0.975);
  animation: coach-example-in 480ms var(--ease-out) forwards;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.coach-example:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 35%, var(--line));
  box-shadow: var(--shadow-md);
}

.coach-example-label {
  display: inline-block;
  margin-bottom: 5px;
  color: var(--primary);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.15em;
}

.coach-example p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.65;
}

.coach-example .coach-example-en {
  color: var(--ink);
  font-weight: 700;
}

.coach-example .coach-example-tr {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.87rem;
}

.coach-example-inline-word {
  display: inline-block;
  margin-right: 0.25em;
}

.coach-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 23px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.coach-ai-note {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 650;
}

.coach-ai-note span { color: var(--warning); }

body.modal-open { overflow: hidden; }

@keyframes coach-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes coach-pop {
  0% { opacity: 0; transform: translateY(26px) scale(0.925); filter: blur(6px); }
  65% { opacity: 1; filter: blur(0); }
  100% { opacity: 1; transform: none; filter: blur(0); }
}

@keyframes coach-aurora {
  0% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.7; }
  100% { transform: translate3d(36px, -28px, 0) scale(1.18); opacity: 1; }
}

@keyframes coach-beam {
  0% { background-position: 0% 50%; }
  100% { background-position: 220% 50%; }
}

@keyframes coach-sheen {
  0%, 55% { transform: translateX(-130%); }
  80%, 100% { transform: translateX(130%); }
}

@keyframes coach-spark-float {
  0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
  50% { transform: translateY(-2px) rotate(12deg) scale(1.06); }
}

@keyframes coach-caret {
  0%, 45% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@keyframes coach-blink {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 1; }
}

@keyframes coach-example-in {
  0% { opacity: 0; transform: translateY(14px) scale(0.975); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 980px) {
  .examples-grid {
    grid-template-columns: 1fr;
  }

  .practice-hero {
    display: block;
  }

  .offline-card {
    max-width: 330px;
    margin-top: 18px;
  }
}

@media (max-width: 760px) {
  .practice-tabs {
    display: flex;
    width: 100%;
  }

  .practice-tab {
    flex: 1;
    justify-content: center;
    padding: 8px 9px;
    font-size: 0.74rem;
  }

  .practice-tab-icon {
    display: none;
  }

  .panel-heading {
    display: block;
  }

  .examples-count {
    display: inline-block;
    margin-top: 8px;
  }

  .library-controls {
    display: block;
  }

  .search-box {
    max-width: none;
    margin-bottom: 9px;
  }

  .essentials-grid {
    grid-template-columns: 1fr;
  }

  .grammar-essentials {
    padding: 17px;
  }

  .exercise-card {
    padding: 19px;
  }

  .options-grid {
    grid-template-columns: 1fr;
  }

  .practice-cta {
    display: block;
  }

  .practice-cta .primary-button {
    margin-top: 13px;
  }

  .coach-modal {
    padding: 12px;
  }

  .coach-dialog {
    width: 100%;
    max-height: 94vh;
    padding: 25px 21px 22px;
    border-radius: var(--radius-xl);
  }

  .coach-dialog h2 {
    font-size: clamp(1.38rem, 7vw, 1.7rem);
  }

  .coach-copy {
    font-size: 1rem;
    line-height: 1.82;
  }

  .coach-yours {
    font-size: 0.86rem;
  }

  .coach-example p {
    font-size: 0.92rem;
  }

  .coach-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .coach-footer .primary-button {
    width: 100%;
  }
}

@media (max-width: 560px) {
  .practice-hero h1 {
    font-size: clamp(2.1rem, 10.5vw, 2.9rem);
  }

  .practice-hero .gradient-text {
    white-space: normal;
  }

  .exercise-top {
    display: block;
  }

  .exercise-stats {
    margin-top: 9px;
  }

  .example-card {
    padding: 14px;
  }

  .coach-badge {
    padding: 6px 10px 6px 6px;
    font-size: 0.75rem;
  }

  .coach-spark {
    width: 25px;
    height: 25px;
  }
}

/* reduced-motion bypassed by product requirement */
/* --------------------------------------------------------------------------
   Score card
   -------------------------------------------------------------------------- */
.score-card-holder {
  margin-top: 16px;
}

.score-card {
  padding: 26px 20px;
  border: 1px solid color-mix(in srgb, var(--primary) 20%, var(--line));
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--primary) 14%, transparent), transparent 50%),
    linear-gradient(135deg, var(--surface), var(--surface-soft));
  text-align: center;
  animation: page-in 320ms var(--ease-out) both;
}

.score-card-kicker {
  display: block;
  margin-bottom: 4px;
  color: var(--primary);
  font-size: 0.62rem;
  font-weight: 850;
  letter-spacing: 0.16em;
}

.score-card-value {
  color: var(--ink);
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  font-weight: 850;
  line-height: 1;
  letter-spacing: -0.06em;
}

.score-card-value span {
  color: var(--muted);
  font-size: 0.46em;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.score-card h3 {
  margin: 8px 0 4px;
  font-size: 1rem;
  letter-spacing: -0.025em;
}

.score-card p {
  max-width: 460px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.55;
}

/* Hero eyebrow shared with home */
.practice-hero .hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 5px 11px 5px 7px;
  border: 1px solid color-mix(in srgb, var(--primary) 18%, transparent);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--primary-soft) 70%, transparent);
  color: var(--primary);
  font-size: 0.67rem;
  letter-spacing: 0.12em;
}

.practice-hero .eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--primary);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent);
  animation: practice-dot 2.4s ease-in-out infinite;
}

@keyframes practice-dot {
  0%, 100% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent); }
  50% { box-shadow: 0 0 0 7px color-mix(in srgb, var(--primary) 0%, transparent); }
}

/* --------------------------------------------------------------------------
   Progress dashboard
   -------------------------------------------------------------------------- */
.progress-dashboard {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 18px;
  margin-bottom: 19px;
  padding: 17px 19px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 100% 0%, rgba(217, 70, 239, 0.07), transparent 30%),
    color-mix(in srgb, var(--surface) 72%, transparent);
  box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.progress-copy {
  min-width: 0;
}

.progress-copy .eyebrow {
  margin-bottom: 2px;
}

.progress-copy h2 {
  margin: 0;
  font-size: 1rem;
  letter-spacing: -0.025em;
}

.progress-copy > p:not(.eyebrow):not(.daily-progress-label) {
  margin: 2px 0 8px;
  color: var(--muted);
  font-size: 0.74rem;
}

.daily-progress {
  max-width: 360px;
  height: 7px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--surface-soft);
}

.daily-progress span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), #8b5cf6, #d946ef);
  transition: width 360ms var(--ease-out);
}

.daily-progress-label {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.68rem;
}

.daily-progress-label strong {
  color: var(--primary);
  font-weight: 800;
}

.progress-stats {
  display: flex;
  align-items: center;
  gap: 8px;
}

.progress-stat {
  display: grid;
  justify-items: center;
  min-width: 66px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.progress-stat-icon {
  font-size: 0.76rem;
  line-height: 1;
}

.progress-stat strong {
  color: var(--ink);
  font-size: 0.96rem;
  font-weight: 800;
  line-height: 1.2;
}

.progress-stat small {
  color: var(--muted);
  font-size: 0.58rem;
  font-weight: 650;
}

.sound-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  align-self: center;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 700;
  transition: 150ms ease;
}

.sound-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.sound-toggle[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--success) 35%, var(--line));
  background: var(--success-soft);
  color: var(--success);
}

/* --------------------------------------------------------------------------
   Focus mode / fullscreen
   -------------------------------------------------------------------------- */
.focus-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 5px 9px;
  background: var(--surface);
  color: var(--muted-strong);
  font-size: 0.63rem;
  font-weight: 700;
  transition: 150ms ease;
}

.focus-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.focus-timer {
  display: none;
  align-items: center;
  padding: 4px 8px;
  border-radius: var(--radius-pill);
  background: var(--surface-soft);
  color: var(--muted-strong);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-variant-numeric: tabular-nums;
}

body.focus-mode .focus-timer {
  display: inline-flex;
}

.library-heading-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.exercise-card:fullscreen,
.exercise-card:-webkit-full-screen,
#panel-examples:fullscreen,
#panel-examples:-webkit-full-screen {
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  border: 0;
  border-radius: 0;
  background: var(--bg);
  box-shadow: none;
  overflow-y: auto;
}

.exercise-card:fullscreen,
.exercise-card:-webkit-full-screen {
  padding: clamp(24px, 6vw, 64px);
}

.exercise-card:fullscreen .exercise-top,
.exercise-card:-webkit-full-screen .exercise-top {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.exercise-card:fullscreen .progress-track,
.exercise-card:fullscreen #fill-counter,
.exercise-card:fullscreen .question-area,
.exercise-card:fullscreen .exercise-feedback,
.exercise-card:fullscreen .exercise-actions,
.exercise-card:fullscreen .build-instruction,
.exercise-card:fullscreen .build-prompt,
.exercise-card:fullscreen .build-dropzone,
.exercise-card:fullscreen .build-bank,
.exercise-card:-webkit-full-screen .progress-track,
.exercise-card:-webkit-full-screen #fill-counter,
.exercise-card:-webkit-full-screen .question-area,
.exercise-card:-webkit-full-screen .exercise-feedback,
.exercise-card:-webkit-full-screen .exercise-actions,
.exercise-card:-webkit-full-screen .build-instruction,
.exercise-card:-webkit-full-screen .build-prompt,
.exercise-card:-webkit-full-screen .build-dropzone,
.exercise-card:-webkit-full-screen .build-bank {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

#panel-examples:fullscreen .practice-panel,
#panel-examples:-webkit-full-screen .practice-panel {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

body.focus-mode {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   Responsive progress/focus
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .progress-dashboard {
    grid-template-columns: 1fr auto;
  }

  .progress-stats {
    grid-column: 1 / -1;
  }

  .sound-toggle {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (max-width: 560px) {
  .progress-dashboard {
    grid-template-columns: 1fr;
    padding: 15px;
  }

  .progress-stats {
    grid-column: auto;
  }

  .sound-toggle {
    grid-column: auto;
    grid-row: auto;
    justify-self: start;
  }

  .progress-stat {
    min-width: 0;
    flex: 1;
  }

  .library-heading-actions {
    margin-top: 8px;
  }

  .exercise-stats {
    flex-wrap: wrap;
  }

  .focus-toggle span {
    display: none;
  }
}

.coach-dialog:focus {
  outline: none;
}

/* --------------------------------------------------------------------------
   Prominent tabs + rotating Google-AI-style border
   -------------------------------------------------------------------------- */
@property --ai-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

.practice-tabs {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(100%, 820px);
  gap: 6px;
  padding: 6px;
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  box-shadow: var(--shadow-md);
  isolation: isolate;
}

.practice-tabs::after {
  content: "";
  position: absolute;
  inset: -14px 4% auto;
  height: 34px;
  border-radius: var(--radius-full);
  background: radial-gradient(ellipse, rgba(79, 70, 229, 0.42), transparent 68%);
  filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  z-index: -1;
  transition: opacity 260ms ease;
}

.practice-tabs.ai-border-active::after {
  opacity: 1;
}

.practice-tab {
  justify-content: center;
  padding: 11px 14px;
  color: var(--muted-strong);
  font-size: 0.84rem;
  border: 1px solid transparent;
}

.practice-tab:hover {
  border-color: var(--line);
  background: var(--surface-soft);
}

.practice-tab.active {
  border-color: transparent;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  box-shadow:
    0 8px 22px rgba(79, 70, 229, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.practice-tab.active .practice-tab-icon {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

/* Rotating border */
.ai-border-active {
  position: relative;
  isolation: isolate;
}

.ai-border-active::before {
  content: "";
  position: absolute;
  inset: -2px;
  z-index: 3;
  border-radius: inherit;
  padding: 2px;
  background: conic-gradient(
    from var(--ai-angle),
    #4285f4,
    #9b72cb,
    #d96570,
    #f2a600,
    #34a853,
    #4285f4
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
  filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
  animation: ai-border-spin var(--ai-border-speed, 2100ms) linear infinite;
  pointer-events: none;
}

.practice-tabs.ai-border-active::before {
  border-radius: var(--radius-md);
}

.exercise-card.ai-border-active::before {
  border-radius: var(--radius-xl);
}

.practice-tabs.ai-border-active .practice-tab.active {
  animation: ai-tab-pulse 1.5s ease-in-out infinite;
}

@keyframes ai-border-spin {
  to {
    --ai-angle: 360deg;
  }
}

@keyframes ai-tab-pulse {
  0%, 100% {
    box-shadow:
      0 8px 22px rgba(79, 70, 229, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.24);
  }
  50% {
    box-shadow:
      0 10px 30px rgba(124, 58, 237, 0.45),
      0 0 22px rgba(66, 133, 244, 0.22),
      inset 0 1px 0 rgba(255, 255, 255, 0.3);
  }
}

@media (max-width: 760px) {
  .practice-tabs {
    width: 100%;
    gap: 3px;
    padding: 4px;
  }

  .practice-tab {
    padding: 9px 7px;
    font-size: 0.76rem;
  }
}

/* --------------------------------------------------------------------------
   Focus explainer / focus mode bar
   -------------------------------------------------------------------------- */
.focus-explainer {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 16px;
  padding: 11px 14px;
  border: 1px solid color-mix(in srgb, var(--primary) 16%, var(--line));
  border-radius: var(--radius-md);
  background:
    linear-gradient(110deg, color-mix(in srgb, var(--primary-soft) 56%, transparent), var(--surface));
}

.focus-explainer-icon {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--primary-soft);
  color: var(--primary);
}

.focus-explainer-icon svg {
  width: 18px;
  height: 18px;
}

.focus-explainer strong {
  display: block;
  font-size: 0.78rem;
}

.focus-explainer p {
  margin: 1px 0 0;
  color: var(--muted);
  font-size: 0.73rem;
  line-height: 1.45;
}

.focus-toggle svg {
  width: 15px;
  height: 15px;
}

.focus-mode-bar {
  position: sticky;
  top: 0;
  z-index: 25;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 900px;
  margin: 0 auto 20px;
  padding: 11px 13px;
  border: 1px solid color-mix(in srgb, var(--primary) 28%, var(--line));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--primary-soft) 92%, var(--surface));
  box-shadow: var(--shadow-md);
  animation: page-in 220ms var(--ease-out) both;
}

.focus-mode-bar-icon {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.focus-mode-bar-icon svg {
  width: 20px;
  height: 20px;
}

.focus-mode-bar div {
  min-width: 0;
  flex: 1;
}

.focus-mode-bar strong {
  display: block;
  color: var(--primary);
  font-size: 0.8rem;
}

.focus-mode-bar p {
  margin: 1px 0 0;
  color: var(--muted-strong);
  font-size: 0.73rem;
}

.focus-mode-esc {
  flex: 0 0 auto;
  padding: 4px 8px;
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--line));
  border-radius: var(--radius-pill);
  background: var(--surface);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6rem;
}

/* --------------------------------------------------------------------------
   Build / drag-and-drop
   -------------------------------------------------------------------------- */
.build-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 6px;
  padding: 0 2px;
}

.build-section-head.bank-head {
  margin-top: 14px;
}

.build-section-title {
  color: var(--muted);
  font-size: 0.61rem;
  font-weight: 850;
  letter-spacing: 0.13em;
}

.build-wordcount {
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
}

.build-dropzone {
  min-height: 112px;
  gap: 8px;
  padding: 15px;
  border: 2px dashed color-mix(in srgb, var(--primary) 26%, var(--line-strong));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--primary-soft) 46%, transparent), var(--surface-soft));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.32);
  transition:
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 180ms ease,
    transform 160ms var(--ease-spring);
}

.build-dropzone.dragover {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary-soft) 82%, var(--surface));
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--primary) 11%, transparent),
    0 10px 26px rgba(79, 70, 229, 0.12);
  transform: scale(1.006);
}

.dropzone-placeholder {
  width: 100%;
  min-height: 78px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 14px 5px;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}

.dropzone-placeholder svg {
  width: 25px;
  height: 25px;
  color: var(--primary);
  opacity: 0.8;
}

.word-chip.in-answer {
  cursor: grab;
}

.word-chip.in-answer:active {
  cursor: grabbing;
}

.word-chip.drop-target {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 16%, transparent);
  transform: translateY(-2px);
}

#build-clear:disabled {
  opacity: 0.38;
  cursor: default;
  text-decoration: none;
}

@media (max-width: 760px) {
  .focus-explainer {
    align-items: flex-start;
  }

  .focus-mode-bar {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .focus-mode-esc {
    margin-left: 48px;
  }
}

@media (max-width: 560px) {
  .focus-explainer {
    padding: 10px 11px;
  }

  .focus-mode-bar {
    padding: 10px;
  }

  .focus-mode-esc {
    margin-left: 0;
  }

  .build-dropzone {
    min-height: 100px;
    padding: 12px;
  }
}

/* Single focus toggle: enter and exit use the same control */
.focus-toggle {
  white-space: nowrap;
}

.focus-toggle.is-active {
  border-color: transparent;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 28%, transparent);
}

.focus-toggle.is-active:hover {
  color: #fff;
  transform: translateY(-1px);
}

.focus-toggle.is-active svg {
  opacity: 0.9;
}

@media (max-width: 760px) {
  .focus-toggle .focus-toggle-label {
    display: inline;
  }
}

/* Focus toggle ergonomics */
.focus-toggle {
  min-height: 34px;
  padding: 6px 11px;
  font-size: 0.7rem;
}

@media (max-width: 760px) {
  .focus-toggle {
    min-height: 40px;
    padding: 8px 12px;
  }
}