* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  color-scheme: light;
  --bg-primary: #ffffff;
  --bg-secondary: #ffffff;
  --bg-warm: #fafafa;
  --text: #2d2520;
  --text-muted: #5c4d42;
  --accent: #a64d3d;
  --accent-soft: #c47a6a;
  --clay: #a67c52;
  --clay-light: #d4b896;
  --card-bg: #faf7f2;
  --card-border: #e8dfd4;
  --card-flipped: #f5f0e8;
  --shadow: rgba(45, 37, 32, 0.08);
  --shadow-strong: rgba(45, 37, 32, 0.12);
  --container-padding: clamp(1rem, 4vw, 2rem);

  /* Compatibility aliases used in existing styles */
  --ink: var(--text);
  --ink-soft: var(--text-muted);
  --card: var(--card-bg);
  --success: #5b8f66;
  --warning: #c77354;
  --shell: var(--bg-warm);
  --surface: var(--card-flipped);
  --line: var(--card-border);
  --elev-shadow: 0 8px 20px var(--shadow);
  /* Spacing scale */
  --space-xs: 6px;
  --space-sm: 10px;
  --space-md: 16px;
  --space-lg: 22px;
}

html,
body {
  width: 100%;
  height: 100%;
}

body {
  font-family: "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg-primary);
  min-height: 100%;
  padding: 8px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  overflow: auto;
}

.activity {
  width: 100%;
  max-width: 1080px;
  height: 760px;
  min-height: 760px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  transform: none;
  transition: none;
}

body.is-embedded {
  padding: 0;
  overflow: hidden;
}

body.is-modal-open .activity {
  filter: blur(6px);
  pointer-events: none;
  user-select: none;
}

/* Typography */
h1,
h2 {
  font-family: "Roboto Slab", "Times New Roman", serif;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 0;
  color: var(--accent);
}

h2 {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

p {
  line-height: 1.6;
  color: var(--ink-soft);
}

/* Compact header bar */
.header-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 4px 4px 14px;
  box-shadow: none;
  text-align: center;
}

.header-bar__controls {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.header-bar__actions {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.info-button {
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 999px;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.info-button:hover,
.info-button:focus {
  background: var(--card-flipped);
  border-color: var(--clay-light);
}

.primary-button,
.ghost-button {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 9px 20px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
  min-height: 40px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary-button {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 14px color-mix(in srgb, var(--accent) 30%, transparent);
}

.ghost-button {
  background: var(--card-bg);
  color: var(--text-muted);
  border-color: var(--card-border);
}

.primary-button:hover,
.ghost-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 24px rgba(29, 27, 36, 0.15);
}

/* Layout stack */
.stage {
  margin-top: 12px;
  display: grid;
  gap: 10px;
  flex: 0 0 auto;
}

.inline-instructions {
  text-align: center;
  font-size: 0.93rem;
  color: var(--ink-soft);
  margin: -2px 0 2px;
}

/* Word bank strip */
.word-bank {
  background: var(--card-bg);
  border: none;
  border-radius: 20px;
  padding: 12px;
  box-shadow: 0 6px 14px var(--shadow);
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
}

.word-bank__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.word-card {
  background: var(--card);
  border-radius: 14px;
  padding: 9px 14px;
  border: 1px solid var(--card-border);
  box-shadow: 0 3px 8px var(--shadow);
  cursor: grab;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  user-select: none;
  min-width: 90px;
  text-align: center;
  touch-action: none;
}

.word-card:active {
  cursor: grabbing;
}

.word-card__kupu {
  font-family: "Roboto Slab", "Times New Roman", serif;
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: 0.02em;
}

.word-card.is-selected {
  border-color: var(--accent-soft);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-soft) 24%, transparent);
  transform: translateY(-2px);
}

.word-card.is-dragging {
  opacity: 0.6;
}

.drag-ghost {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  transform: translate(-50%, -50%);
  opacity: 0.9;
  box-shadow: 0 10px 20px rgba(29, 27, 36, 0.12);
}

/* Match grid */
.matches {
  background: transparent;
  border: none;
  border-radius: 0;
  margin-top: 0;
  padding: 0;
  box-shadow: none;
}

.matches__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.match-card {
  background: var(--card-flipped);
  border: none;
  border-radius: 18px;
  padding: 10px;
  box-shadow: 0 5px 10px var(--shadow);
  display: grid;
  gap: var(--space-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.match-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 16px var(--shadow-strong);
}

.match-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: contain;
  border-radius: 14px;
  background: var(--bg-secondary);
  max-height: 125px;
}

.match-card__english {
  font-style: italic;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--ink-soft);
  text-align: center;
  width: 100%;
}

.match-card__label {
  display: flex;
  justify-content: center;
  width: 100%;
}

/* Drop zone states */
.drop-zone {
  min-height: 36px;
  border-radius: 18px;
  border: 2px dashed color-mix(in srgb, var(--clay) 45%, transparent);
  padding: 6px 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: transparent;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.drop-zone::before {
  content: attr(data-placeholder);
  font-weight: 500;
  color: color-mix(in srgb, var(--text-muted) 62%, transparent);
}

.drop-zone.is-over::before,
.drop-zone.is-focus::before {
  content: attr(data-placeholder);
  color: var(--ink-soft);
}

.drop-zone.is-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.drop-zone.is-correct {
  border-color: var(--success);
  background: rgba(79, 138, 94, 0.12);
  color: var(--success);
}

.drop-zone.is-filled::before {
  content: "";
}

.drop-zone.is-wrong {
  border-color: var(--warning);
  background: rgba(255, 145, 90, 0.2);
}

.status {
  margin-top: 8px;
  text-align: center;
  font-weight: 600;
  color: var(--accent);
  min-height: 28px;
}

.bottom-controls {
  margin-top: 6px;
  padding-top: 6px;
  display: grid;
  justify-items: center;
  gap: 4px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--text) 20%, transparent);
  display: grid;
  place-items: center;
  z-index: 1100;
  padding: 16px;
}

.modal-card {
  width: min(460px, 100%);
  background: var(--card-bg);
  border-radius: 20px;
  box-shadow: 0 18px 38px var(--shadow-strong);
  padding: 20px 18px;
  text-align: center;
  display: grid;
  gap: 12px;
}

.modal-card h2 {
  margin-bottom: 0;
  color: var(--accent);
}

.modal-card p {
  color: var(--ink);
}

.modal-close {
  justify-self: center;
}

.is-hidden {
  display: none;
}

.sound-gate {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 14px;
  background: var(--shell);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  box-shadow: var(--elev-shadow);
  font-size: 0.9rem;
  color: var(--ink-soft);
  z-index: 999;
}

.sound-gate.is-hidden {
  display: none;
}

@media (hover: hover) and (pointer: fine) {
  .sound-gate {
    display: none;
  }
}

.word-bank.is-quiet {
  opacity: 0.4;
  filter: grayscale(0.2);
}

.shake {
  animation: shake 0.4s ease;
}

@keyframes shake {
  0% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  50% {
    transform: translateX(6px);
  }
  75% {
    transform: translateX(-4px);
  }
  100% {
    transform: translateX(0);
  }
}

/* Responsive grid for Moodle widths */
@media (min-width: 620px) {
  .matches__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .match-card img {
    max-height: 100px;
  }

  .drop-zone {
    min-height: 34px;
    font-size: 0.9rem;
  }

  .match-card {
    padding: 8px;
    gap: var(--space-xs);
  }

  .match-card__english {
    font-size: 0.9rem;
  }
}

@media (max-width: 619px) {
  .activity {
    width: 100%;
  }

  body {
    padding: var(--space-sm);
  }

  .header-bar {
    padding: var(--space-sm) var(--space-md);
  }

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

  .word-card {
    padding: 8px 12px;
  }

  .match-card img {
    max-height: 140px;
  }
}

@media (max-width: 420px) {
  .matches__grid {
    grid-template-columns: 1fr;
  }
}