:root {
  --color-bg: #f7f8fb;
  --color-card: #ffffff;
  --color-primary: #1d4ed8;
  --color-primary-hover: #1e40af;
  --color-primary-light: #e0e7ff;
  --color-success: #16a34a;
  --color-success-hover: #15803d;
  --color-success-soft: #dcfce7;
  --color-danger: #dc2626;
  --color-danger-hover: #b91c1c;
  --color-warning: #f59e0b;
  --color-warning-hover: #d97706;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --shadow-md: 0 12px 24px rgba(15, 23, 42, 0.08);
  --radius-3xl: 20px;
  --radius-lg: 12px;
  --radius-md: 10px;
  --radius-xl: 14px;
  --font-family: "Segoe UI", system-ui, sans-serif;
  --font-family-title: "Fredoka", "Segoe UI", system-ui, sans-serif;
  --transition-base: 0.2s ease;

  --flag-width: 104px;
  --flag-width-small: 52px;
  --flag-height-small: 40px;
  --thumb-size: 48px;
}

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

body {
  font-family: var(--font-family);
  font-size: 18px;
  background: var(--color-bg);
  color: var(--color-text);
}

header {
  padding: 28px 16px 10px;
  text-align: center;
}

.header-content {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.header-link {
  text-decoration: none;
  cursor: pointer;
}

.header-link:focus-visible {
  outline: 3px solid rgba(29, 78, 216, 0.35);
  outline-offset: 6px;
  border-radius: 12px;
}

.header-logo {
  width: 56px;
  height: 56px;
}

.header-title {
  font-family: var(--font-family-title);
  font-size: 44px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

main {
  padding: 32px;
  max-width: 1100px;
  margin: 0 auto;
}

.card {
  background: var(--color-card);
  border-radius: var(--radius-3xl);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.hidden { display: none !important; }

.status {
  margin-top: 10px;
  font-weight: 600;
}

.status-inline {
  margin-top: 0;
  min-height: 24px;
  max-width: 360px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status.error { color: var(--color-danger); }
.status.success { color: var(--color-success); }

/* Small flag frame */
.flag-frame-small {
  width: var(--flag-width-small);
  height: var(--flag-height-small);
  border-radius: var(--radius-md);
  background: var(--color-border-light);
  border: 2px solid var(--color-border);
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: 0 6px 12px rgba(15, 23, 42, 0.10);
  flex-shrink: 0;
}

.flag-frame-small img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Buttons */
.btn-primary {
  min-width: var(--flag-width);
  padding: 12px 18px;
  border: none;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  color: white;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-primary:hover { background: var(--color-primary-hover); }

.btn-success {
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-success);
  color: white;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
  min-width: 100px;
}

.btn-success:hover { background: var(--color-success-hover); }

.btn-secondary {
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-border);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-secondary:hover { background: #d1d5db; }

.btn-warning {
  padding: 12px 18px;
  border: none;
  border-radius: var(--radius-lg);
  background: var(--color-warning);
  color: white;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
  min-width: var(--flag-width);
  text-align: center;
}

.btn-warning:hover { background: var(--color-warning-hover); }

.btn-danger {
  padding: 8px 12px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-danger);
  color: white;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-danger:hover { background: var(--color-danger-hover); }

.spacer { flex: 1; }

/* Inputs */
.input {
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-family: inherit;
  background: var(--color-card);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Game config */
.config-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.config-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.config-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 20px;
  font-weight: 600;
}

.config-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.config-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.config-col {
  flex: 1 1 280px;
  min-width: 260px;
}

.section-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.option-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.option-btn {
  padding: 10px 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card);
  color: var(--color-text);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-base);
}

.option-btn:hover {
  border-color: var(--color-primary);
}

.option-btn.selected {
  border-color: var(--color-primary);
  background: #e0e7ff;
  color: var(--color-primary);
}

.mode-toggle {
  display: flex;
  background: var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 4px;
}

.mode-btn {
  flex: 1;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-base);
}

.mode-btn.selected {
  background: var(--color-card);
  color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.letters-options,
.syllables-options {
  display: none;
}

.letters-options.visible,
.syllables-options.visible {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.selection-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.selection-btn {
  padding: 6px 12px;
  border: none;
  border-radius: 8px;
  background: var(--color-border-light);
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-base);
}

.selection-btn:hover {
  background: var(--color-border);
}

.syllable-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-height: 240px;
  overflow: auto;
  padding: 4px;
}

.syllable-chip {
  padding: 8px 14px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-card);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-base);
}

.syllable-chip:hover {
  border-color: var(--color-primary);
}

.syllable-chip.selected {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: white;
}

.config-bottom {
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.config-bottom .btn-success {
  padding: 14px 48px;
  font-size: 18px;
  font-weight: 700;
}

/* Language list */
.language-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.language-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  background: var(--color-border-light);
  border-radius: var(--radius-lg);
}

/* Bigger flags only on the main menu */
.language-item .flag-frame-small {
  width: 76px;
  height: 56px;
}

.language-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  width: 140px;
}

.language-stats {
  display: flex;
  gap: 24px;
  flex: 1;
  color: var(--color-text-muted);
  font-size: 16px;
  flex-wrap: wrap;
}

.stat-value {
  font-weight: 600;
  color: var(--color-text);
}

/* Bigger action buttons on the main menu */
.language-item button {
  min-height: 44px;
}

.language-item .btn-success,
.language-item .btn-secondary {
  padding: 12px 22px;
  font-size: 16px;
  min-width: 132px;
}

@media (max-width: 700px) {
  .language-item {
    flex-wrap: wrap;
  }

  .language-name {
    width: auto;
  }

  .language-item .btn-success,
  .language-item .btn-secondary {
    flex: 1 1 160px;
  }
}

/* Admin challenge */
.card-warning {
  background: #fffbeb;
}

.challenge-layout {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.challenge-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-warning);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.challenge-equation {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
}

/* Admin panel */
.admin-layout {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.admin-top {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.gap { width: 24px; }

.input-search {
  width: 200px;
}

.input-search::placeholder {
  color: var(--color-text-muted);
}


/* Word cloud */
.word-cloud {
  --chip-col: 180px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--chip-col), var(--chip-col)));
  gap: 8px;
  justify-content: start;
  max-height: min(70vh, 520px);
  overflow: auto;
  padding: 4px;
}

/* Word chip */
.word-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  background: var(--color-border-light);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
  width: 100%;
  min-width: 0;
}

@media (max-width: 640px) {
  .word-cloud {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 641px) {
  .word-chip.is-wide {
    grid-column: span 2;
  }
}

.word-chip:hover {
  background: #eef0f4;
}

.word-chip.highlight-new {
  background: var(--color-success-soft);
  box-shadow: 0 0 0 2px rgba(22, 163, 74, 0.22);
}

.word-chip.is-updating {
  background: var(--color-primary-light);
  box-shadow: 0 0 0 2px rgba(29, 78, 216, 0.22);
}

.chip-text {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
}

.chip-word {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chip-syllables {
  font-size: 10px;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chip-actions {
  display: flex;
  gap: 3px;
  margin-left: auto;
  transition: opacity var(--transition-base);
}

@media (hover: hover) and (pointer: fine) {
  .chip-actions {
    opacity: 0;
    pointer-events: none;
  }

  .word-chip:hover .chip-actions {
    opacity: 1;
    pointer-events: auto;
  }
}

.chip-btn {
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 4px;
  background: var(--color-card);
  color: var(--color-text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition-base);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.chip-btn:disabled {
  opacity: 0.55;
  cursor: default;
}

.chip-btn.audio {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.chip-btn.audio:hover {
  background: var(--color-primary);
  color: white;
}

.chip-btn.audio:disabled:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.chip-btn.refresh {
  background: #fef3c7;
  color: var(--color-warning);
}

.chip-btn.refresh:hover {
  background: var(--color-warning);
  color: white;
}

.chip-btn.delete {
  background: #fee2e2;
  color: var(--color-danger);
}

.chip-btn.delete:hover {
  background: var(--color-danger);
  color: white;
}

@media (max-width: 720px) {
  .header-title { font-size: 34px; }
  main { padding: 18px; }
  .language-name { width: auto; }
}