:root {
  --color-correct: #6aaa64;
  --color-present: #c9b458;
  --color-absent: #787c7f;
  --color-border: #d3d6da;
  --color-border-filled: #878a8c;
  --color-text: #1a1a1b;
  --color-bg: #ffffff;
  --color-key-bg: #d3d6da;
  --color-key-text: #1a1a1b;
  --color-key-bg-used: #939598;
}

* { box-sizing: border-box; }

html {
  font-size: 18px;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Helvetica Neue", Arial, "Segoe UI", sans-serif;
}

/* sticky footer: main grows to fill short pages, pushing the footer down */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

#app-header {
  flex: none;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 1150px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
}

.header-inner h1 {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0;
}

.subtitle {
  font-size: 1.1rem;
  font-weight: 400;
  color: #555;
  letter-spacing: normal;
}

.header-buttons {
  display: flex;
  gap: 8px;
}

.btn {
  padding: 9px 16px;
  border-radius: 4px;
  border: none;
  background: var(--color-text);
  color: white;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn:hover { opacity: 0.85; }

.btn:disabled,
.btn:disabled:hover {
  background: #eceef0;
  color: #9aa0a6;
  border-color: #dfe2e5;
  opacity: 1;
  cursor: not-allowed;
}

.btn-secondary {
  background: white;
  color: var(--color-text);
  border: 1px solid var(--color-border-filled);
}

.btn-small {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn-secondary.active {
  background: #3a7ca5;
  color: white;
  border-color: #3a7ca5;
}

#app-main {
  width: 100%;
  max-width: 1150px;
  margin: 0 auto;
  flex: 1 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  padding: 24px 16px 64px;
  align-items: flex-start;
}

#game-section {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

/* Board */
#board {
  display: grid;
  grid-template-rows: repeat(6, 1fr);
  gap: 6px;
}

.board-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.tile {
  width: 58px;
  height: 58px;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  font-weight: bold;
  text-transform: uppercase;
  color: var(--color-text);
  background: white;
  user-select: none;
  transition: transform 0.15s;
}

.tile.filled {
  border-color: var(--color-border-filled);
  animation: pop 0.1s ease;
}

.tile.correct { background: var(--color-correct); border-color: var(--color-correct); color: white; }
.tile.present { background: var(--color-present); border-color: var(--color-present); color: white; }
.tile.absent  { background: var(--color-absent);  border-color: var(--color-absent);  color: white; }

.tile.flip {
  animation: flip 0.5s ease forwards;
}

@keyframes flip {
  0%   { transform: rotateX(0deg); }
  50%  { transform: rotateX(90deg); }
  100% { transform: rotateX(0deg); }
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.06); }
  100% { transform: scale(1); }
}

.board-row.shake {
  animation: shake 0.5s ease;
}

@keyframes shake {
  10%, 90% { transform: translateX(-2px); }
  20%, 80% { transform: translateX(4px); }
  30%, 50%, 70% { transform: translateX(-8px); }
  40%, 60% { transform: translateX(8px); }
}

/* Keyboard */
#keyboard {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 480px;
}

.kb-row {
  display: flex;
  justify-content: center;
  gap: 6px;
}

.key {
  min-width: 32px;
  height: 50px;
  padding: 0 8px;
  border-radius: 4px;
  border: none;
  background: var(--color-key-bg);
  color: var(--color-key-text);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex: 1;
}

.key.wide { flex: 1.5; font-size: 0.8rem; }

.key.correct { background: var(--color-correct); color: white; }
.key.present { background: var(--color-present); color: white; }
.key.absent  { background: var(--color-key-bg-used); color: white; }

/* Analysis panel */
#analysis-section {
  flex: 1 1 420px;
  min-width: 320px;
}

#analysis-section h2 {
  margin-top: 0;
  font-size: 1.45rem;
}

#analysis-section h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 2px;
}

.stat-row {
  display: flex;
  gap: 16px;
  margin-bottom: 18px;
}

.stat-box {
  background: #f7f7f8;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 12px 16px;
  text-align: center;
  flex: 1;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.9rem;
  color: #555;
}

#remaining-list-details {
  margin-bottom: 18px;
  font-size: 0.95rem;
}

#remaining-list {
  margin-top: 6px;
  line-height: 1.7;
  max-height: 140px;
  overflow-y: auto;
  color: #333;
  font-size: 0.9rem;
}

/* Word search / lookup */
.search-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

#word-search-input {
  flex: 1;
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--color-border-filled);
  border-radius: 4px;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#word-search-input:focus {
  outline: 2px solid #3a7ca5;
  outline-offset: 1px;
}

.search-result {
  font-size: 1rem;
  margin-bottom: 20px;
  min-height: 1.4rem;
  line-height: 1.6;
}

.search-result.error {
  color: #b3261e;
}

.search-result .sr-word {
  font-weight: 700;
  letter-spacing: 0.03em;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
  margin-bottom: 10px;
}

th, td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border);
}

th {
  color: #555;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  white-space: nowrap;
}

th.sortable {
  cursor: pointer;
  user-select: none;
}

th.sortable:hover .th-text {
  color: #1a1a1b;
  text-decoration: underline;
}

th.sortable.sorted .th-text {
  color: #1a1a1b;
}

.toggle-row {
  font-size: 0.95rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mode-note {
  font-size: 0.85rem;
  color: #777;
  font-style: italic;
}

.loading-indicator {
  font-size: 0.85rem;
  font-weight: 400;
  color: #888;
}

/* Info icon tooltips */
.info-icon {
  display: inline-flex;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: #9aa0a6;
  color: white;
  font-size: 0.72rem;
  font-style: italic;
  font-family: Georgia, "Times New Roman", serif;
  align-items: center;
  justify-content: center;
  cursor: help;
  position: relative;
  flex-shrink: 0;
  vertical-align: middle;
}

.info-icon:hover, .info-icon:focus {
  background: #3a7ca5;
  outline: none;
}

th .info-icon {
  text-transform: none;
  margin-left: 3px;
}

.global-tooltip {
  position: fixed;
  max-width: 260px;
  width: max-content;
  background: #1a1a1b;
  color: white;
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 0.85rem;
  font-weight: 400;
  line-height: 1.4;
  padding: 8px 10px;
  border-radius: 6px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.12s ease;
  z-index: 3000;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  pointer-events: none;
}

.global-tooltip.visible {
  opacity: 1;
  visibility: visible;
}

.explainer {
  font-size: 0.9rem;
  color: #444;
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  margin-top: 20px;
  line-height: 1.5;
}

#toast-container {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

.toast {
  background: var(--color-text);
  color: white;
  padding: 10px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  animation: toast-in 0.15s ease;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Scratch-card solution reveal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  animation: overlay-in 0.15s ease;
}

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

@keyframes overlay-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.scratch-card {
  background: white;
  border-radius: 14px;
  padding: 22px 26px 26px;
  width: 360px;
  max-width: 90vw;
  text-align: center;
  position: relative;
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
  animation: card-in 0.2s ease;
}

@keyframes card-in {
  from { opacity: 0; transform: scale(0.92) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.scratch-card h3 {
  margin: 4px 0 4px;
  font-size: 1.15rem;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
  background: none;
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  color: #888;
  padding: 4px;
}

.modal-close:hover { color: var(--color-text); }

.scratch-wrap {
  position: relative;
  width: 300px;
  height: 100px;
  margin: 14px auto 10px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px var(--color-border);
}

.scratch-answer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: #fff;
  color: var(--color-correct);
}

#scratch-canvas {
  position: absolute;
  inset: 0;
  cursor: crosshair;
  touch-action: none;
}

.scratch-hint {
  font-size: 0.85rem;
  color: #777;
  margin: 6px 0 14px;
}

#app-footer {
  flex: none;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: 1150px;
  margin: 0 auto;
  padding: 18px 16px 28px;
  font-size: 0.8rem;
  color: #777;
  text-align: center;
}

.footer-inner p {
  margin: 3px 0;
}

.footer-inner a {
  color: #555;
}

@media (max-width: 720px) {
  #app-main { flex-direction: column; align-items: center; }
  #analysis-section { width: 100%; }
}