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

body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  color: #111;
}

a {
  color: #00c;
}

/* ============ TOP BAR ============ */
.top-bar {
  position: fixed;
  top: 10px;
  right: 15px;
  font-size: 13px;
  display: flex;
  gap: 8px;
  align-items: center;
  z-index: 100;
}

.top-bar a {
  color: #00c;
  text-decoration: none;
}

.top-bar a:hover {
  text-decoration: underline;
}

.top-bar .sep {
  color: #999;
}

.link-btn {
  background: none;
  border: none;
  color: #00c;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  padding: 0;
  text-decoration: underline;
}

.link-btn:hover {
  text-decoration: none;
}

/* ============ CONFIG PAGE ============ */
body.config-page {
  background: #d4d4d4;
}

.config-wrap {
  max-width: 490px;
  margin: 0 auto;
  padding: 30px 20px 80px;
}

.config-wrap h1 {
  font-size: 30px;
  font-weight: bold;
  margin-bottom: 14px;
}

.config-intro {
  margin-bottom: 22px;
  line-height: 1.5;
  font-size: 14px;
}

.op-list {
  margin-bottom: 4px;
}

.op-row {
  margin-bottom: 14px;
}

.op-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: bold;
  font-size: 14px;
}

.op-header input[type="checkbox"] {
  cursor: pointer;
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.op-header label {
  cursor: pointer;
}

.op-sub {
  margin-left: 22px;
  color: #444;
  margin-top: 3px;
  font-size: 13px;
}

.op-range {
  margin-left: 22px;
  margin-top: 4px;
  font-size: 13px;
  color: #333;
  line-height: 1.8;
}

.range-input {
  width: 46px;
  padding: 1px 4px;
  border: 1px solid #aaa;
  font-size: 13px;
  text-align: center;
  font-family: inherit;
  background: #fff;
  -moz-appearance: textfield;
}

.range-input::-webkit-outer-spin-button,
.range-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.duration-row {
  margin-top: 20px;
  margin-bottom: 20px;
  font-size: 14px;
}

.duration-row label {
  font-weight: bold;
  margin-right: 6px;
}

.duration-row select {
  padding: 2px 5px;
  border: 1px solid #aaa;
  font-size: 13px;
  font-family: inherit;
  background: white;
}

.start-row {
  display: flex;
  justify-content: flex-end;
}

.btn-start {
  padding: 4px 18px;
  background: #fff;
  border: 1px solid #888;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
}

.btn-start:hover {
  background: #eee;
}

.btn-start:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ============ GAME PAGE ============ */
body.game-page {
  background: #fff;
}

.game-hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  pointer-events: none;
  z-index: 10;
}

.game-area {
  position: fixed;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  background: #d4d4d4;
  padding: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

.question-text {
  font-size: 38px;
  font-weight: normal;
  user-select: none;
}

.answer-input {
  font-size: 32px;
  width: 160px;
  padding: 4px 10px;
  border: 2px solid #999;
  outline: none;
  font-family: inherit;
  background: #fff;
}

.answer-input:focus {
  border-color: #555;
}

.game-loading {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
  color: #666;
}

/* Game over overlay */
.gameover-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  z-index: 50;
}

.gameover-overlay h2 {
  font-size: 28px;
  font-weight: normal;
}

.gameover-score {
  font-size: 56px;
  font-weight: bold;
  line-height: 1;
}

.gameover-label {
  color: #666;
  font-size: 14px;
  margin-top: 4px;
}

/* ============ RESULTS PAGE ============ */
body.results-page {
  background: #d4d4d4;
}

.results-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 30px 20px 60px;
}

.results-wrap h1 {
  font-size: 26px;
  font-weight: bold;
  margin-bottom: 18px;
}

.save-banner {
  background: #fffde7;
  border: 1px solid #c8b400;
  padding: 10px 14px;
  margin-bottom: 18px;
  font-size: 13px;
}

.save-banner .link-btn {
  font-size: 13px;
}

.summary-cards {
  display: flex;
  gap: 14px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.summary-card {
  background: #fff;
  border: 1px solid #bbb;
  padding: 14px 20px;
  min-width: 110px;
  text-align: center;
}

.card-value {
  font-size: 34px;
  font-weight: bold;
  line-height: 1;
}

.card-label {
  font-size: 11px;
  color: #666;
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 2px solid #aaa;
}

.tab-btn {
  padding: 6px 18px;
  background: #bbb;
  border: 1px solid #aaa;
  border-bottom: none;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
  color: #333;
  margin-right: 2px;
  position: relative;
  bottom: -2px;
}

.tab-btn.active {
  background: #d4d4d4;
  font-weight: bold;
  color: #000;
  border-bottom: 2px solid #d4d4d4;
}

.tab-pane {
  display: none;
  padding: 18px 0;
}

.tab-pane.active {
  display: block;
}

/* Breakdown table */
.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background: #fff;
}

.breakdown-table th {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 2px solid #aaa;
  font-weight: bold;
  background: #eee;
}

.breakdown-table td {
  padding: 5px 10px;
  border-bottom: 1px solid #ddd;
}

.breakdown-table tr.had-mistake td {
  background: #fff5f5;
}

.mistake-yes {
  color: #c00;
}

.mistake-no {
  color: #aaa;
}

/* Feedback */
.feedback-section {
  margin-bottom: 24px;
}

.feedback-section h3 {
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 8px;
}

.feedback-list {
  list-style: none;
  font-size: 13px;
}

.feedback-list li {
  padding: 4px 0;
  border-bottom: 1px solid #bbb;
}

.op-stat-grid {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.op-stat-card {
  background: #fff;
  border: 1px solid #bbb;
  padding: 10px 14px;
  font-size: 13px;
  min-width: 130px;
}

.op-stat-name {
  font-weight: bold;
  text-transform: capitalize;
  margin-bottom: 4px;
}

.op-stat-detail {
  color: #555;
  font-size: 12px;
  line-height: 1.7;
}

.feedback-insight {
  margin-top: 10px;
  font-size: 13px;
  font-style: italic;
  color: #444;
}

/* Results actions */
.results-actions {
  margin-top: 26px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  padding: 5px 16px;
  border: 1px solid #888;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  text-decoration: none;
  color: #111;
  display: inline-block;
}

.btn:hover {
  background: #eee;
}

.btn-primary {
  background: #333;
  color: #fff;
  border-color: #333;
}

.btn-primary:hover {
  background: #555;
}

/* ============ DASHBOARD PAGE ============ */
body.dashboard-page {
  background: #d4d4d4;
}

.dashboard-wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 30px 20px 60px;
}

.dashboard-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 22px;
}

.dashboard-head h1 {
  font-size: 26px;
  font-weight: bold;
  margin-bottom: 4px;
}

.dashboard-subtitle {
  font-size: 13px;
  color: #555;
}

.stats-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.stat-card {
  background: #fff;
  border: 1px solid #bbb;
  padding: 14px 20px;
  min-width: 120px;
}

.stat-value {
  font-size: 30px;
  font-weight: bold;
  line-height: 1;
}

.stat-label {
  font-size: 11px;
  color: #666;
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.panel {
  background: #fff;
  border: 1px solid #bbb;
  padding: 18px;
  margin-bottom: 20px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 8px;
}

.panel h2 {
  font-size: 15px;
  font-weight: bold;
}

/* Chart range toggle */
.chart-range-controls {
  display: flex;
  gap: 2px;
}

.chart-range-btn {
  padding: 3px 10px;
  border: 1px solid #aaa;
  background: #eee;
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  color: #444;
}

.chart-range-btn:hover {
  background: #ddd;
}

.chart-range-btn.active {
  background: #333;
  color: #fff;
  border-color: #333;
}

/* Games table controls */
.games-controls {
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 5px;
  color: #444;
}

.page-size-select {
  padding: 2px 5px;
  border: 1px solid #aaa;
  font-size: 13px;
  font-family: inherit;
  background: white;
}

.pagination-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.page-info {
  font-size: 13px;
  color: #555;
}

.chart-container {
  position: relative;
  height: 200px;
}

.games-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.games-table th {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 2px solid #aaa;
  font-weight: bold;
}

.games-table td {
  padding: 5px 8px;
  border-bottom: 1px solid #eee;
}

.games-table a {
  color: #00c;
  text-decoration: none;
}

.games-table a:hover {
  text-decoration: underline;
}

.no-data {
  color: #777;
  font-style: italic;
  font-size: 13px;
  padding: 8px 0;
}

.auth-prompt {
  padding: 20px 0;
  font-size: 14px;
}

.auth-prompt p {
  margin-bottom: 14px;
}

/* ============ AUTH MODAL ============ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.modal {
  background: #d4d4d4;
  border: 1px solid #999;
  padding: 26px 28px 22px;
  width: 300px;
  position: relative;
}

.modal h2 {
  font-size: 18px;
  margin-bottom: 16px;
}

.auth-field {
  display: block;
  width: 100%;
  padding: 5px 8px;
  margin-bottom: 10px;
  border: 1px solid #aaa;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
}

.auth-field:focus {
  outline: 1px solid #555;
}

.auth-error {
  color: #c00;
  font-size: 12px;
  margin-bottom: 10px;
  min-height: 16px;
}

.auth-submit {
  width: 100%;
  padding: 7px;
  background: #333;
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 10px;
}

.auth-submit:hover:not(:disabled) {
  background: #555;
}

.auth-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.auth-switch {
  width: 100%;
  background: none;
  border: none;
  color: #00c;
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  text-decoration: underline;
  padding: 0;
}

.auth-switch:hover {
  text-decoration: none;
}

.modal-close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: #666;
  line-height: 1;
  padding: 0 2px;
}

.modal-close:hover {
  color: #000;
}

/* ============ PRACTICE PAGE ============ */
body.practice-page {
  background: #d4d4d4;
}

.practice-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 30px 20px 80px;
}

.practice-wrap h1 {
  font-size: 26px;
  font-weight: bold;
  margin-bottom: 14px;
}

.practice-intro {
  margin-bottom: 20px;
  line-height: 1.5;
  font-size: 14px;
}

.practice-loading {
  color: #666;
  font-size: 14px;
  font-style: italic;
  margin-bottom: 14px;
}

.practice-hint {
  font-size: 13px;
  color: #444;
  margin-bottom: 10px;
}

.picker-controls {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  margin-bottom: 10px;
}

.picker-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background: #fff;
  margin-bottom: 20px;
}

.picker-table th {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 2px solid #aaa;
  font-weight: bold;
  background: #eee;
  white-space: nowrap;
}

.picker-table td {
  padding: 5px 10px;
  border-bottom: 1px solid #ddd;
}

.picker-table td.time-cell {
  font-variant-numeric: tabular-nums;
}

.picker-table input[type="checkbox"] {
  cursor: pointer;
}

.practice-start-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

/* ── Practice session ── */
.practice-hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  z-index: 10;
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid #ddd;
}

.practice-hud .btn {
  margin-left: auto;
}

.practice-session-area {
  position: fixed;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  background: #d4d4d4;
  padding: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

.session-feedback {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid #bbb;
  padding: 10px 18px;
  font-size: 13px;
  text-align: center;
  min-width: 200px;
  max-width: 480px;
}

.session-feedback.hidden {
  display: none;
}

.session-feedback.visible {
  display: block;
}

.fb-result {
  display: block;
  font-size: 15px;
  font-weight: bold;
  margin-bottom: 4px;
}

.fb-correct {
  color: #060;
}

.fb-mistake {
  color: #c00;
}

.fb-tip {
  display: block;
  font-size: 12px;
  font-style: italic;
  color: #555;
}

/* ── Summary ── */
.summary-by-cat {
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 8px;
}

.vs-better {
  color: #060;
  font-weight: bold;
}

.vs-worse {
  color: #c00;
  font-weight: bold;
}

.vs-same {
  color: #888;
}

/* ── Feedback tips ── */
.tip {
  display: block;
  margin-top: 4px;
  padding-left: 4px;
  font-size: 12px;
  font-style: italic;
  color: #555;
}