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

:root {
  --bg-primary: #0d0d0d;
  --bg-secondary: #1a1a2e;
  --bg-card: #16213e;
  --bg-hover: #1a2744;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --accent-red: #ff3030;
  --accent-blue: #00ccff;
  --accent-green: #00cc88;
  --accent-yellow: #ffcc00;
  --border-color: #2a2a4a;
  --nav-height: 52px;
}

html, body {
  height: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* Navigation */
#navbar {
  display: flex;
  align-items: center;
  height: var(--nav-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 12px;
  gap: 4px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  -webkit-app-region: drag;
}

#navbar .nav-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-right: 12px;
  white-space: nowrap;
  -webkit-app-region: no-drag;
}

#navbar .nav-btn {
  -webkit-app-region: no-drag;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  border-radius: 4px;
  white-space: nowrap;
  transition: all 0.15s;
}

#navbar .nav-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
#navbar .nav-btn.active { background: var(--bg-card); color: var(--accent-blue); border-color: var(--border-color); }

#navbar .nav-spacer { flex: 1; }

#navbar .nav-icon-btn {
  -webkit-app-region: no-drag;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  border-radius: 4px;
  font-size: 16px;
  transition: all 0.15s;
}

#navbar .nav-icon-btn:hover { background: var(--bg-hover); color: var(--text-primary); }

/* Main container */
#app {
  position: relative;
  height: calc(100vh - var(--nav-height));
}

.page {
  display: none;
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
}

.page.active {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* Training page layout */
.training-page {
  overflow: hidden;
}

.training-canvas-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  position: relative;
  min-height: 0;
}

.training-canvas-wrap canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
}

.training-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.training-controls .btn {
  padding: 8px 20px;
  border: none;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.15s;
}

.btn-start { background: var(--accent-green); color: #000; }
.btn-start:hover { opacity: 0.85; }
.btn-start:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-stop { background: var(--accent-red); color: #fff; }
.btn-stop:hover { opacity: 0.85; }
.btn-stop:disabled { opacity: 0.4; cursor: not-allowed; }

.training-controls .info-label {
  color: var(--text-secondary);
  font-size: 12px;
  margin-left: auto;
}

.training-controls .info-value {
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  min-width: 30px;
}

.training-controls select, .training-controls input[type="range"] {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
}

.training-controls select { cursor: pointer; }

.training-controls select:focus { outline: none; border-color: var(--accent-blue); }

/* Home page */
.home-page {
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 40px;
}

.home-title {
  word-break: keep-all;
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
}

.home-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  text-align: center;
  max-width: 500px;
  line-height: 1.6;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  max-width: 860px;
  width: 100%;
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}

.mode-card:hover { background: var(--bg-hover); border-color: var(--accent-blue); transform: translateY(-1px); }

.mode-card .icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.mode-card .name {
  word-break: keep-all;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.mode-card .desc {
  word-break: keep-all;
  overflow-wrap: break-word;
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Stats page */
.stats-page {
  overflow-y: auto;
  padding: 24px;
}

.stats-page h2 {
  font-size: 20px;
  margin-bottom: 20px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px;
}

.stat-card .value {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent-blue);
}

.stat-card .label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.chart-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 16px;
  max-width: 800px;
}

.chart-wrap canvas { max-height: 250px; }

/* Device check */
.check-page {
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 40px;
}

.check-page canvas {
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

/* Settings page */
.settings-page {
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px;
}

.settings-page .setting-row {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 400px;
  width: 100%;
}

.settings-page .setting-row label {
  font-size: 13px;
  color: var(--text-secondary);
  min-width: 80px;
}

.settings-page .setting-row input[type="number"] {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 13px;
  width: 80px;
}

/* Responsive */
@media (max-width: 640px) {
  #navbar { padding: 0 6px; gap: 2px; }
  #navbar .nav-title { display: none; }
  .mode-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .training-controls { padding: 8px 10px; gap: 8px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* Touch Controls Panel (mobile) */
#touch-controls {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(13,13,13,0.92);
  border-top: 1px solid var(--border-color);
  padding: 8px 12px;
  z-index: 900;
  justify-content: center;
  gap: 10px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#touch-controls.visible {
  display: flex;
}

.touch-btn {
  padding: 12px 20px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  min-width: 56px;
  text-align: center;
  touch-action: manipulation;
  transition: all 0.12s;
  -webkit-tap-highlight-color: transparent;
}

.touch-btn:active {
  transform: scale(0.94);
  background: var(--bg-hover);
  border-color: var(--accent-blue);
}

.touch-btn.ctrl-arrow { font-size: 20px; padding: 12px 28px; }
.touch-btn.ctrl-confirm {
  background: var(--accent-green);
  color: #000;
  border-color: var(--accent-green);
  font-weight: 700;
  padding: 12px 32px;
}
.touch-btn.ctrl-confirm:active { background: #00bb77; }

.touch-btn.ctrl-opt { flex: 1; max-width: 140px; font-size: 14px; }

.touch-btn.ctrl-dir { font-size: 22px; padding: 14px; min-width: 64px; }

/* Mobile responsive nav */
.is-mobile #navbar {
  -webkit-overflow-scrolling: touch; overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 0 8px;
  gap: 2px;
}

.is-mobile #navbar::-webkit-scrollbar { display: none; }

.is-mobile #navbar .nav-title { display: none; }

.is-mobile #navbar .nav-btn {
  font-size: 11px;
  padding: 6px 8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.is-mobile #navbar .nav-icon-btn { flex-shrink: 0; }

.is-mobile .training-controls {
  padding: 6px 8px;
  gap: 6px;
  flex-wrap: nowrap;
  -webkit-overflow-scrolling: touch; overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.is-mobile .training-controls::-webkit-scrollbar { display: none; }

.is-mobile .training-controls .btn {
  font-size: 12px;
  padding: 6px 14px;
  flex-shrink: 0;
}

.is-mobile .training-controls select {
  font-size: 11px;
  padding: 3px 6px;
  flex-shrink: 0;
}

.is-mobile .training-controls .info-label,
.is-mobile .training-controls .info-value {
  font-size: 11px;
  flex-shrink: 0;
}

.is-mobile .training-controls .nav-icon-btn {
  width: 28px;
  height: 28px;
  font-size: 14px;
  flex-shrink: 0;
}

.is-mobile .mode-grid {
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  max-width: 100%;
}

.is-mobile .mode-card {
  padding: 14px 10px;
}

.is-mobile .mode-card .icon { font-size: 22px; }
.is-mobile .mode-card .name { font-size: 13px; }
  word-break: keep-all;
.is-mobile .mode-card .desc { font-size: 10px; }
  word-break: keep-all;
  overflow-wrap: break-word;

.is-mobile .home-page { padding: 20px 12px; gap: 20px; }
.is-mobile .home-title { font-size: 22px; }
  word-break: keep-all;
.is-mobile .home-subtitle { font-size: 12px; }

.is-mobile .training-canvas-wrap { min-height: 0; }

.is-mobile .stats-page { padding: 12px; }
.is-mobile .stats-summary { grid-template-columns: 1fr 1fr; gap: 8px; }


/* Mobile adjustments */
@media (max-width: 640px) {
  #navbar { padding: 0 6px; }
  #navbar .nav-title { display: none; }
  .training-controls { padding: 6px 8px; gap: 6px; }
}

/* Tutorial Overlay */
#tutorial-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.75);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

#tutorial-overlay.visible {
  display: flex;
}

#tutorial-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  max-width: 480px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 28px;
  position: relative;
}

#tutorial-modal .tut-title {
  word-break: keep-all;
  overflow-wrap: break-word;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}

#tutorial-modal .tut-subtitle {
  word-break: keep-all;
  overflow-wrap: break-word;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

#tutorial-modal .tut-section {
  margin-bottom: 16px;
}

#tutorial-modal .tut-section-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

#tutorial-modal .tut-section p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
}

#tutorial-modal .tut-key {
  display: inline-block;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  padding: 1px 6px;
  font-size: 11px;
  font-family: monospace;
  margin: 0 2px;
  color: var(--accent-yellow);
}

#tutorial-modal .tut-shortcuts {
  list-style: none;
  padding: 0;
}

#tutorial-modal .tut-shortcuts li {
  font-size: 13px;
  padding: 4px 0;
  color: var(--text-primary);
}

#tutorial-modal .tut-shortcuts li span {
  color: var(--accent-yellow);
  font-family: monospace;
  font-size: 12px;
}

#tutorial-modal .tut-btn {
  display: block;
  width: 100%;
  padding: 10px;
  margin-top: 20px;
  background: var(--accent-blue);
  color: #000;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}

#tutorial-modal .tut-btn:hover { opacity: 0.85; }

#tutorial-modal .tut-steps {
  padding-left: 18px;
  margin: 0;
}

#tutorial-modal .tut-steps li {
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 4px;
  color: var(--text-primary);
}

#tutorial-modal .tut-difficulty {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

#tutorial-modal .tut-difficulty span {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

/* Patient Management */
.patient-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 8px 12px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.patient-selector label {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.patient-selector select {
  flex: 1;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 13px;
}
.btn-sm {
  font-size: 11px !important;
  padding: 3px 10px !important;
}

.patient-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}
.form-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.form-section-label {
  font-size: 12px;
  color: var(--accent-blue);
  margin: 12px 0 6px;
  font-weight: 500;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 8px;
}
.form-row label {
  font-size: 11px;
  color: var(--text-secondary);
}
.form-row input,
.form-row select,
.form-row textarea {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 6px 8px;
  font-size: 13px;
  font-family: inherit;
}
.form-row textarea {
  resize: vertical;
}
.form-row-pair {
  display: flex;
  gap: 8px;
}
.form-row-pair .form-row {
  flex: 1;
}
.form-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.patient-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: border-color 0.2s;
}
.patient-card:hover {
  border-color: var(--accent-blue);
}
.patient-card.active {
  border-color: var(--accent-green);
  box-shadow: 0 0 0 1px var(--accent-green);
}
.patient-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.patient-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.patient-age {
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  padding: 1px 6px;
  border-radius: 3px;
}
.patient-diag {
  font-size: 12px;
  color: var(--accent-blue);
}
.patient-card-body {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.patient-card-actions {
  display: flex;
  gap: 6px;
}
.btn-danger {
  color: var(--accent-red) !important;
  border-color: var(--accent-red) !important;
}

/* Gamification */
.game-dashboard {
  margin-bottom: 16px;
}
.game-stats-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.game-stat-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 8px;
  text-align: center;
}
.game-stat-icon {
  font-size: 20px;
  margin-bottom: 4px;
}
.game-stat-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-green);
}
.game-stat-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}
.game-progress-bar {
  position: relative;
  height: 24px;
  background: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 16px;
}
.game-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  border-radius: 12px;
  transition: width 0.5s ease;
}
.game-progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 11px;
  color: var(--text-primary);
  white-space: nowrap;
}
.game-section {
  margin-bottom: 14px;
}
.game-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.game-challenge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}
.game-challenge.completed {
  border-color: var(--accent-green);
  background: rgba(0, 204, 136, 0.08);
}
.challenge-icon {
  font-size: 20px;
}
.challenge-desc {
  flex: 1;
  font-size: 13px;
  color: var(--text-primary);
}
.challenge-status {
  font-size: 11px;
  color: var(--text-secondary);
}
.game-challenge.completed .challenge-status {
  color: var(--accent-green);
}
.game-achievements {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.game-achievement {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 12px;
}
.game-achievement.unlocked {
  border-color: var(--accent-yellow);
  background: rgba(255, 204, 0, 0.08);
}
.game-achievement.locked {
  opacity: 0.5;
}
.ach-icon {
  font-size: 14px;
}
.ach-name {
  color: var(--text-primary);
}
.game-mini-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* ICP Filing Footer */
#icp-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  padding: 6px 0;
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-top: 1px solid var(--border-color);
  z-index: 9999;
  font-size: 12px;
}
#icp-footer a {
  color: var(--text-secondary);
  text-decoration: none;
}
#icp-footer a:hover {
  color: var(--accent-blue);
  text-decoration: underline;
}