/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --green: #58CC02;
  --green-dark: #46A302;
  --green-light: #D7FFB8;
  --purple: #CE82FF;
  --purple-dark: #A855F7;
  --orange: #FF9600;
  --orange-dark: #E08600;
  --red: #FF4B4B;
  --red-dark: #E03E3E;
  --red-light: #FFE0E0;
  --blue: #1CB0F6;
  --blue-dark: #1899D6;
  --yellow: #FFC800;
  --bg: #F0F0F0;
  --bg-white: #FFFFFF;
  --text: #3C3C3C;
  --text-light: #777777;
  --border: #E5E5E5;
  --border-dark: #CDCDCD;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

html, body {
  height: 100%;
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 700;
  color: var(--text);
  background: var(--bg);
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
}

/* ===== APP CONTAINER ===== */
.app {
  max-width: 500px;
  margin: 0 auto;
  height: 100dvh;
  position: relative;
  overflow: hidden;
}

/* ===== SCREENS ===== */
.screen {
  position: absolute;
  inset: 0;
  display: none;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.screen.active {
  display: flex;
}

.screen-content {
  width: 100%;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius);
  padding: 14px 24px;
  cursor: pointer;
  transition: all 0.1s ease;
  user-select: none;
  -webkit-user-select: none;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(2px);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--green);
  color: white;
  border-bottom: 4px solid var(--green-dark);
}
.btn-primary:active { border-bottom-width: 2px; }
.btn-primary:disabled:active { border-bottom-width: 4px; transform: none; }

.btn-secondary {
  background: var(--blue);
  color: white;
  border-bottom: 4px solid var(--blue-dark);
}
.btn-secondary:active { border-bottom-width: 2px; }

.btn-outline {
  background: var(--bg-white);
  color: var(--text);
  border: 2px solid var(--border);
  border-bottom: 4px solid var(--border-dark);
}
.btn-outline:active { border-bottom-width: 2px; }

.btn-ghost {
  background: transparent;
  color: var(--text-light);
  font-size: 14px;
  text-transform: none;
  padding: 10px 16px;
}

.btn-block { width: 100%; }

.btn-lg {
  padding: 18px 28px;
  font-size: 18px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-icon { font-size: 18px; }

.btn-danger {
  background: var(--red);
  color: white;
  border-bottom: 4px solid var(--red-dark);
}

/* ===== INPUTS ===== */
.input {
  width: 100%;
  font-family: inherit;
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(28, 176, 246, 0.15);
}
.input::placeholder {
  color: var(--text-light);
  font-weight: 600;
}

.input-game {
  font-size: 28px;
  text-align: center;
  letter-spacing: 2px;
  padding: 18px;
}

/* ===== LANGUAGE TOGGLE ===== */
.lang-toggle {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 16px;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-weight: 700;
  font-size: 14px;
  color: var(--text-light);
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: 50px;
  padding: 8px 16px;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-btn.active {
  color: var(--blue);
  border-color: var(--blue);
  background: rgba(28, 176, 246, 0.08);
}
.lang-flag { font-size: 18px; }

/* ===== HOME SCREEN ===== */
.home-content {
  justify-content: center;
  align-items: center;
  gap: 20px;
  text-align: center;
  position: relative;
}

/* ===== SETTINGS BUTTON ===== */
.btn-settings {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 22px;
  cursor: pointer;
  transition: all 0.15s;
  z-index: 5;
}
.btn-settings:active { transform: scale(0.92); }

.hero { margin: 8px 0; }

.bee-mascot {
  font-size: 72px;
  animation: float 2.5s ease-in-out infinite;
  filter: drop-shadow(0 8px 16px rgba(0,0,0,0.1));
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50% { transform: translateY(-12px) rotate(3deg); }
}

.app-title {
  font-size: 42px;
  font-weight: 900;
  color: var(--text);
  line-height: 1;
  margin-top: 4px;
}

.app-subtitle {
  font-size: 16px;
  color: var(--text-light);
  font-weight: 600;
  margin-top: 4px;
}

.word-count-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 15px;
  color: var(--text-light);
}
.word-count-number {
  font-weight: 900;
  font-size: 18px;
  color: var(--purple);
}

.home-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 300px;
}

.best-score-display {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-light);
}

/* ===== SETTINGS SCREEN ===== */
.settings-section {
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.settings-label {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text);
}

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

.settings-pill {
  font-family: inherit;
  font-weight: 700;
  font-size: 15px;
  padding: 10px 20px;
  border-radius: 50px;
  border: 2px solid var(--border);
  background: var(--bg);
  color: var(--text-light);
  cursor: pointer;
  transition: all 0.15s;
}
.settings-pill.active {
  background: rgba(28, 176, 246, 0.08);
  color: var(--blue);
  border-color: var(--blue);
}
.settings-pill:active { transform: scale(0.95); }

.voice-selector-area {
  display: flex;
  gap: 8px;
  align-items: center;
}

.settings-select {
  flex: 1;
  font-size: 15px;
  padding: 10px 14px;
  appearance: auto;
}

.settings-hint {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 600;
  margin-top: 8px;
}

/* ===== ADD WORDS SCREEN ===== */
.screen-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.btn-back {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 20px;
  cursor: pointer;
  color: var(--text);
  font-family: inherit;
  transition: all 0.15s;
}
.btn-back:active { transform: scale(0.95); }

.screen-title {
  font-size: 22px;
  font-weight: 800;
  flex: 1;
}

.header-spacer { width: 40px; }

.add-section {
  margin-bottom: 24px;
}

.input-row {
  display: flex;
  gap: 8px;
}
.input-row .input { flex: 1; }
.input-row .btn { flex-shrink: 0; }

.divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 16px 0;
  color: var(--text-light);
  font-size: 14px;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 2px;
  background: var(--border);
  border-radius: 1px;
}

/* OCR */
.ocr-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px;
  color: var(--text-light);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.ocr-results {
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-top: 12px;
}
.ocr-results h3 {
  font-size: 16px;
  margin-bottom: 12px;
}

.ocr-word-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.ocr-word-chip {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--green-light);
  color: var(--green-dark);
  border: 2px solid var(--green);
  border-radius: 50px;
  padding: 6px 14px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
}
.ocr-word-chip.deselected {
  background: var(--bg);
  color: var(--text-light);
  border-color: var(--border);
}

.ocr-actions {
  display: flex;
  gap: 8px;
}

/* Generate Words */
.generate-section {
  margin-bottom: 24px;
}
.generate-title {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 12px;
  text-align: center;
  color: var(--text);
}
.level-cards {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.level-card {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-bottom: 4px solid var(--border-dark);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  transition: all 0.15s;
}
.level-card:active {
  transform: translateY(2px);
  border-bottom-width: 2px;
}
.level-card-1 { border-left: 4px solid var(--green); }
.level-card-2 { border-left: 4px solid var(--orange); }
.level-card-3 { border-left: 4px solid var(--purple); }
.level-card-custom { border-left: 4px solid var(--blue); }
.custom-word-count {
  margin-left: auto;
  background: var(--blue);
  color: white;
  font-size: 13px;
  font-weight: 800;
  min-width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.level-emoji { font-size: 32px; flex-shrink: 0; }
.level-text { display: flex; flex-direction: column; gap: 2px; }
.level-name { font-size: 16px; font-weight: 800; color: var(--text); }
.level-desc { font-size: 13px; font-weight: 600; color: var(--text-light); }

.level1-play-prompt {
  background: var(--green-light);
  border: 2px solid var(--green);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  animation: slideIn 0.3s ease;
}
.level1-play-emoji { font-size: 40px; }
.level1-play-prompt p { font-weight: 700; color: var(--text); margin: 0; }

/* Letter Tile Mode */
.tile-mode {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.tile-built-word {
  display: flex;
  gap: 4px;
  min-height: 52px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 8px;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
}
.tile-built-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 44px;
  background: var(--blue);
  color: white;
  font-size: 22px;
  font-weight: 800;
  font-family: inherit;
  border-radius: 8px;
  border-bottom: 3px solid #1590c6;
  animation: tilePopIn 0.15s ease;
}
@keyframes tilePopIn {
  0% { transform: scale(0.5); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
.tile-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 44px;
  border: 2px dashed var(--border);
  border-radius: 8px;
}
.tile-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  padding: 8px;
}
.tile-letter {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 52px;
  background: var(--bg-white);
  color: var(--text);
  font-size: 24px;
  font-weight: 800;
  font-family: inherit;
  border: 2px solid var(--border);
  border-bottom: 4px solid var(--border-dark);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.1s;
  user-select: none;
  -webkit-user-select: none;
}
.tile-letter:active {
  transform: translateY(2px);
  border-bottom-width: 2px;
}
.tile-letter.used {
  opacity: 0.2;
  pointer-events: none;
  transform: scale(0.9);
}
.tile-actions {
  display: flex;
  gap: 12px;
}

/* Word list */
.word-list-section {
  flex: 1;
}

.word-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.word-list-header h3 { font-size: 18px; }

.word-list-count {
  background: var(--purple);
  color: white;
  font-size: 13px;
  font-weight: 800;
  padding: 2px 10px;
  border-radius: 50px;
}

.word-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.word-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  animation: slideIn 0.2s ease;
}

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

.word-item-text {
  font-size: 16px;
  font-weight: 700;
}

.word-item-delete {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-light);
  font-size: 18px;
  transition: all 0.15s;
}
.word-item-delete:hover {
  background: var(--red-light);
  color: var(--red);
}

/* ===== GAME SCREEN ===== */
.game-content {
  padding-top: 16px;
}

.game-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.btn-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: none;
  border: 2px solid var(--border);
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-light);
  font-family: inherit;
  font-weight: 800;
}

.progress-bar {
  flex: 1;
  height: 16px;
  background: var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--green);
  border-radius: 8px;
  transition: width 0.4s ease;
}

.timer {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-light);
  min-width: 48px;
  text-align: right;
}

.game-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  flex: 1;
  justify-content: center;
  padding-bottom: 40px;
}

.word-counter {
  font-size: 16px;
  color: var(--text-light);
  display: flex;
  gap: 5px;
}

.speaker-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--bg-white);
  border: 2px solid var(--blue);
  border-radius: 18px;
  padding: 14px 32px;
  cursor: pointer;
  transition: all 0.15s;
  animation: pulse 2s ease-in-out infinite;
}
.speaker-btn:active {
  transform: scale(0.95);
  animation: none;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(28, 176, 246, 0.3); }
  50% { box-shadow: 0 0 0 12px rgba(28, 176, 246, 0); }
}

.speaker-icon { font-size: 32px; }
.speaker-label {
  font-size: 11px;
  color: var(--blue);
  font-weight: 700;
  font-family: inherit;
}

.game-input-area { width: 100%; }

/* Word transition */
.game-body.transitioning {
  animation: wordTransition 0.3s ease;
}
@keyframes wordTransition {
  0% { opacity: 1; }
  40% { opacity: 0.3; }
  100% { opacity: 1; }
}

/* Feedback overlay */
.feedback-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: flex-end;
  z-index: 10;
}
.feedback-overlay.show { display: flex; }

.feedback-overlay.correct { background: rgba(88, 204, 2, 0.08); }
.feedback-overlay.incorrect { background: rgba(255, 75, 75, 0.08); }

.feedback-content {
  width: 100%;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  animation: slideUp 0.25s ease;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.feedback-overlay.correct .feedback-content { background: var(--green-light); border-top: 3px solid var(--green); }
.feedback-overlay.incorrect .feedback-content { background: var(--red-light); border-top: 3px solid var(--red); }

.feedback-icon { font-size: 36px; }
.feedback-text { font-size: 20px; font-weight: 800; }
.feedback-correct { font-size: 16px; color: var(--text-light); }

.feedback-overlay.correct .feedback-text { color: var(--green-dark); }
.feedback-overlay.incorrect .feedback-text { color: var(--red-dark); }

/* ===== RESULTS SCREEN ===== */
.results-content {
  align-items: center;
  gap: 24px;
  padding-top: 40px;
}

.results-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.results-emoji {
  font-size: 56px;
  animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
  0% { transform: scale(0); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

.results-title {
  font-size: 28px;
  font-weight: 900;
}

/* ===== PERFECT SCORE CELEBRATION ===== */
.results-hero.perfect .results-emoji {
  font-size: 72px;
  animation: perfectBounce 0.8s ease, perfectPulse 1.5s ease-in-out 0.8s infinite;
}

@keyframes perfectBounce {
  0% { transform: scale(0) rotate(-20deg); }
  40% { transform: scale(1.4) rotate(10deg); }
  60% { transform: scale(0.9) rotate(-5deg); }
  80% { transform: scale(1.1) rotate(2deg); }
  100% { transform: scale(1) rotate(0deg); }
}

@keyframes perfectPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

.results-hero.perfect .results-title {
  font-size: 24px;
  background: linear-gradient(135deg, var(--yellow), var(--orange), var(--purple), var(--blue));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 2s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.score-circle {
  display: flex;
  align-items: baseline;
  justify-content: center;
  background: var(--bg-white);
  border: 4px solid var(--green);
  border-radius: 50%;
  width: 120px;
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 8px 0;
}
.score-number {
  font-size: 48px;
  font-weight: 900;
  color: var(--green-dark);
}
.score-total {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-light);
}

.score-percent {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-light);
}

.score-stars {
  font-size: 32px;
  letter-spacing: 4px;
}

.score-time {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-light);
}

.results-breakdown {
  width: 100%;
}
.results-breakdown h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.results-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.result-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.result-item.correct { border-left: 4px solid var(--green); }
.result-item.incorrect { border-left: 4px solid var(--red); }

.result-icon { font-size: 20px; flex-shrink: 0; }
.result-word { font-size: 16px; font-weight: 700; flex: 1; }
.result-typed {
  font-size: 13px;
  color: var(--red);
  text-decoration: line-through;
}

.results-actions {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 24px;
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  z-index: 100;
  transition: transform 0.3s ease;
  white-space: nowrap;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 500px) {
  .app { max-width: 100%; }
  .screen-content { padding: 20px 16px; }
  .app-title { font-size: 36px; }
  .bee-mascot { font-size: 60px; }
  .speaker-btn { padding: 12px 28px; }
  .speaker-icon { font-size: 28px; }
  .input-game { font-size: 24px; }
  .score-circle { width: 100px; height: 100px; }
  .score-number { font-size: 40px; }
  .score-total { font-size: 18px; }
}

@media (min-width: 501px) {
  .app {
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
  }
}

/* ===== EMPTY STATE ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 32px 16px;
  color: var(--text-light);
  text-align: center;
}
.empty-state-icon { font-size: 40px; opacity: 0.5; }
.empty-state-text { font-size: 15px; }

/* ===== SHARE COPIED ===== */
.share-copied {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  padding: 32px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  text-align: center;
  z-index: 99;
  animation: bounceIn 0.3s ease;
}