/* ==========================================================================
   COMPONENTS: HEADER, SCORE BAR, ACTION BAR, DRAWER & MODALS
   ========================================================================== */

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0 8px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 8px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.title-badge {
  font-size: 0.62rem;
  font-weight: 700;
  padding: 2px 6px;
  background: var(--accent-quartile-gradient);
  color: #ffffff;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.header-date-badge {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 1px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 5px;
}

.btn-header-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.btn-header-icon:hover {
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

.btn-header-icon:active {
  transform: scale(0.92);
}

/* ==========================================================================
   SCORE, RANK & QUARTILES PROGRESS BAR
   ========================================================================== */

.score-rank-card {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 8px 14px;
  margin-bottom: 6px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.score-rank-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.score-display {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.score-num {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}

.score-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.rank-badge-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rank-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.rank-pill.expert {
  background: var(--accent-quartile-gradient);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--accent-quartile-glow);
}

/* Rank Progress Bar */
.progress-bar-container {
  width: 100%;
  height: 5px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent-submit-gradient);
  border-radius: var(--radius-full);
  transition: width 0.4s var(--ease-smooth);
}

.progress-bar-fill.expert {
  background: var(--accent-quartile-gradient);
}

/* Quartiles 5-Segment Indicator */
.quartiles-indicator-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 6px;
  border-top: 1px solid var(--border-subtle);
}

.quartiles-counter {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.quartiles-segments {
  display: flex;
  align-items: center;
  gap: 5px;
}

.quartile-segment-pip {
  width: 28px;
  height: 9px;
  border-radius: 4px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  transition: all 0.3s var(--ease-spring);
}

.quartile-segment-pip.solved {
  background: var(--accent-quartile-gradient);
  border-color: var(--accent-quartile);
  box-shadow: 0 0 8px var(--accent-quartile-glow);
  transform: scaleY(1.15);
}

.quartile-bonus-badge {
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  background: var(--accent-quartile-gradient);
  color: #ffffff;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 6px var(--accent-quartile-glow);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* ==========================================================================
   WORDS FOUND STRIP / BUTTON
   ========================================================================== */

.words-found-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.btn-words-drawer {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.btn-words-drawer:hover {
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

.btn-words-drawer .badge-count {
  background: var(--accent-blue);
  color: #ffffff;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
}

/* ==========================================================================
   ACTION BAR (SHUFFLE, SORT, LOCK, HINT)
   ========================================================================== */

.action-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-top: 2px;
}

.btn-action {
  height: 38px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
  transition: all var(--transition-fast);
}

.btn-action:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

.btn-action:active {
  transform: translateY(1px) scale(0.96);
}

.btn-action.active {
  background: var(--bg-tertiary);
  border-color: var(--accent-quartile);
  color: var(--accent-quartile);
}

.btn-action .action-icon {
  font-size: 1.05rem;
  line-height: 1;
}

/* ==========================================================================
   WORDS FOUND DRAWER / MODAL
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

@media (min-width: 640px) {
  .modal-backdrop {
    align-items: center;
  }
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-sheet {
  background: var(--bg-secondary);
  width: 100%;
  max-width: 520px;
  max-height: 85vh;
  border-radius: 24px 24px 0 0;
  display: flex;
  flex-direction: column;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.25);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
  overflow: hidden;
}

@media (min-width: 640px) {
  .modal-sheet {
    border-radius: 20px;
    max-height: 80vh;
    transform: scale(0.95) translateY(20px);
  }
}

.modal-backdrop.open .modal-sheet {
  transform: translateY(0);
}

@media (min-width: 640px) {
  .modal-backdrop.open .modal-sheet {
    transform: scale(1) translateY(0);
  }
}

.sheet-handle {
  width: 36px;
  height: 5px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  margin: 10px auto 4px;
}

@media (min-width: 640px) {
  .sheet-handle {
    display: none;
  }
}

.sheet-header {
  padding: 14px 20px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.sheet-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.btn-close-sheet {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Tabs inside Drawer */
.sheet-tabs {
  display: flex;
  gap: 6px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto;
  scrollbar-width: none;
}

.sheet-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.tab-btn.active {
  background: var(--text-primary);
  color: var(--text-inverse);
}

/* Words List Content */
.sheet-body {
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.word-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.word-card.quartile-card {
  border-color: var(--accent-quartile);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), transparent);
}

.word-card-left {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.word-card-word {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

.word-card-tiles {
  display: flex;
  align-items: center;
  gap: 4px;
}

.tile-chip-mini {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 1px 6px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  color: var(--text-secondary);
}

.word-card-points {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-submit);
}

.word-card.quartile-card .word-card-points {
  color: var(--accent-quartile);
}

.sheet-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
}

.btn-reveal-all {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-danger);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  background: rgba(239, 68, 68, 0.1);
  transition: all var(--transition-fast);
}

.btn-reveal-all:hover {
  background: rgba(239, 68, 68, 0.18);
}

/* ==========================================================================
   TOAST NOTIFICATIONS
   ========================================================================== */

.toast-container {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: toastPop 0.3s var(--ease-spring);
  pointer-events: auto;
}

@keyframes toastPop {
  0% { transform: scale(0.8) translateY(-16px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

.toast.toast-info {
  background: var(--text-primary);
  color: var(--text-inverse);
}

.toast.toast-success {
  background: var(--accent-submit-gradient);
  color: #ffffff;
}

.toast.toast-quartile {
  background: var(--accent-quartile-gradient);
  color: #ffffff;
}

.toast.toast-warning {
  background: #f59e0b;
  color: #ffffff;
}

.toast.toast-error {
  background: var(--accent-danger);
  color: #ffffff;
}

/* Calendar & Custom Modals Content */
.puzzles-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 10px;
}

.puzzle-card-select {
  padding: 12px;
  background: var(--bg-primary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: left;
  transition: all var(--transition-fast);
}

.puzzle-card-select:hover {
  border-color: var(--accent-quartile);
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}

.puzzle-card-select.active {
  border-color: var(--accent-quartile);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), transparent);
}

.custom-builder-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.custom-quartet-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.custom-quartet-input {
  height: 38px;
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
}

.custom-quartet-input:focus {
  border-color: var(--accent-blue);
}

.btn-primary-modal {
  height: 44px;
  background: var(--accent-submit-gradient);
  color: #ffffff;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow: 0 4px 12px var(--accent-submit-glow);
  transition: all var(--transition-fast);
}

.btn-primary-modal:hover {
  transform: translateY(-1px);
}