/* ============================================
   Kokona TL Maker - Design System
   ============================================ */

/* CSS Variables / Design Tokens */
:root {
  /* Color Palette - Dark Theme */
  --color-bg-primary: #0d1117;
  --color-bg-secondary: #161b22;
  --color-bg-tertiary: #21262d;
  --color-bg-hover: #30363d;

  --color-accent-primary: #58a6ff;
  --color-accent-secondary: #7c3aed;
  --color-accent-success: #3fb950;
  --color-accent-warning: #d29922;
  --color-accent-danger: #f85149;

  --color-text-primary: #e6edf3;
  --color-text-secondary: #8b949e;
  --color-text-muted: #6e7681;

  --color-border: #30363d;
  --color-border-focus: #58a6ff;

  /* Timeline Specific */
  --frame-height: 20px;
  --lane-width: 109px;
  /* 50 + 24 + 45 */
  --event-col-width: 50px;
  --target-col-width: 24px;
  --cost-col-width: 60px;
  --info-col-width: 45px;
  --duration-col-width: 35px;
  --time-label-width: 80px;
  --memo-col-width: 140px;
  --lane-header-height: 60px;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;

  /* Font */
  --font-family: 'Segoe UI', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-mono: 'Consolas', 'Monaco', monospace;
}

/* Reset & Base */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 14px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow: hidden;
}

/* ============================================
   Layout
   ============================================ */

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.header__title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 600;
  background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__icon {
  width: 28px;
  height: 28px;
  object-fit: contain;
  -webkit-text-fill-color: initial;
  /* グラデーションテキストの継承を解除 */
}

.header__controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.display-mode-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Header Squad Display */
.header__squad-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.header__squad-label {
  position: relative;
  padding: var(--spacing-xs) var(--spacing-lg);
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.header__squad-label:hover {
  background: rgba(88, 166, 255, 0.2);
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 15px rgba(88, 166, 255, 0.3);
}

.header__squad-text {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent-primary);
  letter-spacing: 0.05em;
}

.header__squad-popover {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(22, 27, 34, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-normal);
  z-index: 1000;
  min-width: 250px;
}

.header__squad-label:hover .header__squad-popover {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.squad-popover__grid {
  display: grid;
  gap: var(--spacing-sm);
  justify-content: center;
}

.squad-popover__grid--6 {
  grid-template-columns: repeat(6, 1fr);
}

.squad-popover__grid--10 {
  grid-template-columns: repeat(5, 1fr);
}

.squad-popover__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.squad-popover__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-accent-primary);
  object-fit: cover;
  background: var(--color-bg-tertiary);
}

.squad-popover__icon--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  border-style: dashed;
  border-color: var(--color-border);
}

.squad-popover__name {
  font-size: 0.65rem;
  color: var(--color-text-secondary);
  max-width: 45px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}

.display-mode-controls label {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.time-limit-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.time-limit-controls label {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* Main */
.main {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.timeline-wrapper {
  height: 100%;
  overflow: auto;
  background: var(--color-bg-primary);
}

/* Timeline */
.timeline {
  display: flex;
  min-width: max-content;
  position: relative;
}

.timeline__time-column {
  position: sticky;
  left: 0;
  width: var(--time-label-width);
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  z-index: 10;
  flex-shrink: 0;
}

.timeline__time-header {
  height: 75px;
  /* 生徒行(50px) + スキル行(24px) + 境界線(1px) */
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-text-secondary);
  position: sticky;
  top: 0;
  z-index: 11;
}

.timeline__time-cell {
  height: var(--frame-height);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--spacing-sm);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  border-bottom: 1px solid transparent;
}

.timeline__time-cell--major {
  color: var(--color-text-primary);
  border-bottom-color: var(--color-border);
}

.timeline__time-cell--minor {
  color: #aab1ba;
  /* primary(#e6edf3)とmuted(#6e7681)の中間色 */
}

/* Row Highlight */
.highlight--row {
  background-color: var(--color-bg-hover) !important;
  transition: none !important;
}

.highlight--active {
  background-color: #3e444d !important;
  /* var(--color-bg-hover)より少し明るい色 */
  box-shadow: inset 0 0 0 1px var(--color-border-focus);
  z-index: 2;
  transition: none !important;
}

/* Deadline */
.timeline__row--deadline {
  background: rgba(210, 153, 34, 0.15) !important;
  /* accent-warning based */
}

.timeline__time-cell--deadline {
  color: var(--color-accent-warning);
  font-weight: bold;
  position: relative;
}

.deadline-mark {
  position: absolute;
  left: 4px;
  color: var(--color-accent-warning);
  font-weight: bold;
}

.timeline__cost-column {
  position: sticky;
  left: var(--time-label-width);
  width: var(--cost-col-width);
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  z-index: 10;
  flex-shrink: 0;
}

.timeline__cost-header {
  height: 75px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-accent-warning);
  position: sticky;
  top: 0;
  z-index: 11;
}

.timeline__cost-cell {
  height: var(--frame-height);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-primary);
  border-bottom: 1px solid transparent;
}

.timeline__cost-cell--major {
  border-bottom-color: var(--color-border);
}

.timeline__cost-cell--negative {
  color: var(--color-accent-danger);
}

.timeline__cost-cell--capped {
  color: var(--color-accent-warning);
  font-weight: bold;
}

.timeline__cost-cell--adjusted {
  background: rgba(124, 58, 237, 0.15);
  /* accent-secondary based */
}

.timeline__memo-column {
  width: var(--memo-col-width);
  background: var(--color-bg-secondary);
  border-left: 1px solid var(--color-border);
  flex-shrink: 0;
}

.timeline__memo-column--closed {
  display: none;
}

.timeline__memo-header {
  height: 75px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-text-secondary);
  position: sticky;
  top: 0;
  z-index: 11;
}

.timeline__memo-cell {
  height: var(--frame-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
}

.timeline__memo-cell--major {
  border-bottom-color: var(--color-border);
}

.timeline__memo-input {
  width: 100%;
  height: 100%;
  padding: 0 var(--spacing-xs);
  font-family: var(--font-family);
  font-size: 0.75rem;
  color: var(--color-text-primary);
  background: transparent;
  border: none;
  outline: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timeline__memo-input::placeholder {
  color: var(--color-text-muted);
}

.timeline__memo-input:focus {
  background: var(--color-bg-tertiary);
  box-shadow: inset 0 0 0 1px var(--color-border-focus);
}

/* Duration Column */
.lane__column--info:nth-child(3) {
  width: var(--duration-col-width);
  flex: none;
}

.lane__cell--duration-hit {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.lane__cell--duration-active {
  color: var(--color-accent-primary);
  font-weight: 600;
  font-size: 0.75rem;
}

.timeline__lanes {
  display: flex;
  flex: 1;
}

/* Lane */
.lane {
  width: var(--lane-width);
  border-right: 1px solid var(--color-border);
  flex-shrink: 0;
}

.lane__header-container {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
}

.lane__header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs);
  cursor: pointer;
  /* transition: background var(--transition-fast); */
  /* ハイライトの残像防止のため削除 */
  position: relative;
}

.lane__header--student {
  height: 50px;
  flex-direction: column;
  border-bottom: 1px solid var(--color-border);
}

.lane__header--skill {
  height: 24px;
  background: var(--color-bg-secondary);
}

.lane__header:hover {
  background: var(--color-bg-hover);
}

.lane__skill-name {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-accent-primary);
}

.lane__skill-placeholder {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}



.lane__student-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-accent-primary);
}

.lane__student-icon--empty {
  background: var(--color-bg-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.25rem;
}

.lane__student-name {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lane__columns {
  display: flex;
}

.lane__column {
  display: flex;
  flex-direction: column;
}

.lane__column--event {
  width: var(--event-col-width);
  flex: none;
  background: rgba(88, 166, 255, 0.03);
}

.lane__column--info {
  width: var(--info-col-width);
  flex: 1;
  /* 最後の列が余白を埋める */
  background: rgba(124, 58, 237, 0.03);
}

.lane__column--target {
  width: var(--target-col-width);
  flex: none;
}

.lane__cell {
  height: var(--frame-height);
  border-bottom: 1px solid transparent;
  position: relative;
}

.lane__cell--major {
  border-bottom-color: rgba(48, 54, 61, 0.5);
}

.lane__cell--event {
  cursor: pointer;
  /* transition: background var(--transition-fast); */
  /* ハイライトの残像防止のため削除 */
}

.lane__cell--event:hover {
  background: rgba(88, 166, 255, 0.1);
}

/* Event */
.event {
  position: absolute;
  left: 2px;
  right: 2px;
  top: 1px;
  bottom: 1px;
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  font-size: 0.65rem;
  font-weight: 600;
  color: white;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.event:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.event:active {
  cursor: grabbing;
}

.event--dragging {
  opacity: 0.7;
  z-index: 100;
}

/* 特殊状態の外観 */
.event--special-border {
  border: 2px solid var(--color-accent-danger);
}

.event--copy-bg {
  background: linear-gradient(135deg, var(--color-accent-warning) 0%, #eab308 100%);
  color: var(--color-bg-primary);
  /* 背景が明るくなるのでテキストを暗く */
}

/* Footer */
.footer {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  position: relative;
  /* 中央配置の基準 */
}

.footer__score {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--color-accent-warning);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
  z-index: 1;
}

.footer__score--visible {
  opacity: 1;
}

.footer__actions {
  display: flex;
  gap: var(--spacing-sm);
  width: 100%;
}

#toggle-memo-btn {
  margin-left: auto;
}

/* Display Mode Group */
.display-mode-group {
  display: flex;
}

.btn--group-item {
  border-radius: 0;
  border-right-width: 0;
  width: 80px;
  /* 1/30秒に合わせて固定幅 */
  padding: var(--spacing-sm) 0;
  /* 横パディングをなくして中央揃え */
  white-space: nowrap;
  /* 改行を防ぐ */
}

.btn--group-item:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}

.btn--group-item:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  border-right-width: 1px;
}

.btn--group-item.btn--active {
  background: var(--color-bg-hover);
  color: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
  z-index: 1;
  /* 重なり順を上げてborderを表示 */
}

.btn--text-small {
  font-size: 0.6rem;
  /* イベントのみボタン用 (さらに小さく) */
  letter-spacing: -0.5px;
  /* 文字間を詰める */
}

/* ============================================
   Components
   ============================================ */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent-primary) 0%, var(--color-accent-secondary) 100%);
  color: white;
}

.btn--primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-bg-hover);
}

.btn--secondary.btn--active {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
}

.btn--danger {
  background: var(--color-accent-danger);
  color: white;
}

.btn--danger:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn--icon {
  width: 32px;
  height: 32px;
  padding: 0;
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  font-size: 1.125rem;
}

.btn--icon:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
}

/* Inputs */
.input {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--color-border-focus);
}

.input--time {
  width: 100px;
  font-family: var(--font-mono);
  text-align: center;
}

.input--search {
  width: 100%;
  margin-bottom: var(--spacing-md);
}

.input--select {
  cursor: pointer;
  min-width: 120px;
}

/* ============================================
   Modal
   ============================================ */

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal--open {
  display: flex;
}

/* 複層モーダル対応: 重なり順を階層化 */
#event-settings-modal {
  z-index: 1100;
}

#student-modal,
#skill-modal {
  z-index: 1200;
}

#confirm-modal {
  z-index: 1300;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  width: 90%;
  max-width: 800px;
  max-height: 80vh;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal__content--small {
  max-width: 400px;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
}

.modal__tabs {
  display: flex;
  background: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border);
}

.modal__tab {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal__tab:hover {
  color: var(--color-text-primary);
  background: var(--color-bg-hover);
}

.modal__tab--active {
  color: var(--color-accent-primary);
  border-bottom-color: var(--color-accent-primary);
  background: rgba(88, 166, 255, 0.05);
}

.modal__body--tabbed {
  display: grid;
  padding: 0;
  /* タブペイン側にパディングを移動 */
}

.modal__tab-pane {
  grid-area: 1 / 1;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  padding: var(--spacing-md);
  height: max-content;
  transition: none !important;
}

.modal__tab-pane--active {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}

.modal__title {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.modal__body {
  padding: 10px 12px;
  overflow-y: auto;
  flex: 1;
}

/* Student Grid */
.student-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: var(--spacing-sm);
}

.student-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.student-card:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
  transform: translateY(-2px);
}

.student-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.student-card__name {
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Skill List */
.skill-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skill-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.skill-item:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
}

.skill-item__type {
  min-width: 40px;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-accent-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-sm);
}

.skill-item__type--ex {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.skill-item__type--ns {
  background: linear-gradient(135deg, #10b981, #059669);
}

.skill-item__type--ss {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.skill-item__info {
  flex: 1;
}

.skill-item__name {
  font-weight: 500;
}

.skill-item__cost {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ============================================
   Utility Classes
   ============================================ */

.hidden {
  display: none !important;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-bg-hover);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Lane Controls */
.lane__controls {
  display: flex;
  gap: 2px;
  position: absolute;
  top: 2px;
  right: 2px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.lane__header:hover .lane__controls {
  opacity: 1;
}

.lane__control-btn {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lane__control-btn:hover {
  background: var(--color-accent-danger);
  color: white;
}

/* Lane Drag Handle */
.lane__drag-handle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  font-size: 0.7rem;
  cursor: grab;
  user-select: none;
}

.lane__drag-handle:hover {
  color: var(--color-accent-primary);
}

/* Lane Dragging States */
.lane--dragging {
  opacity: 0.5;
}

.lane--drag-over {
  border-left: 3px solid var(--color-accent-primary);
}

/* Event Settings Modal */
.event-settings {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.event-settings__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.event-settings__item--top {
  align-items: flex-start;
}

.event-settings__item label {
  font-weight: 500;
  color: var(--color-text-secondary);
}

.event-settings__item select {
  width: 100%;
  max-width: none;
}

.event-settings__cost-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.event-settings__cost-options {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

.btn--toggle {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-xs);
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.btn--toggle:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.btn--toggle.btn--active {
  background: rgba(88, 166, 255, 0.15);
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
  box-shadow: 0 0 10px rgba(88, 166, 255, 0.2);
}

.event-settings__item label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: default;
  font-size: 0.9rem;
}

.event-settings__actions {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
}

.event-settings__actions .btn {
  width: 100%;
}

.event-settings__summary {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.event-settings__summary-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8rem;
  white-space: nowrap;
}

.event-settings__summary-label {
  color: var(--color-text-secondary);
  font-weight: 500;
}

.event-settings__summary-label::after {
  content: ":";
  margin-left: 1px;
}

.event-settings__summary-value {
  color: var(--color-text-primary);
  font-weight: 600;
}

.event-settings__summary-value--skill {
  color: var(--color-accent-primary);
}

/* Confirm Modal */
.confirm-modal {
  padding: var(--spacing-lg);
  text-align: center;
}

.confirm-modal__message {
  font-size: 1rem;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.confirm-modal__actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.confirm-modal__actions .btn {
  flex: 1;
  min-width: 100px;
}

/* Settings Modal */
.settings-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--spacing-xl);
}

@media (max-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr;
  }
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.settings-section__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.form-group {
  display: grid;
  grid-template-columns: 80px 1fr;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Squad Grid */
.squad-grid {
  display: grid;
  gap: var(--spacing-sm);
}

/* 6人編成: 4列 1段目:4 2段目:2(右寄せ) */
.squad-grid--6 {
  grid-template-columns: repeat(4, 1fr);
}

.squad-grid--6> :nth-child(5) {
  grid-column: 3;
}

.squad-grid--6> :nth-child(6) {
  grid-column: 4;
}

/* 10人編成: 6列 1段目:6 2段目:4(右寄せ) */
.squad-grid--10 {
  grid-template-columns: repeat(6, 1fr);
}

.squad-grid--10> :nth-child(7) {
  grid-column: 3;
}

.squad-grid--10> :nth-child(8) {
  grid-column: 4;
}

.squad-grid--10> :nth-child(9) {
  grid-column: 5;
}

.squad-grid--10> :nth-child(10) {
  grid-column: 6;
}

.squad-slot {
  aspect-ratio: 1;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  overflow: hidden;
  position: relative;
  background: var(--color-bg-alt);
  min-width: 50px;
}

.squad-slot:hover {
  border-color: var(--color-accent-primary);
  background: rgba(88, 166, 255, 0.05);
}

.squad-slot--filled {
  border: 1px solid var(--color-border);
}

.squad-slot--dragging {
  opacity: 0.4;
  cursor: grabbing;
}

.squad-slot--drag-over {
  border-color: var(--color-accent-primary);
  background: rgba(88, 166, 255, 0.1);
  box-shadow: 0 0 10px rgba(88, 166, 255, 0.2);
}

.squad-slot__remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
  line-height: 1;
}

.squad-slot__remove:hover {
  background: var(--color-accent-danger);
  transform: scale(1.1);
}

.squad-slot__icon {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.squad-slot__name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  font-size: 0.65rem;
  padding: 1px 2px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.squad-slot__empty {
  font-size: 1.2rem;
  color: var(--color-text-muted);
}

.squad-slot__label {
  font-size: 0.6rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Squad Size Toggle */
#settings-squad-size-group {
  display: flex;
  gap: 0;
}

#settings-squad-size-group .btn {
  flex: 1;
}

#settings-squad-size-group .btn--active {
  background: var(--color-accent-primary);
  color: white;
  border-color: var(--color-accent-primary);
}

/* Event Target Selection */
.event-target-slot {
  flex: 1;
  min-height: 48px;
  background: var(--color-bg-tertiary);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.event-target-slot:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
}

.event-target-slot--filled {
  border-style: solid;
  border-color: var(--color-accent-primary);
  background: rgba(88, 166, 255, 0.05);
}

.event-target-slot__icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 1px solid var(--color-accent-primary);
}

.event-target-slot__name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-primary);
  flex: 1;
}

.event-target-slot__student-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
}

.event-target-slot__clear {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: all var(--transition-fast);
  opacity: 0.6;
}

.event-target-slot__clear:hover {
  color: var(--color-accent-danger);
  opacity: 1;
  transform: scale(1.2);
}

.event-target-slot__empty {
  width: 100%;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Lane Target Icon */
.lane__target-icon {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 1px solid var(--color-accent-primary);
  display: block;
  margin: 1px auto;
  pointer-events: none;
}

.lane__cell--info:hover {
  background: rgba(124, 58, 237, 0.1);
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  bottom: 100%;
  left: 0;
  margin-bottom: var(--spacing-xs);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  min-width: 300px;
  max-width: 400px;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  z-index: 1000;
}

.dropdown--open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  background: none;
  border: none;
  color: var(--color-text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background var(--transition-fast);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dropdown-item:hover {
  background: var(--color-bg-hover);
  color: var(--color-text-primary);
}

.dropdown-item--active {
  color: var(--color-accent-primary);
  background: rgba(88, 166, 255, 0.05);
  font-weight: bold;
}

.dropdown-item-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.page-edit-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 1rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-edit-btn:hover {
  color: var(--color-accent-primary);
  transform: scale(1.1);
}

.page-reset-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 1rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-reset-btn:hover {
  color: var(--color-accent-warning);
  transform: scale(1.1);
}

.page-copy-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 1rem;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-copy-btn:hover:not(:disabled) {
  color: var(--color-accent-primary);
  transform: scale(1.1);
}

.page-copy-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  filter: grayscale(1);
}

.page-copy-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.page-copy-item {
  width: 100%;
  text-align: left;
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
  font-weight: 500;
}

.page-copy-item:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-left: var(--spacing-sm);
  flex-shrink: 0;
}

.page-name-text {
  pointer-events: none;
}

#page-toggle-btn {
  max-width: 250px;
}

.page-name-display {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.dropdown-toggle::after {
  margin-left: var(--spacing-xs);
}

/* ================================
   Cost Detail Modal
   ================================ */
.cost-detail__section {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  margin-bottom: 8px;
  box-shadow: var(--shadow-sm);
}

.cost-detail__section:last-child {
  margin-bottom: 0;
}

.cost-detail__section-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent-primary);
  margin-bottom: 12px;
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(88, 166, 255, 0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(88, 166, 255, 0.1);
}

.cost-detail__item {
  margin-bottom: 8px;
}

.cost-detail__label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent-primary);
  margin-bottom: 6px;
}

/* コスト上限トグル */
.cost-detail__toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cost-detail__toggle-row {
  display: flex;
  gap: 1px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.cost-detail__toggle-btn {
  flex: 1;
  padding: 6px 4px;
  background: var(--color-bg-secondary);
  border: none;
  color: var(--color-text-primary);
  cursor: pointer;
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

.cost-detail__toggle-btn:hover {
  background: var(--color-bg-hover);
}

.cost-detail__toggle-btn--active {
  background: var(--color-accent-primary);
  color: #fff;
  font-weight: 600;
}

/* コスト内訳 */
.cost-detail__breakdown-container {
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm);
}

.cost-detail__breakdown-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: var(--font-mono);
  padding: 2px 0;
}

.cost-detail__value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.cost-detail__value--spent {
  color: var(--color-accent-danger);
}

.cost-detail__value--result {
  color: var(--color-accent-success);
  padding: 4px 12px;
  background: rgba(63, 185, 80, 0.15);
  border: 1px solid rgba(63, 185, 80, 0.3);
  border-radius: var(--radius-sm);
  text-shadow: 0 0 10px rgba(63, 185, 80, 0.3);
}

.cost-detail__operator {
  color: var(--color-text-secondary);
  font-weight: 400;
}

.cost-detail__note {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* 生徒毎回復力リスト */
.cost-detail__recovery-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.cost-detail__recovery-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  padding: 6px 10px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.cost-detail__recovery-item:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
}

.cost-detail__recovery-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text-secondary);
}

.cost-detail__recovery-value {
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-text-primary);
}

.cost-detail__recovery-item--buffed {
  border-color: rgba(88, 166, 255, 0.3);
  background: rgba(88, 166, 255, 0.05);
}

.cost-detail__recovery-item--buffed .cost-detail__recovery-value {
  color: var(--color-accent-primary);
}

.cost-detail__recovery-buff {
  font-size: 0.75rem;
  margin-left: 2px;
}

/* 手動調整 */
.cost-detail__adjust {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
}

.cost-detail__adjust .input--number {
  width: 80px;
  text-align: right;
}

.btn--small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.8rem;
}