@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

:root {
  --bg: #f3f4f8;
  --card-bg: rgba(255, 255, 255, 0.78);
  --card-border: rgba(93, 107, 130, 0.12);
  --accent: #007aff;
  --accent-soft: rgba(0, 122, 255, 0.12);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --shadow-soft: 0 24px 40px rgba(15, 23, 42, 0.12);
  --radius-large: 24px;
  --radius-medium: 16px;
  --radius-small: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: linear-gradient(135deg, #e3ebff 0%, #f8f9fb 35%, #eef5ff 100%);
  color: var(--text-primary);
  min-height: 100vh;
}

.app-shell {
  max-width: 1600px;
  margin: 0 auto;
  padding: 32px 40px 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  background: var(--card-bg);
  backdrop-filter: blur(18px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 17px;
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.16), rgba(0, 122, 255, 0.36));
  color: var(--accent);
  font-size: 20px;
  font-weight: 600;
}

.brand h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.subtitle {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--text-secondary);
}

.primary-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.filters {
  display: grid;
  grid-template-columns: minmax(0, 2.8fr) repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: end;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-large);
  padding: 24px 28px;
  box-shadow: var(--shadow-soft);
}

.filters label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.filters input,
.filters select {
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: var(--radius-small);
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.filters input:focus,
.filters select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.date-inputs {
  display: flex;
  align-items: center;
  gap: 10px;
}

.date-inputs input {
  flex: 1 1 0;
  min-width: 0;
}

.date-inputs span {
  white-space: nowrap;
  font-size: 12px;
  color: var(--text-secondary);
}

.search-box {
  grid-column: 1 / span 2;
}

.parent-filter {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.parent-filter input {
  border-radius: var(--radius-small);
}

.tag-filter-row {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 4px;
}

.filter-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.tag-filter-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.tag-toggle-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  flex: 1;
}

.tag-toggle {
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  padding: 6px 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border 0.2s ease, box-shadow 0.2s ease;
}

.tag-toggle:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.tag-toggle.active {
  background: linear-gradient(135deg, #007aff, #0a84ff);
  color: #f8fafc;
  border-color: transparent;
  box-shadow: 0 14px 26px rgba(10, 132, 255, 0.28);
}

.tag-toggle-empty {
  font-size: 12px;
  color: var(--text-secondary);
}

.selection-toolbar {
  display: none;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-large);
  padding: 18px 24px;
  box-shadow: var(--shadow-soft);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.selection-toolbar.active {
  display: flex;
  opacity: 1;
  pointer-events: all;
}
body.parent-view-mode .status-dock,
body.parent-view-mode .board,
body.parent-view-mode .selection-toolbar {
  display: none !important;
}

body.parent-view-mode .parent-view {
  display: flex;
}


.selection-summary {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-secondary);
}

.selection-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.selection-status {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-secondary);
}

.status-button-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.status-dock {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
}

.status-chip {
  position: relative;
  padding: 14px 20px;
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-family: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease, background 0.2s ease;
  cursor: pointer;
  outline: none;
  color: var(--text-primary);
}

.status-chip:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 20px rgba(15, 23, 42, 0.12);
}

.status-chip:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.status-chip.active {
  background: linear-gradient(135deg, rgba(0, 122, 255, 0.2), rgba(10, 132, 255, 0.36));
  border-color: rgba(0, 122, 255, 0.25);
  box-shadow: 0 16px 24px rgba(10, 132, 255, 0.18);
}

.status-chip-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: left;
}

.status-chip-text strong {
  font-weight: 600;
  font-size: 14px;
}

.status-chip-text span {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.status-chip.active .status-chip-text span {
  color: rgba(15, 23, 42, 0.7);
}

.status-chip-count {
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.18);
  color: var(--text-secondary);
}

.status-chip.active .status-chip-count {
  background: rgba(255, 255, 255, 0.4);
  color: var(--accent);
}

.board {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.column {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 420px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-large);
  padding: 24px 20px;
  box-shadow: var(--shadow-soft);
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 14px;
  color: var(--text-secondary);
}

.column-count {
  background: rgba(148, 163, 184, 0.16);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
}

.column-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

.column-body.empty::before {
  content: "\u3053\u306E\u30B9\u30C6\u30FC\u30BF\u30B9\u306E\u30BF\u30B9\u30AF\u306F\u3042\u308A\u307E\u305B\u3093";
  display: grid;
  place-items: center;
  border: 1px dashed rgba(15, 23, 42, 0.12);
  border-radius: var(--radius-medium);
  padding: 40px;
  color: rgba(15, 23, 42, 0.45);
  font-size: 13px;
  letter-spacing: 0.05em;
}

.task-card {
  background: rgba(255, 255, 255, 0.82);
  border-radius: var(--radius-large);
  border: 1px solid rgba(226, 232, 240, 0.9);
  padding: 18px 22px;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 100%;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.task-card.highlighted {
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.32);
}

.task-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.title-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.task-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.task-select {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  display: none;
}

body.selection-mode .task-select {
  display: block;
}

body.selection-mode .task-card {
  padding-top: 26px;
}

.status-quick-buttons {
  display: flex;
  gap: 6px;
}

.status-quick-buttons button {
  border: none;
  padding: 6px 10px;
  border-radius: var(--radius-small);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: rgba(148, 163, 184, 0.16);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.status-quick-buttons button:hover {
  background: var(--accent);
  color: white;
}

.task-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}

.task-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.task-body > div {
  padding: 12px;
  border-radius: var(--radius-small);
  background: rgba(15, 23, 42, 0.03);
  font-size: 13px;
  line-height: 1.6;
  min-height: 64px;
}

.task-body .resource-link {
  grid-column: span 2;
  color: var(--accent);
  font-size: 13px;
  text-decoration: none;
  word-break: break-all;
}

.task-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.task-tag {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  background: rgba(0, 122, 255, 0.14);
  color: var(--accent);
}

.task-children {
  border-left: 2px solid rgba(0, 122, 255, 0.16);
  padding-left: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.task-child {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.task-footer {
  display: flex;
  gap: 8px;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn.primary {
  background: linear-gradient(135deg, #007aff, #0a84ff);
  color: #f8fafc;
  box-shadow: 0 14px 24px rgba(10, 132, 255, 0.3);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 32px rgba(10, 132, 255, 0.4);
}

.btn.ghost {
  background: rgba(15, 23, 42, 0.05);
  color: var(--text-primary);
}

.btn.ghost:hover {
  background: rgba(15, 23, 42, 0.1);
}

.btn.subtle {
  background: rgba(148, 163, 184, 0.18);
  color: var(--text-secondary);
}

.btn.subtle:hover {
  background: rgba(148, 163, 184, 0.28);
}

.btn.tiny {
  padding: 6px 16px;
  font-size: 11px;
  border-radius: var(--radius-small);
}

.btn.small {
  padding: 8px 16px;
  font-size: 12px;
}

.btn.danger {
  background: rgba(255, 59, 48, 0.16);
  color: #ff3b30;
}

.btn.danger:hover {
  background: rgba(255, 59, 48, 0.24);
}

.icon-button {
  border: none;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-secondary);
}

.task-dialog {
  border: none;
  border-radius: 32px;
  padding: 0;
  width: min(640px, 94vw);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 40px 80px rgba(15, 23, 42, 0.24);
}

.task-dialog::backdrop {
  backdrop-filter: blur(12px);
  background: rgba(15, 23, 42, 0.24);
}

.task-dialog form {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.task-dialog header,
.task-dialog footer {
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.task-dialog header {
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.task-dialog footer {
  border-top: 1px solid rgba(148, 163, 184, 0.18);
}

.task-dialog .form-body {
  padding: 24px 32px 32px;
  max-height: 70vh;
  overflow-y: auto;
  display: grid;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field input,
.field select,
.field textarea {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: var(--radius-medium);
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.88);
  font-size: 14px;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.field textarea {
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.parent-view {
  background: var(--card-bg);
  border-radius: var(--radius-large);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-soft);
  padding: 24px 28px 32px;
  display: none;
  flex-direction: column;
  gap: 16px;
}

.parent-view header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.parent-view-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.parent-view-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.parent-view-controls input {
  min-width: 220px;
}

.parent-view.active {
  display: flex;
}

.parent-clusters {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 16px;
}

.parent-cluster {
  padding: 20px 24px;
  border-radius: var(--radius-large);
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.1);
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.parent-cluster:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.14);
}

.parent-cluster.highlighted {
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.32);
  border-color: rgba(0, 122, 255, 0.24);
}

.cluster-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
}

.cluster-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cluster-title h4 {
  margin: 0;
  font-size: 16px;
  color: var(--text-primary);
}

.cluster-meta {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

.cluster-status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.status-pill {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.16);
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
}

.parent-cluster.highlighted .status-pill {
  background: rgba(0, 122, 255, 0.16);
  color: var(--accent);
}

.cluster-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.cluster-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  padding-top: 12px;
}

.cluster-child-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  font-size: 12px;
  color: var(--text-secondary);
}

.cluster-child-row .child-title {
  font-weight: 600;
  color: var(--text-primary);
}

.cluster-child-row .child-status {
  font-size: 12px;
  color: var(--text-secondary);
}

.cluster-child-empty {
  font-size: 12px;
  color: var(--text-secondary);
}

.parent-empty {
  grid-column: 1 / -1;
  padding: 28px;
  border: 1px dashed rgba(148, 163, 184, 0.4);
  border-radius: var(--radius-large);
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}

@media (max-width: 1200px) {
  .filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .search-box {
    grid-column: 1 / -1;
  }

  .tag-filter-row {
    grid-column: 1 / -1;
  }

  .filter-actions {
    justify-content: flex-start;
  }

  .selection-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .task-body {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .app-shell {
    padding: 24px;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .filters {
    grid-template-columns: 1fr;
  }

  .status-dock {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .selection-actions {
    align-items: flex-start;
  }

  .parent-view-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .parent-view-controls input {
    width: 100%;
  }
}