:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #f8fbff;
  --surface-3: #eef4ff;
  --text: #182131;
  --muted: #64748b;
  --line: #dbe4f0;
  --line-strong: #c8d6ea;
  --primary: #3159e0;
  --primary-soft: #e8efff;
  --success: #13794b;
  --success-soft: #e7f7ee;
  --warning: #a86500;
  --warning-soft: #fff2d9;
  --danger: #c92b42;
  --danger-soft: #ffe8ec;
  --shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
  --radius: 20px;
  --radius-sm: 14px;
  --sans: "Be Vietnam Pro", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(49, 89, 224, 0.08), transparent 24rem),
    linear-gradient(180deg, #f8fbff 0%, #eff4fb 100%);
  color: var(--text);
  font: 14px/1.5 var(--sans);
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 22px;
  display: grid;
  gap: 18px;
}

.topbar,
.summary-card,
.panel,
.progress-card,
.toast {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(219, 228, 240, 0.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 18px 20px;
}

.brand-block {
  display: flex;
  gap: 14px;
  align-items: center;
}

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #3159e0, #6a8dff);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-sub,
.summary-label,
.summary-note,
.step-note,
.field span,
.section-note,
.helper-note,
.item-meta,
.progress-note,
.subhead,
.mini-label {
  color: var(--muted);
}

.brand-sub,
.summary-label,
.field span,
.subhead,
.mini-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.topbar-actions,
.inline-actions,
.compact-row,
.toggle-row,
.filter-row,
.selected-page-badges,
.helper-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.status-wrap {
  display: grid;
  gap: 6px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.summary-card {
  padding: 16px;
}

.summary-value {
  margin-top: 10px;
  font-size: clamp(1.8rem, 2vw, 2.35rem);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.full-span {
  grid-column: 1 / -1;
}

.panel {
  padding: 18px;
}

.step-head,
.section-head,
.progress-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.step-number {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-3);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h2,
h3 {
  margin: 8px 0 0;
  letter-spacing: -0.04em;
}

h2 {
  font-size: 1.3rem;
}

h3 {
  font-size: 1.05rem;
}

.step-note,
.section-note {
  margin: 8px 0 0;
}

.field,
.field-group {
  display: grid;
  gap: 8px;
}

.field.grow {
  min-width: 0;
  flex: 1 1 280px;
}

.field.compact {
  min-width: min(100%, 280px);
}

.field-grid {
  display: grid;
  gap: 12px;
}

.field-grid.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.wide {
  grid-column: 1 / -1;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  padding: 12px 13px;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(49, 89, 224, 0.4);
  box-shadow: 0 0 0 4px rgba(49, 89, 224, 0.1);
}

textarea {
  min-height: 122px;
  resize: vertical;
}

.btn,
.filter-chip,
.suggestion-chip,
.page-card,
.item-card,
.action-grid button {
  transition: 0.18s ease;
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 11px 14px;
  font-weight: 700;
  cursor: pointer;
}

.btn:hover,
.filter-chip:hover,
.suggestion-chip:hover,
.page-card:hover,
.item-card:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-secondary {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: rgba(49, 89, 224, 0.15);
}

.btn-ghost {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.full-width {
  width: 100%;
}

.status-badge,
.helper-pill,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.status-badge.is-success,
.pill.is-success {
  color: var(--success);
  background: var(--success-soft);
}

.status-badge.is-warning,
.pill.is-warning {
  color: var(--warning);
  background: var(--warning-soft);
}

.status-badge.is-danger,
.pill.is-danger {
  color: var(--danger);
  background: var(--danger-soft);
}

.status-badge.is-muted,
.pill.is-muted {
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--line);
}

.pill.is-info,
.helper-pill {
  color: var(--primary);
  background: var(--primary-soft);
}

.selected-page-card,
.details-box,
.suggestion-box,
.page-card,
.item-card,
.empty-state {
  margin-top: 14px;
}

.selected-page-card,
.details-box,
.suggestion-box,
.item-card,
.empty-state {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-2);
  padding: 14px;
}

.selected-page-title {
  font-size: 1rem;
  font-weight: 700;
}

.selected-page-meta {
  margin-top: 6px;
  color: var(--muted);
}

.page-list,
.item-list {
  display: grid;
  gap: 10px;
  max-height: 340px;
  overflow: auto;
}

.page-card,
.item-card {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  padding: 13px;
  color: inherit;
}

.page-card.is-active {
  border-color: rgba(49, 89, 224, 0.3);
  box-shadow: 0 0 0 3px rgba(49, 89, 224, 0.08);
}

.page-title,
.item-title {
  font-weight: 700;
}

.item-meta {
  margin-top: 6px;
  font-size: 13px;
}

.details-box summary {
  cursor: pointer;
  font-weight: 700;
}

.details-box[open] summary {
  margin-bottom: 12px;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-2);
  font-weight: 600;
}

.toggle input {
  width: auto;
  margin: 0;
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.suggestion-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  padding: 9px 12px;
  cursor: pointer;
  text-align: left;
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 8px;
}

.filter-row {
  margin-top: 14px;
}

.filter-chip {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
}

.filter-chip.active {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: rgba(49, 89, 224, 0.2);
}

.planner-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 12px;
}

.planner-column {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-2);
  padding: 12px;
}

.planner-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: baseline;
  margin-bottom: 10px;
}

.planner-title {
  font-weight: 700;
}

.planner-count {
  color: var(--muted);
  font-size: 12px;
}

.planner-stack {
  display: grid;
  gap: 10px;
}

.item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.mini-btn {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.mini-btn:hover {
  border-color: var(--line-strong);
}

.mono {
  font-family: var(--mono);
}

.empty-state {
  color: var(--muted);
  text-align: center;
}

.empty-state strong {
  color: var(--text);
}

.progress-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 50;
  background: rgba(15, 23, 42, 0.22);
}

.progress-overlay[hidden] {
  display: none !important;
}

.progress-card {
  width: min(92vw, 420px);
  padding: 18px;
}

.progress-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.progress-percent {
  font-family: var(--mono);
  font-weight: 700;
}

.progress-bar {
  margin-top: 14px;
  height: 10px;
  border-radius: 999px;
  background: var(--surface-3);
  overflow: hidden;
}

.progress-fill {
  width: 0;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #3159e0, #6a8dff);
}

.toast-stack {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 55;
  display: grid;
  gap: 10px;
  width: min(92vw, 320px);
}

.toast {
  padding: 14px;
}

.toast-title {
  font-weight: 700;
}

.toast-body {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1180px) {
  .summary-grid,
  .workflow-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .planner-board {
    grid-template-columns: repeat(2, minmax(180px, 1fr));
  }
}

@media (max-width: 760px) {
  .shell {
    padding: 12px;
  }

  .topbar,
  .step-head,
  .section-head,
  .progress-header,
  .compact-row,
  .toggle-row,
  .inline-actions {
    display: grid;
  }

  .field-grid.two-col,
  .action-grid,
  .planner-board {
    grid-template-columns: 1fr;
  }

  .btn,
  .mini-btn {
    width: 100%;
  }
}