* { box-sizing: border-box; }
:root { --ink: #173447; --muted: #667c86; --mint: #dff7ef; --mint-dark: #147d70; --line: #dbe7e5; --paper: #f5faf8; --white: #fff; --shadow: 0 18px 50px rgba(23,52,71,.10); }
body { margin: 0; color: var(--ink); background: linear-gradient(135deg, #edf8f5, #f9fbfa 52%, #e9f3f6); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: inherit; }
.studio-topbar { display: flex; align-items: center; justify-content: space-between; gap: 24px; max-width: 1240px; margin: 0 auto; padding: 22px 28px; }
.studio-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 850; letter-spacing: -.02em; }
.studio-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px; color: var(--white); background: var(--ink); font-size: 12px; letter-spacing: -.05em; }
.studio-nav { display: flex; flex-wrap: wrap; gap: 16px; color: var(--muted); font-size: 13px; font-weight: 700; }
.studio-nav a { text-decoration: none; }
.studio-nav a:hover { color: var(--mint-dark); }
.studio-main { max-width: 1240px; min-height: calc(100vh - 80px); margin: 0 auto; padding: 34px 28px 80px; }
.studio-hero { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
.eyebrow { margin: 0 0 8px; color: var(--mint-dark); font-size: 11px; font-weight: 850; letter-spacing: .13em; }
h1 { margin: 0; max-width: 760px; font-size: clamp(32px, 5vw, 58px); line-height: 1.02; letter-spacing: -.065em; }
h2 { margin: 0; font-size: 24px; letter-spacing: -.045em; }
.studio-copy { max-width: 680px; margin: 16px 0 0; color: var(--muted); line-height: 1.7; }
.primary-button, .secondary-button, .danger-button { display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 10px; padding: 12px 16px; font: inherit; font-weight: 800; text-decoration: none; cursor: pointer; }
.primary-button { color: var(--white); background: var(--ink); }
.secondary-button { color: var(--ink); background: var(--white); border: 1px solid var(--line); }
.danger-button { color: #9d4d42; background: #fff0ec; }
.primary-button:hover, .secondary-button:hover, .danger-button:hover { transform: translateY(-1px); }
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.project-card, .studio-card, .studio-empty { border: 1px solid rgba(219,231,229,.95); border-radius: 18px; background: rgba(255,255,255,.86); box-shadow: var(--shadow); }
.project-card { display: flex; min-height: 190px; flex-direction: column; justify-content: space-between; padding: 20px; text-decoration: none; }
.project-card:hover { border-color: #91d5c7; transform: translateY(-2px); }
.project-card h3 { margin: 0 0 10px; font-size: 19px; }
.project-card p { margin: 6px 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.status-pill { display: inline-flex; width: fit-content; padding: 5px 9px; border-radius: 99px; color: var(--mint-dark); background: var(--mint); font-size: 11px; font-weight: 850; }
.card-footer { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-top: 18px; color: var(--muted); font-size: 12px; }
.studio-empty { padding: 46px 24px; text-align: center; }
.studio-empty p { color: var(--muted); }
.studio-form { display: grid; gap: 16px; max-width: 720px; padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.9); box-shadow: var(--shadow); }
.studio-form label { display: grid; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 750; }
.studio-form input, .studio-form select, .studio-form textarea { width: 100%; padding: 12px 13px; border: 1px solid var(--line); border-radius: 10px; outline: none; color: var(--ink); background: var(--paper); font: inherit; }
.studio-form input:focus, .studio-form select:focus, .studio-form textarea:focus { border-color: var(--mint-dark); box-shadow: 0 0 0 3px rgba(20,125,112,.12); }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.studio-error { max-width: 720px; margin: 0 0 16px; padding: 13px 15px; border-radius: 10px; color: #9d4d42; background: #fff0ec; }
.detail-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .75fr); gap: 20px; align-items: start; }
.studio-card { padding: 24px; }
.detail-meta { display: grid; gap: 10px; margin-top: 18px; }
.detail-meta div { display: flex; justify-content: space-between; gap: 18px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.detail-meta span { color: var(--muted); }
.placeholder-list { display: grid; gap: 10px; margin: 18px 0 0; padding: 0; list-style: none; }
.placeholder-list li { padding: 12px; border-radius: 10px; color: var(--muted); background: var(--paper); }
.studio-loading { color: var(--muted); }
.studio-loading::before,
.plan-ai-loading::before,
.assessment-loading::before,
.plan-loading::before {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  content: "";
  animation: hc-wait-spin .75s linear infinite;
}
.studio-loading,
.plan-ai-loading,
.assessment-loading,
.plan-loading {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
@media (prefers-reduced-motion: reduce) {
  .studio-loading::before,
  .plan-ai-loading::before,
  .assessment-loading::before,
  .plan-loading::before {
    animation: none;
    border-right-color: currentColor;
    opacity: .55;
  }
}
.studio-section { margin-top: 30px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.section-heading h2 { margin: 0; }
.muted-copy { color: var(--muted); line-height: 1.6; }
.inline-error { margin: 0 0 14px; padding: 11px 13px; border-radius: 10px; color: #9d4d42; background: #fff0ec; line-height: 1.55; }
.primary-button:disabled, .secondary-button:disabled, .danger-button:disabled, .mini-button:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.project-header-card { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.project-header-card h2 { font-size: clamp(26px, 4vw, 42px); }
.project-header-meta { display: grid; min-width: 180px; gap: 10px; }
.project-header-meta > div { display: flex; justify-content: space-between; gap: 14px; padding-top: 9px; border-top: 1px solid var(--line); font-size: 13px; }
.project-header-meta > div span { color: var(--muted); }
.detail-full { margin-top: 20px; }
.side-card { display: grid; gap: 18px; }
.project-form { max-width: none; padding: 0; border: 0; box-shadow: none; background: transparent; }
.profile-card { margin-top: 20px; }
.profile-summary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-bottom: 16px; }
.profile-summary-grid > div { display: grid; gap: 4px; padding: 12px; border-radius: 10px; background: var(--paper); }
.profile-summary-grid span, .profile-summary-line span { color: var(--muted); font-size: 12px; }
.profile-summary-line { display: grid; gap: 4px; margin: 10px 0; line-height: 1.5; }
.text-link { color: var(--mint-dark); font-size: 13px; font-weight: 800; text-decoration: none; }
.version-label { color: var(--muted); font-size: 12px; font-weight: 750; white-space: nowrap; }
.scenario-panel { padding: 26px; }
.scenario-original-request {
  width: fit-content;
  max-width: 100%;
  margin: 2px 0 18px auto;
  padding: 12px 15px;
  border: 1px solid #d5e6dc;
  border-radius: 14px 14px 4px 14px;
  background: #f2f8f4;
}
.scenario-original-request > span { display: block; margin-bottom: 4px; color: var(--mint-dark); font-size: 11px; font-weight: 800; }
.scenario-original-request > p { margin: 0; color: var(--ink); font-size: 13px; line-height: 1.65; overflow-wrap: anywhere; white-space: pre-wrap; }
.scenario-editor { display: grid; gap: 16px; margin-top: 18px; }
.scenario-editor fieldset { min-width: 0; margin: 0; padding: 18px; border: 1px solid var(--line); border-radius: 14px; }
.scenario-editor legend { padding: 0 7px; color: var(--mint-dark); font-weight: 850; }
.scenario-editor fieldset:disabled { opacity: .7; }
.editor-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.scenario-editor label { display: grid; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 750; }
.scenario-editor input, .scenario-editor select, .scenario-editor textarea { width: 100%; min-width: 0; padding: 10px 11px; border: 1px solid var(--line); border-radius: 9px; outline: none; color: var(--ink); background: var(--paper); font: inherit; }
.scenario-editor textarea { line-height: 1.5; resize: vertical; }
.scenario-editor input:focus, .scenario-editor select:focus, .scenario-editor textarea:focus { border-color: var(--mint-dark); box-shadow: 0 0 0 3px rgba(20,125,112,.12); }
.repeatable-field { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.field-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--ink); font-size: 13px; font-weight: 850; }
.field-help { margin: 7px 0 10px; color: var(--muted); font-size: 12px; line-height: 1.5; }
.repeat-list { display: grid; gap: 8px; }
.repeat-row { display: grid; grid-template-columns: minmax(0, 1fr) 130px 34px; gap: 8px; align-items: center; }
.constraint-row { grid-template-columns: minmax(120px, 1fr) minmax(90px, 1fr) minmax(100px, 130px) 34px; }
.mini-button, .icon-button { border: 1px solid var(--line); border-radius: 8px; color: var(--mint-dark); background: var(--white); font: inherit; font-weight: 800; cursor: pointer; }
.mini-button { padding: 6px 10px; font-size: 12px; }
.icon-button { width: 32px; height: 32px; color: #9d4d42; font-size: 18px; line-height: 1; }
.mini-button:hover, .icon-button:hover { border-color: #91d5c7; background: var(--mint); }
.constraint-editor { margin-top: 22px; padding: 18px; border-radius: 12px; background: #fbfdfc; }
.constraint-editor h3 { margin: 0 0 12px; font-size: 16px; }
.extraction-review { display: grid; gap: 12px; margin-top: 18px; padding: 16px; border: 1px solid #b9e2d7; border-radius: 12px; background: #f5fcf9; }
.review-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--mint-dark); }
.review-heading span { color: var(--muted); font-size: 12px; }
.extraction-messages { display: grid; gap: 10px; }
.message-block { padding: 11px 12px; border-radius: 9px; background: rgba(255,255,255,.72); }
.message-block h3 { margin: 0 0 6px; font-size: 13px; }
.message-list { display: grid; gap: 4px; margin: 0; padding-left: 20px; color: var(--muted); font-size: 13px; line-height: 1.5; }
.warning-block { color: #8b6a2b; background: #fff9e9; }
.notice-line { margin: 0; color: #8b6a2b; font-size: 13px; line-height: 1.5; }
.plan-panel { margin-top: 20px; padding: 26px; }
.plan-layout { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(220px, .75fr); gap: 22px; align-items: start; }
.plan-main { min-width: 0; }
.plan-empty { margin: 0; padding: 22px; }
.plan-history { position: sticky; top: 16px; padding: 16px; border: 1px solid var(--line); border-radius: 13px; background: #fbfdfc; }
.plan-history h3, .plan-section h4, .plan-scope h4, .plan-costs h4 { margin: 0 0 12px; font-size: 15px; }
.plan-history ol { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.plan-history-item { display: grid; width: 100%; gap: 7px; padding: 11px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: var(--white); text-align: left; cursor: pointer; }
.plan-history-item:hover, .plan-history-item.selected { border-color: #8bcfc1; background: #f1faf7; }
.plan-history-item > span:first-child { display: flex; justify-content: space-between; gap: 10px; align-items: center; }
.plan-history-item small, .plan-history-item time { color: var(--muted); font-size: 11px; }
.plan-history-summary { overflow-wrap: anywhere; font-size: 12px; line-height: 1.4; }
.plan-history-item:disabled { cursor: wait; opacity: .7; }
.plan-version-notice, .plan-readonly-note { margin: 0 0 14px; padding: 10px 12px; border-radius: 9px; color: #42625a; background: #eef8f4; font-size: 13px; line-height: 1.5; }
.plan-readonly-note { margin-top: 10px; }
.plan-editor { display: grid; gap: 14px; }
.plan-editor h3 { margin: 0; font-size: 18px; }
.plan-editor label { display: grid; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 750; }
.plan-editor input, .plan-editor textarea { width: 100%; min-width: 0; padding: 10px 11px; border: 1px solid var(--line); border-radius: 9px; outline: none; color: var(--ink); background: var(--paper); font: inherit; }
.plan-editor textarea { line-height: 1.5; resize: vertical; }
.plan-editor input:focus, .plan-editor textarea:focus { border-color: var(--mint-dark); box-shadow: 0 0 0 3px rgba(20,125,112,.12); }
.plan-json-field textarea { min-height: 110px; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 12px; }
.plan-summary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 16px 0; }
.plan-summary-grid article { display: grid; gap: 5px; padding: 13px; border-radius: 10px; background: var(--paper); }
.plan-summary-grid span { color: var(--muted); font-size: 12px; }
.plan-summary-grid strong { overflow-wrap: anywhere; line-height: 1.5; }
.plan-summary-text { margin: 8px 0 16px; color: var(--muted); line-height: 1.6; }
.plan-scope, .plan-costs, .plan-section { margin-top: 16px; padding: 16px; border: 1px solid var(--line); border-radius: 12px; }
.plan-scope p { margin: 7px 0 0; line-height: 1.5; }
.plan-scope p span { color: var(--muted); font-weight: 750; }
.plan-costs ul, .plan-section ul { display: grid; gap: 8px; margin: 0; padding-left: 20px; line-height: 1.5; }
.plan-costs > ul { padding: 0; list-style: none; }
.plan-costs > ul li { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); padding: 6px 0; }
.plan-costs details { margin-top: 12px; color: var(--muted); font-size: 13px; }
.plan-costs summary { cursor: pointer; }
.plan-task-list { display: grid; gap: 10px; margin: 0; padding-left: 22px; }
.plan-task-list li { padding-left: 4px; }
.plan-task-list li > div { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }
.plan-task-list li > div span { color: var(--muted); font-size: 12px; }
.plan-task-list p, .plan-section li p { margin: 6px 0 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.plan-section .muted-copy { margin: 0; }
.plan-panel .form-actions { margin-top: 16px; }
.plan-conversation-adjust {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 14px;
  border: 1px solid #dce8e1;
  border-radius: 15px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(23, 72, 62, .09);
}
.plan-conversation-adjust .canvas-header { padding-bottom: 12px; }
.plan-conversation-adjust .canvas-header h2 { font-size: 20px; }
.plan-conversation-adjust .canvas-header .muted-copy { margin: 5px 0 0; font-size: 12px; line-height: 1.5; }
.plan-conversation-adjust form { display: grid; gap: 7px; }
.plan-chat-sr-label { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.plan-chat-input-wrap { position: relative; }
.plan-conversation-adjust textarea {
  display: block;
  width: 100%;
  min-height: 100px;
  padding: 11px 48px 43px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: #fbfdfc;
  font: inherit;
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
}
.plan-conversation-adjust textarea:focus-visible { outline: 3px solid rgba(20,125,112,.14); border-color: var(--mint-dark); background: #fff; }
.plan-chat-send {
  position: absolute;
  right: 9px;
  bottom: 9px;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  color: #fff;
  background: #176f61;
  cursor: pointer;
  transition: background-color .15s ease, transform .15s ease;
}
.plan-chat-send:hover { background: #10594e; transform: translateY(-1px); }
.plan-chat-send:focus-visible { outline: 3px solid rgba(20,125,112,.24); outline-offset: 2px; }
.plan-chat-send svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 2; }
.plan-chat-hint { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.45; }
@media (max-width: 620px) {
  .plan-conversation-adjust { padding: 14px; }
}
@media (max-width: 760px) { .plan-layout { grid-template-columns: 1fr; } .plan-history { position: static; } }
@media (max-width: 620px) { .plan-panel { padding: 18px; } .plan-summary-grid { grid-template-columns: 1fr; } }
@media (max-width: 760px) { .studio-topbar, .studio-hero { align-items: flex-start; flex-direction: column; } .studio-topbar { padding: 18px; } .studio-main { padding: 24px 18px 60px; } .detail-layout { grid-template-columns: 1fr; } .studio-nav { gap: 10px; } }
@media (max-width: 620px) { .project-header-card { flex-direction: column; } .project-header-meta { width: 100%; } .editor-grid, .profile-summary-grid { grid-template-columns: 1fr; } .repeat-row, .constraint-row { grid-template-columns: 1fr; } .icon-button { width: 100%; } .review-heading { align-items: flex-start; flex-direction: column; } }
.plan-create-actions { justify-content: center; }
.plan-generating { display: grid; gap: 4px; }
.plan-ai-loading { margin: 0; color: var(--mint-dark); font-weight: 800; line-height: 1.6; }
.plan-loading { margin: 0; }
.plan-ai-preview { display: grid; gap: 14px; }
.plan-preview-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.plan-preview-label { display: inline-flex; padding: 8px 11px; border: 1px solid #b9e2d7; border-radius: 9px; color: #12695e; background: #eef8f4; font-size: 13px; font-weight: 850; line-height: 1.45; }
.plan-preview-heading .muted-copy { margin: 8px 0 0; font-size: 13px; }
.plan-ai-preview .plan-summary-grid { margin: 0; }
.plan-ai-preview .plan-summary-grid article:first-child strong { font-size: 14px; }
.plan-ai-preview .plan-costs > ul li span { color: var(--muted); }
.plan-ai-preview .plan-costs > ul li:last-child { border-bottom: 0; font-weight: 850; }
.plan-ai-preview .plan-task-list li > div { align-items: baseline; }
.plan-preview-actions { margin-top: 4px; }
.plan-ai-infeasible { padding: 18px; border: 1px solid #ecd7b1; border-radius: 14px; background: #fffaf0; }
.plan-ai-infeasible h3 { margin: 14px 0 0; color: #795a24; font-size: 20px; }
.plan-ai-infeasible .plan-conflicts { border-color: #ecd7b1; background: #fffdf8; }
.plan-ai-infeasible .plan-conflicts li { line-height: 1.6; }
.plan-preview-warnings { border-color: #ecd7b1; background: #fffdf8; }


/* D16 — responsive Plan Canvas workspace */
.studio-workspace {
  display: grid;
  grid-template-columns: minmax(210px, .78fr) minmax(0, 1.75fr) minmax(230px, .92fr);
  gap: 16px;
  align-items: start;
  width: 100%;
  min-width: 0;
}

.studio-workspace > * {
  min-width: 0;
}

.workspace-context,
.workspace-canvas,
.workspace-versions {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,.9);
  box-shadow: var(--shadow);
  overflow-wrap: anywhere;
}

.workspace-context,
.workspace-versions {
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  padding: 14px;
  overflow: auto;
}

.workspace-canvas {
  padding: 18px;
}

.workspace-context h2,
.workspace-context h3,
.workspace-context h4,
.workspace-canvas h2,
.workspace-canvas h3,
.workspace-canvas h4,
.workspace-versions h2,
.workspace-versions h3,
.workspace-versions h4 {
  overflow-wrap: anywhere;
}

.workspace-collapsible-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 10px;
  margin: 0 0 12px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.35;
  text-align: left;
  cursor: pointer;
}

.workspace-collapsible-toggle::after {
  content: "⌄";
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 16px;
  line-height: 1;
}

.workspace-collapsible-toggle[aria-expanded="false"]::after {
  content: "›";
}

.workspace-context.is-collapsed > :not(.workspace-collapsible-toggle),
.workspace-context[data-collapsed="true"] > :not(.workspace-collapsible-toggle) {
  display: none;
}

.canvas-mode-banner,
.canvas-unsaved-guard,
.canvas-error,
.canvas-readonly {
  margin: 0 0 12px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 12px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.canvas-mode-banner {
  color: var(--mint-dark);
  background: var(--mint);
}

.canvas-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  min-width: 0;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.canvas-header > :first-child {
  min-width: 0;
}

.canvas-header h2,
.canvas-header h3 {
  margin: 0;
}

.canvas-header .eyebrow {
  margin-bottom: 5px;
}

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

.canvas-actions {
  flex: 0 0 auto;
}

.canvas-actions > :is(button, a),
.canvas-editor-actions > :is(button, a) {
  min-height: 34px;
  padding: 8px 11px;
  font-size: 12px;
}

.canvas-section {
  display: grid;
  gap: 12px;
  min-width: 0;
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

.canvas-section:first-child {
  margin-top: 0;
}

.canvas-section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
}

.canvas-section-heading > :first-child {
  min-width: 0;
}

.canvas-section-heading h3,
.canvas-section-heading h4 {
  margin: 0;
  font-size: 15px;
  letter-spacing: -.02em;
}

.canvas-section-heading p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.canvas-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 12px;
  min-width: 0;
}

.canvas-field-grid > * {
  min-width: 0;
}

.canvas-field-grid > .full-width,
.canvas-field-grid > [data-span="full"] {
  grid-column: 1 / -1;
}

.canvas-task-list,
.canvas-chip-list,
.canvas-editor-list,
.canvas-history-list {
  display: grid;
  gap: 8px;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.canvas-task-card {
  min-width: 0;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
}

.canvas-task-card > summary.canvas-task-heading {
  cursor: pointer;
  list-style: none;
}

.canvas-task-card > summary.canvas-task-heading::-webkit-details-marker {
  display: none;
}

.canvas-task-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
}

.canvas-task-heading > :first-child {
  min-width: 0;
}

.canvas-task-heading h4,
.canvas-task-heading strong {
  margin: 0;
  overflow-wrap: anywhere;
}

.canvas-task-heading small,
.canvas-task-details,
.canvas-task-details p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.canvas-task-details {
  display: grid;
  gap: 7px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.canvas-task-details p {
  margin: 0;
}

.canvas-chip-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.canvas-chip-list > li,
.canvas-chip-list > span,
.canvas-chip-list > button,
.canvas-chip-list > li > button {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 26px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--mint-dark);
  background: var(--mint);
  font: inherit;
  font-size: 11px;
  font-weight: 800;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.canvas-chip-list > button,
.canvas-chip-list > li > button {
  cursor: pointer;
}

.canvas-chip-list:empty {
  display: none;
}

.canvas-empty-state {
  display: grid;
  min-height: 84px;
  place-items: center;
  gap: 6px;
  padding: 18px 14px;
  border: 1px dashed var(--line);
  border-radius: 10px;
  color: var(--muted);
  background: var(--paper);
  text-align: center;
  line-height: 1.5;
}

.canvas-empty-state > :first-child {
  margin-top: 0;
}

.canvas-empty-state > :last-child {
  margin-bottom: 0;
}

.canvas-editor-form {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.canvas-editor-field {
  display: grid;
  gap: 6px;
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.4;
}

.canvas-editor-field > label,
.canvas-editor-field > .canvas-field-label,
.canvas-editor-field > legend {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.4;
}

.canvas-editor-field > :is(input, select, textarea),
.canvas-editor-field > label > :is(input, select, textarea) {
  width: 100%;
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  outline: none;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
  font-weight: 500;
}

.canvas-editor-field > :is(textarea),
.canvas-editor-field > label > :is(textarea) {
  min-height: 78px;
  line-height: 1.5;
  resize: vertical;
}

.canvas-editor-field.required,
.canvas-editor-field.is-required,
.canvas-editor-field[data-required="true"] {
  border-left: 3px solid var(--mint-dark);
  padding-left: 9px;
}

.canvas-editor-field.optional,
.canvas-editor-field.is-optional,
.canvas-editor-field[data-optional="true"] {
  border-left: 3px solid var(--line);
  padding-left: 9px;
}

.canvas-editor-field > label.required::after,
.canvas-editor-field > label[data-required="true"]::after,
.canvas-editor-field > .canvas-field-label.required::after,
.canvas-editor-field > .canvas-field-label[data-required="true"]::after,
.canvas-editor-field.is-required > label::after,
.canvas-editor-field[data-required="true"] > label::after {
  content: "必填";
  flex: 0 0 auto;
  color: #9d4d42;
  font-size: 11px;
  font-weight: 750;
}

.canvas-editor-field > label.optional::after,
.canvas-editor-field > label[data-optional="true"]::after,
.canvas-editor-field > .canvas-field-label.optional::after,
.canvas-editor-field > .canvas-field-label[data-optional="true"]::after,
.canvas-editor-field.is-optional > label::after,
.canvas-editor-field[data-optional="true"] > label::after {
  content: "可选";
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
}

.canvas-editor-field:has(> :required)::after {
  content: "必填";
  justify-self: end;
  color: #9d4d42;
  font-size: 11px;
  font-weight: 750;
}

.canvas-editor-field:has(> label > :required) > label::after,
.canvas-editor-field:has(> label > :required) > .canvas-field-label::after {
  content: "必填";
  flex: 0 0 auto;
  color: #9d4d42;
  font-size: 11px;
  font-weight: 750;
}

.canvas-editor-field > :is(input, select, textarea):focus-visible,
.canvas-editor-field > label > :is(input, select, textarea):focus-visible,
.studio-workspace :is(button, a, summary):focus-visible {
  border-color: var(--mint-dark);
  outline: 3px solid rgba(20,125,112,.16);
  outline-offset: 2px;
}

.canvas-editor-field > :is(input, select, textarea)[aria-invalid="true"],
.canvas-editor-field > label > :is(input, select, textarea)[aria-invalid="true"],
.canvas-editor-field.is-invalid > :is(input, select, textarea),
.canvas-editor-field.has-error > :is(input, select, textarea),
.canvas-editor-field.is-invalid > label > :is(input, select, textarea),
.canvas-editor-field.has-error > label > :is(input, select, textarea),
.canvas-editor-field > :is(input, select, textarea):user-invalid,
.canvas-editor-field > label > :is(input, select, textarea):user-invalid {
  border-color: #9d4d42;
  background: #fff0ec;
}

.canvas-editor-list > li,
.canvas-editor-row {
  min-width: 0;
}

.canvas-editor-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 8px;
  padding: 9px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--paper);
}

.canvas-editor-row > * {
  min-width: 0;
}

.canvas-editor-actions {
  margin-top: 2px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.canvas-editor-actions .plan-delete-button {
  display: inline-grid;
  width: 36px;
  min-width: 36px;
  height: 34px;
  place-items: center;
  padding: 6px;
}

.canvas-editor-actions .plan-delete-button svg {
  display: block;
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.canvas-editor-actions .plan-delete-button:hover:not(:disabled) {
  border-color: #d6a59c;
  color: #813b32;
  background: #fff4f1;
}

.canvas-derived-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  min-width: 0;
}

.canvas-derived-metrics > * {
  display: grid;
  gap: 4px;
  min-width: 0;
  padding: 10px;
  border-radius: 9px;
  background: var(--paper);
}

.canvas-derived-metrics :is(dt, span, small) {
  color: var(--muted);
  font-size: 11px;
}

.canvas-derived-metrics :is(dd, strong) {
  margin: 0;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.canvas-cost-summary {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
}

.canvas-cost-summary > :is(ul, ol, dl) {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.canvas-cost-summary > :is(ul, ol) > li,
.canvas-cost-summary > dl > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}

.canvas-cost-summary > :is(ul, ol) > li:last-child,
.canvas-cost-summary > dl > div:last-child,
.canvas-cost-summary .total,
.canvas-cost-summary [data-total="true"] {
  padding-bottom: 0;
  border-bottom: 0;
  font-weight: 850;
}

.canvas-cost-summary :is(dt, span) {
  color: var(--muted);
}

.cost-recommended-price,
.cost-grand-total {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.cost-recommended-price {
  padding: 2px 0 10px;
  border-bottom: 1px solid var(--line);
}

.cost-recommended-price strong {
  color: var(--ink);
  font-size: 18px;
  font-weight: 850;
}

.cost-price-missing {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 999px;
  color: #795a24;
  background: #fff8e6;
  font-size: 12px;
  font-weight: 750;
}

.cost-price-note {
  margin: -4px 0 2px;
}

.cost-category-list {
  display: grid;
  gap: 0;
}

.cost-category {
  min-width: 0;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
}

.cost-category > summary,
.cost-category-empty > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
  cursor: pointer;
  list-style-position: outside;
  font-size: 13px;
  font-weight: 750;
}

.cost-category-empty > div {
  cursor: default;
}

.cost-category-label {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.canvas-cost-summary .cost-category-label,
.canvas-cost-summary .cost-grand-total > span {
  color: var(--ink);
}

.cost-category-label small,
.cost-category-items small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}

.cost-category > summary > strong,
.cost-category-empty strong {
  flex: 0 0 auto;
  white-space: nowrap;
}

.cost-category > summary::after {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  content: '收起';
}

.cost-category:not([open]) > summary::after {
  content: '展开';
}

.cost-category-items {
  display: grid;
  gap: 0;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.cost-category-items > li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0 7px 18px;
  border-top: 1px solid color-mix(in srgb, var(--line) 65%, transparent);
  font-size: 12px;
}

.cost-category-items > li > span {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.cost-category-items > li > span > strong {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.cost-category-items > li > strong {
  flex: 0 0 auto;
  white-space: nowrap;
}

.cost-grand-total {
  margin-top: 2px;
  padding-top: 10px;
  border-top: 2px solid var(--line-strong, var(--line));
  font-weight: 850;
}

.cost-grand-total strong {
  font-size: 15px;
}

.canvas-history-list > li {
  min-width: 0;
}

.canvas-history-item {
  display: grid;
  width: 100%;
  gap: 6px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
  text-align: left;
  overflow-wrap: anywhere;
}

button.canvas-history-item,
a.canvas-history-item {
  cursor: pointer;
}

.canvas-history-item:hover,
.canvas-history-item:focus-visible,
.canvas-history-item.selected,
.canvas-history-item.current {
  border-color: var(--mint-dark);
  background: var(--mint);
}

.canvas-history-item.current {
  box-shadow: inset 3px 0 0 var(--mint-dark);
}

.canvas-history-item > :first-child {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  min-width: 0;
}

.canvas-history-item small,
.canvas-history-item time {
  color: var(--muted);
  font-size: 11px;
}

.canvas-history-item p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.canvas-unsaved-guard {
  color: #8b6a2b;
  background: #fff9e9;
  border-color: #ecd7b1;
}

.canvas-error {
  color: #9d4d42;
  background: #fff0ec;
  border-color: #9d4d42;
}

.canvas-readonly {
  color: #42625a;
  background: #eef8f4;
  border-color: var(--line);
}

.canvas-editor-form[aria-readonly="true"] :is(input, select, textarea),
.canvas-editor-form .canvas-readonly :is(input, select, textarea),
.canvas-editor-form :is(input, select, textarea)[readonly],
.canvas-editor-form :is(input, select, textarea):disabled {
  color: var(--muted);
  background: var(--paper);
  cursor: not-allowed;
}

@media (min-width: 1101px) {
  .workspace-collapsible-toggle {
    display: none;
  }
}

@media (max-width: 1100px) {
  .studio-workspace {
    grid-template-columns: minmax(0, 1fr) minmax(220px, .72fr);
  }

  .workspace-context {
    grid-column: 1 / -1;
    position: relative;
    top: auto;
    max-height: none;
  }

  .workspace-canvas {
    grid-column: 1;
  }

  .workspace-versions {
    grid-column: 2;
    position: relative;
    top: auto;
    max-height: none;
  }

  .workspace-collapsible-toggle {
    display: flex;
  }
}

@media (max-width: 920px) {
  .studio-workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .workspace-context,
  .workspace-canvas,
  .workspace-versions {
    grid-column: 1;
  }

  .workspace-context {
    order: 1;
  }

  .workspace-canvas {
    order: 2;
  }

  .workspace-versions {
    order: 3;
  }
}

@media (max-width: 620px) {
  .workspace-context,
  .workspace-versions {
    padding: 12px;
  }

  .workspace-canvas {
    padding: 14px;
  }

  .canvas-header {
    flex-direction: column;
    align-items: stretch;
  }

  .canvas-actions,
  .canvas-editor-actions {
    justify-content: flex-start;
  }

  .canvas-section {
    padding: 12px;
  }

  .canvas-section-heading {
    flex-direction: column;
  }

  .canvas-field-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .canvas-editor-row {
    grid-template-columns: minmax(0, 1fr);
    align-items: stretch;
  }

  .canvas-editor-row .canvas-editor-actions {
    justify-content: flex-start;
  }
}
/* D17 — saved PlanVersion assessment */
.assessment-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px;
  margin: 0 0 14px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--paper);
}

.assessment-tab {
  min-height: 36px;
  padding: 7px 10px;
  border: 0;
  border-radius: 8px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.assessment-tab:hover {
  color: var(--ink);
  background: rgba(255,255,255,.7);
}

.assessment-tab.is-active {
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 2px 8px rgba(23,52,71,.08);
}

.assessment-tab-panel {
  min-width: 0;
}

.assessment-workspace {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.assessment-toolbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.assessment-toolbar h3 {
  margin: 0;
  font-size: 16px;
}

.assessment-toolbar .muted-copy {
  margin: 5px 0 0;
  font-size: 12px;
}

.assessment-check-button {
  flex: 0 0 auto;
  min-height: 36px;
  padding: 8px 11px;
  font-size: 12px;
}

.assessment-snapshot-note,
.assessment-archived,
.assessment-frozen,
.assessment-stale {
  margin: 0;
  padding: 9px 10px;
  border-radius: 9px;
  font-size: 12px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.assessment-snapshot-note {
  color: #42625a;
  background: #eef8f4;
}

.assessment-archived {
  color: #895147;
  background: #fff0ec;
}

.assessment-frozen {
  margin: 0;
}

.assessment-stale {
  color: #795a24;
  background: #fff8e6;
}

.assessment-loading {
  margin: 0;
  padding: 12px 4px;
  font-size: 13px;
}

.assessment-error {
  display: grid;
  gap: 8px;
  margin: 0;
  overflow-wrap: anywhere;
}

.assessment-unchecked {
  min-height: 108px;
  gap: 6px;
  padding: 16px 12px;
  font-size: 12px;
}

.assessment-result {
  display: grid;
  gap: 12px;
  min-width: 0;
}

.assessment-result-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.assessment-result-label,
.assessment-completeness > div > span,
.assessment-component-wrap > span,
.assessment-check-status > div > span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.assessment-result-heading h3 {
  margin: 4px 0 0;
  font-size: 21px;
}

.assessment-version-tag {
  flex: 0 0 auto;
  padding: 4px 7px;
  border-radius: 999px;
  color: var(--muted);
  background: var(--paper);
  font-size: 10px;
  font-weight: 750;
}

.assessment-status-pass {
  color: #147d70;
}

.assessment-status-pass_with_warnings,
.assessment-status-not_applicable,
.assessment-status-unavailable,
.assessment-status-skipped {
  color: #89671f;
}

.assessment-status-fail,
.assessment-status-failed {
  color: #a34339;
}

.assessment-completeness {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fbfdfc;
}

.assessment-completeness > div:first-child {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.assessment-completeness > div:first-child strong {
  color: var(--ink);
  font-size: 22px;
  letter-spacing: -.03em;
}

.assessment-completeness > div:first-child strong small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.assessment-component-wrap {
  display: grid;
  gap: 7px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.assessment-components {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 5px 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.assessment-components li {
  display: flex;
  justify-content: space-between;
  gap: 5px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
}

.assessment-components strong {
  flex: 0 0 auto;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.assessment-check-status {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.assessment-check-status > div {
  display: grid;
  gap: 5px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
}

.assessment-check-status strong {
  font-size: 12px;
}

.assessment-result-meta {
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}

.assessment-issues,
.assessment-warnings,
.assessment-suggestions {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.assessment-issues > h3,
.assessment-warnings > h3,
.assessment-suggestions > h3 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0;
  font-size: 13px;
}

.assessment-suggestions > h3 small {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
}

.assessment-issue-group {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.assessment-issue-group > h4 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.assessment-issue-group > h4 span {
  min-width: 20px;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--paper);
  text-align: center;
  font-size: 10px;
}

.assessment-issue {
  display: grid;
  width: 100%;
  gap: 7px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.assessment-warning-item {
  cursor: default;
  background: #fffdf7;
}

.assessment-issue:hover {
  border-color: #91d5c7;
  background: #f7fcfa;
}

.assessment-issue-topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 7px;
  min-width: 0;
}

.assessment-issue-topline > strong {
  overflow-wrap: anywhere;
  font-size: 10px;
  line-height: 1.5;
}

.assessment-issue-tags {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px;
}

.assessment-source,
.assessment-severity,
.assessment-blocking {
  padding: 2px 5px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 850;
  line-height: 1.4;
}

.assessment-source {
  color: #345b70;
  background: #edf5fa;
}

.assessment-source.source-ai {
  color: #6c4f91;
  background: #f4effa;
}

.assessment-severity.severity-high {
  color: #9d4d42;
  background: #fff0ec;
}

.assessment-severity.severity-medium {
  color: #876323;
  background: #fff8e6;
}

.assessment-severity.severity-low {
  color: #42625a;
  background: #eef8f4;
}

.assessment-blocking {
  color: #fff;
  background: #a34339;
}

.assessment-issue-message,
.assessment-issue-suggestion {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.assessment-issue-suggestion {
  color: var(--muted);
  font-size: 11px;
}

.assessment-no-issues,
.assessment-suggestions > p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.assessment-suggestions ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.assessment-issue:focus-visible,
.assessment-tab:focus-visible,
.canvas-section:focus,
.canvas-task-card:focus,
.canvas-editor-row:focus {
  outline: 3px solid rgba(20,125,112,.2);
  outline-offset: 2px;
}

@media (max-width: 620px) {
  .assessment-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .assessment-check-button {
    width: 100%;
  }

  .assessment-components {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* D18 — AI re-plan preview */
.replan-workspace,
.replan-preview {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.replan-heading,
.replan-preview-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.replan-heading h3,
.replan-preview-heading h3 {
  margin: 0;
  font-size: 24px;
  letter-spacing: -.04em;
}

.replan-heading .muted-copy {
  max-width: 680px;
  margin: 8px 0 0;
}

.replan-source-tag {
  display: inline-flex;
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid #b9e2d7;
  border-radius: 9px;
  color: #12695e;
  background: #eef8f4;
  font-size: 12px;
  font-weight: 850;
  line-height: 1.4;
}

.replan-context,
.replan-form,
.replan-review,
.replan-diff,
.replan-snapshot,
.replan-conflicts,
.replan-alternatives {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--white);
}

.replan-context {
  background: #fbfdfc;
}

.replan-context h4,
.replan-conflicts h4,
.replan-alternatives h4 {
  margin: 0 0 10px;
  font-size: 15px;
}

.replan-context dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
}

.replan-context dl div {
  display: grid;
  gap: 4px;
  min-width: 0;
  padding: 10px;
  border-radius: 9px;
  background: var(--paper);
}

.replan-context dt {
  color: var(--muted);
  font-size: 12px;
}

.replan-context dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-weight: 800;
}

.replan-form {
  display: grid;
  gap: 12px;
  background: #f5fcf9;
}

.replan-review {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.replan-review-note,
.replan-review-request,
.replan-review-message {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid #c9e6dd;
  border-radius: 10px;
  color: #385f58;
  background: #f3faf7;
  font-size: 13px;
  line-height: 1.6;
}

.replan-review-request {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfdfc;
}

.replan-review-request strong {
  color: var(--muted);
  font-size: 12px;
}

.replan-review-request p {
  margin: 5px 0 0;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.replan-review-message h4 {
  margin: 0 0 6px;
  font-size: 13px;
}

.replan-review-message ul {
  margin: 0;
  padding-left: 20px;
}

.replan-review-card {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--white);
}

.replan-review-card h4 {
  margin: 0 0 12px;
  font-size: 15px;
}

.replan-review-card dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin: 0;
}

.replan-fact-row {
  display: grid;
  gap: 6px;
  min-width: 0;
  padding: 10px;
  border-radius: 9px;
  background: #f7faf9;
}

.replan-fact-row dt {
  color: var(--muted);
  font-size: 12px;
}

.replan-fact-row dd {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 13px;
}

.replan-fact-row dd strong {
  color: var(--ink);
  font-weight: 800;
}

.replan-fact-row dd small {
  color: var(--muted);
  font-size: 11px;
}

.replan-fact-change > span {
  color: var(--muted);
}

.replan-fact-change > b {
  color: var(--mint-dark);
  font-size: 12px;
}

.replan-fact-empty {
  grid-column: 1 / -1;
  padding: 10px 0;
  font-size: 13px;
}

.replan-form > label:first-child {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.replan-form textarea {
  width: 100%;
  min-height: 120px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  outline: none;
  color: var(--ink);
  background: var(--white);
  font: inherit;
  line-height: 1.6;
  resize: vertical;
}

.replan-form textarea:focus,
.replan-form input:focus {
  border-color: var(--mint-dark);
  box-shadow: 0 0 0 3px rgba(20,125,112,.12);
}

.replan-assessment-option {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 750;
  line-height: 1.5;
}

.replan-assessment-option input {
  flex: 0 0 auto;
  margin-top: 3px;
}

.replan-preview-heading > strong {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.replan-diff {
  border-color: #b9e2d7;
  background: #f5fcf9;
}

.replan-diff .canvas-section-heading {
  margin-bottom: 0;
}

.replan-diff-order {
  color: var(--mint-dark);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.4;
  text-align: right;
}

.replan-diff-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.replan-diff-group {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
}

.replan-diff-group h4 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 9px;
  font-size: 13px;
}

.replan-diff-group h4 small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.replan-diff-group > p {
  margin: 0;
  font-size: 12px;
}

.replan-diff-group ul,
.replan-conflicts ul,
.replan-alternatives ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 18px;
  line-height: 1.5;
}

.replan-diff-group li {
  min-width: 0;
  overflow-wrap: anywhere;
}

.replan-diff-item-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.replan-diff-item-heading strong {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: 12px;
}

.replan-diff-kind {
  flex: 0 0 auto;
  padding: 2px 6px;
  border-radius: 99px;
  color: #12695e;
  background: #eef8f4;
  font-size: 10px;
  font-weight: 850;
}

.replan-diff-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 7px;
}

.replan-diff-values span {
  min-width: 0;
  padding: 7px 8px;
  border-radius: 7px;
  background: var(--paper);
  overflow-wrap: anywhere;
  font-size: 12px;
  line-height: 1.45;
}

.replan-diff-values small {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
}

.replan-snapshot {
  display: grid;
  gap: 12px;
  padding: 0;
  border: 0;
  background: transparent;
}

.replan-snapshot > .canvas-section-heading {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

.replan-snapshot .plan-preview-context {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--paper);
}

.replan-snapshot .plan-preview-context span {
  color: var(--muted);
  font-size: 12px;
}

.replan-snapshot .plan-preview-context strong {
  min-width: 0;
  overflow-wrap: anywhere;
  text-align: right;
}

.replan-infeasible {
  padding: 18px;
  border: 1px solid #ecd7b1;
  border-radius: 14px;
  background: #fffaf0;
}

.replan-infeasible .replan-preview-heading h3 {
  color: #795a24;
}

.replan-conflicts,
.replan-alternatives {
  border-color: #ecd7b1;
  background: #fffdf8;
}

.replan-conflicts li,
.replan-alternatives li {
  overflow-wrap: anywhere;
}

.replan-workspace :is(button, textarea, input):focus-visible,
.replan-review :is(button, textarea, input):focus-visible,
.replan-preview :is(button, textarea, input):focus-visible {
  outline: 3px solid rgba(20,125,112,.2);
  outline-offset: 2px;
}

@media (max-width: 760px) {
  .replan-heading,
  .replan-preview-heading {
    flex-direction: column;
  }

  .replan-preview-heading > strong,
  .replan-diff-order {
    text-align: left;
  }

  .replan-context dl,
  .replan-review-card dl,
  .replan-diff-grid {
    grid-template-columns: 1fr;
  }

  .replan-snapshot .plan-preview-context {
    align-items: flex-start;
    flex-direction: column;
  }

  .replan-snapshot .plan-preview-context strong {
    text-align: left;
  }
}

@media (max-width: 620px) {
  .replan-workspace,
  .replan-preview {
    gap: 12px;
  }

  .replan-context,
  .replan-form,
  .replan-review,
  .replan-review-card,
  .replan-diff,
  .replan-snapshot,
  .replan-conflicts,
  .replan-alternatives {
    padding: 13px;
  }

  .replan-diff-values {
    grid-template-columns: 1fr;
  }
}

/* UI-LAYOUT-2 — Studio workspace and version-record presentation */
.studio-topbar,
.studio-main {
  max-width: 1600px;
}

.studio-workspace {
  grid-template-columns: minmax(280px, 320px) minmax(560px, 1fr) minmax(360px, 400px);
  gap: 20px;
}

.workspace-context {
  position: static;
  top: auto;
  max-height: none;
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.workspace-versions {
  position: sticky;
  top: 16px;
  max-height: none;
  padding: 18px;
  overflow: visible;
}

.project-header-card {
  gap: 18px;
  margin-bottom: 16px;
  padding: 18px 22px;
}

.project-header-meta {
  gap: 7px;
}

.project-header-meta > div {
  padding-top: 7px;
}

.profile-skill-value {
  white-space: nowrap;
  word-break: keep-all;
  overflow-wrap: normal;
}

.version-list-scroll {
  max-height: calc(100vh - 270px);
  padding: 2px 5px 2px 1px;
  overflow-y: auto;
  scrollbar-gutter: stable;
}

.version-list-scroll .canvas-history-list {
  position: relative;
  gap: 10px;
  padding-left: 14px;
}

.version-list-scroll .canvas-history-list::before {
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 3px;
  width: 1px;
  content: "";
  background: var(--line);
}

.version-list-scroll .canvas-history-list > li {
  position: relative;
}

.version-list-scroll .canvas-history-list > li::before {
  position: absolute;
  top: 19px;
  left: -14px;
  z-index: 1;
  width: 7px;
  height: 7px;
  border: 2px solid var(--paper);
  border-radius: 50%;
  content: "";
  background: var(--line-strong, var(--muted));
}

.version-list-scroll .canvas-history-list > li:has(.current)::before {
  background: var(--mint-dark);
}

.plan-history-item {
  gap: 8px;
  padding: 13px;
}

.history-card-heading,
.history-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  gap: 10px;
}

.history-card-heading strong {
  font-size: 17px;
}

.history-card-meta {
  color: var(--muted);
  font-size: 11px;
}

.history-card-meta > * {
  min-width: 0;
}

.history-card-meta time {
  white-space: nowrap;
}

.history-status {
  display: inline-flex;
  flex: 0 0 auto;
  padding: 3px 7px;
  border-radius: 999px;
  color: var(--muted);
  background: var(--paper);
  font-size: 10px;
  font-style: normal;
  font-weight: 800;
}

.history-status.current {
  color: var(--mint-dark);
  background: var(--mint);
}

.plan-history-summary {
  display: -webkit-box;
  max-height: 2.8em;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-height: 1.4;
}

.version-empty-state {
  display: grid;
  gap: 5px;
  padding: 12px 2px 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.version-empty-state strong {
  color: var(--ink-2);
  font-size: 13px;
}

@media (min-width: 1280px) {
  .studio-workspace {
    grid-template-columns: minmax(280px, 320px) minmax(560px, 1fr) minmax(360px, 400px);
  }
}

@media (min-width: 900px) and (max-width: 1279px) {
  .studio-workspace {
    grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
  }

  .workspace-context {
    grid-column: 1;
  }

  .workspace-canvas {
    grid-column: 2;
  }

  .workspace-versions {
    grid-column: 1 / -1;
    position: relative;
    top: auto;
  }

  .version-list-scroll {
    max-height: calc(100vh - 300px);
  }
}

@media (max-width: 899px) {
  .studio-workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .workspace-context,
  .workspace-canvas,
  .workspace-versions {
    grid-column: 1;
  }

  .workspace-context {
    order: 1;
  }

  .workspace-canvas {
    order: 2;
  }

  .workspace-versions {
    order: 3;
    position: relative;
    top: auto;
  }

  .version-list-scroll {
    max-height: calc(100vh - 300px);
  }
}

/* Keep plan records and conversational editing as peer cards in a shared rail. */
.workspace-right-rail {
  position: sticky;
  top: 16px;
  align-self: start;
  display: grid;
  gap: 16px;
  min-width: 0;
  max-height: calc(100vh - 32px);
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-gutter: stable;
}

.workspace-right-rail .workspace-versions {
  position: static;
  top: auto;
  max-height: none;
  padding: 18px;
  overflow: visible;
}

@media (min-width: 900px) and (max-width: 1279px) {
  .workspace-right-rail {
    position: static;
    grid-column: 1 / -1;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 899px) {
  .workspace-right-rail {
    position: static;
    grid-column: 1;
    order: 3;
    grid-template-columns: minmax(0, 1fr);
    max-height: none;
    overflow: visible;
  }
}

@media (max-width: 1279px) {
  .workspace-right-rail .plan-conversation-adjust {
    position: sticky;
    bottom: 12px;
    z-index: 4;
  }
}