/* ==========================================================================
   学术逻辑与证据链分析 — Stylesheet
   ========================================================================== */

:root {
  --bg: #f5f4ef;
  --surface: #ffffff;
  --surface-soft: #fbfbfa;
  --ink: #2c2a29;
  --muted: #73706c;
  --line: #e6e2db;
  --teal: #2c5e43;
  --teal-deep: #1b3d2b;
  --amber: #c07c1e;
  --red: #b42318;
  --shadow: 0 12px 32px rgba(44, 40, 36, 0.03);
  --border-radius: 8px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar styling */
.sidebar {
  width: 280px;
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 36px;
  height: 36px;
  background: var(--teal);
  color: #fff;
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
}

.brand h1 {
  font-family: "Noto Serif SC", serif;
  font-size: 16px;
  font-weight: 700;
}

.brand p {
  font-size: 11px;
  color: var(--muted);
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.5px;
}

/* Stage List Buttons */
.stage-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stage-button {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 10px 12px;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: all 0.2s;
}

.stage-button:hover {
  background: var(--bg);
  border-color: var(--line);
}

.stage-button.active {
  background: var(--bg);
  border-color: var(--line);
  box-shadow: inset 3px 0 0 var(--teal);
}

.stage-button .stage-num {
  font-size: 10px;
  font-weight: 700;
  color: var(--brand-secondary, var(--amber));
}

.stage-button strong {
  font-size: 13.5px;
  color: var(--ink);
  font-weight: 600;
}

.stage-button span {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Status section inside sidebar */
.status-section {
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.status-panel {
  background: var(--bg);
  padding: 14px;
  border-radius: 6px;
  border: 1px solid var(--line);
}

.maturity-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 6px;
}

.progress-bar {
  height: 6px;
  background: var(--line);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-bar div {
  height: 100%;
  background: var(--teal);
  width: 0;
  transition: width 0.3s;
}

.mini-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.metric-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px;
  text-align: center;
}

.metric-lbl {
  display: block;
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.metric-box strong {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.risk-count {
  color: var(--red) !important;
}

.exp-count {
  color: var(--teal) !important;
}

/* Main Workspace layout */
.main-workspace {
  flex: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  max-height: 100vh;
}

/* Top bar navigation */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.title-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow {
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: var(--teal);
  padding: 2px 8px;
  border-radius: 4px;
}

.topbar h2 {
  font-family: "Noto Serif SC", serif;
  font-size: 22px;
  color: var(--ink);
}

.actions {
  display: flex;
  gap: 10px;
}

.btn {
  height: 36px;
  padding: 0 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

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

.btn--primary:hover {
  background: var(--teal-deep);
}

.btn--secondary {
  background: #fff;
  border: 1px solid var(--line);
  color: var(--ink);
}

.btn--secondary:hover {
  background: var(--surface-soft);
}

/* Workspace main grid */
.workspace-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  flex: 1;
}

@media (max-width: 1200px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }
}

.workspace-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}

.panel-head h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.panel-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  background: var(--bg);
  padding: 2px 8px;
  border-radius: 4px;
}

/* Inputs Stack */
.input-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.input-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.input-field label {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
}

.input-field textarea {
  height: 90px;
  padding: 10px 12px;
  font-size: 13.5px;
  line-height: 1.5;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--ink);
  outline: none;
  resize: none;
}

.input-field textarea:focus {
  border-color: var(--teal);
  background: #fff;
}

/* Literature library formatting */
.lit-input-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lit-input-section label {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
}

.lit-input-row {
  display: flex;
  gap: 8px;
}

.lit-input-row input {
  flex: 1;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--ink);
  outline: none;
  font-size: 13.5px;
}

.lit-input-row input:focus {
  border-color: var(--teal);
  background: #fff;
}

.lit-display-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.lit-column h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.query-list,
.paper-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 240px;
  overflow-y: auto;
}

.query,
.paper {
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 10px;
}

.query strong,
.paper strong {
  font-size: 12px;
  color: var(--ink);
  display: block;
}

.query p,
.paper p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
  margin: 2px 0 6px;
}

.query code {
  font-size: 10px;
  font-family: monospace;
  background: var(--bg);
  padding: 2px 4px;
  border-radius: 2px;
  color: var(--ink);
  word-break: break-all;
  display: block;
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.chip {
  font-size: 9px;
  background: var(--bg);
  color: var(--muted);
  padding: 2px 6px;
  border-radius: 3px;
}

/* Advisor feedback components */
.panel--verdict {
  background: rgba(44, 94, 67, 0.03);
  border-color: rgba(44, 94, 67, 0.2);
}

.tag--verdict {
  color: var(--teal) !important;
  background: rgba(44, 94, 67, 0.1) !important;
}

.verdict-container {
  font-size: 14px;
}

.verdict-score {
  display: flex;
  align-items: center;
  gap: 16px;
}

.score-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}

.verdict-score strong {
  font-size: 15px;
  display: block;
  margin-bottom: 2px;
}

.verdict-score p {
  font-size: 13px;
  line-height: 1.4;
}

/* Question list / Risks list */
.question-stack,
.experiment-list,
.risk-list,
.trace-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.question,
.experiment,
.risk,
.trace-step {
  padding: 10px 12px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.question strong,
.experiment strong,
.risk strong,
.trace-step strong {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  display: block;
}

.question p,
.experiment p,
.risk p,
.trace-step p {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
  margin-top: 2px;
}

.risk.high {
  border-left: 3px solid var(--red);
}

.risk.medium {
  border-left: 3px solid var(--amber);
}

.risk.low {
  border-left: 3px solid var(--teal);
}

/* Comparative revision block */
.draft-comparison-box {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.draft-comparison-box div {
  padding: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.draft-comparison-box h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 4px;
}

.draft-comparison-box p {
  font-size: 12.5px;
  color: var(--ink);
  line-height: 1.5;
}

/* Experiment & risk layout */
.actions-output-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.actions-output-grid h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 8px;
}

/* Skeleton layouts */
.capsules-layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 16px;
}

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

.capsules-layout h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.skeleton-list,
.capsules-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skeleton-item,
.capsule {
  padding: 10px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.skeleton-item strong,
.capsule strong {
  font-size: 12px;
  color: var(--ink);
  display: block;
}

.skeleton-item p,
.capsule p {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
  margin-top: 2px;
}

.outline-list {
  padding-left: 20px;
  font-size: 12.5px;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(44, 40, 36, 0.4);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  z-index: 1000;
}

.modal[hidden] {
  display: none !important;
}

.modal-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  width: min(640px, 90%);
  padding: 24px;
  box-shadow: 0 24px 64px rgba(44, 40, 36, 0.15);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
}

.btn-close {
  background: transparent;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--muted);
}

.modal-card textarea {
  width: 100%;
  height: 320px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: monospace;
  font-size: 12px;
  line-height: 1.5;
  background: var(--surface-soft);
  outline: none;
  resize: none;
}

/* App Footer */
.app-footer {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}