:root {
  --ink: #202124;
  --muted: #60656f;
  --line: #d7dbe2;
  --panel: #ffffff;
  --paper: #f5f7f2;
  --accent: #0c6b58;
  --accent-strong: #08483b;
  --warning: #9a4f14;
  --rose: #8d2d48;
  --focus: #2563eb;
  --shadow: 0 16px 40px rgba(32, 33, 36, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    linear-gradient(135deg, rgba(12, 107, 88, 0.08), transparent 34%),
    linear-gradient(225deg, rgba(141, 45, 72, 0.07), transparent 30%),
    var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
textarea,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

body.gate-locked {
  overflow: hidden;
}

.peekaboo-gate {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(12, 107, 88, 0.93), rgba(32, 33, 36, 0.88)),
    var(--paper);
  animation: gateGlow 8s ease-in-out infinite alternate;
}

.peekaboo-gate.hidden {
  display: none;
}

.gate-card {
  width: min(440px, 100%);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.24);
  padding: 24px;
  animation: gatePop 520ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.gate-card h1 {
  font-size: clamp(2rem, 7vw, 3.4rem);
  line-height: 1;
  margin-bottom: 18px;
}

.gate-form {
  display: grid;
  gap: 9px;
}

.gate-form label {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 750;
}

.gate-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px;
}

.gate-row input {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 11px;
}

.gate-message {
  min-height: 22px;
  margin: 2px 0 0;
  color: var(--muted);
  font-weight: 700;
}

.gate-message.alarm {
  color: var(--rose);
  animation: alarmShake 360ms ease-in-out;
}

.gate-message.open {
  color: var(--accent-strong);
  animation: welcomeBounce 520ms ease;
}

.app-shell {
  min-height: 100vh;
  padding: 24px;
  animation: appFadeIn 480ms ease both;
}

.workspace {
  width: min(1440px, 100%);
  margin: 0 auto;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 440px);
  gap: 18px;
  align-items: end;
  padding: 4px 0 18px;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 750;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 4.4rem);
  line-height: 0.95;
}

h2 {
  margin-bottom: 4px;
  font-size: 1rem;
}

.ethics-note {
  border-left: 4px solid var(--accent);
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  box-shadow: var(--shadow);
}

.ethics-note strong {
  display: block;
  color: var(--ink);
  margin-bottom: 3px;
}

.gate-lock-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.document-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  gap: 18px;
  margin-bottom: 18px;
}

.review-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr 1.2fr 1.4fr;
  gap: 18px;
  margin-top: 18px;
}

.integrity-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  min-width: 0;
  padding: 16px;
  animation: panelRise 420ms ease both;
}

.panel-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
}

.panel-head.compact {
  min-height: 44px;
}

.panel p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
  margin-bottom: 0;
}

textarea,
.revision-output {
  width: 100%;
  min-height: 430px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 16px;
  resize: vertical;
  line-height: 1.6;
  background: #fbfcfd;
}

.suggestion-input {
  min-height: 118px;
}

textarea:focus,
.revision-output:focus,
button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.28);
  outline-offset: 2px;
}

.revision-output {
  overflow: auto;
  white-space: pre-wrap;
}

.placeholder {
  display: inline;
  color: var(--rose);
  font-weight: 700;
}

.citation-needed {
  color: var(--warning);
  font-weight: 700;
}

.metrics,
.button-row,
.focus-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.file-status {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.3;
  text-align: right;
}

.file-drop {
  display: grid;
  place-items: center;
  min-height: 118px;
  border: 1px dashed var(--accent);
  border-radius: 6px;
  background: #f8fbf9;
  color: var(--accent-strong);
  font-weight: 750;
  text-align: center;
  padding: 16px;
}

.file-drop input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.metrics {
  margin-top: 10px;
}

.metrics span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 10px;
  color: var(--muted);
  font-size: 0.84rem;
  background: #fff;
}

.ghost-button,
.icon-button {
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 36px;
  padding: 0 12px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
}

.icon-button {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  min-width: 62px;
}

.ghost-button:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.ghost-button:active,
.icon-button:active,
.mini-button:active {
  transform: translateY(1px) scale(0.99);
}

.focus-controls {
  margin-top: 12px;
}

.focus-controls label {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 32px;
  color: var(--ink);
}

.guidance-list,
.checklist,
.action-list,
.history-list {
  padding: 0;
  margin: 12px 0 0;
  list-style: none;
}

.guidance-list li {
  border-top: 1px solid var(--line);
  padding: 11px 0;
  color: var(--muted);
  line-height: 1.45;
}

.guidance-list li:first-child {
  border-top: 0;
}

.compact-list li {
  font-size: 0.9rem;
}

.guidance-list strong {
  color: var(--ink);
}

.action-list li,
.history-list li,
.source-row,
.evidence-card {
  border-top: 1px solid var(--line);
  padding: 11px 0;
}

.action-list li:first-child,
.history-list li:first-child,
.source-row:first-child,
.evidence-card:first-child {
  border-top: 0;
}

.action-list p,
.history-list p,
.source-row p,
.evidence-card p {
  margin: 0 0 8px;
  color: var(--ink);
}

.mini-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.mini-button {
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 30px;
  padding: 0 9px;
  background: #fff;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 750;
}

.mini-button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.source-tracker,
.evidence-builder {
  display: grid;
  gap: 0;
  margin-top: 8px;
}

.source-row label,
.evidence-card label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.source-row input,
.evidence-card input {
  width: 100%;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 7px 9px;
  background: #fbfcfd;
}

.wide-panel {
  grid-column: span 2;
}

.score-panel {
  display: flex;
  flex-direction: column;
}

.score-ring {
  display: grid;
  place-items: center;
  width: 112px;
  aspect-ratio: 1;
  margin: 14px 0 2px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) 0deg, #e8ecef 0deg);
  color: var(--accent-strong);
  font-size: 1.45rem;
  font-weight: 850;
  position: relative;
  transition: background 360ms ease, transform 220ms ease;
  animation: scorePop 420ms ease both;
}

.score-ring:hover {
  transform: scale(1.03);
}

.score-ring::after {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: #fff;
  z-index: 0;
}

.score-ring {
  isolation: isolate;
}

.score-ring::before {
  content: attr(data-score);
  z-index: 1;
}

.diff-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  max-height: 360px;
  overflow: auto;
}

.diff-column {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfd;
  min-width: 0;
}

.diff-column h3 {
  margin: 0;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
}

.diff-column p {
  margin: 0;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  color: var(--ink);
  animation: softReveal 260ms ease both;
}

.diff-column p:first-of-type {
  border-top: 0;
}

.diff-changed {
  background: #fff8e8;
}

.diff-added {
  background: #edf8f3;
}

.heatmap {
  display: grid;
  gap: 8px;
}

.heat-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.heat-bar {
  min-height: 34px;
  border-radius: 6px;
  border: 1px solid var(--line);
  padding: 7px 9px;
  line-height: 1.35;
  color: var(--ink);
  animation: heatReveal 300ms ease both;
}

.heat-low {
  background: #eef8f2;
}

.heat-medium {
  background: #fff4d6;
}

.heat-high {
  background: #ffe2dc;
}

@keyframes gateGlow {
  from {
    background-position: 0% 50%;
  }
  to {
    background-position: 100% 50%;
  }
}

@keyframes gatePop {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes alarmShake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  50% {
    transform: translateX(5px);
  }
  75% {
    transform: translateX(-3px);
  }
}

@keyframes welcomeBounce {
  0% {
    transform: scale(0.98);
  }
  55% {
    transform: scale(1.04);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes appFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes panelRise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scorePop {
  from {
    opacity: 0;
    transform: scale(0.92);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes softReveal {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heatReveal {
  from {
    opacity: 0;
    transform: scaleX(0.96);
    transform-origin: left;
  }
  to {
    opacity: 1;
    transform: scaleX(1);
  }
}

.checklist li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  border-top: 1px solid var(--line);
  padding: 10px 0;
  line-height: 1.4;
}

.checklist li:first-child {
  border-top: 0;
}

.checklist input {
  width: 18px;
  height: 18px;
  margin-top: 1px;
  accent-color: var(--accent);
}

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

@media (max-width: 1000px) {
  .topbar,
  .document-grid,
  .editor-grid,
  .review-grid,
  .integrity-grid {
    grid-template-columns: 1fr;
  }

  .wide-panel {
    grid-column: auto;
  }

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

  textarea,
  .revision-output {
    min-height: 320px;
  }
}

@media (max-width: 620px) {
  .app-shell {
    padding: 14px;
  }

  .topbar {
    gap: 12px;
  }

  .panel {
    padding: 13px;
  }

  .panel-head {
    display: grid;
  }

  .button-row {
    width: 100%;
  }

  .icon-button,
  .ghost-button {
    flex: 1;
  }

  .gate-row {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}

.gate-hint {
  margin: 4px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}