:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #617084;
  --line: #d9e0ea;
  --soft-line: #edf1f6;
  --panel: #ffffff;
  --page: #f5f7fa;
  --charcoal: #24313f;
  --teal: #147d7e;
  --blue: #2f6faf;
  --amber: #c57a17;
  --red: #b24848;
  --green: #2d7a55;
  --shadow: 0 18px 48px rgba(36, 49, 63, 0.12);
  --radius: 8px;
  --sidebar: 280px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
textarea,
select,
input {
  font: inherit;
}

button,
select,
textarea {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
}

button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

button:hover {
  border-color: #9dafc5;
  transform: translateY(-1px);
}

button:focus-visible,
textarea:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(20, 125, 126, 0.22);
  outline-offset: 2px;
}

textarea {
  resize: vertical;
  width: 100%;
  min-height: 110px;
  padding: 12px;
  line-height: 1.5;
}

select {
  min-height: 40px;
  padding: 0 10px;
}

input[type="range"] {
  accent-color: var(--teal);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
}

.side-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px;
  background: var(--charcoal);
  color: #f8fbff;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: #f8fbff;
  color: var(--charcoal);
  font-weight: 800;
}

.eyebrow {
  margin: 0;
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.side-rail .eyebrow {
  color: #83d1ca;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: 1.18rem;
  line-height: 1.1;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.55rem, 2.3vw, 2.2rem);
  line-height: 1.08;
}

h3 {
  margin-bottom: 12px;
  font-size: 1rem;
}

.section-tabs {
  display: grid;
  gap: 8px;
}

.tab-button {
  justify-content: flex-start;
  color: #dbe8f3;
  border-color: rgba(255, 255, 255, 0.11);
  background: rgba(255, 255, 255, 0.04);
}

.tab-button span {
  width: 30px;
  height: 26px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  color: #a9b8c9;
  background: rgba(255, 255, 255, 0.07);
  font-size: 0.78rem;
}

.tab-button.active {
  color: #fff;
  border-color: rgba(131, 209, 202, 0.75);
  background: rgba(20, 125, 126, 0.28);
}

.side-stats {
  margin-top: auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  overflow: hidden;
}

.side-stats div {
  padding: 12px 8px;
  text-align: center;
}

.side-stats div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.metric-value {
  display: block;
  font-weight: 800;
  font-size: 1.25rem;
}

.metric-label {
  display: block;
  color: #b8c8d8;
  font-size: 0.72rem;
}

.workspace {
  min-width: 0;
  padding: 24px;
  display: grid;
  gap: 18px;
}

.control-band,
.visual-band,
.view-section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.control-band {
  display: grid;
  grid-template-columns: minmax(260px, 1.4fr) minmax(240px, 0.9fr) auto;
  gap: 18px;
  padding: 18px;
  align-items: end;
}

.brief-panel label,
.field-grid label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.86rem;
}

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

.field-grid label:last-child {
  grid-column: 1 / -1;
}

.action-row {
  display: grid;
  gap: 10px;
  min-width: 154px;
}

.primary-action {
  color: #fff;
  background: var(--teal);
  border-color: var(--teal);
  font-weight: 800;
}

.visual-band {
  min-height: 250px;
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(320px, 1fr);
  overflow: hidden;
}

.visual-copy {
  padding: 28px;
  align-self: center;
}

.visual-copy p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
  max-width: 58ch;
}

.visual-band img {
  width: 100%;
  height: 100%;
  min-height: 250px;
  object-fit: cover;
  border-left: 1px solid var(--line);
}

.view-stack {
  min-height: 470px;
}

.view-section {
  display: none;
  padding: 22px;
}

.view-section.active {
  display: block;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--soft-line);
  margin-bottom: 18px;
}

.mission-layout,
.submission-layout,
.quality-grid,
.gpt-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(320px, 1fr);
  gap: 18px;
}

.outcome-panel,
.checklist-panel,
.gpt-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: #fbfcfe;
}

.outcome-panel p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.6;
}

.timeline {
  display: grid;
  gap: 10px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: #fff;
}

.timeline-phase {
  color: var(--teal);
  font-weight: 800;
  font-size: 0.78rem;
}

.timeline-item strong {
  display: block;
  margin-bottom: 4px;
}

.timeline-item p,
.arch-node p,
.risk-item p,
.task-item p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.45;
}

.architecture-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.arch-node {
  min-height: 178px;
  border: 1px solid var(--line);
  border-top: 5px solid var(--teal);
  border-radius: var(--radius);
  padding: 16px;
  background: #fff;
}

.arch-node:nth-child(2) {
  border-top-color: var(--blue);
}

.arch-node:nth-child(3) {
  border-top-color: var(--amber);
}

.arch-node:nth-child(4) {
  border-top-color: var(--red);
}

.node-chip {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  padding: 0 8px;
  border-radius: 999px;
  background: #eef5f5;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.quality-grid {
  grid-template-columns: minmax(360px, 1.1fr) minmax(280px, 0.8fr);
  align-items: start;
}

.readiness-system {
  display: grid;
  grid-template-columns: repeat(4, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.readiness-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: #fbfcfe;
}

.score-breakdown,
.gap-list,
.judge-grid,
.decision-list {
  display: grid;
  gap: 10px;
}

.score-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) 42px;
  gap: 10px;
  align-items: center;
}

.score-row span:first-child {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.score-track {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--soft-line);
}

.score-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--teal);
}

.score-row strong {
  text-align: right;
  font-size: 0.88rem;
}

.gap-item,
.judge-item,
.decision-item {
  border: 1px solid var(--soft-line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.gap-item strong,
.judge-item strong,
.decision-item strong {
  display: block;
  margin-bottom: 5px;
}

.gap-item p,
.judge-item p,
.decision-item p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.42;
}

.gap-item.warning {
  border-left: 5px solid var(--amber);
}

.gap-item.ready {
  border-left: 5px solid var(--green);
}

.decision-item.keep {
  border-left: 5px solid var(--green);
}

.decision-item.park {
  border-left: 5px solid var(--amber);
}

.decision-item.skip {
  border-left: 5px solid var(--red);
}

.task-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.task-column {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfe;
  min-height: 250px;
  padding: 12px;
}

.task-column h4 {
  margin: 0 0 10px;
  font-size: 0.84rem;
  color: var(--muted);
}

.task-item,
.risk-item {
  border: 1px solid var(--soft-line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.task-item + .task-item,
.risk-item + .risk-item {
  margin-top: 8px;
}

.task-item strong,
.risk-item strong {
  display: block;
  margin-bottom: 5px;
  font-size: 0.9rem;
}

.risk-list {
  display: grid;
  gap: 8px;
}

.risk-item {
  border-left: 5px solid var(--amber);
}

.risk-item.high {
  border-left-color: var(--red);
}

.risk-item.low {
  border-left-color: var(--green);
}

.evidence-bar {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.evidence-bar span:first-child {
  color: var(--teal);
  font-size: 1.2rem;
}

.gpt-panel {
  display: grid;
  gap: 10px;
}

.gpt-panel label {
  color: var(--muted);
  font-weight: 800;
  font-size: 0.86rem;
}

.gpt-panel textarea {
  min-height: 280px;
  background: #101820;
  color: #eff7ff;
  border-color: #101820;
}

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

.insight-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.insight-card {
  min-height: 136px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: #fff;
}

.insight-card strong {
  display: block;
  margin-bottom: 8px;
}

.insight-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.45;
}

.insight-card.ready {
  border-top: 5px solid var(--green);
}

.insight-card.watch {
  border-top: 5px solid var(--amber);
}

.insight-card.gap {
  border-top: 5px solid var(--red);
}

#submissionText {
  min-height: 420px;
  background: #101820;
  color: #eff7ff;
  border-color: #101820;
}

.checklist-panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.checklist-panel li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  color: var(--muted);
  line-height: 1.4;
}

.checklist-panel li::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid var(--teal);
  border-radius: 5px;
  margin-top: 2px;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  max-width: min(420px, calc(100vw - 48px));
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--charcoal);
  color: #fff;
  box-shadow: var(--shadow);
  transform: translateY(120%);
  opacity: 0;
  transition: transform 200ms ease, opacity 200ms ease;
}

.toast.visible {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 1040px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .side-rail {
    position: static;
    height: auto;
  }

  .section-tabs {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .control-band,
  .visual-band,
  .mission-layout,
  .submission-layout,
  .quality-grid,
  .gpt-layout,
  .readiness-system {
    grid-template-columns: 1fr;
  }

  .visual-band img {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

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

@media (max-width: 680px) {
  .workspace,
  .side-rail {
    padding: 16px;
  }

  .section-tabs,
  .field-grid,
  .task-board,
  .architecture-map,
  .insight-grid {
    grid-template-columns: 1fr;
  }

  .section-heading {
    display: block;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}