:root {
  color-scheme: dark;
  --bg: #000;
  --panel: #070707;
  --panel-soft: #0d0d0d;
  --line: #2a2a2a;
  --line-strong: #464646;
  --text: #fff;
  --muted: #bdbdbd;
  --dim: #808080;
  --focus: #f2f2f2;
  --danger: #f0b9b9;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

a {
  color: var(--text);
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 286px 1fr;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 18px;
  border-right: 1px solid var(--line);
  background: #020202;
  overflow-y: auto;
}

.logo {
  display: block;
  width: min(210px, 100%);
  height: auto;
  margin-bottom: 20px;
}

.app-name {
  margin: 0 0 12px;
  font-size: 1.02rem;
  font-weight: 750;
  letter-spacing: 0;
}

.source-chip {
  margin: 0 0 16px;
  padding: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-size: 0.82rem;
}

.source-chip strong {
  display: block;
  color: var(--text);
  margin-top: 4px;
  font-weight: 650;
}

.nav-group {
  display: grid;
  gap: 7px;
  margin: 18px 0;
}

.nav-link {
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  padding: 9px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  border-color: var(--line-strong);
  background: var(--panel-soft);
}

.project-list-title {
  color: var(--dim);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0;
  margin: 24px 0 8px;
}

.project-pill {
  display: grid;
  gap: 2px;
}

.project-pill span {
  color: var(--dim);
  font-size: 0.75rem;
  overflow-wrap: anywhere;
}

.content {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 18px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.94);
  position: sticky;
  top: 0;
  z-index: 2;
}

.topbar p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

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

.main {
  width: min(1120px, 100%);
  padding: clamp(22px, 4vw, 54px);
}

.footer {
  padding: 22px clamp(18px, 4vw, 48px);
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 0.82rem;
}

.hero {
  padding: 20px 0 34px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  max-width: 880px;
  font-size: clamp(2.1rem, 6vw, 5.4rem);
  line-height: 1;
  letter-spacing: 0;
  font-weight: 760;
}

h2 {
  margin: 0 0 14px;
  font-size: 1.08rem;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 0.96rem;
}

.hero-copy {
  max-width: 740px;
  color: var(--muted);
  font-size: 1.08rem;
  margin: 18px 0 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.button,
button {
  min-height: 40px;
  border: 1px solid var(--text);
  border-radius: 4px;
  background: var(--text);
  color: var(--bg);
  padding: 9px 13px;
  cursor: pointer;
  font-weight: 720;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.button.secondary,
button.secondary {
  background: transparent;
  color: var(--text);
}

button.ghost {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--muted);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 6px;
  padding: 18px;
}

.feature-card {
  min-height: 190px;
  display: block;
  text-align: left;
  color: var(--text);
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

.feature-card:hover,
.feature-card:focus-visible {
  border-color: var(--text);
  background: var(--panel-soft);
  transform: translateY(-1px);
}

.feature-card h2 {
  color: var(--text);
}

.panel p {
  color: var(--muted);
}

.boundary {
  border-color: var(--line-strong);
  background: #050505;
}

.boundary p {
  color: var(--text);
}

.form {
  display: grid;
  gap: 15px;
  margin-top: 24px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-weight: 650;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: #030303;
  color: var(--text);
  padding: 11px 12px;
  outline: none;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--focus);
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.meta-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 10px 16px;
  margin: 16px 0 0;
}

.meta-grid dt {
  color: var(--dim);
  font-weight: 700;
}

.meta-grid dd {
  margin: 0;
  color: var(--text);
  overflow-wrap: anywhere;
}

.workspace-header {
  display: grid;
  gap: 18px;
  margin-bottom: 22px;
}

.project-title-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
}

.project-title-row h1 {
  font-size: clamp(2rem, 4vw, 4rem);
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 9px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  white-space: nowrap;
  border-radius: 999px;
  font-size: 0.78rem;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.tab {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--muted);
}

.tab.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.item-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.item {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  padding: 15px;
}

.item-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--dim);
  font-size: 0.8rem;
  margin-bottom: 8px;
}

.item-title {
  font-weight: 760;
  margin-bottom: 8px;
}

.item-body {
  white-space: pre-wrap;
  color: var(--muted);
}

.draft-export {
  display: grid;
  gap: 10px;
  align-items: start;
  margin-top: 12px;
}

.ai-workbench {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.workbench-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 14px;
  align-items: start;
}

.chat-panel {
  display: grid;
  gap: 16px;
}

.chat-history {
  display: grid;
  gap: 12px;
  max-height: 620px;
  overflow-y: auto;
  padding-right: 4px;
}

.ai-message.user {
  border-color: var(--line-strong);
  background: #050505;
}

.ai-message.assistant {
  background: var(--panel-soft);
}

.context-panel {
  position: sticky;
  top: 86px;
}

.context-preview {
  max-height: 540px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 12px 0 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #030303;
  color: var(--muted);
  font: 0.82rem/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.empty {
  color: var(--dim);
  border: 1px dashed var(--line-strong);
  padding: 16px;
  border-radius: 6px;
  margin-top: 20px;
}

.provenance {
  white-space: pre-wrap;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  background: #030303;
  overflow-wrap: anywhere;
}

.notice {
  border: 1px solid var(--line-strong);
  background: var(--panel-soft);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 6px;
  margin-top: 14px;
}

.danger {
  color: var(--danger);
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .logo {
    width: 180px;
  }

  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .two-col,
  .meta-grid {
    grid-template-columns: 1fr;
  }

  .project-title-row {
    flex-direction: column;
  }

  .workbench-grid {
    grid-template-columns: 1fr;
  }

  .context-panel {
    position: static;
  }
}