:root {
  --bg: #12141a;
  --panel: #1b1e27;
  --panel-2: #232833;
  --line: #343a49;
  --text: #e8e6e1;
  --muted: #9a958a;
  --accent: #d08a3a;
  --accent-ink: #2a1c0c;
  --danger: #e15d4a;
  --ok: #7dba6a;
  --note: #d7d2c8;
  --warn: #e0b15a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 "Segoe UI", "Helvetica Neue", sans-serif;
}

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

button, .topbar a, .docs-tools a, .history-row a, .doc-row a {
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  text-decoration: none;
  cursor: pointer;
}

button:hover, .topbar a:hover { border-color: var(--accent); }

button:disabled, input:disabled, select:disabled, textarea:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: #0e1015;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  color: var(--text);
  margin-right: 0.4rem;
}

.logo { align-self: center; color: var(--accent); }

.brand-name {
  font-family: Palatino, "Iowan Old Style", Georgia, serif;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
}

.brand-version { color: var(--muted); font-size: 0.85rem; }

#nav-studio[aria-current="page"],
#nav-documents[aria-current="page"] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

#run-indicator { margin-left: auto; }

#logout { margin-left: 0.25rem; }

.topbar-auth { justify-content: flex-start; }

.page-auth {
  min-height: 100vh;
}

#auth-main {
  display: grid;
  place-items: center;
  min-height: calc(100vh - 4rem);
}

#sign-in {
  width: min(22rem, calc(100% - 2rem));
  display: grid;
  gap: 0.8rem;
  padding: 1.4rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

#sign-in label { display: grid; gap: 0.3rem; }

#sign-in input {
  background: #10131a;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.45rem 0.55rem;
}

#sign-in button {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 650;
}

#auth-error { min-height: 1.2em; color: var(--danger); margin: 0; }

.studio-shell {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(220px, 1fr);
  grid-template-rows: auto minmax(280px, 1fr) auto;
  grid-template-areas:
    "toolbar toolbar"
    "viewer side"
    "references side";
  min-height: calc(100vh - 3.4rem);
  min-width: 960px;
}

#toolbar { grid-area: toolbar; }
#viewer { grid-area: viewer; }
#side { grid-area: side; }
#references { grid-area: references; }

#toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.55rem 0.7rem;
  padding: 0.7rem 0.9rem;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

#toolbar label { display: grid; gap: 0.15rem; font-size: 0.78rem; color: var(--muted); }

#toolbar input, #toolbar select, #project-name {
  background: #10131a;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.35rem 0.45rem;
}

#project-name { min-width: 10rem; }

#ceiling, #higher-budget-note {
  margin: 0;
  flex-basis: 100%;
  color: var(--muted);
  font-size: 0.86rem;
}

#higher-budget-note { color: var(--warn); }

#btn-run, #btn-accept {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

#viewer {
  position: relative;
  min-height: 320px;
  background:
    linear-gradient(180deg, rgba(208, 138, 58, 0.05), transparent 30%),
    #151820;
  overflow: hidden;
}

#viewer.is-comparing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: minmax(0, 1fr);
}

#viewer-stage { position: absolute; inset: 0; }

#viewer-stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}

#viewer.is-comparing #viewer-stage { position: relative; min-height: 320px; height: 100%; }

#viewer-drop {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  color: var(--muted);
  pointer-events: none;
}

.viewer-banner, .viewing-banner {
  position: relative;
  z-index: 3;
  margin: 0.6rem;
  padding: 0.45rem 0.6rem;
  background: rgba(18, 20, 26, 0.92);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.viewer-banner { color: var(--warn); }

.viewing-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.viewing-banner p { margin: 0; }

#viewer-stats, #viewer-display, #viewer-cameras, #light-pad, #btn-close-compare {
  position: absolute;
  z-index: 2;
}

#viewer-stats { top: 0.6rem; left: 0.7rem; color: var(--muted); font-size: 0.82rem; }

#viewer-display {
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
  max-width: 46%;
  font-size: 0.78rem;
}

#viewer-display label { display: flex; gap: 0.3rem; align-items: center; }

#viewer-display select {
  background: #10131a;
  border: 1px solid var(--line);
  border-radius: 6px;
}

#viewer-cameras {
  left: 50%;
  bottom: 0.6rem;
  transform: translateX(-50%);
  display: flex;
  gap: 0.3rem;
}

#light-pad {
  right: 0.7rem;
  bottom: 0.7rem;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 1px dashed var(--line);
  background: radial-gradient(circle at 40% 40%, #3a4254, #1b1e27);
  touch-action: none;
  cursor: grab;
}

#compare-still {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #101218;
}

#btn-close-compare { top: 0.6rem; left: 50%; transform: translateX(-50%); }

#run-panel {
  position: absolute;
  z-index: 4;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 3.2rem;
  max-height: 38%;
  overflow: auto;
  padding: 0.6rem 0.75rem;
  background: rgba(12, 14, 18, 0.9);
  border: 1px solid var(--line);
  border-radius: 8px;
}

#run-panel p { margin: 0.15rem 0; }

#run-log {
  margin: 0.4rem 0 0;
  white-space: pre-wrap;
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.78rem;
  color: var(--muted);
}

#side {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--panel);
  border-left: 1px solid var(--line);
}

.tabs { display: flex; border-bottom: 1px solid var(--line); }

.tabs button {
  flex: 1;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.tabs button[aria-selected="true"] {
  color: var(--accent);
  box-shadow: inset 0 -2px 0 var(--accent);
}

#panel-history, #panel-consult, #panel-info {
  overflow: auto;
  padding: 0.7rem;
  min-height: 0;
  flex: 1;
}

.history-current, .history-version {
  display: block;
  width: 100%;
  text-align: left;
  margin-bottom: 0.35rem;
}

.history-row, .history-current.is-current, .history-row.is-current .history-version {
  border-color: var(--accent);
}

.history-row { margin-bottom: 0.6rem; }

.history-empty, #consult-empty, #projects-empty, #ref-hint {
  color: var(--muted);
}

.consult-note {
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
}

.consult-note p, .consult-note time { display: block; margin: 0.15rem 0; }

.consult-ai { color: var(--note); }

.no-change { color: var(--muted); }

.brush-row, #consult-form { display: grid; gap: 0.45rem; margin-top: 0.7rem; }

#consult-prompt {
  width: 100%;
  min-height: 5.5rem;
  resize: vertical;
  background: #10131a;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.45rem;
}

#consult-counter { color: var(--muted); font-size: 0.78rem; }

#info-report p { margin: 0.3rem 0; }

.info-mark {
  display: inline-block;
  min-width: 4.2rem;
  color: var(--ok);
}

.level-note .info-mark { color: var(--note); }
.level-warning .info-mark { color: var(--warn); }

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

#references {
  position: static;
  padding: 0.7rem 0.9rem 1rem;
  background: #161922;
  border-top: 1px solid var(--line);
}

.ref-head { display: flex; gap: 0.8rem; align-items: baseline; }

#ref-count { color: var(--muted); }

#ref-drop {
  min-height: 7.5rem;
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 0.6rem;
}

#ref-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.ref-card {
  width: 9.5rem;
  display: grid;
  gap: 0.25rem;
  padding: 0.4rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.ref-thumb, .project-thumb {
  width: 100%;
  height: 4.5rem;
  object-fit: cover;
  background: #101218;
  border-radius: 4px;
}

.ref-name, .ref-status, .ref-card p { margin: 0; font-size: 0.8rem; }

.ref-hint-label { display: grid; gap: 0.15rem; font-size: 0.75rem; color: var(--muted); }

#projects-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 20;
}

#projects-drawer {
  position: fixed;
  z-index: 21;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(28rem, 92vw);
  overflow: auto;
  background: var(--panel);
  border-right: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1rem;
}

#projects-drawer header {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}

#projects-drawer h2 { margin: 0; font-size: 1.1rem; }

#projects-close { margin-left: auto; }

#project-search, #docs-filter {
  width: 100%;
  margin: 0.7rem 0;
  background: #10131a;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.4rem 0.5rem;
}

.project-card {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  gap: 0.2rem 0.6rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.project-card.is-open { outline: 1px solid var(--accent); border-radius: 8px; }

.project-thumb { grid-row: span 5; height: 5.2rem; }

.project-name { margin: 0; font-size: 1rem; }

.project-card p { margin: 0; color: var(--muted); font-size: 0.82rem; }

.project-delete { grid-column: 3; grid-row: 1; }

#confirm {
  position: fixed;
  z-index: 30;
  left: 50%;
  top: 30%;
  transform: translateX(-50%);
  width: min(32rem, calc(100% - 2rem));
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

#confirm p { margin-top: 0; }

#confirm-ok { margin-left: 0.4rem; background: var(--danger); border-color: var(--danger); }

#toasts {
  position: fixed;
  z-index: 40;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  gap: 0.4rem;
  max-width: min(28rem, calc(100% - 2rem));
}

.toast {
  margin: 0;
  padding: 0.55rem 0.7rem;
  background: #2a241c;
  border: 1px solid var(--accent);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

#docs-layout {
  display: grid;
  grid-template-columns: 18rem 1fr;
  min-height: calc(100vh - 3.4rem);
}

#docs-list {
  border-right: 1px solid var(--line);
  padding: 0.8rem;
  background: var(--panel);
}

.doc-row {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  margin-bottom: 0.35rem;
}

.doc-open {
  flex: 1;
  text-align: left;
  background: transparent;
  border-color: transparent;
}

.doc-row.is-current .doc-open { color: var(--accent); }

#docs-reader { padding: 1rem 1.4rem 3rem; overflow: auto; }

#docs-path { color: var(--muted); margin-top: 0; }

#docs-banner { color: var(--warn); }

#docs-body { max-width: 52rem; }

#docs-body table { border-collapse: collapse; }

#docs-body th, #docs-body td {
  border: 1px solid var(--line);
  padding: 0.3rem 0.45rem;
}

#docs-body pre {
  overflow: auto;
  padding: 0.7rem;
  background: #101218;
  border-radius: 8px;
}

#docs-body code { font-family: ui-monospace, "Cascadia Code", monospace; }

#docs-back { display: none; margin-bottom: 0.8rem; }

@media (max-width: 800px) {
  #docs-layout { display: block; }
  #docs-layout:not(.is-reading) #docs-reader { display: none; }
  #docs-layout.is-reading #docs-list { display: none; }
  #docs-layout.is-reading #docs-back { display: inline-flex; }
  #docs-list, #docs-reader { min-height: calc(100vh - 3.4rem); }
}