:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --dock: #ffffff;
  --ink: #1f2937;
  --muted: #64748b;
  --faint: #94a3b8;
  --line: #e6ebf2;
  --line-strong: #d5deea;
  --field: #f8fafc;
  --blue: #2563eb;
  --blue-2: #3b82f6;
  --blue-soft: #eff5ff;
  --danger: #dc2626;
  --ok: #15803d;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  color: var(--ink);
  background: var(--bg);
  font: 15px/1.5 "Segoe UI", "PingFang SC", "Noto Sans SC", sans-serif;
}

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
img { max-width: 100%; }

.boot {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}
.gate-card {
  width: min(420px, 100%);
  padding: 28px 22px 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.setup-card { width: min(560px, 100%); }
.gate-card img.logo-lockup { display: block; height: 56px; margin: 0 auto 16px; }
.lede, .setup-title { margin: 0 0 16px; color: var(--muted); text-align: center; }
.stack { display: grid; gap: 12px; }
.field { display: grid; gap: 6px; }
.field span, .help { color: var(--muted); font-size: 13px; }
.help { margin: 6px 0; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  background: var(--field);
  border-radius: 12px;
  padding: 10px 12px;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(59, 130, 246, 0.45); border-color: transparent; }
.btn {
  border: 0;
  border-radius: 12px;
  min-height: 42px;
  padding: 8px 14px;
}
.btn.primary { background: var(--blue); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line-strong); }
.gate .btn.primary { width: 100%; margin-top: 14px; }
.error { color: var(--danger); margin: 8px 0; }
.ok { color: var(--ok); margin: 8px 0; }

.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 60px;
  padding: 0 18px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: 0.02em; }
.brand img.logo-lockup { height: 34px; width: auto; }
.top-actions { display: flex; align-items: center; gap: 8px; }
.icon-text, .icon-btn {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
}
.icon-text { height: 34px; padding: 0 12px; max-width: 180px; }
#desk-title {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.icon-btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  padding: 0;
  font-size: 20px;
}
.icon-btn svg { width: 18px; height: 18px; }
.works { position: relative; }
.works-panel {
  position: absolute;
  top: 42px;
  right: 0;
  width: 280px;
  max-width: 70vw;
  padding: 10px;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.works-head { display: flex; gap: 6px; align-items: center; }
.works-head .btn { flex: 1; width: auto; min-width: 0; white-space: nowrap; }
#history-search {
  width: 96px;
  flex: none;
  height: 36px;
  padding: 6px 8px;
  border-radius: 10px;
}
.ws-list { display: grid; gap: 6px; margin-top: 8px; max-height: 280px; overflow-x: hidden; overflow-y: auto; }
.ws-empty { margin: 8px 4px; color: var(--faint); font-size: 13px; }
.ws-item { display: flex; gap: 6px; min-width: 0; }
.ws-open, .ws-del {
  border: 1px solid var(--line);
  background: var(--field);
  border-radius: 10px;
}
.ws-open { flex: 1; width: 0; min-width: 0; text-align: left; padding: 8px 10px; }
.ws-item.on .ws-open { border-color: var(--blue); background: var(--blue-soft); }
.ws-title, .ws-state { display: block; }
.ws-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ws-state { color: var(--faint); font-size: 12px; }
.ws-del { padding: 0 10px; color: var(--muted); }

.banner {
  margin: 12px auto 0;
  width: min(920px, calc(100% - 32px));
  padding: 10px 12px;
  border-radius: 12px;
  background: #3f2a12;
  color: #fdba74;
}

#studio {
  flex: 1;
  width: min(920px, calc(100% - 48px));
  margin: 0 auto;
  padding: 18px 0 200px;
}
.stage { min-height: 240px; }
.empty {
  min-height: 42vh;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  gap: 8px;
  padding: 24px 12px;
}
.empty img.logo-lockup { height: 42px; }
.empty-title { margin: 4px 0 0; font-size: 28px; font-weight: 650; }
#stage-note { margin: 0; color: var(--muted); }
.examples { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; max-width: 720px; margin-top: 8px; }
.chip {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 12px;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#results { display: grid; gap: 12px; width: 100%; }
.card {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 14px;
  padding: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
}
.card-media {
  min-height: 120px;
  border-radius: 12px;
  overflow: hidden;
  background: #eef2f6;
  display: grid;
  place-items: center;
}
.card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-body { min-width: 0; display: grid; align-content: start; gap: 8px; }
.cap { margin: 0; font-size: 16px; }
.revised, .meta { margin: 0; color: var(--muted); font-size: 12px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  padding: 2px 8px;
  border-radius: 999px;
  background: #eef2f6;
  color: var(--muted);
  font-size: 12px;
}
.row { display: flex; flex-wrap: wrap; gap: 8px; }
.card .btn { min-height: 32px; padding: 4px 10px; }
.frame {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid #d5deea;
  border-top-color: var(--blue);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.composer {
  position: fixed;
  z-index: 15;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  width: min(920px, calc(100% - 48px));
  padding: 12px;
  background: var(--dock);
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.composer textarea {
  min-height: 48px;
  max-height: 120px;
  border: 0;
  background: transparent;
  padding: 4px 6px 8px;
  resize: none;
}
.composer textarea:focus { outline: none; }
.composer-bar {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  align-items: center;
}
.capsule {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  height: 36px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--field);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-size: 13px;
}
.capsule span { color: var(--muted); flex: none; }
.capsule select {
  width: auto;
  min-width: 0;
  height: 32px;
  border: 0;
  background: transparent;
  padding: 0 18px 0 0;
}
.capsule select:focus { outline: none; }
.model-pick { flex: 1 1 160px; min-width: 120px; }
.model-pick select { width: 100%; min-width: 0; }
.composer-bar .btn.primary {
  width: auto;
  min-width: 72px;
  min-height: 36px;
  flex: 0 0 auto;
  border-radius: 12px;
}
#add-file { flex: 0 0 auto; margin-left: auto; }
.custom-size { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }
.attachments { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; }
.file-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--field);
}
.file-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  color: var(--blue-2);
  background: var(--blue-soft);
  border-radius: 8px;
}
.file-mark svg { width: 16px; height: 16px; }
.file-name { max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; color: var(--muted); }
.file-x { border: 0; background: transparent; color: var(--muted); font-size: 18px; }


.shell:has(#settings:not([hidden])) .composer { visibility: hidden; }
.modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 20px 12px;
  background: rgba(0, 0, 0, 0.62);
}
.modal-card {
  width: min(720px, 100%);
  max-height: min(86vh, 860px);
  overflow: auto;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.admin-title { margin: 0; font-size: 22px; }
.keep-history {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-weight: 650;
}
.keep-history input { width: auto; }
.admin-card { margin-top: 14px; }
.admin-card h3 { margin: 0 0 6px; font-size: 16px; }
.admin-pass, .pass-next { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pass-current { margin-top: 8px; }
.api-list { display: grid; gap: 8px; margin: 12px 0; }
.api-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--field);
}
.api-row.on { border-color: #3b82f6; background: var(--blue-soft); }
.api-name { font-weight: 650; }
.api-meta { margin-top: 4px; color: var(--muted); font-size: 13px; overflow-wrap: anywhere; }
.api-actions { display: flex; gap: 8px; flex-shrink: 0; }
.api-actions .btn, .row .btn { width: auto; min-height: 34px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

@media (max-width: 800px) {
  .topbar { height: 54px; padding: 0 12px; }
  .brand span { font-size: 16px; }
  .icon-text { max-width: 120px; padding: 0 10px; }
  #studio { width: calc(100% - 16px); padding-bottom: 340px; }
  .empty { min-height: 28vh; }
  .empty-title { font-size: 22px; }
  .card { grid-template-columns: 108px 1fr; gap: 10px; }
  .composer {
    left: 8px;
    right: 8px;
    bottom: 8px;
    width: auto;
    transform: none;
    border-radius: 18px;
  }
  .composer-bar { display: grid; grid-template-columns: 1fr 1fr; }
  .model-pick, #submit, #add-file { grid-column: auto; }
  .model-pick { grid-column: 1 / -1; }
  .capsule { width: 100%; flex: none; border-radius: 12px; }
  .composer-bar .btn.primary { grid-column: 2; width: 100%; margin: 0; min-height: 42px; }
  #add-file { grid-column: 1; width: 100%; margin-left: 0; }
  .admin-pass, .pass-next { grid-template-columns: 1fr; }
  .api-row { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  .frame { animation: none; }
}