:root {
  --bg: #f3f6fb;
  --card: #ffffff;
  --ink: #1f2937;
  --muted: #64748b;
  --faint: #94a3b8;
  --line: #e6ebf2;
  --line-strong: #d5deea;
  --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; }

/* 作者样式里的 display 不能把 hidden 盖掉，否则登录层和自定义尺寸会一直显示。 */
[hidden] { display: none !important; }

html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 0% -10%, rgba(59, 130, 246, 0.14), transparent 55%),
    radial-gradient(700px 380px at 100% 0%, rgba(125, 211, 252, 0.18), transparent 48%),
    var(--bg);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

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

h1, h2, .empty-title {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Songti SC", "Noto Serif SC", serif;
  font-weight: 600;
  letter-spacing: 0.04em;
}

button, input, textarea, select { font: inherit; color: var(--ink); }

.boot {
  margin: 0;
  padding: 28vh 20px 0;
  text-align: center;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.gate {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
}

.gate-card {
  width: min(460px, 100%);
  padding: 40px 36px 32px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.setup-card { width: min(760px, 100%); }

.stack { display: grid; gap: 14px; margin-top: 8px; }

.help, .hint, .lede, .meta, .api-meta, .foot {
  color: var(--muted);
}

.help { margin: 0; font-size: 13px; line-height: 1.6; }
.ok { margin: 0; color: var(--ok); }
.lede { margin: 12px 0 24px; }

.eyebrow {
  margin: 0 0 4px;
  color: var(--blue);
  font-size: 12px;
  letter-spacing: 0.22em;
}

img.logo-lockup {
  display: block;
  width: auto;
  max-width: 168px;
  height: 32px;
  max-height: 32px;
  object-fit: contain;
  object-position: left center;
}
.gate-card img.logo-lockup,
.setup-card img.logo-lockup {
  height: 40px;
  max-height: 40px;
  max-width: 184px;
  margin: 0 auto 12px;
  object-position: center;
}
.empty img.logo-lockup {
  height: 36px;
  max-height: 36px;
  max-width: 168px;
  margin: 0 auto 8px;
  object-position: center;
}
.ws-brand img.logo-lockup {
  height: 26px;
  max-height: 26px;
  max-width: 120px;
}

.field { display: grid; gap: 8px; }
.field span, .mini span {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

input, textarea, select {
  width: 100%;
  padding: 12px 14px;
  background-color: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--ink);
}

textarea { resize: vertical; min-height: 120px; line-height: 1.7; }

select {
  color-scheme: light;
  appearance: none;
  padding-right: 36px;
  background-color: #fff;
  background-image:
    linear-gradient(45deg, transparent 50%, #2563eb 50%),
    linear-gradient(135deg, #2563eb 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 2px), calc(100% - 12px) calc(50% - 2px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

select option, select optgroup {
  background-color: #fff;
  color: #1f2937;
}

input::placeholder, textarea::placeholder { color: #94a3b8; }

input:focus, textarea:focus, select:focus {
  outline: 2px solid rgba(37, 99, 235, 0.25);
  outline-offset: 1px;
  border-color: var(--blue);
}

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 10px 16px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.04em;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.btn.primary {
  width: 100%;
  margin-top: 8px;
  min-height: 48px;
  border: 0;
  background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
  color: #fff;
  font-weight: 600;
}

.btn.primary:hover { filter: brightness(1.05); }

.btn.ghost {
  background: #fff;
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn.ghost:hover { border-color: var(--blue); color: var(--blue); }

.btn:disabled, .chip:disabled { opacity: 0.45; cursor: not-allowed; filter: none; }

.error { margin: 4px 0 0; color: var(--danger); }

#app.shell {
  width: 100%;
  height: 100vh;
  margin: 0;
  padding: 0;
  display: flex;
  overflow: hidden;
}

.workspace {
  width: 272px;
  flex: none;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px 12px;
  background: #fff;
  border-right: 1px solid var(--line);
}

.ws-brand { display: flex; align-items: center; gap: 10px; padding: 4px 6px 2px; }
.ws-brand strong { font-size: 22px; letter-spacing: 0.08em; }
.ws-brand { padding: 4px 8px 2px; }
.workspace #new-work { width: 100%; margin: 0; }
.ws-label { margin: 4px 8px 0; font-size: 12px; color: var(--faint); letter-spacing: 0.12em; }
.ws-list { flex: 1; overflow: auto; display: grid; align-content: start; gap: 4px; }
.ws-empty { margin: 8px; color: var(--faint); font-size: 13px; }
.ws-item {
  display: flex;
  align-items: center;
  gap: 4px;
  width: 100%;
  border-radius: 12px;
}
.ws-item.on, .ws-item:hover { background: var(--blue-soft); }
.ws-open {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 8px 10px 10px;
  border: 0;
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}
.ws-del {
  flex: none;
  margin-right: 6px;
  border: 0;
  background: transparent;
  color: var(--faint);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 6px;
}
.ws-del:hover { color: var(--danger); }
.ws-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ws-state { flex: none; color: var(--faint); font-size: 12px; }
.ws-foot { display: grid; gap: 8px; }
.ws-foot .btn { width: 100%; margin: 0; }

.desk {
  flex: 1;
  min-width: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 16px 24px 16px;
  gap: 12px;
}

.top {
  flex: none;
  display: flex;
  align-items: center;
  min-height: 52px;
  margin: 0;
  padding: 0 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

#desk-title { font-size: 16px; color: var(--ink); }

.top-actions { display: flex; gap: 8px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand h1 { font-size: 34px; line-height: 1; }

.banner {
  margin: 0 0 16px;
  padding: 12px 14px;
  color: #1d4ed8;
  background: var(--blue-soft);
  border: 1px solid #dbe7ff;
  border-radius: 14px;
}

main { display: block; }

#studio {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.stage {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.empty {
  min-height: 460px;
  padding: 56px 24px;
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.empty-title { font-size: 36px; }
.empty .examples { justify-content: center; max-width: 860px; margin-top: 16px; }

.examples { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 12px;
  cursor: pointer;
  font-size: 13px;
}

.chip:hover { color: var(--blue); border-color: #bfdbfe; }

.recent { margin: 0 0 16px; }

#results {
  display: grid;
  grid-template-columns: minmax(0, 820px);
  justify-content: center;
  gap: 16px;
}

.card {
  padding: 0 0 14px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.card img {
  width: 100%;
  height: auto;
  display: block;
  background-color: #f8fafc;
  background-image:
    linear-gradient(45deg, #eef2f7 25%, transparent 25%),
    linear-gradient(-45deg, #eef2f7 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #eef2f7 75%),
    linear-gradient(-45deg, transparent 75%, #eef2f7 75%);
  background-size: 18px 18px;
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}

.cap { margin: 14px 16px 0; white-space: pre-wrap; }
.revised { margin: 6px 16px 0; color: var(--muted); font-size: 14px; }
.row { display: flex; gap: 8px; margin: 14px 16px 0; }
.row .btn { width: auto; margin-top: 0; }
.meta { margin: 10px 16px 0; font-size: 12px; }

.loading .frame {
  height: 320px;
  background:
    linear-gradient(100deg, transparent 20%, rgba(37, 99, 235, 0.12) 48%, transparent 72%),
    #f8fafc;
  background-size: 220% 100%;
  animation: sheen 1.8s ease-in-out infinite;
}

.loading .cap { color: var(--blue); }

@keyframes sheen {
  from { background-position: 120% 0; }
  to { background-position: -40% 0; }
}

.composer {
  position: relative;
  z-index: 2;
  left: auto;
  bottom: auto;
  transform: none;
  width: auto;
  margin: 0;
  padding: 8px 10px 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.composer textarea {
  min-height: 44px;
  max-height: 96px;
  border: 0;
  background: transparent;
  padding: 4px 6px 0;
  resize: none;
}

.composer textarea:focus { outline: none; border: 0; }
.composer .hint { 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: #f8fafc;
}

.file-chip img { width: 42px; height: 42px; object-fit: cover; border-radius: 8px; }
.file-kind, .file-name { font-size: 12px; color: var(--muted); }
.file-name { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.file-x {
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
}

.composer-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-top: 2px;
}

.icon-btn, .pill, .add-menu button {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  cursor: pointer;
}

.icon-btn {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  font-size: 20px;
  line-height: 1;
}

.add-wrap { position: relative; }

.add-menu {
  position: absolute;
  left: 0;
  bottom: 46px;
  display: grid;
  min-width: 160px;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.add-menu button {
  border: 0;
  border-radius: 10px;
  text-align: left;
  padding: 8px 10px;
}

.add-menu button:hover, .pill:hover, .icon-btn:hover {
  color: var(--blue);
  background: var(--blue-soft);
}

.pills { display: flex; gap: 6px; flex-wrap: wrap; }
.pill { padding: 4px 10px; font-size: 12px; }
.pill.on { color: #fff; background: var(--blue); border-color: transparent; }

.mini { display: grid; gap: 4px; }
.mini select { min-width: 88px; height: 32px; padding: 4px 26px 4px 8px; }
#model { min-width: 180px; }

.composer-bar .btn.primary {
  width: auto;
  min-width: 88px;
  min-height: 32px;
  margin: 0 0 0 auto;
  padding: 4px 14px;
}

.custom-size { display: grid; grid-template-columns: 160px 160px; gap: 12px; margin-top: 10px; }

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.desk .banner, .desk .admin { margin-left: 0; margin-right: 0; }
.desk .admin { flex: 1; min-height: 0; overflow: auto; }
.admin { width: auto; margin: 0 0 24px; }
.admin-head { margin: 8px 0 18px; }
.admin-head h2 { font-size: 42px; margin: 4px 0 8px; }
.admin-grid { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 18px; align-items: start; }
.admin-card, .admin-actions {
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.admin-card h3 { margin: 0 0 8px; font-size: 20px; font-weight: 600; }
.admin-card .help { margin-top: 8px; }
.span { grid-column: 1 / -1; }
.admin-pass { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
#api-form .row .btn.primary { min-width: 120px; }
.admin-actions .btn.primary { width: auto; min-width: 160px; margin-top: 0; }
.admin-actions .row { justify-content: flex-end; margin: 0; }

.api-list { display: grid; gap: 10px; margin: 14px 0; }
.api-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #f8fafc;
}
.api-row.on { border-color: #93c5fd; background: var(--blue-soft); }
.api-name { color: var(--ink); font-weight: 600; }
.api-meta { margin-top: 4px; font-size: 13px; }
.api-actions { display: flex; gap: 8px; flex-shrink: 0; }
.api-actions .btn, .admin-card .row .btn { width: auto; margin: 0; padding: 8px 12px; }

.foot {
  width: min(1180px, calc(100% - 48px));
  margin: 12px auto 0;
  text-align: center;
  font-size: 13px;
}

@media (max-width: 1100px) {
  .admin-grid, .admin-pass { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  #app.shell { flex-direction: column; height: auto; min-height: 100vh; overflow: visible; }
  .workspace { width: 100%; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .ws-list { display: flex; overflow-x: auto; }
  .ws-item { flex: none; max-width: 220px; }
  .desk { height: auto; min-height: 70vh; }
  .brand h1, .gate-card h1, .empty-title, .admin-head h2 { font-size: 32px; }
  .gate-card, .setup-card { padding: 28px 18px 22px; }
  .stage { min-height: 280px; }
  .empty { min-height: 240px; }
  .composer { margin: 0 12px 12px; }
  .composer-bar .btn.primary { margin-left: 0; }
  .api-row { flex-wrap: wrap; }
  #results { grid-template-columns: 1fr; }
  .custom-size { grid-template-columns: 1fr 1fr; }
  .desk .banner, .desk .admin { margin-left: 12px; margin-right: 12px; }
}

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