/* ============ tokens ============ */
:root {
  --bg: #f6f6f7;
  --surface: #ffffff;
  --surface-2: #fbfbfc;
  --text: #18181b;
  --text-2: #52525b;
  --muted: #8b8b94;
  --border: #e6e6ea;
  --border-strong: #d4d4d8;
  --accent: #5b5bd6;
  --accent-hover: #4a4ac4;
  --accent-soft: #eeeefc;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --ok: #16a34a;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 1px 2px rgba(24, 24, 27, 0.05);
  --shadow: 0 1px 2px rgba(24, 24, 27, 0.04), 0 10px 30px rgba(24, 24, 27, 0.07);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; margin: 0; letter-spacing: -0.015em; }

code, pre { font-family: var(--mono); font-size: 13px; }

/* ============ layout ============ */
section[id] { scroll-margin-top: 80px; }

.wrap {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 246, 247, 0.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  height: 62px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 650;
  font-size: 15.5px;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }

.brand-dot {
  width: 22px;
  height: 22px;
  border-radius: 7px;
  background: linear-gradient(135deg, #7c7cf0, #5b5bd6 55%, #3f3fb0);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
  flex: none;
}

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  color: var(--text-2);
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
}
.nav a:hover { background: var(--surface); color: var(--text); text-decoration: none; }
.nav a.active { color: var(--text); background: var(--surface); box-shadow: var(--shadow-sm); }

/* ============ hero ============ */
/* 注意：用 padding-top/bottom 而不是简写，避免覆盖 .wrap 的水平内边距 */
.hero { padding-top: 56px; padding-bottom: 8px; }

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero p.lead {
  margin: 12px 0 0;
  color: var(--text-2);
  font-size: 16px;
  max-width: 620px;
}

.stage {
  margin-top: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.stage-media {
  position: relative;
  background:
    linear-gradient(45deg, #f0f0f2 25%, transparent 25%) 0 0 / 20px 20px,
    linear-gradient(-45deg, #f0f0f2 25%, transparent 25%) 0 10px / 20px 20px,
    linear-gradient(45deg, transparent 75%, #f0f0f2 75%) 10px -10px / 20px 20px,
    linear-gradient(-45deg, transparent 75%, #f0f0f2 75%) -10px 0 / 20px 20px,
    #fafafa;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  max-height: 62vh;
  padding: 18px;
}

.stage-media img {
  max-width: 100%;
  max-height: calc(62vh - 36px);
  object-fit: contain;
  border-radius: 10px;
  display: block;
  transition: opacity 0.25s ease;
}

.stage-media img.loading { opacity: 0.25; }

.stage-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
  flex-wrap: wrap;
}

.stage-meta {
  font-size: 12.5px;
  color: var(--muted);
  font-family: var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 200px;
  min-width: 0;
}

/* ============ buttons ============ */
.btn {
  appearance: none;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  font-weight: 550;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: background 0.15s, border-color 0.15s, transform 0.06s;
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); border-color: var(--muted); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-2); border-color: var(--border); }

.btn-danger { color: var(--danger); border-color: #f3c9c9; background: var(--danger-soft); }
.btn-danger:hover { background: #fde8e8; border-color: #e9a8a8; }

.btn-sm { padding: 5px 10px; font-size: 12.5px; }

/* ============ sections ============ */
.section { padding-top: 52px; padding-bottom: 52px; }
.section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.section-head h2 { font-size: 20px; font-weight: 650; }
.section-head .hint { color: var(--muted); font-size: 13.5px; }
.section-head > .hint:last-child { margin-left: auto; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

/* ============ api docs ============ */
.endpoint {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.endpoint-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.method {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 3px 7px;
  border-radius: 5px;
  background: var(--accent-soft);
  color: var(--accent);
  flex: none;
}
.method.post { background: #e9f7ef; color: #15803d; }
.method.del { background: var(--danger-soft); color: var(--danger); }

.endpoint-head code.path { font-size: 13.5px; font-weight: 600; color: var(--text); }
.endpoint-head .desc { color: var(--muted); font-size: 13px; margin-left: auto; }

.endpoint-body { padding: 14px 16px; }
.endpoint-body p { margin: 0 0 10px; color: var(--text-2); font-size: 14px; }
.endpoint-body p:last-child { margin-bottom: 0; }

pre.code {
  margin: 10px 0 0;
  padding: 12px 14px;
  background: #17171c;
  color: #e4e4e7;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  line-height: 1.65;
  font-size: 12.5px;
}
pre.code .cmt { color: #8b8b96; }

.param-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  margin: 10px 0 0;
}
.param-table th,
.param-table td {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.param-table th { color: var(--muted); font-weight: 550; font-size: 12.5px; }
.param-table td:first-child { font-family: var(--mono); font-size: 12.5px; color: var(--accent); white-space: nowrap; }
.param-table td:last-child { color: var(--text-2); }
.param-table tr:last-child td { border-bottom: none; }

/* ============ gallery ============ */
.gallery {
  column-count: 5;
  column-width: 180px;
  column-gap: 12px;
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: 12px;
  border-radius: 11px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: zoom-in;
  position: relative;
  display: block;
}

.gallery-item img {
  width: 100%;
  display: block;
  opacity: 0;
  transition: opacity 0.4s ease;
  background: #f0f0f2;
  min-height: 60px;
}
.gallery-item img.loaded { opacity: 1; }

.gallery-item:hover { border-color: var(--border-strong); }

.gallery-item .cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 22px 9px 8px;
  font-size: 11.5px;
  font-family: var(--mono);
  color: #fff;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.72), transparent);
  opacity: 0;
  transition: opacity 0.18s;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.gallery-item:hover .cap { opacity: 1; }

.empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  font-size: 14px;
}

/* ============ lightbox ============ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(12, 12, 14, 0.9);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 100%;
  max-height: 82vh;
  border-radius: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
}
.lightbox-bar {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(28, 28, 33, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 8px 10px;
  border-radius: 11px;
  color: #e4e4e7;
  font-size: 12.5px;
  font-family: var(--mono);
  max-width: calc(100vw - 48px);
}
.lightbox-bar span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.lightbox-bar .btn { flex: none; }
.lightbox-close {
  position: absolute;
  top: 18px;
  right: 22px;
  background: rgba(255, 255, 255, 0.12);
  border: none;
  color: #fff;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}
.lightbox-close:hover { background: rgba(255, 255, 255, 0.22); }

/* ============ forms / admin ============ */
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 6px;
}
.field .sub { font-weight: 400; color: var(--muted); font-size: 12.5px; }

input[type="text"],
input[type="password"],
input[type="number"],
select {
  width: 100%;
  font: inherit;
  font-size: 14px;
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91, 91, 214, 0.13);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

/* 登录遮罩 */
.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.auth-gate.hidden { display: none; }

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 30px 26px;
  box-shadow: var(--shadow);
}
.auth-card h2 { font-size: 19px; margin-bottom: 6px; }
.auth-card .desc { color: var(--muted); font-size: 13.5px; margin: 0 0 22px; }

/* 上传区 */
.dropzone {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 34px 20px;
  text-align: center;
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dropzone .big { font-size: 15px; font-weight: 600; margin-bottom: 5px; }
.dropzone .small { font-size: 13px; color: var(--muted); }

.mode-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mode-opt {
  position: relative;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  display: block;
}
.mode-opt:hover { border-color: var(--muted); }
.mode-opt input { position: absolute; opacity: 0; pointer-events: none; }
.mode-opt .t { font-size: 14px; font-weight: 600; display: block; margin-bottom: 2px; }
.mode-opt .d { font-size: 12.5px; color: var(--muted); display: block; line-height: 1.45; }
.mode-opt:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

/* 进度 */
.queue { margin-top: 18px; display: flex; flex-direction: column; gap: 8px; }

.qitem {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: var(--surface-2);
  font-size: 13px;
}
.qitem-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 7px;
}
.qitem-name {
  font-family: var(--mono);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}
.qitem-status { font-size: 12px; color: var(--muted); flex: none; }
.qitem-status.ok { color: var(--ok); }
.qitem-status.err { color: var(--danger); }

.bar {
  height: 4px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}
.bar > i {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.2s ease;
}
.qitem.done .bar > i { background: var(--ok); }
.qitem.fail .bar > i { background: var(--danger); }

/* 管理列表 */
.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 12px;
}

.thumb-card {
  border: 1px solid var(--border);
  border-radius: 11px;
  overflow: hidden;
  background: var(--surface);
  display: flex;
  flex-direction: column;
}
.thumb-card .pic {
  aspect-ratio: 4 / 3;
  background: #f0f0f2;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.thumb-card .pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.thumb-card .info {
  padding: 8px 9px 9px;
  border-top: 1px solid var(--border);
}
.thumb-card .nm {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.thumb-card .sz { font-size: 11px; color: var(--muted); }
.thumb-card .acts { display: flex; gap: 5px; margin-top: 7px; }
.thumb-card .acts .btn { flex: 1; justify-content: center; }

/* toast */
.toast-host {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}
.toast {
  background: #1c1c22;
  color: #f4f4f5;
  padding: 9px 16px;
  border-radius: 99px;
  font-size: 13px;
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.22);
  animation: toastIn 0.22s ease;
  max-width: min(90vw, 460px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.toast.err { background: #991b1b; }
.toast.ok { background: #14532d; }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 26px 0 40px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 20px;
}
.site-footer .wrap { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* ============ responsive ============ */
@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .hero { padding-top: 36px; padding-bottom: 4px; }
  .section { padding-top: 38px; padding-bottom: 38px; }
  .gallery { columns: 2 140px; column-gap: 9px; }
  .gallery-item { margin-bottom: 9px; }
  .mode-group { grid-template-columns: 1fr; }
  .stage-media { min-height: 220px; }
  .nav a { padding: 6px 9px; font-size: 13px; }
  .endpoint-head .desc { margin-left: 0; width: 100%; }
  .section-head > .hint:last-child { margin-left: 0; flex-basis: 100%; }
}