:root {
  --bg: #f3f5fa;
  --panel: #ffffff;
  --panel-2: #eef1f7;
  --line: rgba(20, 30, 60, 0.12);
  --line-strong: rgba(20, 30, 60, 0.24);
  --fg: #161b2c;
  --muted: #5f6a80;
  --c1: #7c3aed;
  --c2: #0e7490;
  --danger: #dc2626;
  --radius: 14px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  background:
    radial-gradient(1100px 600px at 12% -10%, rgba(124, 58, 237, 0.09), transparent 60%),
    radial-gradient(900px 500px at 92% 0%, rgba(14, 116, 144, 0.07), transparent 55%),
    var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--c1); }
h1, h2 { margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
.sub { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
  height: 58px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 14px;
  white-space: nowrap;
}
.brand .orb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, var(--c1) 45%, var(--c2));
  box-shadow: 0 0 14px rgba(124, 58, 237, 0.45);
}
.tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 7px;
}
.topbar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}
.save-state {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  font-family: var(--mono);
}
.save-state.dirty { color: #b45309; }
.save-state.ok { color: #047857; }

/* ---------- 按钮 / 输入 ---------- */
.btn {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: var(--panel-2);
  color: var(--fg);
  font: inherit;
  font-size: 13.5px;
  padding: 7px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--c1); }
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: linear-gradient(120deg, var(--c1), #2563eb 55%, var(--c2));
  border-color: transparent;
  color: #fff;
  font-weight: 600;
}
.btn.primary:hover { filter: brightness(1.05); }
.btn:disabled { opacity: 0.5; cursor: default; transform: none; }
.btn.block { width: 100%; padding: 10px; }
.ghost {
  font-size: 13px;
  color: var(--muted);
  background: none;
  border: 0;
  padding: 4px 6px;
  cursor: pointer;
  font-family: inherit;
}
.ghost:hover { color: var(--fg); }
.ghost.danger:hover { color: var(--danger); }

.input {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--fg);
  font: inherit;
  padding: 9px 12px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.input::placeholder { color: #8a92a6; }
.input:focus { border-color: var(--c1); box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.14); }
.input:read-only { color: var(--muted); }
.input.mono { font-family: var(--mono); font-size: 13px; }

/* ---------- 登录页 ---------- */
.login-wrap {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(400px, 100%);
  background: linear-gradient(180deg, #ffffff, #fbfcff);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 30px 28px 22px;
  box-shadow: 0 30px 80px rgba(20, 30, 70, 0.14);
}
.login-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 14px;
  margin-bottom: 6px;
}
.login-brand .orb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, var(--c1) 45%, var(--c2));
  box-shadow: 0 0 16px rgba(124, 58, 237, 0.45);
}
.login-form { display: grid; gap: 12px; margin-top: 20px; }
.error {
  color: #b91c1c;
  background: rgba(220, 38, 38, 0.07);
  border: 1px solid rgba(220, 38, 38, 0.28);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 13px;
}
.back-link { display: inline-block; margin-top: 18px; font-size: 12.5px; color: var(--muted); }

/* ---------- 列表页 ---------- */
.page { max-width: 980px; margin: 0 auto; padding: 28px 20px 60px; }
.page-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.page-head h1 { font-size: 24px; }
.post-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.post-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: border-color 0.15s;
}
.post-item:hover { border-color: var(--line-strong); }
.post-main { min-width: 0; flex: 1; }
.post-title { display: flex; align-items: center; gap: 8px; font-size: 15.5px; font-weight: 600; }
.post-title a { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.badge.pin {
  color: #0e7490;
  border-color: rgba(14, 116, 144, 0.32);
  background: rgba(14, 116, 144, 0.1);
}
.badge {
  flex: none;
  font-size: 11px;
  font-weight: 500;
  color: #92400e;
  border: 1px solid rgba(180, 83, 9, 0.32);
  background: rgba(251, 191, 36, 0.16);
  padding: 0 7px;
  border-radius: 999px;
}
.post-meta {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 2px;
  font-family: var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.post-ops { display: flex; align-items: center; gap: 4px; flex: none; }
.empty { color: var(--muted); padding: 40px 0; text-align: center; }

.log {
  margin: 14px 0 0;
  padding: 12px 14px;
  background: #f7f8fc;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
  color: #334155;
  max-height: 220px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.notice {
  margin-bottom: 16px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13.5px;
  border: 1px solid var(--line-strong);
  background: var(--panel-2);
}
.notice.ok { border-color: rgba(4, 120, 87, 0.35); background: rgba(4, 120, 87, 0.07); color: #065f46; }
.notice.err { border-color: rgba(220, 38, 38, 0.32); background: rgba(220, 38, 38, 0.07); color: #991b1b; }

/* ---------- 编辑器 ---------- */
body.editor-body { height: 100svh; display: flex; flex-direction: column; overflow: hidden; }
.editor-page {
  flex: 1;
  min-height: 0;
  width: 100%;
  max-width: 1500px;
  margin: 0 auto;
  padding: 14px 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.fields { display: grid; gap: 8px; }
.input.title { font-size: 18px; font-weight: 600; padding: 10px 14px; }
.field-row { display: grid; grid-template-columns: 1.1fr 0.7fr 1.2fr; gap: 8px; }
.field { display: grid; gap: 3px; }
.field span { font-size: 11.5px; color: var(--muted); padding-left: 2px; }

.pin-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}
.pin-toggle input {
  width: 15px;
  height: 15px;
  margin: 0;
  accent-color: var(--c1);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  padding: 5px 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}
.toolbar button {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: #4b5563;
  font-family: var(--mono);
  font-size: 12.5px;
  min-width: 32px;
  height: 30px;
  padding: 0 8px;
  border-radius: 7px;
  cursor: pointer;
}
.toolbar button:hover { background: var(--panel-2); border-color: var(--line); color: var(--fg); }
.toolbar-hint { margin-left: auto; font-size: 11.5px; color: var(--muted); padding-right: 4px; }

.panes { flex: 1; min-height: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
#body {
  width: 100%;
  height: 100%;
  min-height: 0;
  resize: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.75;
  padding: 16px 18px;
  outline: none;
  tab-size: 2;
}
#body:focus { border-color: var(--line-strong); }
#preview {
  overflow: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 20px;
}
#preview.dragover { border-color: var(--c2); }
#log { margin: 0; flex: none; max-height: 150px; }

/* ---------- Markdown 预览排版 ---------- */
.prose { font-size: 15px; line-height: 1.8; color: #263043; word-wrap: break-word; }
.prose > :first-child { margin-top: 0; }
.prose h1 { font-size: 1.7em; margin: 1.2em 0 0.5em; }
.prose h2 { font-size: 1.4em; margin: 1.3em 0 0.5em; padding-bottom: 0.25em; border-bottom: 1px solid var(--line); }
.prose h3 { font-size: 1.18em; margin: 1.2em 0 0.4em; }
.prose h4 { font-size: 1em; margin: 1em 0 0.4em; }
.prose p { margin: 0.85em 0; }
.prose a { color: var(--c2); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--fg); }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0.8em 0; }
.prose li { margin: 0.3em 0; }
.prose blockquote {
  margin: 1em 0;
  padding: 0.2em 0 0.2em 1em;
  border-left: 3px solid var(--c1);
  color: var(--muted);
  background: rgba(124, 58, 237, 0.06);
}
.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: rgba(20, 30, 60, 0.06);
  border-radius: 5px;
  padding: 0.12em 0.4em;
}
.prose pre {
  background: #f7f8fc;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  overflow: auto;
  margin: 1em 0;
}
.prose pre code { background: none; padding: 0; font-size: 12.5px; line-height: 1.7; }
.prose img { max-width: 100%; border-radius: 8px; display: block; margin: 1em 0; }
.prose table { border-collapse: collapse; width: 100%; margin: 1em 0; font-size: 13.5px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 7px 10px; text-align: left; }
.prose th { background: var(--panel-2); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 1.6em 0; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 14px);
  background: var(--panel-2);
  border: 1px solid var(--line-strong);
  color: var(--fg);
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.ok { border-color: rgba(4, 120, 87, 0.45); }
.toast.err { border-color: rgba(220, 38, 38, 0.45); }

/* ---------- 移动端 ---------- */
@media (max-width: 820px) {
  body.editor-body { height: auto; overflow: auto; }
  .editor-page { min-height: calc(100svh - 58px); }
  .field-row { grid-template-columns: 1fr 1fr; }
  .field-row .field:last-child { grid-column: 1 / -1; }
  .panes { grid-template-columns: 1fr; }
  #body { height: 52svh; }
  #preview { max-height: 60svh; }
  .toolbar-hint { display: none; }
  .page-head { flex-direction: column; align-items: flex-start; }
  .post-item { align-items: flex-start; flex-direction: column; gap: 8px; }
  .post-ops { width: 100%; justify-content: flex-end; }
}