/* 共享备忘录 · 高级简约主题（纯白/极浅灰 + 柔和圆角 + 居中内容） */

:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --border: #ebedf0;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eef4ff;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --success: #16a34a;
  --success-soft: #f0fdf4;
  --info-soft: #eff6ff;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: 720px; margin: 0 auto; padding: 0 20px; }

/* ---- 顶栏 ---- */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand { font-size: 18px; font-weight: 700; color: var(--text); letter-spacing: .5px; }
.brand:hover { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 16px; }
.nav-link { color: var(--muted); font-size: 14px; }
.nav-link:hover { color: var(--text); }
.nav-user { color: var(--muted); font-size: 13px; max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- 主体 ---- */
.main { padding-top: 28px; padding-bottom: 60px; }

/* ---- 卡片 ---- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 28px;
  margin-bottom: 18px;
}

.memo-grid { display: flex; flex-direction: column; gap: 18px; }

.memo.is-mine { border-color: #c7d9f7; }

.memo-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.memo-title { margin: 0 0 2px; font-size: 19px; font-weight: 700; }
.memo-meta { color: var(--muted); font-size: 13px; }
.memo-body { margin-top: 12px; word-break: break-word; overflow-wrap: break-word; }
.memo-actions { display: flex; gap: 8px; flex-shrink: 0; }

/* ---- 标题 / 页标题 ---- */
.page-title { margin: 0 0 18px; font-size: 24px; font-weight: 700; }

/* ---- 表单 ---- */
.form-card { max-width: 440px; margin: 30px auto; }
.form label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.form input[type=text],
.form input[type=email],
.form input[type=password],
.form textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.form input:focus, .form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form textarea { resize: vertical; line-height: 1.6; font-family: inherit; }

/* ---- 按钮 ---- */
.btn {
  display: inline-block;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid transparent;
  border-radius: 9px;
  cursor: pointer;
  text-align: center;
  transition: background .15s, color .15s;
}
.btn:hover { background: #dbe7fe; color: var(--accent-hover); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-danger:hover { background: #fee2e2; color: var(--danger); }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-block { display: block; width: 100%; }

/* ---- 提示 ---- */
.alert { padding: 10px 14px; border-radius: 9px; font-size: 14px; margin-bottom: 16px; }
.alert-success { background: var(--success-soft); color: var(--success); }
.alert-error { background: var(--danger-soft); color: var(--danger); }
.alert-info { background: var(--info-soft); color: var(--accent); }

/* ---- 空状态 ---- */
.empty { text-align: center; padding: 60px 28px; }
.empty-title { font-size: 18px; font-weight: 700; margin: 0 0 8px; }

/* ---- 筛选栏 ---- */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.filter-label { color: var(--muted); font-size: 14px; }
.filter-bar select {
  padding: 8px 12px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 9px;
  outline: none;
  cursor: pointer;
}
.filter-bar select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---- 文本辅助 ---- */
.muted { color: var(--muted); }
.center { text-align: center; }

/* ---- 脚注 ---- */
.site-footer {
  padding: 24px 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  border-top: 1px solid var(--border);
}

/* ---- Markdown 渲染样式 ---- */
.memo-body h1, .memo-body h2, .memo-body h3,
.memo-body h4, .memo-body h5, .memo-body h6 { margin: .8em 0 .4em; line-height: 1.4; }
.memo-body h1 { font-size: 1.5em; }
.memo-body h2 { font-size: 1.3em; }
.memo-body h3 { font-size: 1.15em; }
.memo-body p { margin: .5em 0; }
.memo-body ul, .memo-body ol { padding-left: 1.4em; margin: .5em 0; }
.memo-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .9em;
  background: #f3f4f6;
  padding: .15em .4em;
  border-radius: 5px;
}
.memo-body pre {
  background: #f6f7f9;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 14px;
  overflow-x: auto;
}
.memo-body pre code { background: none; padding: 0; }
.memo-body blockquote {
  margin: .6em 0;
  padding: .2em 1em;
  border-left: 3px solid var(--border);
  color: var(--muted);
}
.memo-body hr { border: none; border-top: 1px solid var(--border); margin: 1.2em 0; }

/* ---- 响应式 ---- */
@media (max-width: 560px) {
  .card { padding: 18px 20px; }
  .nav-user { display: none; }
  .memo-head { flex-direction: column; }
}