* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #4f6ef7;
  --primary-dark: #3a55d9;
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #2b2f3a;
  --muted: #8a90a3;
  --border: #e3e7f0;
  --success: #2eaa6e;
  --danger: #e25c5c;
  --warn-bg: #fff6e0;
  --radius: 12px;
}

body {
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 导航栏 ---------- */
.navbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 16px;
  min-height: 56px;
}
.brand {
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  padding: 10px 0;
}
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 13px;
  white-space: nowrap;
}
.nav-links a:hover { background: var(--bg); color: var(--text); }
.nav-user { display: flex; align-items: center; gap: 8px; padding: 6px 0; margin-left: auto; }
.username { font-size: 13px; color: var(--muted); white-space: nowrap; }

@media (max-width: 600px) {
  .nav-inner { flex-wrap: wrap; padding: 0 12px; gap: 0; min-height: auto; }
  .brand { flex: 1; font-size: 15px; padding: 12px 0; }
  .nav-user { padding: 12px 0; }
  .username { display: none; }
  .nav-links {
    order: 3;
    flex: 0 0 100%;
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    border-top: 1px solid var(--border);
    padding: 6px 0;
    gap: 0;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { font-size: 13px; padding: 6px 12px; }
}

/* ---------- 布局 ---------- */
.container {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 28px 20px 48px;
  flex: 1;
}
.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 16px;
}
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}
.page-head h1 { font-size: 24px; }
.section-title { font-size: 18px; margin: 28px 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 12px; margin-top: 16px; }
.pre { white-space: pre-wrap; word-break: break-word; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card h3 { font-size: 15px; margin-bottom: 8px; }
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.card-today { margin-bottom: 8px; }
.card-empty { text-align: center; padding: 36px 20px; }
.card-empty h2 { margin-bottom: 6px; }
.card-empty .btn { margin-top: 14px; }
.card-success { border-left: 4px solid var(--success); }
.card-failure { border-left: 4px solid var(--danger); }
.card-insight { border-left: 4px solid var(--primary); }

.view-grid { display: grid; gap: 14px; }
@media (min-width: 720px) {
  .view-grid { grid-template-columns: 1fr 1fr; }
  .view-grid .card:nth-child(1),
  .view-grid .card:nth-child(2),
  .view-grid .card-insight { grid-column: 1 / -1; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost { background: transparent; }
.btn-danger:hover { border-color: var(--danger); color: var(--danger); }
.btn-sm { padding: 4px 12px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- 表单 ---------- */
label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 14px; }
input[type="text"], input[type="password"], input[type="date"], textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-weight: 400;
  background: var(--card);
  color: var(--text);
  resize: vertical;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,.12);
}
.log-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.form-row { display: grid; gap: 0 16px; }
@media (min-width: 720px) { .form-row { grid-template-columns: 1fr 1fr; } }
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
  cursor: pointer;
}
.checkbox-label input { width: auto; margin: 0; }
.form-actions { display: flex; gap: 10px; margin-top: 8px; }

/* ---------- 登录注册 ---------- */
.auth-card {
  max-width: 400px;
  margin: 48px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.auth-card h1 { font-size: 22px; margin-bottom: 20px; text-align: center; }
.auth-switch { margin-top: 16px; text-align: center; font-size: 14px; color: var(--muted); }
.auth-switch a { color: var(--primary); }

/* ---------- 日志列表 ---------- */
.log-list { display: flex; flex-direction: column; gap: 10px; }
.log-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  text-decoration: none;
  color: var(--text);
  transition: border-color .15s;
}
.log-item:hover { border-color: var(--primary); }
.log-item-row { justify-content: space-between; }
.log-link {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text);
  flex: 1;
  min-width: 0;
}
.log-date { font-weight: 600; font-size: 14px; white-space: nowrap; }
.log-preview {
  color: var(--muted);
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.log-actions { display: flex; gap: 8px; align-items: center; }
.log-actions form { display: inline; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--border);
  white-space: nowrap;
}
.tag-share { background: #eef1ff; color: var(--primary); border-color: #d6ddff; }
.tag-active { background: var(--primary); color: #fff; border-color: var(--primary); }
.month-filter { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.month-filter .tag { padding: 4px 14px; }

/* ---------- 心得广场 ---------- */
.feed-list { display: flex; flex-direction: column; gap: 14px; }
.feed-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 14px;
}
.feed-author { font-weight: 700; color: var(--primary); }
.feed-date { color: var(--muted); }
.feed-section { display: flex; gap: 8px; margin-top: 8px; font-size: 14px; }
.feed-label { color: var(--muted); white-space: nowrap; flex-shrink: 0; }
.feed-section .pre { flex: 1; }

/* ---------- 表格 ---------- */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table th, .table td {
  padding: 12px 16px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.table th { background: var(--bg); font-weight: 600; }
.table tr:last-child td { border-bottom: none; }

/* ---------- 提示消息 ---------- */
.flash {
  padding: 10px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}
.flash-ok { background: #e7f7ef; color: #1d7a4e; border: 1px solid #bfe8d2; }
.flash-error { background: #fdecec; color: #b53c3c; border: 1px solid #f5cccc; }
.flash-warn { background: var(--warn-bg); color: #9a7016; border: 1px solid #f0e0b0; }