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

:root {
  --primary: #2FB8B0;
  --primary-dark: #239690;
  --primary-light: #3CC8C4;
  --primary-tint: #e8f7f6;
  --bg: #f3f7f7;
  --field: #f5fafa;
  --card: #ffffff;
  --text: #2b2f3a;
  --muted: #7e9190;
  --border: #dce8e7;
  --success: #2eaa6e;
  --danger: #e25c5c;
  --warn: #d4900a;
  --warn-bg: #fff6e0;
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 2px 8px rgba(30,60,58,.06);
  --shadow-md: 0 4px 16px rgba(30,60,58,.08);
  --shadow-lg: 0 8px 24px rgba(30,60,58,.10);
}

body {
  font-family: "Inter", "Segoe UI", "Microsoft YaHei", "PingFang SC", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 导航栏 ---------- */
.navbar {
  background: var(--card);
  border-bottom: none;
  box-shadow: 0 1px 3px rgba(30,60,58,.06);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-inner {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 56px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}
.brand-logo { height: 32px; width: auto; display: block; }
.nav-links {
  display: flex;
  gap: 2px;
  flex: 1;
  min-width: 0;
  flex-wrap: wrap;
  justify-content: center;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 11px;
  border-radius: 8px;
  font-size: 13px;
  white-space: nowrap;
  transition: all .15s;
}
.nav-links a:hover { background: var(--bg); color: var(--text); }
.nav-links a.active { color: var(--primary); font-weight: 600; background: var(--primary-tint); box-shadow: inset 0 -2px 0 var(--primary); }
.nav-user { display: flex; align-items: center; gap: 8px; 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: 2px;
    justify-content: center;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { font-size: 13px; padding: 6px 12px; }
  .nav-links a.active { padding: 6px 10px; }
}

/* ---------- 布局 ---------- */
.container {
  max-width: 760px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 10px 56px;
  flex: 1;
}
.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 18px;
}
.page-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  padding: 0 6px;
}
.page-head h1 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; }
.page-head input[type="date"] { width: auto; max-width: 160px; margin-top: 0; flex-shrink: 0; padding: 6px 10px; font-size: 13px; }
.page-head h1.study-view-title { font-size: 16px; }
.page-head h1.edit-title { font-size: 16px; }
.page-head .btn { padding: 4px 12px; line-height: 1.3; }
.page-head .btn-sm { padding: 6px 12px; font-size: 13px; line-height: inherit; }
.section-title { font-size: 16px; font-weight: 700; letter-spacing: -0.01em; margin: 9px 0 12px; }
.page-head h1.greeting { font-size: 16px; }
.page-head:has(.greeting) { margin: -6px 0 5px; }
.page-head > .muted { font-size: 14px; }
.muted { color: var(--muted); }
.small { font-size: 12px; margin-top: 16px; }
.pre { white-space: pre-wrap; word-break: break-word; font-size: 14px; }
.chip {
  font-size: 12px;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--border);
  padding: 5px 11px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.card h3 { font-size: 15px; margin-bottom: 8px; }
.card > h3 { display: flex; align-items: center; gap: 7px; margin-bottom: 12px; }
.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}
.card-today { margin-bottom: 10px; }
.card-empty { text-align: center; padding: 13px 20px; }
.card-empty h2 { margin-bottom: 6px; font-size: 16px; }
.card-empty .muted { font-size: 14px; }
.card-empty .btn { margin-top: 16px; }
.card-success { border-left: 4px solid var(--success); }
.card-failure { border-left: 4px solid var(--danger); }
.card-insight { border-left: 4px solid var(--primary); }
.pill {
  margin-left: auto;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  background: var(--bg);
  padding: 2px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.view-grid { display: grid; gap: 14px; }
.view-grid .card { padding: 12px 16px; }
@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-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-tint); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 2px 8px rgba(47,184,176,.2); }
.btn-ghost { background: transparent; }
.btn-danger:hover { border-color: var(--danger); color: var(--danger); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; padding: 14px; font-size: 15px; font-weight: 600; }

/* ---------- 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: var(--radius-sm);
  font: inherit;
  font-weight: 400;
  font-size: 14px;
  background: var(--card);
  color: var(--text);
}
textarea { resize: none; overflow: hidden; min-height: 88px; line-height: 1.6; }
input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47,184,176,.15);
}
.log-form {
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}
.form-row { display: grid; gap: 14px; }
@media (min-width: 720px) { .form-row { grid-template-columns: 1fr 1fr; } }
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-weight: 400;
  font-size: 14px;
  cursor: pointer;
  margin-bottom: 0;
}
.checkbox-label input { width: auto; margin: 4px 0 0; }
.form-actions { display: flex; gap: 10px; margin-top: 8px; flex-wrap: wrap; }
.dashboard-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 16px; }
.dashboard-actions .btn { margin-top: 0; padding: 9px 16px; line-height: 1.6; }
.page-head .dashboard-actions { margin-top: 0; }

/* ---------- 登录注册 ---------- */
.auth-card {
  max-width: 400px;
  margin: 60px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
}
.auth-card h1 { font-size: 22px; margin-bottom: 20px; text-align: center; }
.auth-switch { margin-top: 18px; 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;
  flex-direction: column;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  box-shadow: var(--shadow);
  transition: border-color .15s, box-shadow .2s, transform .2s;
}
.log-item:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-1px); }
.log-link {
  display: flex;
  flex-direction: column;
  gap: 5px;
  text-decoration: none;
  color: var(--text);
  min-width: 0;
}
.log-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.log-tags { display: flex; gap: 5px; flex-wrap: nowrap; justify-content: flex-end; }
.log-date { display: inline-flex; align-items: center; gap: 5px; font-size: 14px; white-space: nowrap; color: var(--text); text-decoration: none; }
.log-date .tag-study,
.log-date .tag-work { background: none; border: none; padding: 0; }
.log-author { font-weight: 700; color: var(--primary); }
.log-date-text { font-weight: 400; color: var(--muted); font-size: 13px; }
.log-date-bold { font-weight: 600; font-size: 14px; }
.log-type { margin-left: 8px; font-weight: 400; color: var(--muted); }
.log-bottom { display: flex; align-items: center; gap: 8px; }
.log-bottom .log-preview { flex: 1; min-width: 0; }
.log-preview {
  color: var(--muted);
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: none;
}
.log-delete-form { display: inline-flex; }
.log-tags .btn { padding: 2px 10px; font-size: 12px; line-height: 1.6; }
.log-actions { display: flex; gap: 8px; align-items: center; justify-content: flex-end; }
.log-actions form { display: inline; }
.admin-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.admin-actions form { display: inline; }
.admin-actions button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- 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: var(--primary-tint); color: var(--primary); border-color: #b8e4e1; }
.tag-subject { background: var(--primary-tint); color: var(--primary); border-color: #b8e4e1; font-weight: 600; font-size: 11px; }
.tag-active { background: var(--primary); color: #fff; border-color: var(--primary); }
.tag-extra { background: var(--primary-tint); color: var(--primary); border-color: #b8e4e1; font-size: 11px; }
.tag-dur { background: #fff4e6; color: #b06a00; border-color: #ffe2b8; font-size: 11px; }
.tag-warn { background: #fff6e0; color: #b06a00; border-color: #ffe2b8; }
.tag-danger { background: #fdecec; color: #b53c3c; border-color: #f5cccc; }
.month-filter { display: flex; gap: 6px; flex-wrap: wrap; margin: -6px 0 5px; align-items: center; padding: 0 6px; }
.month-filter .tag { padding: 3px 10px; cursor: pointer; font-size: 13px; border-radius: 8px; }
.month-filter .tag-active { background: var(--primary-tint); color: var(--primary-dark); border-color: var(--primary); font-weight: 600; }

/* ---------- 任务日志任务 ---------- */
.tasks-section {
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
  margin-bottom: 12px;
  box-shadow: none;
}
.card-flat { margin-bottom: 12px; }
.card-flat label { margin-bottom: 0; }
.tasks-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.tasks-head h3 { margin: 0; font-size: 15px; }
.tasks-section > h3 { font-size: 15px; display: flex; align-items: center; gap: 7px; }

.dur-sum {
  display: none;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
  line-height: 1.6;
}
.dur-sum strong { color: var(--primary); }
.dur-sum .dur-display {
  display: inline-block;
  font-weight: 700;
  color: var(--primary);
  background: transparent;
  border: none;
  width: 7em;
  margin: 0;
  padding: 0;
  box-shadow: none !important;
  font-size: 14px;
}
.dur-display:focus { border: none; }

.task-row, .tomorrow-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
}
.task-row {
  background: #edf8f7;
}
.tomorrow-item {
  background: #edf8f7;
}
.task-row.extra { background: #e5f5f3; }
.task-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
}
.task-head-left { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.task-head .dur-sel { width: 44px; padding: 3px 2px; font-size: 13px; }
.task-head .item-subj { flex: 0 1 104px; min-width: 56px; max-width: 128px; width: auto; height: 30px; margin: 0; padding: 4px 8px; font-size: 13px; line-height: 1.2; text-align: center; }
.task-controls { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-left: auto; }
.task-controls .dur-sel { width: 44px; padding: 4px 2px; font-size: 13px; }
.item-subj { width: 92px; border: none; border-radius: 6px; padding: 3px 7px; font: inherit; font-size: 13px; background: transparent; font-weight: 600; color: var(--primary); }
.item-cont { width: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 7px 9px; font: inherit; font-size: 14px; resize: none; overflow: hidden; min-height: 34px; background: var(--card); line-height: 1.5; }
.task-body { padding: 0; }
.btn-delete {
  margin-left: auto;
  padding: 2px 10px;
  font-size: 12px;
  color: var(--muted);
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all .15s;
}
.btn-delete:hover { color: var(--danger); border-color: var(--danger); }
.task-text { font-size: 14px; word-break: break-word; }
.task-text.done-text { text-decoration: line-through; color: var(--muted); }
.task-meta { font-size: 11px; color: var(--muted); margin-top: 3px; }

.status-row { display: flex; align-items: center; gap: 8px; padding: 6px 4px 0; flex-wrap: wrap; }
.status-prefix { font-size: 13px; color: var(--muted); white-space: nowrap; }
.status-group { display: flex; gap: 6px; flex: 1; min-width: 0; flex-wrap: nowrap; }
.status-btn {
  flex: 1;
  min-width: 0;
  padding: 4px 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.2;
  white-space: nowrap;
  transition: background .12s, border-color .12s, color .12s;
}
.status-btn:hover { border-color: var(--primary); color: var(--text); }
.status-btn.active-done    { background: #e7f7ef; border-color: #bfe8d2; color: #1d7a4e; font-weight: 600; }
.status-btn.active-partial { background: #fff6e0; border-color: #ffe2b8; color: #b06a00; font-weight: 600; }
.status-btn.active-undone  { background: #fdecec; border-color: #f5cccc; color: #b53c3c; font-weight: 600; }

/* 添加任务/明日计划 卡片：复用 .task-head 行 + .item-cont 内容框 */
.task-add { margin-top: 12px; background: var(--primary-tint); border: 1px dashed #a8dbd8; border-radius: var(--radius-sm); padding: 10px 8px; display: flex; flex-direction: column; gap: 8px; }
.dur-pick { display: inline-flex; align-items: center; gap: 4px; }
.dur-sel { width: 50px; padding: 4px 4px; border: 1px solid var(--border); border-radius: 8px; font: inherit; font-size: 13px; background: #fff; }
.dur-unit { font-size: 12px; color: var(--muted); }

.tomorrow-item-view { font-size: 14px; padding: 5px 0; color: var(--text); }
.task-row-view {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.task-row-view:last-child { border-bottom: none; }
.task-meta-line { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.task-row-view .task-text { flex: none; word-break: break-word; padding-left: 23px; font-size: 14px; color: var(--text); }
.status-icon { font-size: 15px; flex-shrink: 0; }
.dur-banner {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  margin-bottom: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.task-line { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.task-title { font-size: 15px; font-weight: 600; color: var(--text); word-break: break-word; flex: 0 0 auto; }
.task-title.done-text { text-decoration: line-through; color: var(--muted); }
.task-tags { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; padding-left: 23px; margin-top: 2px; }
.note-wrap { padding: 0 4px; }
.note-input {
  width: 100%;
  border: 1px dashed var(--warn);
  border-radius: 8px;
  padding: 6px 9px;
  font: inherit;
  font-size: 13px;
  background: #fffbf0;
  color: var(--text);
  resize: none;
  overflow: hidden;
  min-height: 32px;
  line-height: 1.5;
}
.note-input:focus { outline: none; border-color: var(--warn); box-shadow: 0 0 0 3px rgba(212,144,10,.1); }
.task-note-view { font-size: 13px; color: var(--warn); padding: 2px 0 0; }

/* 吸底保存栏 */
.savebar {
  position: sticky;
  bottom: 0;
  margin: 18px -10px 0;
  padding: 12px 10px calc(12px + env(safe-area-inset-bottom));
  background: linear-gradient(rgba(243,247,247,0) 0%, var(--bg) 40%);
}

/* ---------- 心得广场 ---------- */
.feed-list { display: flex; flex-direction: column; gap: 14px; }
.feed-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.feed-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.feed-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 14px;
  gap: 8px;
}
.feed-author { font-weight: 700; color: var(--primary); }
.feed-head-left { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-width: 0; }
.feed-head-left .tag { font-weight: 500; }
.feed-date { color: var(--muted); font-size: 13px; }
.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; min-width: 0; }
.feed-tasks { flex-direction: column; align-items: flex-start; gap: 4px; }
.feed-task-list { width: 100%; }
.feed-task { display: flex; align-items: flex-start; gap: 6px; font-size: 13px; word-break: break-word; padding: 1px 0; }
.feed-task::before { content: "▸"; color: var(--primary); flex-shrink: 0; }
.feed-task-status { flex-shrink: 0; }

/* ---------- 表格 ---------- */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.table th, .table td {
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.table th { background: var(--bg); font-weight: 600; font-size: 13px; }
.table tr:last-child td { border-bottom: none; }
@media (max-width: 600px) {
  .table { font-size: 13px; }
  .table th, .table td { padding: 10px 10px; }
}

/* ---------- 提示消息 ---------- */
.flash {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  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; }

/* ---------- 附件 ---------- */
input[type="file"] { width: 100%; max-width: 420px; }
.att-list { display: flex; flex-direction: column; gap: 8px; }
.att-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.att-name { font-size: 14px; word-break: break-all; }
.att-name:hover { text-decoration: underline; }
.att-size { white-space: nowrap; }
.att-del-form { margin-left: auto; }
.att-del-form .btn-delete { margin-left: 0; }

/* ---------- 分割线 ---------- */
.section-divider { border: none; border-top: 1px solid var(--border); margin: 24px 0 20px; }

/* ---------- 广场标签配色 ---------- */
.tag-study { background: #eeedfe; color: #534ab7; border-color: #cecbf6; font-weight: 500; }
.tag-work { background: #fff4e6; color: #b06a00; border-color: #ffe2b8; font-weight: 500; }