/* =========================================================
   CourseFlow 管理后台
   设计令牌与官网 style.css 同源（绿色、圆角、克制阴影）
   ========================================================= */

:root {
  --primary: #4f8f62;
  --primary-soft: #6ba87a;
  --light: #eaf3ec;
  --bg: #f7f8f5;
  --text: #1f2328;
  --secondary: #4a5258;
  --muted: #7a8288;
  --divider: #e8ece8;
  --input: #f5f7f9;
  --border: #e6e8eb;
  --danger: #b56b6b;
  --danger-bg: #fdf3f3;

  --radius: 16px;
  --shadow-card: 0 8px 30px rgba(31, 35, 40, 0.05);
  --shadow-lift: 0 16px 44px rgba(31, 35, 40, 0.12);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* 编辑器打开时锁住背景滚动 */
body.is-locked {
  overflow: hidden;
}

h1,
h2,
h3,
p {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  color: var(--secondary);
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 品牌点阵 ---------- */

.auth__logo {
  display: inline-block;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--text)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cg fill='%23fff'%3E%3Crect x='8' y='8' width='4' height='4' rx='1.2'/%3E%3Crect x='8' y='14' width='4' height='4' rx='1.2'/%3E%3Crect x='8' y='20' width='4' height='4' rx='1.2'/%3E%3Crect x='14' y='8' width='4' height='4' rx='1.2'/%3E%3Crect x='14' y='14' width='4' height='4' rx='1.2'/%3E%3Crect x='14' y='20' width='4' height='4' rx='1.2'/%3E%3C/g%3E%3Cg fill='%238fd3a5'%3E%3Crect x='20' y='11' width='4' height='4' rx='1.2'/%3E%3Crect x='20' y='17' width='4' height='4' rx='1.2'/%3E%3Crect x='20' y='23' width='4' height='4' rx='1.2'/%3E%3C/svg%3E")
    center / cover no-repeat;
}

.auth__logo--sm {
  width: 26px;
  height: 26px;
  border-radius: 7px;
}

/* ---------- 登录 ---------- */

.auth {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(56% 42% at 82% 0%, rgba(79, 143, 98, 0.12), transparent 70%),
    radial-gradient(44% 38% at 8% 100%, rgba(79, 143, 98, 0.1), transparent 70%),
    var(--bg);
}

.auth__card {
  width: min(360px, 100%);
  padding: 34px 30px 24px;
  border-radius: 22px;
  background: #fff;
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-lift);
  text-align: center;
}

.auth__card h1 {
  margin-top: 14px;
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.auth__sub {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--muted);
}

.auth__form {
  margin-top: 22px;
  display: grid;
  gap: 13px;
  text-align: left;
}

.fld span {
  display: block;
  font-size: 12.5px;
  color: var(--secondary);
  margin-bottom: 5px;
}

.fld input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border-radius: 11px;
  border: 1px solid transparent;
  background: var(--input);
  font: inherit;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}

.fld input:focus {
  background: #fff;
  border-color: var(--primary-soft);
}

.auth__error {
  font-size: 12.5px;
  color: var(--danger);
  margin: -3px 0 0;
}

.auth__foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--divider);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 18px;
  border-radius: 11px;
  font-size: 13.5px;
  font-weight: 500;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}

.btn:active {
  transform: scale(0.98);
}

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

.btn--primary:hover {
  background: #457f56;
  box-shadow: 0 6px 16px rgba(79, 143, 98, 0.28);
}

.btn--primary[disabled] {
  opacity: 0.6;
  pointer-events: none;
}

.btn--ghost {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--secondary);
  height: 34px;
}

.btn--ghost:hover {
  border-color: var(--primary-soft);
  color: var(--primary);
}

.linklike {
  color: var(--primary);
  font-size: inherit;
  padding: 0;
}

.linklike:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 布局 ---------- */

.shell {
  display: grid;
  grid-template-columns: 208px minmax(0, 1fr);
  min-height: 100vh;
}

.side {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  background: #fff;
  border-right: 1px solid var(--divider);
}

.side__brand {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 2px 8px 16px;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.side__brand b {
  font-weight: 650;
}

.side__brand em {
  font-style: normal;
  color: var(--primary-soft);
  font-weight: 500;
}

.side__nav {
  display: grid;
  gap: 4px;
}

.side__nav a {
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--secondary);
  font-size: 13.5px;
  transition: background 0.2s, color 0.2s;
}

.side__nav a:hover {
  background: var(--bg);
  color: var(--text);
}

.side__nav a.is-active {
  background: var(--light);
  color: var(--primary);
  font-weight: 550;
}

.side__foot {
  margin-top: auto;
  padding: 12px 8px 0;
  border-top: 1px solid var(--divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12.5px;
}

.side__who {
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.main {
  padding: 26px 30px 40px;
  min-width: 0;
}

.main__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.main__head h2 {
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.tools {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.ipt {
  height: 36px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  font: inherit;
  font-size: 13px;
  color: var(--text);
  outline: none;
}

.ipt:focus {
  border-color: var(--primary-soft);
}

/* ---------- 面板与统计卡 ---------- */

.panel {
  background: #fff;
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 18px 20px;
  margin-bottom: 16px;
}

.panel h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--secondary);
}

.panel--table {
  padding: 6px 0 12px;
  overflow-x: auto;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.stat {
  background: #fff;
  border: 1px solid var(--divider);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 14px 16px;
}

.stat b {
  display: block;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.stat span {
  font-size: 12.5px;
  color: var(--muted);
}

.stat--accent b {
  color: var(--primary);
}

/* ---------- 趋势条形图（纯 CSS） ---------- */

.trend {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  align-items: end;
  gap: 6px;
  height: 132px;
  padding-top: 6px;
}

.trend__col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 0;
  height: 100%;
  justify-content: flex-end;
}

.trend__bar {
  width: 100%;
  max-width: 34px;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--primary-soft), var(--primary));
  min-height: 2px;
  transition: height 0.4s ease;
}

.trend__bar[data-zero] {
  background: var(--divider);
}

.trend__num {
  font-size: 11px;
  color: var(--secondary);
  line-height: 1;
}

.trend__day {
  font-size: 10.5px;
  color: var(--muted);
  line-height: 1.2;
  white-space: nowrap;
}

/* ---------- 导入质量条 ---------- */

.quality__bar {
  display: flex;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--divider);
}

.quality__bar i {
  display: block;
  height: 100%;
}

.quality__bar .q-success {
  background: var(--primary);
}

.quality__bar .q-failed {
  background: var(--danger);
}

.quality__legend {
  display: flex;
  gap: 18px;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--secondary);
  flex-wrap: wrap;
}

.quality__legend i {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 3px;
  margin-right: 5px;
}

/* ---------- 表格 ---------- */

.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  min-width: 720px;
}

.tbl th {
  text-align: left;
  font-weight: 550;
  color: var(--muted);
  font-size: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--divider);
  white-space: nowrap;
}

.tbl td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--bg);
  vertical-align: middle;
  white-space: nowrap;
}

.tbl td.is-wrap {
  white-space: normal;
  max-width: 260px;
}

.tbl tr:hover td {
  background: #fbfcfa;
}

.tbl .is-empty td {
  text-align: center;
  color: var(--muted);
  padding: 34px 0;
}

.tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: var(--bg);
  color: var(--secondary);
}

.tag--ok {
  background: var(--light);
  color: var(--primary);
}

.tag--bad {
  background: var(--danger-bg);
  color: var(--danger);
}

.tag--admin {
  background: #1f2328;
  color: #fff;
}

.rowbtn {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--secondary);
  transition: border-color 0.2s, color 0.2s;
}

.rowbtn:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.rowbtn--enable:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ---------- 分页 ---------- */

.pager {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 12px 16px 2px;
  font-size: 12.5px;
  color: var(--muted);
}

.pager button {
  padding: 5px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 12.5px;
  color: var(--secondary);
}

.pager button:hover:not([disabled]) {
  border-color: var(--primary-soft);
  color: var(--primary);
}

.pager button[disabled] {
  opacity: 0.4;
  cursor: default;
}

/* ---------- 公告编辑器 ---------- */

.editor {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  place-items: center;
  padding: 24px;
}

.editor__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(16, 26, 20, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.editor__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(1080px, 100%);
  height: min(760px, 92vh);
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--shadow-lift);
  overflow: hidden;
  animation: ed-in 0.28s cubic-bezier(0.22, 0.61, 0.36, 1);
}

@keyframes ed-in {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
  }
}

.editor__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--divider);
}

.editor__head h3 {
  font-size: 16px;
  font-weight: 650;
}

.editor__x {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--muted);
  transition: background 0.2s, color 0.2s;
}

.editor__x:hover {
  background: var(--input);
  color: var(--text);
}

.editor__x svg {
  width: 16px;
  height: 16px;
}

.editor__meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 14px;
  padding: 16px 20px 12px;
}

.editor__toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 20px 12px;
  flex-wrap: wrap;
}

.tbtn {
  min-width: 32px;
  height: 30px;
  padding: 0 9px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 13px;
  color: var(--secondary);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.tbtn:hover {
  border-color: var(--primary-soft);
  color: var(--primary);
  background: var(--light);
}

.tbtn--wide {
  padding: 0 14px;
}

.editor__sep {
  width: 1px;
  height: 18px;
  background: var(--divider);
  margin: 0 4px;
}

.editor__count {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
}

.editor__count.is-over {
  color: var(--danger);
  font-weight: 600;
}

.editor__body {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--divider);
  border-top: 1px solid var(--divider);
}

.editor__src {
  border: none;
  outline: none;
  resize: none;
  padding: 16px 20px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text);
  background: #fff;
}

.editor__preview {
  overflow-y: auto;
  padding: 16px 20px;
  background: #fdfefc;
}

.editor__foot {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-top: 1px solid var(--divider);
}

.editor__spacer {
  margin-left: auto;
}

.editor__err {
  font-size: 12.5px;
  color: var(--danger);
}

.chk {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--secondary);
  cursor: pointer;
}

/* ---------- 版本发布编辑器（复用 .editor 外壳的紧凑表单形态） ---------- */

.editor__panel--form {
  width: min(620px, 100%);
  height: auto;
  max-height: 92vh;
}

.rform {
  display: grid;
  gap: 13px;
  padding: 18px 20px;
  overflow-y: auto;
}

.rform__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
}

.rform .ipt--block {
  width: 100%;
  height: 40px;
  border: 1px solid transparent;
  background: var(--input);
  border-radius: 11px;
}

.rform .ipt--block:focus {
  background: #fff;
  border-color: var(--primary-soft);
}

.rform__notes {
  width: 100%;
  min-height: 120px;
  padding: 10px 12px;
  border-radius: 11px;
  border: 1px solid transparent;
  background: var(--input);
  font: inherit;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  outline: none;
  resize: vertical;
  transition: border-color 0.2s, background 0.2s;
}

.rform__notes:focus {
  background: #fff;
  border-color: var(--primary-soft);
}

.hint-block {
  font-size: 13px;
  color: var(--secondary);
  line-height: 1.8;
}

@media (max-width: 860px) {
  .rform__row {
    grid-template-columns: 1fr;
  }
}

/* ---------- 官网管理：文案表单 ---------- */

/* 字段数量由接口决定，按可用宽度自动折行，不写死列数 */
.sform {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
}

.sform textarea {
  min-height: 76px;
}

/* 多行文案独占整行：它们通常是一整句话，挤在半行里换行太碎 */
.sform__wide {
  grid-column: 1 / -1;
}

.sform__hint {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  color: var(--secondary);
}

/* ---------- Markdown 渲染结果（与 App 共用同一份服务端 HTML） ---------- */

.md {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  word-break: break-word;
}

.md:empty::before {
  content: "预览区 —— 左侧输入 Markdown，这里实时显示效果";
  color: var(--muted);
  font-size: 13px;
}

.md > *:first-child {
  margin-top: 0;
}

.md h1,
.md h2,
.md h3,
.md h4 {
  margin: 22px 0 10px;
  font-weight: 650;
  line-height: 1.35;
}

.md h1 {
  font-size: 20px;
}

.md h2 {
  font-size: 17px;
}

.md h3 {
  font-size: 15px;
}

.md p {
  margin: 10px 0;
}

.md a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.md ul,
.md ol {
  margin: 10px 0;
  padding-left: 22px;
  list-style: revert;
}

.md li {
  margin: 4px 0;
}

.md blockquote {
  margin: 12px 0;
  padding: 8px 14px;
  border-left: 3px solid var(--primary-soft);
  background: var(--light);
  border-radius: 0 10px 10px 0;
  color: var(--secondary);
}

.md blockquote p {
  margin: 4px 0;
}

.md code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--input);
  font-family: Consolas, "Courier New", monospace;
  font-size: 12.5px;
  color: #b0574f;
}

.md pre {
  margin: 12px 0;
  padding: 14px 16px;
  border-radius: 12px;
  background: #1f2328;
  overflow-x: auto;
}

.md pre code {
  padding: 0;
  background: none;
  color: #e6eae7;
  font-size: 12.5px;
}

.md img {
  max-width: 100%;
  border-radius: 12px;
  margin: 10px 0;
  display: block;
}

.md hr {
  margin: 20px 0;
  border: none;
  border-top: 1px solid var(--divider);
}

.md table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 13px;
}

.md th,
.md td {
  border: 1px solid var(--divider);
  padding: 7px 11px;
  text-align: left;
}

.md th {
  background: var(--bg);
  font-weight: 600;
}

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  z-index: 100;
  transform: translate(-50%, 10px);
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(31, 35, 40, 0.94);
  color: #fff;
  font-size: 13px;
  box-shadow: var(--shadow-lift);
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
}

.toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- 响应式 ---------- */

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .side {
    position: static;
    height: auto;
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-right: none;
    border-bottom: 1px solid var(--divider);
  }

  .side__brand {
    padding: 0;
  }

  .side__nav {
    grid-auto-flow: column;
    gap: 2px;
  }

  .side__nav a {
    padding: 7px 10px;
    font-size: 13px;
  }

  .side__foot {
    margin: 0 0 0 auto;
    padding: 0;
    border: none;
  }

  .side__who {
    display: none;
  }

  .main {
    padding: 18px 16px 32px;
  }

  .trend__day {
    display: none;
  }

  /* 窄屏放不下双栏：源码与预览改成上下叠放 */
  .editor {
    padding: 12px;
  }

  .editor__panel {
    height: 94vh;
  }

  .editor__meta,
  .editor__body {
    grid-template-columns: 1fr;
  }

  .editor__body {
    grid-auto-rows: minmax(0, 1fr);
  }
}