/* ============================================================
   金鱼二胡会员制系统 全局样式
   风格：米白宣纸底 + 深棕木质 + 暖金点缀，移动端优先
   ============================================================ */

:root {
  --bg: #f4ecdd;
  --bg-deep: #ece1cc;
  --surface: #fdfaf3;
  --surface-2: #f8f1e3;
  --ink: #2c211a;
  --ink-soft: #5a4838;
  --brown: #43301f;
  --brown-deep: #33241a;
  --line: #e4d6bd;
  --line-soft: #eee4d1;
  --gold: #b0833d;
  --gold-deep: #92672c;
  --gold-soft: #ecdcb8;
  --muted: #9a8a75;
  --clay: #a45642;
  --pine: #5f7d5a;
  --shadow: 0 2px 10px rgba(67, 48, 31, 0.07);
  --shadow-lg: 0 10px 32px rgba(67, 48, 31, 0.16);
  --radius: 14px;
  --radius-sm: 10px;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  background-image: radial-gradient(
      1200px 500px at 50% -120px,
      rgba(176, 131, 61, 0.1),
      transparent 60%
    ),
    radial-gradient(
      900px 400px at 100% 0%,
      rgba(67, 48, 31, 0.05),
      transparent 55%
    );
  background-attachment: fixed;
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
}

h1, h2, h3, .serif {
  font-family: var(--serif);
}

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

input, textarea, select {
  font-family: inherit;
  font-size: 16px;
}

a {
  color: var(--gold-deep);
  text-decoration: none;
}

/* ---------------- 布局 ---------------- */

.page {
  max-width: 520px;
  margin: 0 auto;
  padding: 0 16px 40px;
}

.page-admin {
  max-width: 720px;
}

.topbar {
  background: linear-gradient(160deg, var(--brown-deep), var(--brown));
  color: #f6ecda;
  padding: 18px 18px 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(176, 131, 61, 0.35);
}

.topbar-inner {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand .logo {
  font-size: 22px;
  line-height: 1;
}

.brand .title {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 2px;
  white-space: nowrap;
}

.brand .sub {
  font-size: 11px;
  color: var(--gold-soft);
  letter-spacing: 1px;
  margin-top: 1px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #f0e4cd;
  border: 1px solid rgba(236, 220, 184, 0.35);
  font-size: 15px;
  transition: background 0.15s;
}

.icon-btn:active {
  background: rgba(236, 220, 184, 0.15);
}

.section-title {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 22px 2px 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line), transparent);
}

/* ---------------- 卡片 ---------------- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.card + .card {
  margin-top: 12px;
}

/* ---------------- 按钮 ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 15px;
  letter-spacing: 1px;
  border: 1px solid transparent;
  transition: transform 0.08s, opacity 0.15s, background 0.15s;
  user-select: none;
  white-space: nowrap;
}

.btn:active:not([disabled]) {
  transform: scale(0.97);
}

.btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, #bd8c46, var(--gold-deep));
  color: #fff8ec;
  box-shadow: 0 3px 10px rgba(146, 103, 44, 0.3);
  font-weight: 600;
}

.btn-outline {
  background: transparent;
  border-color: #b89a6f;
  color: var(--brown);
}

.btn-ghost {
  background: var(--surface-2);
  border-color: var(--line);
  color: var(--ink-soft);
}

.btn-danger {
  background: linear-gradient(135deg, #b26550, var(--clay));
  color: #fdf2ec;
}

.btn-pine {
  background: linear-gradient(135deg, #7a9a73, var(--pine));
  color: #f0f6ec;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
}

.btn-flex {
  flex: 1;
}

/* 深色 topbar 上的描边按钮：默认 .btn-outline 文字为深棕，与深棕 topbar 同色导致隐形，
   在 topbar 内覆盖为米白文字保证可见 */
.topbar .btn-outline {
  color: #f6ecda;
  border-color: rgba(236, 220, 184, 0.65);
  background: rgba(255, 255, 255, 0.06);
}
.topbar .btn-outline:active {
  background: rgba(255, 255, 255, 0.16);
}

/* 返回主站辅助链接（页面底部，8 个会员端页面统一使用） */
.back-to-site {
  display: block;
  text-align: center;
  margin: 28px auto 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--muted);
}
.back-to-site:active {
  color: var(--gold-deep);
}

/* ---------------- 空状态 ---------------- */

.empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--muted);
}

.empty .big {
  font-size: 40px;
  margin-bottom: 10px;
  opacity: 0.7;
}

/* ---------------- 表单 ---------------- */

.form-item {
  margin-bottom: 14px;
}

.form-item label {
  display: block;
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 2px 6px;
  letter-spacing: 1px;
}

.form-item label .req {
  color: var(--clay);
  margin-left: 3px;
}

.form-item input,
.form-item textarea,
.form-item select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
}

.form-item textarea {
  resize: vertical;
  min-height: 64px;
}

.form-item input:focus,
.form-item textarea:focus,
.form-item select:focus {
  border-color: var(--gold);
}

.form-item .hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
  margin-left: 2px;
}

.form-item .checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
}

.form-item .checkbox-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--gold-deep);
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.form-error {
  color: var(--clay);
  font-size: 13px;
  min-height: 18px;
  text-align: center;
  margin-bottom: 4px;
}

/* ---------------- 搜索 ---------------- */

.search {
  position: relative;
  margin-bottom: 14px;
}

.search .icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 15px;
  pointer-events: none;
}

.search input {
  width: 100%;
  padding: 12px 14px 12px 38px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  outline: none;
  box-shadow: var(--shadow);
  transition: border-color 0.15s;
}

.search input:focus {
  border-color: var(--gold);
}

/* ---------------- 列表行 ---------------- */

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.row:last-child {
  border-bottom: none;
}

.row .meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 3px;
}

.row-title {
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
}

.row-sub {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 2px;
}

/* ---------------- 标签 / 状态 ---------------- */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 1px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink-soft);
}

.tag.gold {
  background: var(--gold-soft);
  color: var(--gold-deep);
  border-color: var(--gold-soft);
}

.tag.pine {
  background: #e4efdf;
  color: var(--pine);
  border-color: #d3e4cb;
}

.tag.clay {
  background: #f4e3df;
  color: var(--clay);
  border-color: #ecd6cf;
}

.tag.muted {
  background: var(--bg-deep);
  color: var(--muted);
}

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

.toast {
  position: fixed;
  left: 50%;
  bottom: 80px;
  transform: translateX(-50%) translateY(20px);
  background: rgba(51, 36, 26, 0.92);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 1000;
  max-width: 80%;
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.error {
  background: rgba(164, 86, 66, 0.95);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(33, 24, 16, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  transition: opacity 0.15s;
  padding: 16px;
}

.overlay.show {
  opacity: 1;
}

.sheet {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  width: 100%;
  max-width: 480px;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.sheet-head h3 {
  margin: 0;
  font-size: 17px;
  letter-spacing: 1px;
}

.sheet-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-deep);
  color: var(--ink-soft);
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.confirm-body {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 14px;
  white-space: pre-wrap;
  line-height: 1.6;
}

/* ---------------- 后台 ---------------- */

.admin-layout {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px 40px;
}

.admin-nav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 8px 0 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 14px;
  -webkit-overflow-scrolling: touch;
}

.admin-nav a {
  flex-shrink: 0;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  white-space: nowrap;
}

.admin-nav a.active {
  background: var(--brown);
  color: #f6ecda;
  border-color: var(--brown);
}

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

.table th,
.table td {
  padding: 10px 8px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
}

.table th {
  font-size: 12px;
  color: var(--muted);
  font-weight: normal;
  letter-spacing: 1px;
}

/* ---------------- 特定区块 ---------------- */

/* 会员卡 */
.member-card {
  background: linear-gradient(135deg, #43301f, #6b4628);
  color: #f6ecda;
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-lg);
}

.member-card .name {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: 2px;
}

.member-card .expire {
  font-size: 13px;
  color: var(--gold-soft);
  margin-top: 4px;
}

.member-card .status-row {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

/* 首页 hero */
.hero {
  text-align: center;
  padding: 28px 12px 20px;
}

.hero .logo {
  font-size: 52px;
}

.hero h1 {
  font-size: 26px;
  letter-spacing: 3px;
  margin: 8px 0 6px;
}

.hero .subtitle {
  font-size: 13px;
  color: var(--ink-soft);
  letter-spacing: 1px;
  margin-bottom: 22px;
}

.hero .price {
  font-family: var(--serif);
  font-size: 36px;
  color: var(--gold-deep);
  font-weight: 600;
}

.hero .price small {
  font-size: 14px;
  color: var(--muted);
  font-weight: normal;
  margin-left: 4px;
}

/* 权益列表 */
.benefits {
  margin-top: 14px;
}

.benefit {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.benefit:last-child {
  border-bottom: none;
}

.benefit .icon {
  font-size: 22px;
  flex-shrink: 0;
}

.benefit .text h4 {
  margin: 0 0 4px;
  font-size: 15px;
  font-family: var(--serif);
  letter-spacing: 1px;
}

.benefit .text p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

/* 课程卡片 */
.course-card {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.course-card:last-child {
  border-bottom: none;
}

.course-card img.cover {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-deep);
}

.course-card .info {
  flex: 1;
  min-width: 0;
}

.course-card .info h4 {
  margin: 0 0 4px;
  font-size: 15px;
  font-family: var(--serif);
}

.course-card .info p {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-card .info .time {
  font-size: 12px;
  color: var(--gold-deep);
  margin-top: 4px;
}

/* 群入口卡片 */
.group-card {
  text-align: center;
  padding: 24px 16px;
}

.group-card img.qr {
  width: 220px;
  height: 220px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  margin: 8px auto 12px;
  display: block;
  background: #fff;
}

/* 统计卡 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 12px 0;
}

.stat-box {
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 14px 12px;
  text-align: center;
}

.stat-box .num {
  font-family: var(--serif);
  font-size: 24px;
  color: var(--ink);
  font-weight: 600;
}

.stat-box .num.hl {
  color: var(--gold-deep);
}

.stat-box .lbl {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

/* 功能入口 v2：3 列、大 SVG 图标、更大文字 */
.stat-grid-v2 {
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat-box-v2 {
  padding: 18px 8px 14px;
  border-radius: 14px;
  transition: transform .15s, box-shadow .15s;
  -webkit-tap-highlight-color: transparent;
}
.stat-box-v2:active {
  transform: scale(0.95);
}
.stat-box-v2 svg {
  width: 32px;
  height: 32px;
  color: var(--gold-deep);
  display: block;
  margin: 0 auto 8px;
}
.stat-box-v2 .lbl {
  font-size: 13px;
  color: var(--ink-soft);
  margin-top: 0;
  font-weight: 500;
}

/* 营销横幅 */
.banner-cta {
  background: linear-gradient(135deg, #d6a04a, var(--gold-deep));
  color: #fff8ec;
  padding: 14px 16px;
  border-radius: var(--radius);
  margin: 12px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  box-shadow: 0 3px 10px rgba(146, 103, 44, 0.3);
}

.banner-cta .text {
  flex: 1;
}

.banner-cta .text h4 {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: 1px;
}

.banner-cta .text p {
  margin: 2px 0 0;
  font-size: 12px;
  opacity: 0.92;
}

.banner-cta .arrow {
  font-size: 20px;
}

/* 图片上传 */
.upload-area {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.upload-area img.preview {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--bg-deep);
}

.upload-area .placeholder {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--line);
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 22px;
}

/* 加载态 */
.loading {
  text-align: center;
  padding: 30px;
  color: var(--muted);
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--line);
  border-top-color: var(--gold-deep);
  border-radius: 50%;
  margin: 0 auto 8px;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 响应式：大屏居中 */
@media (min-width: 768px) {
  .page {
    padding-top: 4px;
  }
}

/* 工具类 */
.text-muted { color: var(--muted); }
.text-sm { font-size: 12px; }
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.flex { display: flex; }
.gap-2 { gap: 8px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }