/* ============================================================
   降AIGC平台 - 全局样式（纯原生CSS，无三方库）
   ============================================================ */

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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff4ff;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --warn: #d97706;
  --warn-bg: #fffbeb;
  --error: #dc2626;
  --error-bg: #fef2f2;
  --text: #1f2937;
  --text-2: #6b7280;
  --border: #e5e7eb;
  --bg: #f5f7fa;
  --white: #fff;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12);
}

html, body { height: 100%; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-size: 12px; color: #475569; }

.hidden { display: none !important; }

.container { max-width: 1400px; margin: 0 auto; padding: 0 16px; }

/* ============ 顶部导航 ============ */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow);
}
.header-inner { display: flex; align-items: center; height: 60px; gap: 24px; }
.logo { font-size: 18px; font-weight: 700; color: var(--text); }
.logo:hover { color: var(--primary); }
.main-nav { display: flex; gap: 4px; flex: 1; }
.main-nav a {
  padding: 8px 14px; border-radius: 8px; color: var(--text-2); font-weight: 500;
}
.main-nav a:hover { background: var(--primary-light); color: var(--primary); }
.main-nav a.active { background: var(--primary-light); color: var(--primary); }
.main-nav a.admin-link { color: var(--warn); }
.header-user { display: flex; align-items: center; gap: 14px; font-size: 14px; }
.header-user .link-user { color: var(--text); font-weight: 500; }
.header-user .link-logout { color: var(--text-2); }
.quota-badge {
  background: var(--primary-light); color: var(--primary);
  padding: 4px 12px; border-radius: 20px; font-size: 13px; font-weight: 600;
}

/* 顶部导航：移动端适配 */
@media (max-width: 900px) {
  .header-inner { flex-wrap: wrap; height: auto; padding: 10px 0; gap: 10px 16px; }
  .main-nav { order: 3; flex: 1 1 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .main-nav a { white-space: nowrap; padding: 6px 12px; }
  .header-user { margin-left: auto; gap: 10px; }
}

.main { padding: 24px 16px 48px; min-height: calc(100vh - 140px); }

.site-footer {
  border-top: 1px solid var(--border); background: var(--white);
  color: var(--text-2); text-align: center; padding: 18px 0; font-size: 13px;
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 9px 20px; border-radius: 8px; border: 1px solid transparent;
  font-size: 14px; font-weight: 500; cursor: pointer; transition: all .15s;
  background: var(--white); color: var(--text);
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); color: #fff; }
.btn-outline { border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-block { width: 100%; }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-link {
  background: none; border: none; color: var(--primary); cursor: pointer;
  font-size: 13px; padding: 0 6px;
}
.btn-link:hover { text-decoration: underline; }
.btn-link-danger { color: var(--error); }

/* ============ 卡片 ============ */
.card {
  background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow);
  margin-bottom: 20px; overflow: hidden;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.card-head h2 { font-size: 16px; font-weight: 600; }
.card-body { padding: 20px; }
.link-more { font-size: 13px; }
.char-limit { color: var(--text-2); font-size: 12px; margin-left: 8px; }

/* ============ 表格 ============ */
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th, .table td {
  padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.table thead th { background: #fafbfc; color: var(--text-2); font-weight: 600; white-space: nowrap; }
.table tbody tr:hover { background: #fafbfc; }
.td-preview { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-2); }
.td-mono { font-family: Consolas, Menlo, monospace; font-size: 12px; }
.td-actions { white-space: nowrap; }

/* 卡片头部右侧按钮组与模型拖动排序 */
.head-actions { display: flex; align-items: center; gap: 10px; }
.head-actions .btn { margin: 0; }
.sort-hint { font-size: 12.5px; color: var(--warn); }
.table-tip { font-size: 12.5px; color: var(--text-2); margin-bottom: 10px; }
.th-drag { width: 52px; }
.td-drag { width: 52px; text-align: center; }
.drag-handle {
  display: inline-block; cursor: grab; user-select: none; -webkit-user-select: none;
  color: var(--text-2); font-size: 16px; line-height: 1; padding: 2px 4px;
}
.drag-handle:active { cursor: grabbing; }
.table tbody tr.dragging {
  opacity: .55; background: #eef2ff; box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
@media (max-width: 900px) {
  .head-actions { flex-wrap: wrap; }
}

/* ============ 徽章 ============ */
.badge {
  display: inline-block; padding: 2px 10px; border-radius: 20px;
  font-size: 12px; font-weight: 500;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-error { background: var(--error-bg); color: var(--error); }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-admin { background: #eef2ff; color: #4338ca; }
.badge-user { background: var(--primary-light); color: var(--primary); }

/* ============ 提示条 ============ */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-error { background: var(--error-bg); color: var(--error); border: 1px solid #fecaca; }
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid #bbf7d0; }
.alert-warning { background: var(--warn-bg); color: var(--warn); border: 1px solid #fde68a; }
.alert-info { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }

/* ============ 表单 ============ */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 13.5px; }
.form-group input[type=text], .form-group input[type=password], .form-group input[type=number],
.form-group select, .form-group textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; font-family: inherit; outline: none;
  transition: border-color .15s; background: var(--white); color: var(--text);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-group textarea { resize: vertical; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-switch label { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.form-switch input { width: 16px; height: 16px; accent-color: var(--primary); }
.form-inline { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; }
.form-inline .form-group { flex: 1; min-width: 180px; margin-bottom: 0; }
.form-foot { margin-top: 16px; }

.char-count { color: var(--primary); font-weight: 600; font-size: 12px; margin-left: 6px; }

/* ============ 登录注册 ============ */
.auth-wrap { display: flex; justify-content: center; padding: 60px 16px; }
.auth-card {
  width: 100%; max-width: 420px; background: var(--white); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 36px 36px 30px;
}
.auth-card h2 { font-size: 22px; margin-bottom: 4px; }
.auth-sub { color: var(--text-2); font-size: 13px; margin-bottom: 24px; }
.auth-tip { margin-top: 16px; text-align: center; color: var(--text-2); font-size: 13px; }

/* ============ 首页 ============ */
.hero {
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 60%, #3b82f6 100%);
  color: #fff; text-align: center; padding: 72px 16px; border-radius: var(--radius);
  margin: 8px 0 28px;
}
.hero h1 { font-size: 34px; margin-bottom: 12px; }
.hero-desc { font-size: 16px; opacity: .92; max-width: 560px; margin: 0 auto 28px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; }
.hero-actions .btn-outline { border-color: rgba(255,255,255,.6); color: #fff; background: rgba(255,255,255,.12); }
.hero-actions .btn-outline:hover { background: rgba(255,255,255,.22); }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.feature-card {
  background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 24px;
}
.feature-card h3 { font-size: 16px; margin-bottom: 8px; color: var(--primary); }
.feature-card p { color: var(--text-2); font-size: 13.5px; }

/* ============ 工具页 ============ */
.tool-wrap { max-width: 1400px; margin: 0 auto; }
.option-row { display: flex; flex-direction: column; gap: 14px; margin-bottom: 18px; }
.option-group { min-width: 0; }
.option-label { display: block; font-size: 13.5px; font-weight: 500; margin-bottom: 8px; }
.option-label-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.option-label-row .option-label { margin-bottom: 0; }
.option-scroll {
  display: flex; gap: 10px; overflow-x: auto; padding-bottom: 6px;
  -webkit-overflow-scrolling: touch; scrollbar-width: thin;
}
.option-scroll::-webkit-scrollbar { height: 6px; }
.option-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
.option-scroll::-webkit-scrollbar-track { background: transparent; }
/* 圆形单选卡片（圆圈相对文本垂直居中） */
.radio-chip {
  display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0;
  padding: 9px 13px; border: 1px solid var(--border); border-radius: 20px;
  cursor: pointer; transition: all .15s; background: var(--white);
}
.radio-chip:hover { border-color: var(--primary); }
.radio-chip:has(input:checked) {
  border-color: var(--primary); background: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(37,99,235,.10);
}
.radio-chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip-dot {
  width: 16px; height: 16px; flex-shrink: 0; margin-top: 0;
  border: 2px solid #cbd5e1; border-radius: 50%; transition: all .15s;
  box-sizing: border-box; position: relative;
}
.radio-chip:has(input:checked) .chip-dot { border-color: var(--primary); }
.radio-chip:has(input:checked) .chip-dot::after {
  content: ''; position: absolute; inset: 2px; border-radius: 50%; background: var(--primary);
}
.chip-text { font-size: 13.5px; line-height: 1.5; display: flex; flex-direction: column; }
.chip-text em { font-style: normal; color: var(--text-2); font-size: 12px; }
/* 输入 / 输出：电脑左右两栏，移动端上下堆叠 */
.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .tool-grid { grid-template-columns: 1fr; } }
.tool-col { min-width: 0; }
/* 加大输入/输出框高度，但不超过屏幕（移动端保持原高度不变） */
.tool-col textarea { min-height: 440px; max-height: calc(100vh - 260px); }
@media (max-width: 900px) {
  .tool-col textarea { min-height: auto; max-height: none; }
}
/* 锚点滚动偏移（避开吸顶导航） */
.anchor-target { scroll-margin-top: 76px; }
.result-head { display: flex; align-items: baseline; gap: 4px; margin-bottom: 6px; font-weight: 500; font-size: 13.5px; }
.tool-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.detect-box { display: flex; gap: 8px; margin-left: auto; }
@media (max-width: 600px) {
  .radio-chip { padding: 8px 11px; }
  .chip-text em { display: none; }
}
.detect-box select {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px;
}
.detect-result { margin-top: 16px; padding: 14px 16px; border-radius: 8px; font-size: 14px; }
.detect-result.ok { background: var(--success-bg); color: var(--success); border: 1px solid #bbf7d0; }
.detect-result.warn { background: var(--warn-bg); color: var(--warn); border: 1px solid #fde68a; }
.detect-result.err { background: var(--error-bg); color: var(--error); border: 1px solid #fecaca; }

.loading-box { margin-top: 12px; text-align: center; color: var(--text-2); font-size: 14px; }
.spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid var(--primary-light); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 0.8s linear infinite;
  vertical-align: middle; margin-right: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ 统计 ============ */
.stat-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px;
  margin-bottom: 20px;
}
.stat-box {
  background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px 16px; text-align: center;
}
.stat-num { font-size: 24px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 12.5px; color: var(--text-2); margin-top: 4px; }

.info-table { width: 100%; }
.info-table td { padding: 9px 8px; border-bottom: 1px solid var(--border); font-size: 13.5px; }
.info-table td:first-child { color: var(--text-2); width: 120px; }

.center-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .center-grid { grid-template-columns: 1fr; } }
.center-actions { display: flex; gap: 10px; margin-top: 14px; }

/* ============ 充值 ============ */
.recharge-info {
  background: var(--primary-light); border-radius: 8px; padding: 12px 16px;
  margin-bottom: 20px; font-size: 14px;
}
.amount-presets { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.preset-btn {
  min-width: 96px; padding: 10px 8px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--white); cursor: pointer; font-size: 14px; transition: all .15s;
}
.preset-btn:hover, .preset-btn.active { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.preset-btn small { display: block; font-size: 11px; color: var(--text-2); margin-top: 2px; }
.pay-type-box { display: flex; gap: 12px; }
.radio-card {
  flex: 1; border: 1px solid var(--border); border-radius: 8px; padding: 14px;
  cursor: pointer; display: block; transition: all .15s;
}
.radio-card:hover { border-color: var(--primary); }
.radio-card:has(input:checked) { border-color: var(--primary); background: var(--primary-light); }
.radio-card input { margin-right: 8px; accent-color: var(--primary); }
.radio-card small { display: block; color: var(--text-2); font-size: 12px; margin-top: 4px; }
.recharge-preview {
  background: #f8fafc; border: 1px dashed var(--border); border-radius: 8px;
  padding: 12px 16px; margin-bottom: 16px; font-size: 14px;
}

/* ============ 分页 ============ */
.pagination { display: flex; gap: 6px; margin-top: 16px; flex-wrap: wrap; }
.pagination a {
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px;
  color: var(--text-2); font-size: 13px;
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ============ 弹窗 ============ */
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow-lg);
  width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.modal-head h3 { font-size: 16px; }
.modal-close { border: none; background: none; font-size: 22px; color: var(--text-2); cursor: pointer; line-height: 1; }
.modal form { padding: 20px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.modal-lg { max-width: 780px; }

/* ============ 提示词大厅 ============ */
.hall-body { padding: 16px 20px 20px; }
.hall-search { display: flex; gap: 10px; margin-bottom: 14px; }
.hall-search input {
  flex: 1; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; outline: none; font-family: inherit;
}
.hall-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.hall-list { display: flex; flex-direction: column; gap: 12px; max-height: 55vh; overflow-y: auto; }
.hall-item {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px;
  background: #fafbfc;
}
.hall-item-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 6px; }
.hall-name { font-weight: 600; font-size: 14.5px; }
.hall-author { font-size: 12px; color: var(--text-2); background: var(--primary-light); color: var(--primary); padding: 2px 10px; border-radius: 20px; flex-shrink: 0; }
.hall-desc { font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.hall-preview {
  font-size: 12.5px; color: var(--text-2); background: var(--white);
  border: 1px dashed var(--border); border-radius: 6px; padding: 8px 10px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 10px; white-space: pre-wrap;
}
.hall-actions { display: flex; justify-content: flex-end; gap: 8px; }

/* ============ 管理后台 ============ */
.admin-wrap { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 220px; background: #111827; color: #d1d5db; flex-shrink: 0;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.sidebar-brand { padding: 22px 20px; border-bottom: 1px solid #1f2937; }
.sidebar-brand a { color: #fff; font-size: 16px; font-weight: 700; display: block; }
.sidebar-brand span { font-size: 12px; color: #9ca3af; }
.sidebar-nav { flex: 1; padding: 12px 10px; display: flex; flex-direction: column; gap: 2px; }
.sidebar-nav a {
  display: block; padding: 10px 14px; border-radius: 8px; color: #d1d5db; font-size: 14px;
}
.sidebar-nav a:hover { background: #1f2937; color: #fff; }
.sidebar-nav a.active { background: var(--primary); color: #fff; }
.sidebar-user {
  padding: 16px 20px; border-top: 1px solid #1f2937; font-size: 13px;
  display: flex; flex-direction: column; gap: 6px;
}
.sidebar-user span { color: #fff; font-weight: 600; }
.sidebar-user a { color: #9ca3af; }
.sidebar-user a:hover { color: #fff; }

.admin-main { flex: 1; min-width: 0; background: var(--bg); }
.admin-topbar {
  background: var(--white); border-bottom: 1px solid var(--border);
  padding: 14px 24px;
}
.admin-topbar h1 { font-size: 18px; font-weight: 600; }
.admin-content { padding: 24px; }

@media (max-width: 800px) {
  .admin-wrap { flex-direction: column; }
  .admin-sidebar { width: 100%; height: auto; position: static; }
  .sidebar-nav { flex-direction: row; flex-wrap: wrap; }
  .admin-content { padding: 14px; }
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

.filter-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filter-row > a {
  padding: 5px 14px; border-radius: 20px; color: var(--text-2); font-size: 13px;
  border: 1px solid var(--border);
}
.filter-row > a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.search-form { display: flex; gap: 8px; margin-left: auto; }
.search-form input {
  padding: 7px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px;
  outline: none; width: 190px;
}
.search-form input:focus { border-color: var(--primary); }

.detector-form {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; margin-bottom: 16px; background: #fafbfc;
}
.detector-title { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.detector-title h3 { font-size: 15px; }

/* ============ Toast ============ */
#toastWrap { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  padding: 10px 20px; border-radius: 8px; color: #fff; font-size: 14px;
  box-shadow: var(--shadow-lg); animation: toastIn .25s ease;
}
.toast-ok { background: var(--success); }
.toast-err { background: var(--error); }
.toast-warn { background: var(--warn); }
@keyframes toastIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }

/* ============ 其他 ============ */
.empty-page { text-align: center; padding: 100px 16px; }
.empty-page h1 { font-size: 60px; color: var(--primary); }
.empty-page p { color: var(--text-2); margin: 12px 0 24px; }
.empty-tip { color: var(--text-2); padding: 20px 0; text-align: center; }