:root {
  --brand: #F4A928;
  --brand-dark: #854F0B;
  --dark: #2a2c37;
  --darker: #232323;
  --layui-green: #009688;
  --light-gray: #efefef;
  --border: #e8e6e0;
  --text: #2c2c2a;
  --muted: #6b6b66;
  --hint: #888780;
  --bg: #faf9f6;
  --white: #ffffff;
  --radius: 8px;
  --radius-lg: 12px;
  --sidebar-w: 224px;
}

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

body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.app { display: flex; min-height: 100vh; }

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-w);
  background: var(--dark);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-logo {
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  padding: 24px 24px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-logo .dot {
  width: 10px; height: 10px; border-radius: 50%; background: var(--brand);
}
.sidebar-cat {
  color: #6b6d78;
  font-size: 11px;
  font-weight: 600;
  padding: 18px 24px 8px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
.sidebar-item {
  color: #c4c4be;
  font-size: 14px;
  padding: 10px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.15s;
  border-left: 3px solid transparent;
  padding-left: 21px;
}
.sidebar-item:hover { background: rgba(255,255,255,0.05); color: #fff; }
.sidebar-item.active {
  background: rgba(244,169,40,0.12);
  color: var(--brand);
  font-weight: 500;
  border-left-color: var(--brand);
}
.sidebar-item .icon { width: 18px; text-align: center; font-size: 14px; opacity: 0.8; }
.sidebar-item.active .icon { opacity: 1; }
.sidebar-item .tag-free {
  margin-left: auto;
  font-size: 10px;
  background: #3B6D11;
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 500;
}

/* ===== Main ===== */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  padding: 28px 40px;
  min-height: 100vh;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}
.greeting { font-size: 20px; font-weight: 600; }
.greeting .sub { font-size: 14px; font-weight: 400; color: var(--muted); }
.user-bar { display: flex; align-items: center; gap: 14px; }
.vip-badge {
  background: #FAEEDA;
  color: var(--brand-dark);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 4px;
}
.quota-text { font-size: 14px; color: var(--muted); }
.quota-text b { color: #0F6E56; }

/* ===== Quick Start Guide ===== */
.guide-banner {
  background: linear-gradient(135deg, #FAEEDA 0%, #FFF8EC 100%);
  border: 1px solid #FAC775;
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.guide-banner .guide-title {
  font-size: 15px; font-weight: 600; color: var(--brand-dark);
  white-space: nowrap;
}
.guide-steps {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  flex-wrap: wrap;
}
.guide-step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
}
.guide-step .num {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--brand); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600;
  flex-shrink: 0;
}
.guide-step-arrow { color: var(--brand); font-size: 14px; opacity: 0.5; }
.guide-cta {
  padding: 8px 18px; border-radius: 8px;
  background: var(--brand); color: #fff;
  font-size: 13px; font-weight: 500;
  cursor: pointer; border: none; white-space: nowrap;
}
.guide-cta:hover { opacity: 0.9; }

/* ===== Tool Page (上下布局) ===== */
.tool-page { display: flex; flex-direction: column; gap: 1px; background: var(--border); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); }
.tool-input-area { background: var(--white); padding: 24px; }
.tool-result-area { background: var(--white); padding: 24px; min-height: 280px; flex: 1; display: flex; flex-direction: column; }
.tool-result-area .paper { flex: 1; }

/* ===== Cards ===== */
.section-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--muted);
  margin: 24px 0 14px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s, box-shadow 0.15s;
}
.feature-card:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(244,169,40,0.1);
}
.feature-card .icon-box {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}
.feature-card .name { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.feature-card .desc { font-size: 13px; color: var(--hint); line-height: 1.7; }
.feature-card .tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  margin-top: 12px;
  font-weight: 500;
}
.tag-vip { background: #FAEEDA; color: var(--brand-dark); }
.tag-free { background: #EAF3DE; color: #3B6D11; }
.tag-new { background: #EEEDFE; color: #534AB7; }

/* ===== AI Write Page ===== */
.write-page { display: flex; gap: 1px; background: var(--border); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); }
.write-left { width: 340px; background: var(--white); padding: 24px; overflow-y: auto; }
.write-right { flex: 1; background: var(--white); padding: 24px; min-height: 560px; display: flex; flex-direction: column; }
.field-label { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 8px; }
.field-label .req { color: var(--brand); }
.doc-types { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.doc-type-chip {
  padding: 7px 14px; border-radius: 6px;
  font-size: 13px; border: 1px solid var(--border);
  background: var(--white); color: var(--muted);
  cursor: pointer; transition: all 0.15s;
}
.doc-type-chip:hover { border-color: var(--brand); }
.doc-type-chip.selected {
  background: #FAEEDA; border-color: #FAC775;
  color: var(--brand-dark); font-weight: 500;
}
.input-field {
  width: 100%; padding: 10px 14px;
  border-radius: 8px; border: 1px solid var(--border);
  font-size: 14px; margin-bottom: 16px;
  font-family: inherit; outline: none;
  transition: border-color 0.15s;
}
.input-field:focus { border-color: var(--brand); }
textarea.input-field { resize: vertical; min-height: 90px; line-height: 1.7; }
.select-row { display: flex; gap: 10px; margin-bottom: 16px; }
.select-field {
  flex: 1; padding: 9px 12px;
  border-radius: 8px; border: 1px solid var(--border);
  font-size: 14px; background: var(--white);
  font-family: inherit; outline: none;
  transition: border-color 0.15s;
}
.select-field:focus { border-color: var(--brand); }
.gen-btn {
  width: 100%; padding: 13px;
  border-radius: 10px; border: none;
  background: var(--brand); color: #fff;
  font-size: 15px; font-weight: 600;
  cursor: pointer; transition: opacity 0.15s;
  margin-top: 6px;
}
.gen-btn:hover { opacity: 0.9; }
.gen-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.field-hint { font-size: 12px; color: var(--hint); margin-top: 12px; text-align: center; }

.result-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.result-title { font-size: 17px; font-weight: 600; }
.result-actions { display: flex; gap: 8px; }
.action-btn {
  padding: 7px 14px; border-radius: 8px;
  font-size: 13px; border: 1px solid var(--border);
  background: var(--white); color: var(--muted);
  cursor: pointer; transition: all 0.15s;
}
.action-btn:hover { border-color: var(--brand); color: var(--text); }
.action-btn.primary { background: #E1F5EE; border-color: #5DCAA5; color: #0F6E56; }
.action-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.paper {
  background: #faf9f6;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 36px 40px;
  font-size: 15px;
  line-height: 2.1;
  flex: 1;
  overflow-y: auto;
  max-height: 64vh;
  white-space: pre-wrap;
  word-break: break-word;
}
.paper h4 { font-size: 20px; font-weight: 600; text-align: center; margin-bottom: 20px; }
.cursor-blink {
  display: inline-block;
  width: 2px; height: 20px;
  background: var(--brand);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.loading-placeholder {
  display: flex; align-items: center; justify-content: center;
  height: 100%; color: var(--hint); font-size: 15px;
}

/* ===== Inline guide on write page ===== */
.write-mini-guide {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #F0F7FF;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 12px;
  color: #185FA5;
}
.write-mini-guide .step-mini {
  display: flex; align-items: center; gap: 4px;
}
.write-mini-guide .step-mini .n {
  width: 16px; height: 16px; border-radius: 50%;
  background: #B5D4F4; color: #185FA5;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 600;
}
.write-mini-guide .arrow { color: #B5D4F4; }

/* ===== Step Write ===== */
.step-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.step-num {
  width: 32px; height: 32px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600; color: #fff;
  background: var(--border);
}
.step-num.active { background: var(--brand); }
.step-num.done { background: #0F6E56; }
.step-label { font-size: 14px; color: var(--muted); }
.step-label.active { color: var(--text); font-weight: 500; }
.step-arrow { color: var(--border); }

/* ===== Admin ===== */
.admin-bar {
  display: flex; align-items: center; gap: 12px; margin-bottom: 24px;
}
.admin-token-input {
  padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
  font-size: 14px; width: 240px; font-family: monospace;
}
.admin-nav { display: flex; gap: 6px; margin-bottom: 24px; flex-wrap: wrap; }
.admin-tab {
  padding: 8px 16px; border-radius: 8px; font-size: 14px;
  cursor: pointer; border: 1px solid var(--border); background: var(--white);
  color: var(--muted); transition: all 0.15s;
}
.admin-tab:hover { border-color: var(--brand); }
.admin-tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }

.prompt-list-item {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 16px 18px;
  margin-bottom: 10px; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  transition: border-color 0.15s;
}
.prompt-list-item:hover { border-color: var(--brand); }
.prompt-list-item .info .name { font-size: 15px; font-weight: 500; }
.prompt-list-item .info .meta { font-size: 13px; color: var(--hint); }
.prompt-list-item .actions { display: flex; gap: 8px; }
.badge-default { background: #E1F5EE; color: #0F6E56; font-size: 11px; padding: 2px 8px; border-radius: 3px; }
.badge-off { background: var(--light-gray); color: var(--hint); font-size: 11px; padding: 2px 8px; border-radius: 3px; }

.prompt-editor { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; }
.prompt-editor textarea { width: 100%; font-family: "SF Mono", Consolas, monospace; font-size: 13px; line-height: 1.7; }
.prompt-editor .label-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }

.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 22px;
  text-align: center;
}
.stat-card .num { font-size: 32px; font-weight: 700; color: var(--brand); }
.stat-card .label { font-size: 13px; color: var(--muted); margin-top: 6px; }

table.data-table { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--white); border-radius: var(--radius-lg); overflow: hidden; }
table.data-table th { background: var(--light-gray); padding: 12px 14px; text-align: left; font-weight: 600; color: var(--muted); font-size: 13px; }
table.data-table td { padding: 12px 14px; border-bottom: 1px solid var(--border); }

/* ===== Login ===== */
.login-screen {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; background: var(--bg);
}
.login-box {
  background: var(--white); border: 1px solid var(--border);
  border-radius: 20px; padding: 48px; max-width: 440px; width: 90%;
  text-align: center;
  box-shadow: 0 4px 24px rgba(0,0,0,0.04);
}
.login-box .logo-mark {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--brand); margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: #fff;
}
.login-box h2 { font-size: 22px; margin-bottom: 10px; }
.login-box p { color: var(--muted); font-size: 15px; margin-bottom: 28px; }
.login-btn {
  padding: 12px 28px; border-radius: 10px; border: none;
  background: var(--brand); color: #fff; font-size: 15px;
  font-weight: 500; cursor: pointer; margin: 4px;
  transition: opacity 0.15s;
}
.login-btn:hover { opacity: 0.9; }
.login-btn.secondary { background: var(--layui-green); }

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  background: var(--darker); color: #fff;
  padding: 12px 24px; border-radius: 10px;
  font-size: 14px; z-index: 9999;
  animation: toastIn 0.3s;
}
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 10px); } }
.toast.error { background: #A32D2D; }
.toast.success { background: #0F6E56; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .write-page { flex-direction: column; }
  .write-left { width: 100%; }
  .guide-banner { flex-direction: column; align-items: flex-start; gap: 12px; }
}
@media (max-width: 600px) {
  .sidebar { display: none; }
  .main { margin-left: 0; padding: 20px; }
  .card-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .guide-steps { gap: 8px; }
}