:root {
  --bg: #0f1117;
  --bg-soft: #171a23;
  --card: #1c2030;
  --card-hover: #232839;
  --border: #2a3045;
  --text: #e8eaf2;
  --text-dim: #9aa3bf;
  --accent: #4f8cff;
  --accent-2: #7c5cff;
  --ok: #34c77b;
  --warn: #f5a623;
  --err: #ff5d5d;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ---- 布局 ---- */
.topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px;
  background: rgba(15,17,23,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.logo .badge {
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-size: 17px; color: #fff;
}
.topbar nav { display: flex; gap: 6px; margin-left: auto; }
.nav-btn {
  background: transparent; border: 1px solid transparent; color: var(--text-dim);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; font-size: 14px;
  transition: all .15s;
}
.nav-btn:hover { color: var(--text); background: var(--bg-soft); }
.nav-btn.active { color: var(--text); background: var(--card); border-color: var(--border); }
.user-area { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-dim); }

.container { max-width: 860px; margin: 0 auto; padding: 24px 16px 60px; }

/* ---- 卡片 ---- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card h2 { font-size: 17px; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }

/* ---- 输入区 ---- */
.textarea-wrap { position: relative; }
textarea {
  width: 100%; min-height: 130px; resize: vertical;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 14px;
  font-size: 15px;
  font-family: inherit;
  line-height: 1.7;
}
textarea:focus { outline: none; border-color: var(--accent); }
.char-count { position: absolute; right: 10px; bottom: 8px; font-size: 12px; color: var(--text-dim); }

.toolbar { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; align-items: center; }
.mode-toggle { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.mode-toggle button {
  background: transparent; color: var(--text-dim);
  border: none; padding: 8px 16px; cursor: pointer; font-size: 14px;
}
.mode-toggle button.active { background: var(--accent); color: #fff; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; border: none; border-radius: 8px;
  padding: 9px 20px; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: transform .1s, opacity .15s;
}
.btn:hover { opacity: .92; transform: translateY(-1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn-ghost {
  background: transparent; border: 1px solid var(--border); color: var(--text-dim);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-dim); }
.btn-danger { background: linear-gradient(135deg, #ff5d5d, #d64545); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; }

select, input[type="text"], input[type="password"] {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
  font-size: 14px;
  font-family: inherit;
}
select:focus, input:focus { outline: none; border-color: var(--accent); }
select { cursor: pointer; }

/* ---- 解读结果 ---- */
.result-area {
  display: none;
  margin-top: 20px;
}
.result-area.show { display: block; }
.result-area.loading::after {
  content: "正在解读…";
  display: block; text-align: center; color: var(--accent);
  padding: 12px; font-size: 14px;
}
.result-markdown { line-height: 1.8; word-break: break-word; }
.result-markdown h1, .result-markdown h2 {
  font-size: 16px; margin: 18px 0 8px;
  padding-left: 10px;
  border-left: 3px solid var(--accent);
}
.result-markdown h3 { font-size: 15px; margin: 14px 0 6px; }
.result-markdown p { margin: 6px 0; }
.result-markdown ul, .result-markdown ol { margin: 6px 0 6px 22px; }
.result-markdown li { margin: 4px 0; }
.result-markdown code {
  background: var(--bg-soft); padding: 2px 6px; border-radius: 5px;
  font-family: Consolas, monospace; font-size: 13px;
}
.result-markdown blockquote {
  border-left: 3px solid var(--border); padding-left: 12px;
  color: var(--text-dim); margin: 8px 0;
}
.result-actions { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

/* ---- 提示条 ---- */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 999; padding: 11px 22px; border-radius: 10px;
  font-size: 14px; color: #fff; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none; transition: opacity .25s;
  max-width: 90vw;
}
.toast.show { opacity: 1; }
.toast.ok { background: var(--ok); }
.toast.err { background: var(--err); }
.toast.info { background: var(--accent); }

/* ---- 历史列表 ---- */
.history-filters { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.history-filters input { flex: 1; min-width: 180px; }
.history-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 10px;
}
.history-item .src {
  color: var(--text);
  white-space: pre-wrap;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 14px;
}
.history-item .meta {
  display: flex; gap: 12px; align-items: center;
  color: var(--text-dim); font-size: 12px; margin-top: 8px; flex-wrap: wrap;
}
.tag {
  padding: 2px 8px; border-radius: 6px; font-size: 12px;
  background: var(--bg-soft); color: var(--text-dim);
}
.tag.compact { color: #7ec8ff; background: rgba(79,140,255,.12); }
.tag.full { color: #c9a6ff; background: rgba(124,92,255,.12); }
.tag.done { color: var(--ok); background: rgba(52,199,123,.12); }
.tag.pending { color: var(--warn); background: rgba(245,166,35,.12); }
.history-item .actions { display: flex; gap: 8px; margin-top: 10px; }
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 16px; align-items: center; color: var(--text-dim); font-size: 13px; }
.empty { text-align: center; color: var(--text-dim); padding: 40px 0; }
.empty .big { font-size: 40px; margin-bottom: 10px; }

/* ---- 登录注册 ---- */
.auth-wrap {
  max-width: 420px; margin: 60px auto;
}
.auth-card { padding: 32px; }
.auth-card h1 { font-size: 22px; margin-bottom: 4px; display: flex; align-items: center; gap: 10px; }
.auth-card .sub { color: var(--text-dim); font-size: 13px; margin-bottom: 24px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }
.form-group input { width: 100%; }
.auth-switch { text-align: center; margin-top: 16px; font-size: 14px; color: var(--text-dim); }

/* ---- 设置 ---- */
.setting-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 0; border-bottom: 1px solid var(--border);
  gap: 16px; flex-wrap: wrap;
}
.setting-row:last-child { border-bottom: none; }
.setting-row .label { font-size: 14px; }
.setting-row .desc { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
.quota-bar { height: 8px; background: var(--bg-soft); border-radius: 4px; overflow: hidden; margin-top: 8px; }
.quota-bar .fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 4px; transition: width .4s; }

/* ---- 管理员 ---- */
.admin-list { margin-top: 10px; }
.admin-user {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 8px; font-size: 14px;
}

/* ---- OCR ---- */
.ocr-drop {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
  color: var(--text-dim);
  cursor: pointer;
  transition: all .15s;
  margin-bottom: 12px;
}
.ocr-drop:hover, .ocr-drop.drag { border-color: var(--accent); color: var(--text); }
.ocr-drop .hint { font-size: 13px; margin-top: 6px; }
.ocr-status {
  display: none; align-items: center; gap: 10px;
  font-size: 13px; color: var(--accent);
  margin-bottom: 12px;
}
.ocr-status.show { display: flex; }
.spinner {
  width: 16px; height: 16px; border: 2px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display: none !important; }

/* 移动端 */
@media (max-width: 600px) {
  .topbar { padding: 8px 12px; gap: 8px; }
  .logo { font-size: 15px; }
  .nav-btn { padding: 6px 9px; font-size: 13px; }
  .container { padding: 16px 12px 40px; }
  .user-area .nick { display: none; }
}