/* 墨读书城 —— 安静的私人图书馆：深夜蓝 + 米白 + 衬线标题 */
:root {
  --bg: #071a2b;
  --bg-deep: #051423;
  --panel: #0b2338;
  --panel-soft: #0d2740;
  --line: rgba(232, 226, 213, 0.14);
  --line-soft: rgba(232, 226, 213, 0.08);
  --ink: #e8e2d5;
  --ink-dim: #a8a294;
  --ink-faint: #6f6a5e;
  --accent: #c9a86a;
  --accent-dim: rgba(201, 168, 106, 0.35);
  --danger: #c67b6e;
  --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, .serif { font-family: var(--serif); font-weight: 600; letter-spacing: 0.04em; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 18px;
  padding: 0 28px; height: 62px;
  background: rgba(5, 20, 35, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line-soft);
}
.brand { font-family: var(--serif); font-size: 20px; letter-spacing: 0.14em; color: var(--ink); cursor: pointer; white-space: nowrap; }
.brand small { font-size: 11px; color: var(--ink-faint); letter-spacing: 0.2em; margin-left: 8px; }
.topnav { display: flex; gap: 4px; margin-left: 8px; }
.topnav a {
  color: var(--ink-dim); padding: 6px 12px; border-radius: 3px; font-size: 14px;
  text-decoration: none;
}
.topnav a:hover { color: var(--ink); background: rgba(232, 226, 213, 0.06); }
.topnav a.active { color: var(--accent); }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 14px; position: relative; }

.icon-button {
  background: none; border: 1px solid transparent; color: var(--ink-dim);
  width: 36px; height: 36px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  position: relative;
}
.icon-button:hover { color: var(--ink); border-color: var(--line); }
.badge {
  position: absolute; top: 2px; right: 0;
  min-width: 16px; height: 16px; padding: 0 4px;
  background: var(--danger); color: #fff;
  font-size: 10px; line-height: 16px; border-radius: 8px; text-align: center;
}
.avatar-chip { display: flex; align-items: center; gap: 8px; cursor: pointer; background: none; border: none; color: var(--ink-dim); padding: 4px; }
.avatar-chip:hover { color: var(--ink); }
.avatar, .avatar-placeholder {
  width: 32px; height: 32px; border-radius: 50%; object-fit: cover;
  border: 1px solid var(--line); flex: none;
}
.avatar-placeholder {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--panel-soft); color: var(--accent); font-family: var(--serif); font-size: 14px;
}
.avatar.large, .avatar-placeholder.large { width: 72px; height: 72px; font-size: 28px; }

/* ---------- 通知面板 ---------- */
.notif-panel {
  position: absolute; top: 52px; right: 0; width: 340px; max-height: 420px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
  display: flex; flex-direction: column; overflow: hidden; z-index: 50;
}
.notif-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--line-soft); }
.notif-head strong { font-family: var(--serif); letter-spacing: 0.1em; }
.notif-list { overflow-y: auto; }
.notif-item { padding: 10px 16px; border-bottom: 1px solid var(--line-soft); cursor: pointer; font-size: 13.5px; }
.notif-item:hover { background: rgba(232, 226, 213, 0.04); }
.notif-item.unread { border-left: 2px solid var(--accent); }
.notif-item .time { color: var(--ink-faint); font-size: 12px; margin-top: 2px; }
.notif-empty { padding: 32px; text-align: center; color: var(--ink-faint); }

/* ---------- 布局 ---------- */
.page { max-width: 1080px; margin: 0 auto; padding: 32px 28px 80px; }
.page-title { font-size: 24px; margin: 0 0 4px; }
.page-sub { color: var(--ink-faint); font-size: 13px; margin: 0 0 28px; letter-spacing: 0.08em; }
.section { border-top: 1px solid var(--line-soft); padding-top: 28px; margin-top: 36px; }
.section > h2 { font-size: 18px; margin: 0 0 16px; }

/* ---------- 登录 / 注册 ---------- */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card { width: 380px; max-width: 100%; }
.auth-card h1 { font-size: 30px; text-align: center; margin: 0 0 6px; letter-spacing: 0.2em; }
.auth-card .motto { text-align: center; color: var(--ink-faint); font-size: 13px; letter-spacing: 0.16em; margin: 0 0 32px; }
.auth-tabs { display: flex; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.auth-tabs button {
  flex: 1; background: none; border: none; color: var(--ink-dim);
  padding: 10px; font-size: 15px; font-family: var(--serif); letter-spacing: 0.2em;
  border-bottom: 1px solid transparent; margin-bottom: -1px;
}
.auth-tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- 表单 ---------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; color: var(--ink-dim); margin-bottom: 6px; letter-spacing: 0.06em; }
.field input[type="text"], .field input[type="password"], .field input[type="file"], .field textarea, .field select {
  width: 100%; padding: 9px 12px;
  background: var(--bg-deep); color: var(--ink);
  border: 1px solid var(--line); border-radius: 4px; font-size: 14px;
  outline: none;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent-dim); }
.field textarea { resize: vertical; min-height: 90px; }
.field .hint { font-size: 12px; color: var(--ink-faint); margin-top: 4px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 20px; border-radius: 4px; font-size: 14px; letter-spacing: 0.08em;
  border: 1px solid var(--line); background: none; color: var(--ink);
  transition: border-color 0.15s, background 0.15s;
}
.btn:hover { border-color: var(--accent-dim); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #071a2b; font-weight: 600; }
.btn.primary:hover { background: #d8ba80; }
.btn.danger { color: var(--danger); border-color: rgba(198, 123, 110, 0.4); }
.btn.danger:hover { background: rgba(198, 123, 110, 0.12); }
.btn.small { padding: 5px 12px; font-size: 13px; }
.btn.block { width: 100%; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.form-error { color: var(--danger); font-size: 13px; margin: 4px 0 12px; min-height: 1em; }
.form-ok { color: #8fbf8f; font-size: 13px; margin: 4px 0 12px; }

/* ---------- 首页工具行 ---------- */
.store-tools { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.search-input {
  width: 100%; padding: 11px 16px; font-size: 15px;
  background: var(--bg-deep); color: var(--ink);
  border: 1px solid var(--line); border-radius: 4px; outline: none;
}
.search-input:focus { border-color: var(--accent-dim); }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  padding: 5px 14px; border-radius: 999px; font-size: 13px;
  border: 1px solid var(--line); background: none; color: var(--ink-dim);
}
.chip:hover { color: var(--ink); }
.chip.active { border-color: var(--accent); color: var(--accent); }

/* ---------- 书籍网格 ---------- */
.book-grid {
  display: grid; gap: 24px 20px;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}
.book-card { cursor: pointer; display: flex; flex-direction: column; }
.book-cover {
  position: relative; aspect-ratio: 3 / 4; border: 1px solid var(--line-soft);
  border-radius: 3px; overflow: hidden; background: var(--panel);
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.15s;
}
.book-card:hover .book-cover { border-color: var(--accent-dim); }
.book-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.book-cover .cover-placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; padding: 12px; text-align: center; height: 100%;
}
.cover-placeholder .spine {
  width: 44px; height: 60px; border: 1px solid var(--accent-dim); border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); color: var(--accent); font-size: 20px;
}
.cover-placeholder .fmt { font-size: 11px; color: var(--ink-faint); letter-spacing: 0.2em; }
.book-meta { padding-top: 10px; }
.book-meta .title {
  font-family: var(--serif); font-size: 15px; color: var(--ink);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.book-meta .author { font-size: 12.5px; color: var(--ink-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.book-meta .sub { display: flex; align-items: center; gap: 6px; margin-top: 5px; font-size: 12px; color: var(--ink-faint); }
.book-meta .sub .avatar, .book-meta .sub .avatar-placeholder { width: 18px; height: 18px; font-size: 10px; }
.rating-stars { color: var(--accent); letter-spacing: 1px; }
.rating-none { color: var(--ink-faint); }
.empty-state { padding: 72px 0; text-align: center; color: var(--ink-faint); font-family: var(--serif); letter-spacing: 0.12em; }

/* ---------- 详情 ---------- */
.detail-head { display: flex; gap: 32px; align-items: flex-start; }
.detail-cover { width: 200px; flex: none; }
.detail-cover .book-cover { aspect-ratio: 3 / 4; }
.detail-info { flex: 1; min-width: 0; }
.detail-info h1 { font-size: 26px; margin: 0 0 8px; }
.detail-info .author-line { color: var(--ink-dim); margin: 0 0 16px; }
.fact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px 24px; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); padding: 14px 0; margin-bottom: 20px; }
.fact-grid .fact .k { font-size: 12px; color: var(--ink-faint); letter-spacing: 0.1em; }
.fact-grid .fact .v { font-size: 14px; }
.rating-big { display: flex; align-items: baseline; gap: 10px; margin-bottom: 18px; }
.rating-big .num { font-family: var(--serif); font-size: 30px; color: var(--accent); }

/* ---------- 评价 ---------- */
.review { border-top: 1px solid var(--line-soft); padding: 16px 0; display: flex; gap: 12px; }
.review .avatar, .review .avatar-placeholder { width: 34px; height: 34px; }
.review-body { flex: 1; min-width: 0; }
.review-head { display: flex; align-items: center; gap: 10px; font-size: 13px; flex-wrap: wrap; }
.review-head .name { color: var(--ink); }
.review-head .time { color: var(--ink-faint); font-size: 12px; margin-left: auto; }
.review-comment { margin-top: 4px; font-size: 14px; white-space: pre-wrap; word-break: break-word; }
.star-picker { display: inline-flex; gap: 4px; }
.star-picker button { background: none; border: none; font-size: 24px; color: var(--ink-faint); padding: 0 2px; line-height: 1; }
.star-picker button.on { color: var(--accent); }

/* ---------- 阅读器下载 ---------- */
.reader-download { border: 1px solid var(--line); border-radius: 6px; padding: 24px 28px; display: flex; gap: 24px; align-items: center; flex-wrap: wrap; background: var(--panel); }
.reader-download .rd-text { flex: 1; min-width: 220px; }
.reader-download h2 { margin: 0 0 6px; font-size: 18px; }
.reader-download p { margin: 0; color: var(--ink-dim); font-size: 13.5px; }
.reader-download .rd-links { display: flex; flex-direction: column; gap: 8px; font-size: 14px; }

/* ---------- 账户 ---------- */
.account-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.account-avatar-row { display: flex; align-items: center; gap: 18px; margin-bottom: 20px; }

/* ---------- 头像裁切 ---------- */
.crop-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(3, 10, 18, 0.8);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.crop-dialog { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 20px 24px 24px; }
.crop-dialog header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.crop-dialog header strong { font-family: var(--serif); letter-spacing: 0.12em; }
.crop-frame {
  position: relative; overflow: hidden; margin: 0 auto;
  border: 1px solid var(--accent-dim); border-radius: 4px;
  touch-action: none; cursor: grab; background: var(--bg-deep);
}
.crop-frame:active { cursor: grabbing; }
.crop-frame img { position: absolute; left: 50%; top: 50%; max-width: none; user-select: none; }
.crop-frame .mask {
  position: absolute; inset: 0; pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(232, 226, 213, 0.25);
  border-radius: 50%; margin: 6px;
  border: 1px dashed rgba(232, 226, 213, 0.35);
  box-sizing: border-box;
}
.crop-zoom { display: flex; align-items: center; gap: 12px; margin: 16px 0; color: var(--ink-dim); font-size: 13px; }
.crop-zoom input[type="range"] { flex: 1; accent-color: var(--accent); }
.crop-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* ---------- Toast ---------- */
#toast-root { position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.toast {
  padding: 10px 22px; border-radius: 4px; font-size: 14px;
  background: var(--panel); border: 1px solid var(--line); color: var(--ink);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
  animation: toast-in 0.2s ease-out;
}
.toast.error { border-color: rgba(198, 123, 110, 0.55); color: var(--danger); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.loading-line { padding: 60px 0; text-align: center; color: var(--ink-faint); letter-spacing: 0.2em; font-family: var(--serif); }

.back-link { display: inline-block; margin-bottom: 20px; color: var(--ink-dim); font-size: 13.5px; }
.back-link:hover { color: var(--ink); }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .topbar { padding: 0 14px; gap: 10px; }
  .brand small { display: none; }
  .page { padding: 24px 16px 64px; }
  .detail-head { flex-direction: column; }
  .detail-cover { width: 150px; }
  .account-grid { grid-template-columns: 1fr; }
  .book-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 18px 12px; }
  .notif-panel { width: min(340px, calc(100vw - 24px)); }
  .topnav a { padding: 6px 8px; }
}