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

:root {
  --bg: #0d0d0d;
  --bg2: #141414;
  --bg3: #1a1a1a;
  --border: #2a2a2a;
  --text: #e8e8e8;
  --text2: #888;
  --accent: #fff;
  --tag-blue: #1a3a5c;
  --tag-blue-text: #5ab4ff;
  --tag-green: #0f3020;
  --tag-green-text: #4caf82;
  --tag-orange: #3a2000;
  --tag-orange-text: #ffaa44;
  --tag-red: #3a0f0f;
  --tag-red-text: #ff6b6b;
  --sidebar-w: 220px;
}

body.day {
  --bg: #f5f5f5;
  --bg2: #ffffff;
  --bg3: #efefef;
  --border: #ddd;
  --text: #1a1a1a;
  --text2: #888;
  --accent: #111;
  --tag-blue: #dbeeff;
  --tag-blue-text: #1a6fc4;
  --tag-green: #d4f5e5;
  --tag-green-text: #1a7a4a;
  --tag-orange: #fff0d4;
  --tag-orange-text: #b86a00;
  --tag-red: #ffe0e0;
  --tag-red-text: #c0392b;
}

body.day td { border-bottom: 1px solid #eee; }

body { background: var(--bg); color: var(--text); font-family: -apple-system, 'PingFang SC', sans-serif; display: flex; height: 100vh; overflow: hidden; font-size: 16px; }

/* ── 侧边栏 ── */
#sidebar {
  width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease;
  flex-shrink: 0;
  z-index: 100;
  overflow: hidden;
}
#sidebar.collapsed { transform: translateX(calc(-1 * var(--sidebar-w))); position: absolute; height: 100%; }
#sidebar-nav { flex: 1; overflow-y: auto; }
#sidebar-nav::-webkit-scrollbar { width: 3px; }
#sidebar-nav::-webkit-scrollbar-track { background: transparent; }
#sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-header { padding: 20px 16px 16px; border-bottom: 1px solid var(--border); }
.sidebar-header h1 { font-size: 14px; font-weight: 600; color: var(--accent); letter-spacing: 1px; }
.sidebar-header p { font-size: 11px; color: var(--text2); margin-top: 4px; }

.nav-section { padding: 12px 0; border-bottom: 1px solid var(--border); }
.nav-section-title { font-size: 10px; color: var(--text2); padding: 0 16px 8px; letter-spacing: 1px; text-transform: uppercase; }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 16px; cursor: pointer; font-size: 15px;
  color: var(--text2); transition: all 0.15s; position: relative;
}
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: var(--bg3); color: var(--accent); }
.nav-item.active::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--accent); }
.nav-item .icon { font-size: 15px; width: 18px; text-align: center; }
.nav-item .badge {
  margin-left: auto; background: var(--tag-red); color: var(--tag-red-text);
  font-size: 10px; padding: 1px 6px; border-radius: 10px; min-width: 18px; text-align: center;
}

/* ── 主区域 ── */
#main { flex: 1; display: flex; flex-direction: column; overflow: hidden; transition: margin-left 0.25s ease; }

#topbar {
  height: 48px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; padding: 0 20px; gap: 12px; flex-shrink: 0; background: var(--bg);
}
#menu-toggle { background: none; border: none; color: var(--text2); cursor: pointer; font-size: 18px; padding: 4px; line-height: 1; }
#menu-toggle:hover { color: var(--text); }
#page-title { font-size: 14px; font-weight: 500; color: var(--text); }
#topbar-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
#search-box {
  background: var(--bg3); border: 1px solid var(--border); border-radius: 6px;
  padding: 5px 12px; color: var(--text); font-size: 13px; width: 200px; outline: none;
}
#search-box::placeholder { color: var(--text2); }
#search-box:focus { border-color: #444; }
#today-date { font-size: 12px; color: var(--text2); }

#workspace { flex: 1; overflow-y: auto; padding: 24px; }
#workspace::-webkit-scrollbar { width: 4px; }
#workspace::-webkit-scrollbar-track { background: transparent; }
#workspace::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.panel { display: none; }
.panel.active { display: block; }

.stat-row { display: flex; gap: 12px; margin-bottom: 24px; flex-wrap: wrap; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; min-width: 140px; flex: 1; }
.stat-card .num { font-size: 28px; font-weight: 300; color: var(--accent); }
.stat-card .label { font-size: 12px; color: var(--text2); margin-top: 4px; }

.table-wrap { background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.table-toolbar { padding: 12px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text2); }
.table-toolbar strong { color: var(--text); }

.btn { background: var(--bg3); border: 1px solid var(--border); color: var(--text); padding: 5px 12px; border-radius: 5px; font-size: 12px; cursor: pointer; transition: all 0.15s; }
.btn:hover { border-color: #555; background: #222; }
.btn-primary { background: #fff; color: #000; border-color: #fff; }
.btn-primary:hover { background: #ddd; }

table { width: 100%; border-collapse: collapse; font-size: 15px; }
th { padding: 10px 14px; text-align: left; color: var(--text2); font-weight: 400; font-size: 14px; border-bottom: 1px solid var(--border); letter-spacing: 0.5px; }
td { padding: 12px 14px; border-bottom: 1px solid #1e1e1e; color: var(--text); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg3); }

.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 11px; }
.tag-blue { background: var(--tag-blue); color: var(--tag-blue-text); }
.tag-green { background: var(--tag-green); color: var(--tag-green-text); }
.tag-orange { background: var(--tag-orange); color: var(--tag-orange-text); }
.tag-red { background: var(--tag-red); color: var(--tag-red-text); }

.done-btn { background: none; border: 1px solid var(--border); color: var(--text2); padding: 3px 10px; border-radius: 4px; font-size: 11px; cursor: pointer; }
.done-btn:hover { border-color: var(--tag-green-text); color: var(--tag-green-text); }
.editable-cell { cursor: pointer; transition: background .15s; }
.editable-cell:hover { background: var(--bg3); outline: 1px dashed var(--border); outline-offset: -1px; }
.btn-paid { background: #1a3a2a; color: #4ade80; border-color: #2d5a3d; }
body.day .btn-paid { background: #d4f5e5; color: #1a7a4a; border-color: #1a7a4a; }
.editable-cell { cursor: pointer; }
.editable-cell:hover { background: var(--bg3); border-radius: 4px; }
.resizable-th { position: relative; }
.col-resizer { position: absolute; right: 0; top: 0; width: 6px; height: 100%; cursor: col-resize; user-select: none; z-index: 1; }
.col-resizer:hover, .col-resizer.dragging { background: var(--primary); opacity: 0.5; }

.empty { text-align: center; padding: 60px 20px; color: var(--text2); font-size: 13px; }
.empty .icon { font-size: 32px; margin-bottom: 12px; }

.placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 300px; color: var(--text2); font-size: 13px; gap: 12px; background: var(--bg2); border: 1px solid var(--border); border-radius: 8px; }
.placeholder .big { font-size: 36px; }

/* ── 登录遮罩 + 毛玻璃 ── */
#login-overlay {
  position: fixed; inset: 0; z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  transition: opacity 0.35s ease;
}
#login-overlay.hidden {
  opacity: 0; pointer-events: none;
}
#login-box {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 16px; padding: 40px 36px 32px; width: 360px;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
  animation: loginSlideIn 0.35s ease;
}
@keyframes loginSlideIn {
  from { opacity: 0; transform: translateY(-20px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
#login-box .login-icon { font-size: 40px; margin-bottom: 12px; }
#login-box h2 { font-size: 18px; font-weight: 600; color: var(--accent); margin-bottom: 4px; }
#login-box #login-subtitle { font-size: 13px; color: var(--text2); margin-bottom: 24px; }
#login-form { display: flex; flex-direction: column; gap: 12px; }
#login-form input {
  background: var(--bg3); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 14px; color: var(--text); font-size: 14px; outline: none;
  transition: border-color 0.2s;
}
#login-form input:focus { border-color: #555; }
#login-form input::placeholder { color: var(--text2); }
#login-error { color: var(--tag-red-text); font-size: 12px; min-height: 18px; }
#login-btn {
  background: #fff; color: #000; border: none; border-radius: 8px;
  padding: 10px; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background 0.15s;
}
#login-btn:hover { background: #ddd; }
#login-btn:disabled { opacity: 0.5; cursor: not-allowed; }
#login-hint { font-size: 11px; color: var(--tag-orange-text); margin-top: 12px; }
body.day #login-btn { background: #111; color: #fff; }
body.day #login-btn:hover { background: #333; }

/* 锁屏时的标题样式 */
#login-overlay .lock-msg { font-size: 12px; color: var(--text2); margin-top: 16px; }

/* ── 强制改密弹窗 ── */
#force-pwd-overlay {
  position: fixed; inset: 0; z-index: 10000;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
#force-pwd-box {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 16px; padding: 40px 36px 32px; width: 360px;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
  animation: loginSlideIn 0.35s ease;
}
#force-pwd-box .login-icon { font-size: 40px; margin-bottom: 12px; }
#force-pwd-box h2 { font-size: 18px; font-weight: 600; color: var(--accent); margin-bottom: 4px; }
#force-pwd-form { display: flex; flex-direction: column; gap: 12px; }
#force-pwd-form input {
  background: var(--bg3); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 14px; color: var(--text); font-size: 14px; outline: none;
  transition: border-color 0.2s;
}
#force-pwd-form input:focus { border-color: #555; }
#force-pwd-form input::placeholder { color: var(--text2); }
#fpwd-error { color: var(--tag-red-text); font-size: 12px; min-height: 18px; }
#fpwd-btn {
  background: #fff; color: #000; border: none; border-radius: 8px;
  padding: 10px; font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background 0.15s;
}
#fpwd-btn:hover { background: #ddd; }
#fpwd-btn:disabled { opacity: 0.5; cursor: not-allowed; }
body.day #fpwd-btn { background: #111; color: #fff; }
body.day #fpwd-btn:hover { background: #333; }