* { box-sizing: border-box; margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; -webkit-tap-highlight-color: transparent; }
body { background-color: var(--bg); color: var(--text); padding: env(safe-area-inset-top, 10px) 8px calc(env(safe-area-inset-bottom, 10px) + 64px) 8px; transition: background-color 0.2s, color 0.2s; user-select: none; }

header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; flex-wrap: wrap; gap: 6px; }
h1 { font-size: 1.15rem; font-weight: 800; color: var(--text); letter-spacing: -0.3px; }

.header-actions { display: flex; align-items: center; gap: 6px; }
.theme-select { padding: 4px 6px; border: 1px solid var(--border); background: var(--card-bg); color: var(--text); border-radius: 6px; font-size: 0.75rem; font-weight: 600; cursor: pointer; outline: none; }
.theme-toggle-btn { padding: 4px 8px; border: 1px solid var(--border); background: var(--card-bg); color: var(--text); border-radius: 6px; cursor: pointer; font-size: 0.75rem; font-weight: 600; display: flex; align-items: center; gap: 4px; }

.sync-bar { display: flex; justify-content: space-between; align-items: center; background: var(--card-bg); border: 1px solid var(--border); border-radius: 6px; padding: 5px 10px; margin-bottom: 8px; font-size: 0.75rem; }
.sync-status { display: flex; align-items: center; gap: 5px; font-weight: 600; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #64748b; }
.status-dot.online { background: #22c55e; }

.week-nav-bar { display: flex; justify-content: space-between; align-items: center; background: var(--card-bg); padding: 6px 10px; border-radius: 8px; border: 1px solid var(--border); margin-bottom: 8px; flex-wrap: wrap; gap: 6px; }
.week-nav-btns { display: flex; align-items: center; gap: 4px; }
.week-display { font-weight: 700; font-size: 0.80rem; color: var(--text); }

.control-bar { display: flex; gap: 5px; margin-top: 8px; margin-bottom: 8px; flex-wrap: wrap; align-items: center; }
.btn { padding: 5px 9px; background: var(--primary); color: #ffffff; border: none; border-radius: 6px; cursor: pointer; font-size: 0.75rem; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; }
.btn-secondary { background: #64748b; color: #ffffff; }
.btn-warning { background: #f59e0b; color: #ffffff; }
.btn-danger { background: #ef4444; color: #ffffff; }
.btn-edit-mode { border: 2px solid var(--primary); font-weight: 700; }
.btn:active { transform: scale(0.97); }

.checkbox-label { display: flex; align-items: center; gap: 4px; font-size: 0.75rem; font-weight: 600; cursor: pointer; color: var(--text); }

.timetable-container { width: 100%; overflow-x: auto; background: var(--card-bg); border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); border: 1px solid var(--border); -webkit-overflow-scrolling: touch; }
table { table-layout: fixed; border-collapse: collapse; }
th, td { border: 1px solid var(--border); padding: 0; text-align: center; vertical-align: top; }
th { background: var(--table-th-bg); font-size: 0.72rem; color: var(--text-muted); height: 34px; padding: 2px; }
th.today-header { background: var(--today-header-bg); color: var(--today-header-text); border-bottom: 2px solid var(--primary); font-weight: 700; }
.col-time { width: 68px; background: var(--card-bg); font-size: 0.62rem; font-weight: 600; vertical-align: middle; padding: 4px 2px; text-align: center; }

.table-col-wrapper { position: relative; width: 100%; height: 100%; }
.cell-slot { height: 56px; cursor: pointer; padding: 2px; display: flex; flex-direction: column; justify-content: center; align-items: center; transition: background 0.15s ease; position: relative; }
.cell-slot:active { background: var(--slot-hover); }

/* 對齊樣式類別 */
.align-left { text-align: left !important; align-items: flex-start !important; }
.align-center { text-align: center !important; align-items: center !important; }
.align-right { text-align: right !important; align-items: flex-end !important; }

/* 課程、家教與工作卡片樣式 */
.slot-item { border-radius: 4px; padding: 3px 4px; font-size: 0.68rem; box-shadow: 0 1px 2px rgba(0,0,0,0.06); border: none; width: 100%; height: 100%; display: flex; flex-direction: column; justify-content: center; line-height: 1.2; position: relative; }
.item-title { font-weight: 700; font-size: 0.68rem; white-space: normal; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; word-break: break-all; }
.item-sub { font-size: 0.60rem; opacity: 0.9; margin-top: 1px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.memo-badge { position: absolute; top: 2px; right: 2px; background: #fbbf24; color: #78350f; font-size: 0.55rem; padding: 1px 3px; border-radius: 3px; font-weight: 700; box-shadow: 0 1px 2px rgba(0,0,0,0.15); }

.col-overlay-container { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 10; }

.tutoring-float-card {
  position: absolute;
  left: 2px;
  right: 2px;
  pointer-events: auto;
  border-radius: 6px;
  padding: 3px 4px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  z-index: 12;
  line-height: 1.2;
}
.tutoring-float-card.is-tutoring,
.tutoring-float-card.is-work {
  border: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}
.tutoring-float-card.is-override-temp {
  border: 2px solid var(--primary);
  border-radius: 6px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.15), inset 0 0 0 1px var(--card-bg);
  justify-content: center;
}

.evening-row td, .noon-row td { background: var(--card-bg); vertical-align: middle; }
.noon-cell, .evening-cell { height: 56px; padding: 2px; display: flex; flex-direction: column; justify-content: center; align-items: stretch; }
.evening-empty, .noon-empty { font-size: 0.68rem; color: var(--text-muted); text-align: center; }

.evening-card, .noon-card {
  border-radius: 4px;
  padding: 3px 4px;
  cursor: pointer;
  width: 100%;
  height: 100%;
  font-size: 0.68rem;
  line-height: 1.2;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.evening-card.is-tutoring,
.evening-card.is-work {
  border: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}
.evening-card.is-override-temp, .noon-card {
  border: 2px solid var(--primary);
  border-radius: 4px;
  box-shadow: 0 3px 8px rgba(0,0,0,0.15), inset 0 0 0 1px var(--card-bg);
  justify-content: center;
}

.schedule-footer-banner { background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; margin-top: 8px; text-align: center; font-size: 0.78rem; font-weight: 700; color: var(--text); cursor: pointer; transition: background 0.2s; }
.schedule-footer-banner:hover { background: var(--table-th-bg); }

.mobile-tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: calc(env(safe-area-inset-bottom, 0px) + 52px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 90;
}
.mobile-tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  height: 100%;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
}
.mobile-tab-item.active { color: var(--primary); font-weight: 700; }
.mobile-tab-icon { font-size: 1.15rem; margin-bottom: 1px; }

.billing-panel, .personal-finance-panel { background: var(--card-bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border); display: none; }
.billing-type-btn {
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--table-th-bg);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}
.billing-type-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.month-filter-bar { display: flex; align-items: center; gap: 6px; background: var(--table-th-bg); padding: 8px 10px; border-radius: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.month-filter-bar select, .month-filter-bar input { padding: 4px 6px; border-radius: 4px; border: 1px solid var(--border); font-size: 0.80rem; background: var(--input-bg); color: var(--text); }

.student-filter-chips, .finance-filter-chips { display: flex; gap: 5px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 10px; align-items: center; }
.student-chip, .finance-chip { padding: 3px 10px; border-radius: 12px; font-size: 0.72rem; font-weight: 600; background: var(--table-th-bg); color: var(--text-muted); border: 1px solid var(--border); cursor: pointer; white-space: nowrap; }
.student-chip.active, .finance-chip.active { background: var(--primary); color: #ffffff; border-color: var(--primary); }

.stats-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(80px, 1fr)); gap: 6px; margin-bottom: 12px; }
.stat-box { background: var(--stat-card-bg); border: 1px solid var(--border); padding: 6px 8px; border-radius: 6px; cursor: pointer; transition: transform 0.1s; text-align: center; }
.stat-box:active { transform: scale(0.97); }
.stat-title { font-size: 0.65rem; color: var(--text-muted); margin-bottom: 2px; }
.stat-val { font-size: 0.90rem; font-weight: 700; color: var(--primary); }

.student-stats-section { margin-bottom: 14px; border-top: 1px solid var(--border); padding-top: 10px; }
.student-stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 6px; margin-top: 6px; }
.student-stat-card { background: var(--student-stat-bg); border: 1px solid var(--student-stat-border); border-radius: 6px; padding: 6px 8px; color: var(--student-stat-text); }
.student-stat-name { font-weight: 700; font-size: 0.82rem; margin-bottom: 3px; border-bottom: 1px solid rgba(0,0,0,0.1); padding-bottom: 2px; }
.student-stat-row { display: flex; justify-content: space-between; font-size: 0.72rem; margin-bottom: 2px; }

.billing-table, .finance-table { width: 100%; border-collapse: collapse; margin-top: 8px; min-width: 480px; }
.billing-table th, .billing-table td, .finance-table th, .finance-table td { padding: 5px 6px; border: 1px solid var(--border); font-size: 0.75rem; }
.tag-paid { background: #dcfce7; color: #15803d; padding: 1px 4px; border-radius: 3px; font-size: 0.68rem; font-weight: 600; }
.tag-unpaid { background: #fee2e2; color: #b91c1c; padding: 1px 4px; border-radius: 3px; font-size: 0.68rem; font-weight: 600; }
.tag-income { background: #dcfce7; color: #15803d; padding: 1px 5px; border-radius: 3px; font-size: 0.68rem; font-weight: 600; }
.tag-expense { background: #fee2e2; color: #b91c1c; padding: 1px 5px; border-radius: 3px; font-size: 0.68rem; font-weight: 600; }
.tag-receivable { background: #fef08a; color: #713f12; padding: 1px 5px; border-radius: 3px; font-size: 0.68rem; font-weight: 600; }
.tag-payable { background: #ffedd5; color: #9a3412; padding: 1px 5px; border-radius: 3px; font-size: 0.68rem; font-weight: 600; }
.tag-hidden { background: #e2e8f0; color: #64748b; padding: 1px 4px; border-radius: 3px; font-size: 0.62rem; font-weight: 600; margin-left: 4px; }

.cat-manage-item { display: flex; justify-content: space-between; align-items: center; padding: 6px 8px; border-bottom: 1px solid var(--border); font-size: 0.78rem; }
.cat-manage-actions { display: flex; gap: 4px; }

.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); justify-content: center; align-items: center; z-index: 100; padding: 12px; }
.modal.active { display: flex; }
.modal-content { background: var(--modal-bg); color: var(--text); border-radius: 10px; width: 100%; max-width: 440px; max-height: 85vh; overflow-y: auto; padding: 14px; position: relative; border: 1px solid var(--border); }
.modal-header { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.form-group { margin-bottom: 8px; }
.form-group label { display: block; font-size: 0.74rem; font-weight: 600; color: var(--text-muted); margin-bottom: 3px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.80rem; background: var(--input-bg); color: var(--text); outline: none; }
.form-row { display: flex; gap: 6px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 6px; margin-top: 12px; }

.detail-card { background: var(--table-th-bg); border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; margin-bottom: 8px; }
.detail-label { font-size: 0.70rem; font-weight: 600; color: var(--text-muted); margin-top: 4px; }
.detail-value { font-size: 0.80rem; color: var(--text); margin-bottom: 2px; word-break: break-all; }

.period-edit-table { width: 100%; border-collapse: collapse; margin-top: 6px; font-size: 0.75rem; }
.period-edit-table th, .period-edit-table td { padding: 4px 6px; border: 1px solid var(--border); }
.period-edit-table input { padding: 3px; border-radius: 4px; border: 1px solid var(--border); width: 100%; font-size: 0.75rem; background: var(--input-bg); color: var(--text); }