/* ===== 设计系统变量 ===== */
:root {
  --primary: #3B82F6;
  --primary-strong: #2563EB;
  --primary-deep: #1D4ED8;
  --bg: #F5F7FA;
  --surface: #FFFFFF;
  --text: #1F2937;
  --text-soft: #6B7280;
  --danger: #EF4444;
  --success: #10B981;
  --warning: #F59E0B;
  --border: #E5E7EB;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(31, 41, 55, 0.08);
  --shadow-lg: 0 20px 60px rgba(31, 41, 55, 0.18);
  --font: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Consolas, monospace;
}

/* ===== 暗色主题变量 ===== */
[data-theme="dark"] {
  --primary: #60A5FA;
  --primary-strong: #3B82F6;
  --primary-deep: #2563EB;
  --bg: #0F172A;
  --surface: #1E293B;
  --text: #E2E8F0;
  --text-soft: #94A3B8;
  --danger: #F87171;
  --success: #34D399;
  --warning: #FBBF24;
  --border: #334155;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: var(--font);
  background: linear-gradient(160deg, #EEF2FF 0%, var(--bg) 45%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  transition: background .25s ease, color .25s ease;
}

[data-theme="dark"] body {
  background: linear-gradient(160deg, #1E293B 0%, var(--bg) 45%);
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 40px;
}

/* ===== 顶部标题栏 ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-deep));
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18);
}
.topbar h1 { font-size: 24px; font-weight: 600; letter-spacing: 0.2px; }
.top-actions { display: flex; align-items: center; gap: 10px; }

/* ===== 按钮 ===== */
.btn {
  border: none; cursor: pointer; font-family: inherit;
  font-size: 14px; font-weight: 500; border-radius: var(--radius-sm);
  padding: 10px 18px; transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff; box-shadow: 0 6px 16px rgba(37, 99, 235, 0.32);
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-strong), var(--primary-deep)); transform: translateY(-1px); box-shadow: 0 10px 22px rgba(37, 99, 235, 0.40); }
.btn-primary:active { transform: translateY(0); }
.plus { font-size: 18px; line-height: 1; }
#themeBtn { width: 42px; padding: 10px 0; justify-content: center; font-size: 16px; line-height: 1; }
.db-icon { font-size: 15px; line-height: 1; }

/* ===== 数据管理弹窗 ===== */
.data-hint { font-size: 13px; color: var(--text-soft); }
#dataModal .modal-body .btn { width: 100%; justify-content: center; }
#dataModal .import-row .btn { width: auto; }
.import-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.import-file-name { font-size: 12.5px; color: var(--text-soft); word-break: break-all; }
.data-msg { font-size: 13px; padding: 8px 12px; border-radius: var(--radius-sm); }
.data-msg.is-ok { background: rgba(16, 185, 129, 0.12); color: var(--success); }
.data-msg.is-err { background: rgba(239, 68, 68, 0.12); color: var(--danger); }
[data-theme="dark"] .data-msg.is-ok { background: rgba(52, 211, 153, 0.15); }
[data-theme="dark"] .data-msg.is-err { background: rgba(248, 113, 113, 0.15); }
.btn-ghost { background: #F1F5F9; color: var(--text-soft); }
.btn-ghost:hover { background: #E2E8F0; }
[data-theme="dark"] .btn-ghost { background: #334155; color: var(--text-soft); }
[data-theme="dark"] .btn-ghost:hover { background: #475569; }

/* ===== 卡片 ===== */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

/* ===== 表格 ===== */
.table-wrap { width: 100%; overflow-x: auto; }
.task-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.task-table thead th {
  text-align: left; font-size: 13px; font-weight: 600;
  color: var(--text-soft); background: #F8FAFC;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.task-table tbody td {
  padding: 14px 16px; border-bottom: 1px solid #F1F5F9;
  font-size: 14px; vertical-align: middle;
}
.task-table tbody tr:nth-child(even) { background: #FBFCFE; }
.task-table tbody tr:hover { background: #F0F6FF; }
[data-theme="dark"] .task-table thead th { background: #243044; color: var(--text-soft); }
[data-theme="dark"] .task-table tbody tr:nth-child(even) { background: #1A2538; }
[data-theme="dark"] .task-table tbody tr:hover { background: #25324A; }
[data-theme="dark"] .task-table tbody td { border-bottom-color: #2A3850; }
[data-theme="dark"] .idx-badge { background: #2A3850; color: var(--primary); }
.col-drag { width: 28px; text-align: center; color: var(--text-soft); cursor: grab; }
.drag-handle { font-size: 16px; line-height: 1; user-select: none; }
tr.dragging { opacity: .45; }
tr.drag-over td { box-shadow: inset 0 2px 0 var(--primary); }
tr:hover .drag-handle { color: var(--primary-strong); }
.col-index { width: 44px; color: var(--text-soft); }
.col-ops { width: 168px; }
.idx-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 8px;
  background: #EEF2FF; color: var(--primary-strong);
  font-size: 13px; font-weight: 600;
}
.cell-name { font-weight: 500; }
.cell-time { color: var(--text-soft); white-space: nowrap; }
.timer-cell {
  font-family: var(--mono); font-size: 13.5px; font-weight: 600;
  white-space: nowrap; color: var(--primary-strong);
}
.timer-cell.is-over { color: var(--text-soft); opacity: .8; }
.timer-cell.is-done { color: var(--text-soft); }
.timer-cell.is-birthday { color: var(--warning); }
.timer-cell.is-today { color: var(--primary-strong); font-weight: 700; }
.timer-cell.is-safe { color: var(--primary-strong); }
.timer-cell.is-warn { color: var(--warning); }
.timer-cell.is-urgent { color: var(--danger); }

/* ===== 操作按钮 ===== */
.ops { display: flex; gap: 6px; flex-wrap: wrap; }
.op-btn {
  border: 1px solid var(--border); background: #fff; cursor: pointer;
  border-radius: 8px; padding: 5px 9px; font-size: 12.5px;
  color: var(--text); font-family: inherit;
  transition: all .15s ease;
}
[data-theme="dark"] .op-btn { background: #0F172A; color: var(--text); }
.op-btn:hover { border-color: var(--primary); color: var(--primary-strong); transform: translateY(-1px); }
.op-btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }
.op-btn.danger:hover { border-color: var(--danger); color: var(--danger); }

/* ===== 空态 ===== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-soft); }
.empty-icon { font-size: 40px; margin-bottom: 12px; }

/* ===== 页脚 ===== */
.footer { text-align: center; color: var(--text-soft); font-size: 13px; margin-top: 20px; }

/* ===== 弹窗 ===== */
.modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-overlay { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.45); backdrop-filter: blur(2px); animation: fade .2s ease; }
.modal-card {
  position: relative; width: 100%; max-width: 460px;
  background: var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 24px;
  animation: pop .22s cubic-bezier(.2,.9,.3,1.2);
}
[data-theme="dark"] .modal-overlay { background: rgba(2, 6, 23, 0.6); }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop { from { opacity: 0; transform: scale(.94) translateY(8px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.modal-head h2 { font-size: 19px; font-weight: 600; }
.modal-close { border: none; background: transparent; font-size: 26px; line-height: 1; color: var(--text-soft); cursor: pointer; transition: color .15s; }
.modal-close:hover { color: var(--danger); }

/* ===== 表单 ===== */
.modal-body { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field-label { font-size: 13px; font-weight: 500; color: var(--text-soft); }
.input {
  width: 100%; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px 12px; font-size: 14px; font-family: inherit; color: var(--text);
  background: #fff; transition: border-color .15s, box-shadow .15s;
}
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15); }
[data-theme="dark"] .input {
  background: #0F172A; color: var(--text); border-color: var(--border);
}
[data-theme="dark"] .input::placeholder { color: #64748B; }
[data-theme="dark"] .input:focus { box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2); }
.textarea { resize: vertical; min-height: 64px; }

/* ===== 动态输入区（按类型显示）===== */
.type-panel { display: flex; }
.type-panel[hidden] { display: none; }
.type-panel.is-shown { animation: slideIn .22s ease; }
@keyframes slideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 标签式单选 ===== */
.seg { display: inline-flex; background: #F1F5F9; border-radius: var(--radius-sm); padding: 4px; gap: 4px; }
[data-theme="dark"] .seg { background: #0F172A; }
.seg-item {
  border: none; background: transparent; cursor: pointer; font-family: inherit;
  font-size: 13.5px; font-weight: 500; color: var(--text-soft);
  padding: 7px 16px; border-radius: 8px; transition: all .18s ease; white-space: nowrap;
}
.seg-item:hover { color: var(--primary-strong); }
.seg-item.is-active {
  background: #fff; color: var(--primary-strong);
  box-shadow: 0 2px 8px rgba(31, 41, 55, 0.12); font-weight: 600;
}
.seg-unit { width: 100%; justify-content: space-between; flex-wrap: wrap; }
.seg-unit .seg-item { flex: 1; padding: 7px 0; text-align: center; }

.countdown-row { display: flex; gap: 10px; align-items: stretch; }
.cd-value { flex: 0 0 110px; }
.fixedday-value { width: 100%; flex: none; }
.seg-unit { flex: 1; }
.type-lock-tip { font-size: 12px; color: var(--warning); margin-top: 2px; }

/* ===== 弹窗底部 ===== */
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }

/* ===== 响应式 ===== */
@media (max-width: 560px) {
  .topbar h1 { font-size: 20px; }
  .modal-card { padding: 20px; }
  .countdown-row { flex-direction: column; }
  .cd-value { flex: 1; }
}