/* ── Flatpickr 主题覆盖 ── */
    .flatpickr-calendar {
        background: #1c1c1e; border: 1px solid rgba(255,255,255,0.10);
        border-radius: 22px; box-shadow: 0 8px 32px rgba(0,0,0,0.5);
        font-family: inherit; padding: 8px;
    }
    [data-theme="light"] .flatpickr-calendar {
        background: #ffffff; border-color: rgba(0,0,0,0.10);
        box-shadow: 0 8px 24px rgba(0,0,0,0.13);
    }
    /* 胶囊日历容器：强制实色背景，防止透明叠加 */
    .pf-float .pf-cform { background: #1c1c1e; }
    [data-theme="light"] .pf-float .pf-cform { background: #ffffff; }
    .flatpickr-months .flatpickr-month,
    .flatpickr-weekdays, span.flatpickr-weekday {
        background: transparent; color: rgba(255,255,255,0.5); fill: rgba(255,255,255,0.5);
    }
    [data-theme="light"] .flatpickr-months .flatpickr-month,
    [data-theme="light"] .flatpickr-weekdays,
    [data-theme="light"] span.flatpickr-weekday { color: rgba(0,0,0,0.4); fill: rgba(0,0,0,0.4); }
    .flatpickr-current-month input.cur-year,
    .flatpickr-current-month .flatpickr-monthDropdown-months,
    .flatpickr-current-month .cur-month {
        color: rgba(255,255,255,0.85) !important; font-weight: 600;
    }
    .flatpickr-current-month .flatpickr-monthDropdown-months {
        opacity: 0; position: absolute; pointer-events: none;
    }
    [data-theme="light"] .flatpickr-current-month input.cur-year,
    [data-theme="light"] .flatpickr-current-month .flatpickr-monthDropdown-months,
    [data-theme="light"] .flatpickr-current-month .cur-month { color: rgba(0,0,0,0.85) !important; }
    .flatpickr-day { color: rgba(255,255,255,0.75); border-radius: 999px; }
    [data-theme="light"] .flatpickr-day { color: rgba(0,0,0,0.75); }
    .flatpickr-day:hover { background: rgba(255,255,255,0.09); border-color: transparent; }
    [data-theme="light"] .flatpickr-day:hover { background: rgba(0,0,0,0.06); }
    .flatpickr-day.today,
    [data-theme="light"] .flatpickr-day.today { border-color: transparent; }
    .flatpickr-day.selected, .flatpickr-day.startRange, .flatpickr-day.endRange {
        background: #60a5fa; border-color: #60a5fa; color: #fff; border-radius: 999px;
    }
    [data-theme="light"] .flatpickr-day.selected,
    [data-theme="light"] .flatpickr-day.startRange,
    [data-theme="light"] .flatpickr-day.endRange {
        background: #2563eb; border-color: #2563eb;
    }
    .flatpickr-day.inRange {
        background: rgba(96,165,250,0.18); border-color: transparent; box-shadow: none; border-radius: 0;
        color: rgba(255,255,255,0.85);
    }
    [data-theme="light"] .flatpickr-day.inRange {
        background: rgba(37,99,235,0.12); color: rgba(0,0,0,0.75);
    }
    .flatpickr-day.flatpickr-disabled, .flatpickr-day.prevMonthDay, .flatpickr-day.nextMonthDay {
        color: rgba(255,255,255,0.2) !important; background: transparent !important; border-color: transparent !important;
    }
    [data-theme="light"] .flatpickr-day.flatpickr-disabled,
    [data-theme="light"] .flatpickr-day.prevMonthDay,
    [data-theme="light"] .flatpickr-day.nextMonthDay { color: rgba(0,0,0,0.2) !important; background: transparent !important; border-color: transparent !important; }
    .flatpickr-months .flatpickr-prev-month svg,
    .flatpickr-months .flatpickr-next-month svg { fill: rgba(255,255,255,0.5); }
    [data-theme="light"] .flatpickr-months .flatpickr-prev-month svg,
    [data-theme="light"] .flatpickr-months .flatpickr-next-month svg { fill: rgba(0,0,0,0.4); }
    .flatpickr-months .flatpickr-prev-month:hover svg,
    .flatpickr-months .flatpickr-next-month:hover svg { fill: #60a5fa; }
    [data-theme="light"] .flatpickr-months .flatpickr-prev-month:hover svg,
    [data-theme="light"] .flatpickr-months .flatpickr-next-month:hover svg { fill: #2563eb; }
    .flatpickr-calendar {
        z-index: 10001 !important;
        min-width: 246px !important;
        width: 246px !important;
        max-width: 246px !important;
    }
    .flatpickr-calendar.pf-cal {
        z-index: 10001 !important;
    }
    /* 自定义年份选择器 */
    .cur-year-wrap { display: inline-block; }
    .cur-year-btn {
        background: none; border: none; outline: none; border-radius: 6px; cursor: pointer;
        color: rgba(255,255,255,0.85); font-weight: 600; font-size: inherit; font-family: inherit;
        padding: 1px 4px; transition: background 0.12s; line-height: inherit;
    }
    .cur-year-btn:hover { background: rgba(255,255,255,0.12); }
    [data-theme="light"] .cur-year-btn { color: rgba(0,0,0,0.85); }
    [data-theme="light"] .cur-year-btn:hover { background: rgba(0,0,0,0.08); }
    .pf-year-drop {
        display: none; position: fixed;
        background: #1c1c1e; border: 1px solid rgba(255,255,255,0.12);
        border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,0.40);
        padding: 6px; z-index: 99999;
        grid-template-columns: repeat(3, 1fr); gap: 3px; width: 162px;
    }
    .pf-year-drop.open { display: grid; }
    .pf-year-item {
        padding: 6px 4px; border-radius: 6px; text-align: center;
        font-size: 0.82rem; font-weight: 500; cursor: pointer;
        color: rgba(255,255,255,0.65); transition: background 0.1s;
    }
    .pf-year-item:hover { background: rgba(255,255,255,0.09); color: #fff; }
    .pf-year-item.pf-year-active { background: rgba(96,165,250,0.18); color: #60a5fa; font-weight: 700; }
    [data-theme="light"] .pf-year-drop { background: #fff; border-color: rgba(0,0,0,0.1); }
    [data-theme="light"] .pf-year-item { color: rgba(0,0,0,0.6); }
    [data-theme="light"] .pf-year-item:hover { background: rgba(0,0,0,0.06); color: #111; }
    [data-theme="light"] .pf-year-item.pf-year-active { background: rgba(37,99,235,0.1); color: #2563eb; }
    .cur-month { cursor: pointer; border-radius: 6px; padding: 1px 4px; transition: background 0.12s; }
    .cur-month:hover { background: rgba(255,255,255,0.12); }
    [data-theme="light"] .cur-month:hover { background: rgba(0,0,0,0.08); }
    .pf-month-drop {
        display: none; position: fixed;
        background: #1c1c1e; border: 1px solid rgba(255,255,255,0.12);
        border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,0.40);
        padding: 6px; z-index: 99999;
        grid-template-columns: repeat(3, 1fr); gap: 3px; width: 162px;
    }
    .pf-month-drop.open { display: grid; }
    .pf-month-item {
        padding: 6px 4px; border-radius: 6px; text-align: center;
        font-size: 0.82rem; font-weight: 500; cursor: pointer;
        color: rgba(255,255,255,0.65); transition: background 0.1s; white-space: nowrap;
    }
    .pf-month-item:hover { background: rgba(255,255,255,0.09); color: #fff; }
    .pf-month-item.pf-month-active { background: rgba(96,165,250,0.18); color: #60a5fa; font-weight: 700; }
    [data-theme="light"] .pf-month-drop { background: #fff; border-color: rgba(0,0,0,0.1); }
    [data-theme="light"] .pf-month-item { color: rgba(0,0,0,0.6); }
    [data-theme="light"] .pf-month-item:hover { background: rgba(0,0,0,0.06); color: #111; }
    [data-theme="light"] .pf-month-item.pf-month-active { background: rgba(37,99,235,0.1); color: #2563eb; }

    /* ── 日期侧边卡片 ── */
    .page-with-sidebar {
        display: flex; gap: 16px; align-items: flex-start;
    }
    .page-main { flex: 1; min-width: 0; }
    .date-sidebar { flex: 0 0 290px; position: sticky; top: 16px; }
    .date-sidebar-card {
        background: var(--surface); border: 1px solid var(--border);
        border-radius: 14px; overflow: hidden;
    }
    .date-sidebar-periods {
        display: flex; flex-wrap: wrap; gap: 4px; padding: 8px 8px 4px;
    }
    .ds-period-btn {
        padding: 2px 8px; border-radius: 20px; border: 1px solid var(--border);
        font-size: 0.72rem; font-weight: 600; color: var(--text-tertiary);
        background: transparent; cursor: pointer; transition: all 0.12s; text-decoration: none;
        display: inline-block;
    }
    .ds-period-btn:hover { background: var(--surface-hover); color: var(--text-secondary); }
    .ds-period-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }
    .date-sidebar-cal { padding: 0; }
    /* flatpickr 被插入为 #pfInlineCal 的兄弟节点，需用父容器 #pfCalExpanded 作选择器 */
    #pfCalExpanded .flatpickr-calendar.inline,
    #adjCalExpanded .flatpickr-calendar.inline,
    .pf-single-cal-popup .flatpickr-calendar.inline {
        box-shadow: none !important; border: none !important; background: transparent !important;
        padding: 0 !important; border-radius: 0 !important;
        position: relative !important; margin: 4px;
    }
    #pfCalExpanded .flatpickr-innerContainer,
    #pfCalExpanded .flatpickr-days,
    #adjCalExpanded .flatpickr-innerContainer,
    #adjCalExpanded .flatpickr-days,
    .pf-single-cal-popup .flatpickr-innerContainer,
    .pf-single-cal-popup .flatpickr-days {
        overflow: visible;
    }
    /* 日历紧凑模式 */
    .date-sidebar-submit {
        display: block; width: calc(100% - 12px); margin: 2px 6px 6px;
        padding: 5px; border-radius: 7px; border: none; cursor: pointer;
        font-size: 0.76rem; font-weight: 600; flex-shrink: 0;
        background: var(--blue-dim); color: var(--blue); transition: all 0.12s;
    }
    .date-sidebar-submit:hover { background: var(--blue); color: #fff; }
    .date-sidebar-submit:disabled { opacity: 0.4; pointer-events: none; }