/* ======================================================================
 *  开学文具采购预算 /tool/stationery-budget-calc
 *  风格：文具店 —— 天蓝 + 柠檬黄 + 便签卡
 *  深色模式随站点 [data-theme="dark"]，本页变量作用域 .sbc-page
 * ====================================================================== */

.sbc-page {
    --sbc-blue: #2563eb;
    --sbc-blue-2: #38bdf8;
    --sbc-sun: #facc15;
    --sbc-bg: #f0f7ff;
    --sbc-card: #ffffff;
    --sbc-soft: #eff6ff;
    --sbc-line: #d6e4f5;
    --sbc-text: #17233b;
    --sbc-muted: #64748b;
    --sbc-shadow: 0 12px 30px -16px rgba(37, 99, 235, .30);
    color: var(--sbc-text);
    padding-bottom: 70px;
    background:
        radial-gradient(color-mix(in srgb, var(--sbc-blue) 7%, transparent) 1.2px, transparent 1.6px) 0 0 / 22px 22px,
        radial-gradient(860px 360px at 8% -8%, rgba(56, 189, 248, .16), transparent 60%),
        radial-gradient(680px 340px at 94% 2%, rgba(250, 204, 21, .16), transparent 55%);
}
:root[data-theme="dark"] .sbc-page {
    --sbc-blue: #60a5fa;
    --sbc-blue-2: #38bdf8;
    --sbc-sun: #fde047;
    --sbc-bg: #0d1524;
    --sbc-card: #131e33;
    --sbc-soft: #182540;
    --sbc-line: #273952;
    --sbc-text: #e7eef9;
    --sbc-muted: #8fa3bd;
    --sbc-shadow: 0 14px 34px -18px rgba(0, 0, 0, .7);
}

/* ---------- 面包屑 ---------- */
.sbc-crumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--sbc-muted);
    padding: 18px 0 0;
}
.sbc-crumb a { color: var(--sbc-muted); text-decoration: none; }
.sbc-crumb a:hover { color: var(--sbc-blue); }
.sbc-crumb b { color: var(--sbc-text); font-weight: 600; }

/* ---------- Hero ---------- */
.sbc-hero { text-align: center; padding: 22px 0 26px; }
.sbc-hero-ic {
    display: inline-grid;
    place-items: center;
    width: 62px;
    height: 62px;
    font-size: 30px;
    border-radius: 50% 50% 50% 6px;
    background: var(--sbc-sun);
    box-shadow: var(--sbc-shadow);
    margin-bottom: 12px;
    transform: rotate(3deg);
}
.sbc-hero h1 {
    font-size: clamp(26px, 4vw, 36px);
    font-weight: 900;
    letter-spacing: -.02em;
    margin: 0 0 10px;
}
.sbc-hero p {
    max-width: 580px;
    margin: 0 auto;
    font-size: 15px;
    line-height: 1.8;
    color: var(--sbc-muted);
}
.sbc-hero em { font-style: normal; font-weight: 800; color: var(--sbc-blue); }

/* ---------- 年级选择 ---------- */
.sbc-grade {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}
.sbc-grade-label { font-size: 14px; font-weight: 700; }
.sbc-grade-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.sbc-grade-btn {
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    color: var(--sbc-muted);
    background: var(--sbc-card);
    border: 1.5px solid var(--sbc-line);
    border-radius: 999px;
    padding: 9px 20px;
    cursor: pointer;
    transition: all .16s;
}
.sbc-grade-btn:hover { border-color: var(--sbc-blue); color: var(--sbc-blue); }
.sbc-grade-btn.is-on {
    color: var(--sbc-text);
    background: var(--sbc-sun);
    border-color: var(--sbc-sun);
    box-shadow: 0 6px 14px -6px color-mix(in srgb, var(--sbc-sun) 80%, transparent);
}

/* ---------- 布局 ---------- */
.sbc-layout {
    display: grid;
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 20px;
    align-items: start;
}

/* ---------- 清单 ---------- */
.sbc-list-card {
    background: var(--sbc-card);
    border: 1px solid var(--sbc-line);
    border-radius: 18px;
    padding: 20px 22px;
    box-shadow: var(--sbc-shadow);
}
.sbc-list-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}
.sbc-list-head h2 { font-size: 17px; font-weight: 800; margin: 0; }
.sbc-list-head h2 small {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--sbc-blue);
    background: var(--sbc-soft);
    border-radius: 999px;
    padding: 3px 10px;
    margin-left: 6px;
}
.sbc-list-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.sbc-mini {
    font: inherit;
    font-size: 13px;
    font-weight: 700;
    color: var(--sbc-blue);
    background: var(--sbc-soft);
    border: 1px solid color-mix(in srgb, var(--sbc-blue) 25%, transparent);
    border-radius: 999px;
    padding: 6px 14px;
    cursor: pointer;
    transition: background .15s;
}
.sbc-mini:hover { background: color-mix(in srgb, var(--sbc-blue) 12%, transparent); }
.sbc-practice {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    user-select: none;
}
.sbc-practice small { font-weight: 400; color: var(--sbc-muted); }

.sbc-table-wrap { overflow-x: auto; }
.sbc-table { width: 100%; border-collapse: collapse; min-width: 620px; }
.sbc-table th {
    font-size: 12px;
    font-weight: 700;
    color: var(--sbc-muted);
    text-align: left;
    padding: 8px 8px;
    border-bottom: 2px solid var(--sbc-line);
    white-space: nowrap;
}
.sbc-table td { padding: 6px 8px; border-bottom: 1px dashed var(--sbc-line); }
.sbc-table tr.is-off td { opacity: .45; }
.sbc-col-buy { width: 40px; text-align: center; }
.sbc-col-cat { width: 90px; }
.sbc-col-num { width: 108px; text-align: right; }
.sbc-col-sub { width: 96px; }
.sbc-col-del { width: 36px; }
.sbc-table th.sbc-col-num, .sbc-table td.sbc-col-num { text-align: right; }
.sbc-table input[type="text"],
.sbc-table input[type="number"] {
    width: 100%;
    font: inherit;
    font-size: 13.5px;
    color: var(--sbc-text);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 7px 8px;
    outline: none;
    transition: border-color .15s, background .15s;
}
.sbc-table input[type="number"] { text-align: right; font-variant-numeric: tabular-nums; }
.sbc-table input:hover { border-color: var(--sbc-line); }
.sbc-table input:focus {
    border-color: var(--sbc-blue-2);
    background: color-mix(in srgb, var(--sbc-blue-2) 7%, transparent);
}
.sbc-table input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--sbc-blue); cursor: pointer; }
.sbc-col-sub b { font-size: 14px; font-weight: 800; font-variant-numeric: tabular-nums; }
.sbc-blind {
    font-style: normal;
    color: var(--sbc-muted);
    background: var(--sbc-soft);
    border-radius: 6px;
    padding: 2px 12px;
    font-weight: 800;
}
.sbc-del {
    font: inherit;
    font-size: 12px;
    color: var(--sbc-muted);
    background: transparent;
    border: 0;
    cursor: pointer;
    padding: 4px 7px;
    border-radius: 7px;
    transition: color .15s, background .15s;
}
.sbc-del:hover { color: #dc2626; background: rgba(220, 38, 38, .09); }
.sbc-footnote {
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--sbc-muted);
}

/* ---------- 预算面板 ---------- */
.sbc-side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 84px; }
.sbc-budget-card,
.sbc-tip-card {
    background: var(--sbc-card);
    border: 1px solid var(--sbc-line);
    border-radius: 18px;
    padding: 20px;
    box-shadow: var(--sbc-shadow);
}
.sbc-budget-card h2, .sbc-tip-card h2 { font-size: 16px; font-weight: 800; margin: 0 0 14px; }
.sbc-budget-input {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--sbc-soft);
    border: 1.5px solid var(--sbc-line);
    border-radius: 14px;
    padding: 10px 16px;
    margin-bottom: 16px;
}
.sbc-budget-input span { font-size: 20px; font-weight: 900; color: var(--sbc-blue); }
.sbc-budget-input input {
    flex: 1;
    min-width: 0;
    font: inherit;
    font-size: 24px;
    font-weight: 900;
    color: var(--sbc-text);
    background: transparent;
    border: 0;
    outline: none;
    font-variant-numeric: tabular-nums;
}
.sbc-usage-bar {
    height: 14px;
    border-radius: 999px;
    background: var(--sbc-soft);
    overflow: hidden;
}
.sbc-usage-bar i {
    display: block;
    height: 100%;
    width: 0;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--sbc-blue-2), var(--sbc-blue));
    transition: width .35s ease;
}
.sbc-usage-bar i.is-warn { background: linear-gradient(90deg, var(--sbc-sun), #f59e0b); }
.sbc-usage-bar i.is-over { background: linear-gradient(90deg, #fb923c, #ef4444); }
.sbc-usage-text { margin: 8px 0 0; font-size: 12.5px; color: var(--sbc-muted); }

.sbc-total {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-top: 14px;
    padding: 14px 16px;
    background: linear-gradient(135deg, color-mix(in srgb, var(--sbc-blue) 10%, transparent), color-mix(in srgb, var(--sbc-blue-2) 12%, transparent));
    border-radius: 14px;
}
.sbc-total-k { font-size: 13px; font-weight: 700; color: var(--sbc-muted); }
.sbc-total-v { font-size: 26px; font-weight: 900; font-variant-numeric: tabular-nums; }

.sbc-practice-total {
    margin-top: 14px;
    padding: 14px 16px;
    background: var(--sbc-soft);
    border: 1.5px dashed var(--sbc-sun);
    border-radius: 14px;
}
.sbc-practice-total p { margin: 0 0 6px; font-size: 15px; font-weight: 800; }
.sbc-practice-total span { display: block; font-size: 13px; line-height: 1.75; color: var(--sbc-muted); }
.sbc-reveal {
    margin-top: 12px;
    width: 100%;
    font: inherit;
    font-size: 14.5px;
    font-weight: 800;
    color: var(--sbc-text);
    background: var(--sbc-sun);
    border: 0;
    border-radius: 999px;
    padding: 11px;
    cursor: pointer;
    transition: transform .15s;
}
.sbc-reveal:hover { transform: translateY(-1px); }

.sbc-verdict {
    margin-top: 14px;
    border-radius: 14px;
    padding: 12px 15px;
    font-size: 13.5px;
    line-height: 1.75;
}
.sbc-verdict b { font-variant-numeric: tabular-nums; }
.sbc-verdict.is-ok {
    background: rgba(22, 163, 74, .10);
    border: 1px solid rgba(22, 163, 74, .30);
    color: #15803d;
}
.sbc-verdict.is-over {
    background: rgba(239, 68, 68, .09);
    border: 1px solid rgba(239, 68, 68, .30);
    color: #b91c1c;
}
:root[data-theme="dark"] .sbc-verdict.is-ok { color: #4ade80; }
:root[data-theme="dark"] .sbc-verdict.is-over { color: #f87171; }

.sbc-tip-card ul { margin: 0; padding-left: 20px; display: grid; gap: 9px; }
.sbc-tip-card li { font-size: 13.5px; line-height: 1.8; color: var(--sbc-muted); }
.sbc-tip-card li b { color: var(--sbc-text); }
.sbc-tip-card li em { font-style: normal; font-weight: 700; color: var(--sbc-blue); }

/* ---------- 底部：口径说明表（neo 体系） ---------- */
.neo-note-table { width: 100%; border-collapse: collapse; }
.neo-note-table th,
.neo-note-table td {
    text-align: left;
    padding: 11px 14px;
    border-bottom: 1px solid color-mix(in srgb, var(--sbc-line) 70%, transparent);
    font-size: 13.5px;
    line-height: 1.75;
    vertical-align: top;
}
.neo-note-table th {
    width: 92px;
    font-weight: 800;
    color: var(--sbc-blue);
    white-space: nowrap;
}
.neo-note-table td { color: var(--sbc-text); }
.neo-note-table td b { color: var(--sbc-blue); }
.neo-usage { margin: 0; padding-left: 22px; display: grid; gap: 6px; }
.neo-usage li { font-size: 14px; line-height: 1.9; color: var(--sbc-muted); }
.neo-usage li b { color: var(--sbc-text); }

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
    .sbc-layout { grid-template-columns: 1fr; }
    .sbc-side { position: static; }
}
@media (max-width: 560px) {
    .sbc-table { min-width: 540px; }
}

/* ---------- 打印：清单 + 合计 ---------- */
@media print {
    body * { visibility: hidden; }
    .sbc-list-card, .sbc-list-card * { visibility: visible; }
    .sbc-list-card {
        position: absolute;
        inset: 0 auto auto 0;
        width: 100%;
        box-shadow: none;
    }
    .sbc-list-tools, .sbc-col-del { display: none; }
    .sbc-table input { border: 0; }
}