/**
 * 收銀台 — 藍白清風主題（主色 #25aae2）
 */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --vna-primary: #25aae2;
    --vna-primary-dark: #1889bd;
    --vna-primary-soft: rgba(37, 170, 226, 0.14);
    --vna-surface: rgba(255, 255, 255, 0.94);
    --vna-text: #1e3a4f;
    --vna-text-muted: #5a7a8f;
    --vna-accent: #e65100;
}

body {
    font-family: 'Segoe UI', 'Microsoft JhengHei', -apple-system, sans-serif;
    background: linear-gradient(165deg, #f7fcfe 0%, #e8f5fb 45%, #d4eef8 100%);
    min-height: 100vh;
    padding: 20px;
    animation: fadeIn 0.5s ease-in;
    color: var(--vna-text);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.container {
    max-width: 500px;
    margin: 0 auto;
    animation: fadeInUp 0.45s ease-out;
}

/* 收银台頂部小標題卡 */
.cashier-banner {
    padding: 14px 20px;
    margin-bottom: 12px;
    text-align: center;
}
.cashier-banner-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--vna-primary-dark);
    letter-spacing: 0.04em;
    text-align: center;
    width: 100%;
    display: block;
}

.card {
    background: var(--vna-surface);
    backdrop-filter: blur(12px);
    border-radius: 18px;
    padding: 18px;
    margin-bottom: 18px;
    box-shadow: 0 10px 36px rgba(37, 170, 226, 0.12), 0 2px 8px rgba(30, 58, 79, 0.06);
    border: 1px solid rgba(37, 170, 226, 0.18);
}

/* 金額 */
.amount-section {
    text-align: center;
    padding: 5px 0;
    border-top: 1px solid var(--vna-primary-soft);
    border-bottom: 1px solid var(--vna-primary-soft);
    margin: 5px 0 5px;
}
.amount-label { color: var(--vna-text-muted); font-size: 0.9rem; }
.amount-row {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: baseline;
    margin-top: 10px;
    width: 100%;
}
.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--vna-primary);
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.8);
    text-align: center;
    font-variant-numeric: tabular-nums;
}
.currency {
    position: absolute;
    right: 20px;
    bottom: 0.5rem;
    color: var(--vna-primary-dark);
    font-size: 1.25rem;
    font-weight: 700;
}

.order-no { text-align: center; color: var(--vna-text-muted); font-size: 0.85rem; margin-bottom: 10px; }

.section-title {
    color: var(--vna-primary-dark);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 12px;
}

/* 支付方式 tab */
.type-tabs { display: flex; gap: 10px; margin-bottom: 15px; }
.type-tab {
    flex: 1;
    text-align: center;
    padding: 10px;
    border-radius: 10px;
    border: 2px solid var(--vna-primary-soft);
    background: rgba(255, 255, 255, 0.7);
    color: var(--vna-text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
}
.type-tab.active {
    background: linear-gradient(135deg, var(--vna-primary), var(--vna-primary-dark));
    border-color: transparent;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(37, 170, 226, 0.35);
}

/* 銀行列表 */
.bank-list { display: flex; flex-wrap: wrap; gap: 8px; }
.bank-item {
    padding: 8px 14px;
    border-radius: 8px;
    border: 2px solid rgba(37, 170, 226, 0.28);
    background: rgba(255, 255, 255, 0.75);
    color: var(--vna-text);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    user-select: none;
}
.bank-item:hover { border-color: var(--vna-primary); color: var(--vna-primary-dark); }
.bank-item.active {
    background: linear-gradient(135deg, rgba(37, 170, 226, 0.18), rgba(37, 170, 226, 0.08));
    border-color: var(--vna-primary);
    color: var(--vna-primary-dark);
    font-weight: 600;
}

.err-hint { color: #c62828; font-size: 0.85rem; margin-top: 8px; display: none; }

/* 按鈕 */
.btn {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    background: linear-gradient(135deg, var(--vna-primary), var(--vna-primary-dark));
    color: #fff;
    box-shadow: 0 6px 20px rgba(37, 170, 226, 0.38);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(37, 170, 226, 0.45); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.58; cursor: not-allowed; transform: none; }
.btn-link {
    background: transparent;
    box-shadow: none;
    color: var(--vna-text-muted);
    font-size: 0.9rem;
    padding: 10px;
    margin-top: 5px;
    text-decoration: underline;
}
.btn-link:hover { box-shadow: none; color: var(--vna-primary-dark); }

/* 資訊行 */
.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 0;
    color: var(--vna-text);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--vna-primary-soft);
}
.info-item:last-child { border-bottom: none; }
.info-label { color: var(--vna-text-muted); white-space: nowrap; margin-right: 10px; }
.info-value { font-weight: 600; word-break: break-all; text-align: right; }
.info-value.highlight { color: var(--vna-accent); }

.copy-btn {
    background: rgba(37, 170, 226, 0.12);
    border: 1px solid rgba(37, 170, 226, 0.35);
    color: var(--vna-primary-dark);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.78rem;
    cursor: pointer;
    margin-left: 8px;
    white-space: nowrap;
    flex-shrink: 0;
}
.copy-btn:hover { background: rgba(37, 170, 226, 0.22); }

.qr-section { text-align: center; margin: 10px 0; }
.qr-img { max-width: 160px; background: #fff; padding: 8px; border-radius: 12px; box-shadow: 0 4px 16px rgba(37, 170, 226, 0.15); }

/* 警告框 */
.warning-box {
    background: rgba(255, 243, 224, 0.95);
    border: 1px solid rgba(230, 81, 0, 0.35);
    border-radius: 10px;
    padding: 14px;
    margin-top: 15px;
}
.warning-title { color: #bf360c; font-weight: 600; margin-bottom: 8px; font-size: 0.95rem; }
.warning-item {
    color: #4e342e;
    padding: 4px 0 4px 18px;
    position: relative;
    font-size: 0.88rem;
}
.warning-item:before { content: "•"; position: absolute; left: 5px; font-weight: 700; color: #e65100; }

/* 步驟 */
.steps { margin: 5px 0; }
.step { display: flex; align-items: flex-start; margin-bottom: 12px; color: var(--vna-text); font-size: 0.9rem; }
.step-num {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--vna-primary), var(--vna-primary-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    margin-right: 12px;
    flex-shrink: 0;
}

/* 成功卡片 */
.success-icon { text-align: center; font-size: 3.5rem; margin-bottom: 15px; }
.success-title { text-align: center; font-size: 1.6rem; font-weight: 700; color: var(--vna-primary-dark); margin-bottom: 10px; }
.success-msg { text-align: center; color: var(--vna-text-muted); font-size: 0.95rem; line-height: 1.6; }

/* Toast — 藍白清風：白底、主色陰影與邊框，錯誤用柔和紅系而非整塊深紅漸層 */
.message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 18px 32px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 12px 40px rgba(37, 170, 226, 0.12), 0 4px 16px rgba(30, 58, 79, 0.06);
    z-index: 1000;
    display: none;
    font-weight: 600;
    max-width: 80vw;
    text-align: center;
    line-height: 1.5;
    border: 1px solid var(--vna-primary-soft);
    color: var(--vna-text);
}
.message.success {
    background: linear-gradient(180deg, #f5fcfe 0%, #eaf6fb 100%);
    color: #0d5c2e;
    border-color: rgba(37, 170, 226, 0.35);
    box-shadow: 0 12px 36px rgba(37, 170, 226, 0.16), 0 4px 14px rgba(46, 125, 50, 0.08);
}
.message.error {
    background: linear-gradient(180deg, #ffffff 0%, #fff9f8 100%);
    color: #b71c1c;
    border-color: rgba(229, 115, 115, 0.5);
    box-shadow: 0 12px 36px rgba(37, 170, 226, 0.1), 0 6px 18px rgba(183, 28, 28, 0.07);
}

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

#qr-area .section-title { margin-top: 15px; }
#qr-canvas {
    display: inline-block;
    background: #fff;
    padding: 10px;
    border-radius: 12px;
    box-shadow: 0 4px 18px rgba(37, 170, 226, 0.18);
    border: 1px solid var(--vna-primary-soft);
}

.unit-label { color: var(--vna-text-muted); font-weight: normal; }
.order-highlight { color: var(--vna-accent); font-weight: 700; }