/* /billing 頁面樣式（方案介紹 + FAQ；Step 1） */

[x-cloak] { display: none !important; }

/* ===== Hero 標題 ===== */

.billing-hero {
    padding: 80px 24px 56px;
    text-align: center;
    max-width: 1200px;
    margin: 0 auto;
}
.billing-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--c-text-strong);
    letter-spacing: -0.02em;
    margin: 0 0 12px;
}
.billing-sub {
    color: var(--c-text-muted);
    font-size: 16px;
    margin: 0 auto 48px;
    max-width: 560px;
    line-height: 1.7;
}

/* ===== 方案卡 ===== */

.billing-plans {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    max-width: 880px;
    margin: 0 auto 32px;
}

.billing-plan {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: 18px;
    padding: 36px 32px;
    text-align: center;
    box-shadow: var(--c-shadow-md);
    display: flex;
    flex-direction: column;
    position: relative;
}
/* 訂閱方案卡：固定藍漸層配色，不隨主題變（保持品牌視覺一致） */
.billing-plan-pro {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #38bdf8 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.25);
}

.billing-plan-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--c-surface-2);
    color: var(--c-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}
.billing-plan-icon-light {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

.billing-plan-title {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 6px;
    color: var(--c-text-strong);
}
.billing-plan-pro .billing-plan-title { color: #fff; }
.billing-plan-tag {
    color: var(--c-text-muted);
    font-size: 14px;
    margin: 0 0 28px;
}
.billing-plan-pro .billing-plan-tag { color: rgba(255, 255, 255, 0.85); }

.billing-plan-price {
    margin: 0 0 28px;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}
.billing-plan-amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--c-text-strong);
    letter-spacing: -0.02em;
}
.billing-plan-pro .billing-plan-amount { color: #fff; }
.billing-plan-cycle {
    font-size: 16px;
    color: var(--c-text-subtle);
    font-weight: 500;
}
.billing-plan-pro .billing-plan-cycle { color: rgba(255, 255, 255, 0.85); }

/* 推薦方案右上 badge */
.billing-plan-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}

/* 方案功能清單 */
.billing-plan-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
    text-align: left;
    flex: 1;
}
.billing-plan-features li {
    display: flex;
    gap: 12px;
    padding: 10px 0;
    align-items: flex-start;
}
.billing-feat-icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    background: var(--c-surface-2);
    color: var(--c-text-subtle);
    margin-top: 2px;
}
.billing-feat-on .billing-feat-icon { background: rgba(22, 163, 74, 0.16); color: #16a34a; }
.billing-feat-off .billing-feat-icon { background: var(--c-surface-2); color: var(--c-text-subtle); }
.billing-feat-off { opacity: 0.6; }
.billing-plan-features li strong {
    display: block;
    color: var(--c-text-strong);
    font-size: 15px;
    margin-bottom: 2px;
}
.billing-plan-features li span {
    color: var(--c-text-muted);
    font-size: 13px;
}

/* 訂閱方案卡的 features：白字 + 半透明圈圈 */
.billing-plan-features-pro li strong { color: #fff; }
.billing-plan-features-pro li span { color: rgba(255, 255, 255, 0.82); }
.billing-plan-features-pro .billing-feat-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

/* 方案卡按鈕 */
.btn-billing-free {
    background: var(--c-surface-2);
    color: var(--c-text-muted);
    border-color: transparent;
    padding: 14px 16px;
    font-weight: 600;
    font-size: 15px;
    border-radius: 12px;
}
.btn-billing-free:hover { background: var(--c-surface-3); color: var(--c-text-strong); }
.btn-billing-pro {
    background: #fff;
    color: #2563eb;
    border-color: transparent;
    padding: 14px 16px;
    font-weight: 700;
    font-size: 15px;
    border-radius: 12px;
}
.btn-billing-pro:hover:not(:disabled) { background: #f8fafc; }
.btn-billing-pro:disabled {
    background: rgba(255, 255, 255, 0.7);
    color: #2563eb;
    cursor: not-allowed;
    opacity: 0.7;
}

.billing-meta {
    text-align: center;
    color: var(--c-text-muted);
    font-size: 14px;
    margin: 8px 0;
}

/* ===== FAQ ===== */

.billing-faq {
    background: var(--c-surface-2);
    padding: 80px 24px;
}
.billing-faq-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    color: var(--c-text-strong);
    margin: 0 0 40px;
}
.billing-faq-list {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.billing-faq-item {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    padding: 24px 28px;
}
.billing-faq-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--c-text-strong);
    margin: 0 0 8px;
}
.billing-faq-item p {
    color: var(--c-text-muted);
    font-size: 14px;
    line-height: 1.7;
    margin: 0;
}

/* ===== 響應式 ===== */

@media (max-width: 768px) {
    .billing-hero { padding: 56px 20px 40px; }
    .billing-title { font-size: 28px; }
    .billing-plans { grid-template-columns: 1fr; max-width: 460px; }
    .billing-plan { padding: 28px 24px; }
    .billing-plan-amount { font-size: 36px; }
    .billing-faq { padding: 56px 20px; }
    .billing-faq-title { font-size: 24px; }
    .billing-faq-item { padding: 20px; }
}