/* ============================================
   SC eSIM Plan Selector v2.1
   Single 「方案」attribute + Tab/Card UI
   ============================================ */

:root {
    --sc-plan-primary: #2563eb;
    --sc-plan-primary-light: #eff6ff;
    --sc-plan-primary-border: #93bbfd;
    --sc-plan-text: #1e293b;
    --sc-plan-text-muted: #64748b;
    --sc-plan-bg: #f8fafc;
    --sc-plan-card-bg: #ffffff;
    --sc-plan-border: #e2e8f0;
    --sc-plan-radius: 12px;
    --sc-plan-radius-sm: 8px;
    --sc-plan-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --sc-plan-shadow-hover: 0 4px 12px rgba(37, 99, 235, 0.12), 0 2px 4px rgba(0, 0, 0, 0.04);
    --sc-plan-shadow-active: 0 0 0 2px var(--sc-plan-primary);
    --sc-plan-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- 隱藏原生下拉選單（DOM 保留給 WooCommerce JS） ---- */
.sc-plan-selector ~ .variations,
.sc-plan-selector ~ .single_variation_wrap .woocommerce-variation {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    padding: 0 !important;
    margin: -1px !important;
}

.sc-plan-selector ~ .single_variation_wrap .woocommerce-variation-add-to-cart {
    position: static !important;
    width: auto !important;
    height: auto !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: normal !important;
    margin: 0 !important;
}

/* ---- Container ---- */
.sc-plan-selector {
    margin: 0 0 1.5em;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* ---- Tabs ---- */
.sc-plan-tabs {
    display: flex;
    gap: 0;
    background: var(--sc-plan-bg);
    border-radius: var(--sc-plan-radius);
    padding: 4px;
    margin-bottom: 1.25em;
    border: 1px solid var(--sc-plan-border);
}

.sc-plan-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: 2px solid transparent;
    border-radius: var(--sc-plan-radius-sm);
    background: transparent;
    color: var(--sc-plan-text-muted);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--sc-plan-transition);
    line-height: 1.2;
    white-space: nowrap;
}

.sc-plan-tab:hover {
    color: var(--sc-plan-text);
    background: rgba(255, 255, 255, 0.6);
}

.sc-plan-tab.is-active {
    background: var(--sc-plan-card-bg);
    color: var(--sc-plan-primary);
    border-color: var(--sc-plan-primary);
    box-shadow: var(--sc-plan-shadow);
}

.sc-plan-tab__icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.sc-plan-tab__icon svg { width: 18px; height: 18px; }
.sc-plan-tab__label { letter-spacing: 0.01em; }

/* ---- Panels ---- */
.sc-plan-panel {
    display: none;
    animation: scPlanFadeIn 0.25s ease-out;
}

.sc-plan-panel.is-active { display: block; }

@keyframes scPlanFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Cards Grid ---- */
.sc-plan-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

@media (max-width: 600px) {
    .sc-plan-cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 380px) {
    .sc-plan-cards { grid-template-columns: 1fr; }
}

/* ---- Card ---- */
.sc-plan-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 20px 12px;
    background: var(--sc-plan-card-bg);
    border: 2px solid var(--sc-plan-border);
    border-radius: var(--sc-plan-radius);
    cursor: pointer;
    transition: all var(--sc-plan-transition);
    box-shadow: var(--sc-plan-shadow);
    text-align: center;
    min-height: 90px;
    -webkit-appearance: none;
    appearance: none;
    font-family: inherit;
    outline: none;
}

.sc-plan-card:hover:not(.is-disabled) {
    border-color: var(--sc-plan-primary-border);
    box-shadow: var(--sc-plan-shadow-hover);
    transform: translateY(-1px);
}

.sc-plan-card:focus-visible {
    border-color: var(--sc-plan-primary);
    box-shadow: var(--sc-plan-shadow-active);
}

.sc-plan-card.is-selected {
    border-color: var(--sc-plan-primary);
    background: var(--sc-plan-primary-light);
    box-shadow: var(--sc-plan-shadow-active);
}

.sc-plan-card.is-selected .sc-plan-card__detail,
.sc-plan-card.is-selected .sc-plan-card__price {
    color: var(--sc-plan-primary);
}

.sc-plan-card.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    background: var(--sc-plan-bg);
}

.sc-plan-card__detail {
    font-size: 14px;
    font-weight: 600;
    color: var(--sc-plan-text);
    line-height: 1.35;
    transition: color var(--sc-plan-transition);
}

.sc-plan-card__price {
    font-size: 18px;
    font-weight: 700;
    color: var(--sc-plan-text);
    letter-spacing: -0.02em;
    transition: color var(--sc-plan-transition);
}

.sc-plan-card__check {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--sc-plan-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--sc-plan-transition);
}

.sc-plan-card__check svg { width: 14px; height: 14px; }

.sc-plan-card.is-selected .sc-plan-card__check {
    opacity: 1;
    transform: scale(1);
}

/* ---- 加入購物車 ---- */
.sc-plan-selector ~ .single_variation_wrap .woocommerce-variation-add-to-cart {
    padding-top: 0.5em;
}

.sc-plan-selector ~ .single_variation_wrap .woocommerce-variation-add-to-cart .quantity {
    margin-right: 12px;
}

.sc-plan-selector ~ .variations .reset_variations {
    display: none !important;
}