*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: #fafafa;
    font-family: 'Noto Sans JP', sans-serif;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

body.modal-open {
    overflow: hidden;
}

/* ── Main ── */

main {
    padding: 48px 24px 140px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ── Membership Card ── */

.membership-card {
    width: 100%;
    max-width: 360px;
    aspect-ratio: 85.6 / 54;
    background: linear-gradient(135deg, #81c784 0%, #388e3c 55%, #1b5e20 100%);
    box-shadow:
        0 10px 36px rgba(56, 142, 60, 0.35),
        0 2px 8px rgba(0, 0, 0, 0.06);
    border-radius: 20px;
    padding: 22px 24px 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: #fff;
    position: relative;
    overflow: hidden;
    transition: background 0.6s ease, box-shadow 0.6s ease;
}

/* ランク別カードカラー */
.membership-card--green {
    background: linear-gradient(135deg, #81c784 0%, #388e3c 55%, #1b5e20 100%);
    box-shadow: 0 10px 36px rgba(56, 142, 60, 0.35), 0 2px 8px rgba(0, 0, 0, 0.06);
}

.membership-card--bronze {
    background: linear-gradient(135deg, #d4956a 0%, #b5651d 55%, #7a3f0b 100%);
    box-shadow: 0 10px 36px rgba(181, 101, 29, 0.38), 0 2px 8px rgba(0, 0, 0, 0.06);
}

.membership-card--silver {
    background: linear-gradient(135deg, #d8d8d8 0%, #9e9e9e 55%, #616161 100%);
    box-shadow: 0 10px 36px rgba(100, 100, 100, 0.32), 0 2px 8px rgba(0, 0, 0, 0.06);
}

.membership-card--gold {
    background: linear-gradient(135deg, #ffe082 0%, #ffb300 55%, #e65100 100%);
    box-shadow: 0 10px 36px rgba(255, 179, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.06);
}

.membership-card::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    pointer-events: none;
}

.membership-card::after {
    content: '';
    position: absolute;
    bottom: -70px;
    right: 30px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
    pointer-events: none;
}

.card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.card-logo {
    height: 20px;
    width: auto;
    opacity: 0.75;
    filter: brightness(0) invert(1);
}

.card-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.18em;
    opacity: 0.8;
    font-family: 'Roboto', sans-serif;
}

.card-center {
    flex: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
    position: relative;
    z-index: 1;
}

.card-point-area {
    flex: 1;
    min-width: 0;
}

.card-rank-area {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    flex-shrink: 0;
}

.card-rank-badge {
    font-family: 'Roboto', sans-serif;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.14em;
    color: rgba(255, 255, 255, 0.95);
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.35);
    padding: 4px 12px;
    border-radius: 20px;
    white-space: nowrap;
}

.card-rank-next {
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

/* ── Rank Progress Chart ── */

.rank-progress-chart {
    width: 60px;
    height: 60px;
}

.rank-progress-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.2);
    stroke-width: 3;
}

.rank-progress-fill {
    fill: none;
    stroke: rgba(255, 255, 255, 0.85);
    stroke-width: 3;
    stroke-linecap: round;
}

.rank-chart-label {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 7.5px;
    fill: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

.rank-chart-value {
    font-family: 'Roboto', sans-serif;
    font-size: 11px;
    font-weight: 700;
    fill: rgba(255, 255, 255, 0.95);
}

.point-label {
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
    margin-bottom: 2px;
}

#point-card-balance {
    font-family: 'Roboto', sans-serif;
    font-size: 44px;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.02em;
}

#point-card-balance small {
    font-size: 16px;
    font-weight: 400;
    margin-left: 4px;
    opacity: 0.8;
    letter-spacing: 0;
}

#point-card-get {
    font-size: 13px;
    font-weight: 700;
    margin-top: 8px;
    visibility: hidden;
    display: inline-block;
    background: rgba(255, 255, 255, 0.25);
    padding: 3px 12px;
    border-radius: 20px;
    width: fit-content;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    position: relative;
    z-index: 1;
}

#point-card-name {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px;
    font-weight: 700;
    opacity: 0.8;
    letter-spacing: 0.04em;
    max-width: 55%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#point-card-number {
    font-family: 'Roboto', sans-serif;
    font-size: 11px;
    opacity: 0.7;
    letter-spacing: 0.05em;
}

/* ── Coupons Section ── */

.coupons-section {
    width: 100%;
    max-width: 360px;
    margin-top: 28px;
}

.section-title {
    font-size: 13px;
    font-weight: 700;
    color: #999;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.coupon-empty {
    font-size: 14px;
    color: #bbb;
    text-align: center;
    padding: 24px 0;
}

/* ── Coupon Card (list) ── */

@keyframes coupon-pop {
    0%   { transform: scale(0.93); opacity: 0; }
    55%  { transform: scale(1.03); opacity: 1; }
    100% { transform: scale(1); }
}

.coupon-card {
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    padding: 14px 16px;
    margin-bottom: 10px;
    border-left: 4px solid #e87272;
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    cursor: pointer;
    overflow: hidden;
    transition: box-shadow 0.15s ease;
    -webkit-tap-highlight-color: transparent;
}

.coupon-card:active {
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.coupon-card--used {
    border-left-color: #ddd;
    opacity: 0.55;
}

.coupon-card--expired {
    border-left-color: #ddd;
    opacity: 0.55;
}

.coupon-card--new {
    animation: coupon-pop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-left-color: #f5c518;
}

.coupon-badge {
    position: absolute;
    top: 0;
    right: 0;
    font-size: 10px;
    font-weight: 900;
    padding: 3px 10px;
    border-radius: 0 14px 0 10px;
    letter-spacing: 0.04em;
}

.coupon-badge--new {
    background: #f5c518;
    color: #333;
}

.coupon-badge--used {
    background: #eee;
    color: #999;
}

.coupon-card-thumb {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.coupon-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.coupon-card-body {
    flex: 1;
    min-width: 0;
}

.coupon-title {
    font-size: 13px;
    font-weight: 700;
    color: #333;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.coupon-card--used .coupon-title,
.coupon-card--expired .coupon-title {
    color: #aaa;
}

.coupon-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.coupon-card-discount {
    font-family: 'Roboto', sans-serif;
    font-size: 15px;
    font-weight: 700;
    color: #e87272;
}

.coupon-card--used .coupon-card-discount,
.coupon-card--expired .coupon-card-discount {
    color: #bbb;
}

.coupon-card-expiry {
    font-size: 11px;
    color: #bbb;
}

.coupon-card-expiry--expired {
    color: #e87272;
}

.coupon-card-arrow {
    font-size: 20px;
    color: #ddd;
    flex-shrink: 0;
    line-height: 1;
}

/* ── Coupon Tabs ── */

.coupon-tabs {
    width: 100%;
    max-width: 360px;
    margin-top: 28px;
}

.coupon-tab-header {
    display: flex;
    background: #f0f0f0;
    border-radius: 10px;
    padding: 3px;
    margin-bottom: 16px;
}

.coupon-tab-btn {
    flex: 1;
    padding: 8px 4px;
    border: none;
    background: transparent;
    border-radius: 8px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px;
    font-weight: 700;
    color: #999;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
}

.coupon-tab-btn.is-active {
    background: #fff;
    color: #333;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

/* ── Reward Card (ポイントを使う) ── */

.reward-card {
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
    padding: 14px 16px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.reward-card-thumb {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.reward-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.reward-card-body {
    flex: 1;
    min-width: 0;
}

.reward-card-title {
    font-size: 14px;
    font-weight: 700;
    color: #333;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.reward-card-cost {
    font-size: 13px;
    color: #888;
}

.reward-card-cost-value {
    font-family: 'Roboto', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: #388e3c;
}

.reward-exchange-btn {
    flex-shrink: 0;
    background: linear-gradient(135deg, #66bb6a, #388e3c);
    color: #fff;
    border: none;
    border-radius: 20px;
    padding: 8px 16px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    -webkit-appearance: none;
    transition: opacity 0.15s ease;
}

.reward-exchange-btn:active {
    opacity: 0.75;
}

.reward-exchange-btn--disabled {
    background: #e0e0e0;
    color: #aaa;
    cursor: default;
}

/* ── Loading Overlay ── */

.loading-overlay {
    position: fixed;
    inset: 0;
    background: #fafafa;
    z-index: 300;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    transition: opacity 0.4s ease;
}

.loading-overlay.is-hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-logo {
    height: 36px;
    width: auto;
    opacity: 0.65;
}

.loading-spinner {
    width: 28px;
    height: 28px;
    border: 2.5px solid #e0e0e0;
    border-top-color: #388e3c;
    border-radius: 50%;
    animation: loading-spin 0.75s linear infinite;
}

@keyframes loading-spin {
    to { transform: rotate(360deg); }
}

/* ── Point Toast ── */

.point-toast {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 199;
    pointer-events: none;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.point-toast.is-visible {
    transform: translateY(0);
}

.point-toast-inner {
    background: linear-gradient(135deg, #66bb6a, #2e7d32);
    color: #fff;
    padding: 16px 24px 14px;
    font-size: 16px;
    font-weight: 700;
    text-align: center;
    box-shadow: 0 4px 20px rgba(46, 125, 50, 0.4);
    border-radius: 0 0 18px 18px;
}

/* ── Welcome Toast ── */

.welcome-toast {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 201;
    pointer-events: none;
    transform: translateY(-100%);
    transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.welcome-toast.is-visible {
    transform: translateY(0);
}

.welcome-toast-inner {
    background: linear-gradient(135deg, #66bb6a, #2e7d32);
    color: #fff;
    padding: 16px 24px 14px;
    font-size: 14px;
    font-weight: 700;
    text-align: center;
    box-shadow: 0 4px 20px rgba(46, 125, 50, 0.4);
    border-radius: 0 0 18px 18px;
}

/* ── Error Toast ── */

.error-toast {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 202;
    pointer-events: none;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.error-toast.is-visible {
    transform: translateY(0);
}

.error-toast-inner {
    background: linear-gradient(135deg, #ef9a9a, #c62828);
    color: #fff;
    padding: 16px 24px 14px;
    font-size: 14px;
    font-weight: 700;
    text-align: center;
    box-shadow: 0 4px 20px rgba(198, 40, 40, 0.4);
    border-radius: 0 0 18px 18px;
}

/* ── Coupon Toast ── */

.coupon-toast {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    pointer-events: none;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.coupon-toast.is-visible {
    transform: translateY(0);
}

.coupon-toast-inner {
    background: linear-gradient(135deg, #f5a8a3, #e87272);
    color: #fff;
    padding: 16px 24px 14px;
    font-size: 14px;
    font-weight: 700;
    text-align: center;
    box-shadow: 0 4px 20px rgba(232, 114, 114, 0.4);
    border-radius: 0 0 18px 18px;
}

/* ── Coupon Modal ── */

.coupon-modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: flex-end;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.coupon-modal.is-open {
    pointer-events: auto;
    opacity: 1;
}

.coupon-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}

.coupon-modal-sheet {
    position: relative;
    width: 100%;
    background: #fff;
    border-radius: 20px 20px 0 0;
    max-height: 88vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

.coupon-modal.is-open .coupon-modal-sheet {
    transform: translateY(0);
}

.coupon-modal-handle {
    width: 36px;
    height: 4px;
    background: #e0e0e0;
    border-radius: 2px;
    margin: 12px auto 0;
}

.coupon-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px 0;
}

.coupon-modal-title {
    font-size: 16px;
    font-weight: 700;
    color: #333;
    flex: 1;
    margin-right: 8px;
}

.coupon-modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: #f0f0f0;
    border-radius: 50%;
    font-size: 18px;
    color: #888;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    line-height: 1;
    -webkit-appearance: none;
}

.coupon-modal-body {
    padding: 20px 20px 4px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.coupon-modal-label {
    font-size: 11px;
    font-weight: 700;
    color: #999;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.coupon-modal-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 12px;
    object-fit: cover;
}

.coupon-modal-code-block {
    background: #fafafa;
    border-radius: 12px;
    padding: 14px 16px;
}

.coupon-modal-code-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.coupon-modal-code {
    font-family: 'Roboto', monospace;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #e87272;
    flex: 1;
}

.coupon-copy-btn {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 12px;
    font-weight: 700;
    color: #e87272;
    background: #fff;
    border: 1.5px solid #e87272;
    border-radius: 16px;
    padding: 5px 16px;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    white-space: nowrap;
    flex-shrink: 0;
    -webkit-appearance: none;
}

.coupon-copy-btn--copied {
    background: #e87272;
    color: #fff;
}

.coupon-modal-desc-block {
    border-top: 1px solid #f0f0f0;
    padding-top: 16px;
}

.coupon-modal-desc {
    font-size: 13px;
    color: #555;
    line-height: 1.7;
}

.coupon-modal-expiry {
    font-size: 12px;
    color: #aaa;
    text-align: right;
    padding-bottom: 4px;
}

.coupon-modal-footer {
    padding: 16px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border-top: 1px solid #f0f0f0;
}

.coupon-modal-used-note {
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    color: #aaa;
    padding: 12px 0 4px;
}

.coupon-modal-store-btn {
    width: 100%;
    height: 52px;
    background: #e87272;
    color: #fff;
    border: none;
    border-radius: 26px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(232, 114, 114, 0.35);
    transition: opacity 0.15s ease;
    -webkit-appearance: none;
}

.coupon-modal-store-btn:disabled {
    opacity: 0.4;
    cursor: default;
    box-shadow: none;
}

.coupon-modal-mobile-btn {
    width: 100%;
    height: 52px;
    background: #fff;
    color: #e87272;
    border: 1.5px solid #e87272;
    border-radius: 26px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    -webkit-appearance: none;
}

.coupon-modal-mobile-btn:active {
    background: rgba(232, 114, 114, 0.06);
}

/* ── Sticky Button ── */

.sticky-button {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px 24px 36px;
    background: linear-gradient(to top, #fafafa 65%, rgba(250, 250, 250, 0));
}

.scan-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    max-width: 360px;
    height: 56px;
    margin: 0 auto;
    background: #e87272;
    color: #fff;
    border: none;
    border-radius: 28px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(232, 114, 114, 0.4);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    -webkit-appearance: none;
}

.scan-button .fa {
    font-size: 18px;
}

.scan-button:active {
    transform: translateY(1px);
    box-shadow: 0 3px 10px rgba(232, 114, 114, 0.3);
}