:root {
    --bg: #f6f1ea;
    --ink: #2c2a26;
    --accent: #5f6f52;
    --accent-soft: rgba(95, 111, 82, 0.12);
    --card: #fffdf8;
    --line: #d9d0c3;
    --alert: #8b3a3a;
    --radius: 12px;
    --tap: 2.75rem;
    --pad-x: 1rem;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: "Hiragino Mincho ProN", "Yu Mincho", "Hiragino Sans", "Yu Gothic", sans-serif;
    font-size: 16px;
    line-height: 1.55;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, var(--accent-soft), transparent 42%),
        linear-gradient(180deg, #faf6f0, var(--bg));
    min-height: 100vh;
    min-height: 100dvh;
    padding-bottom: calc(1rem + var(--safe-bottom));
}

a {
    color: var(--accent);
    text-decoration: none;
    -webkit-tap-highlight-color: rgba(95, 111, 82, 0.15);
}

.inner {
    width: min(720px, calc(100% - (var(--pad-x) * 2)));
    margin: 0 auto;
}

/* Header */
.site-header {
    padding: calc(1rem + env(safe-area-inset-top, 0px)) 0 1rem;
    border-bottom: 1px solid rgba(217, 208, 195, 0.55);
    background: rgba(250, 246, 240, 0.88);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 20;
}

.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: block;
    font-size: 1.35rem;
    letter-spacing: 0.08em;
    color: var(--ink);
    line-height: 1.2;
}

.header-auth {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem 0.75rem;
    font-size: 0.85rem;
}

.header-member {
    display: none;
    opacity: 0.75;
    font-size: 0.8rem;
}

.header-link {
    color: var(--accent);
    padding: 0.35rem 0.15rem;
    min-height: 2.25rem;
    display: inline-flex;
    align-items: center;
}

.header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.25rem;
    padding: 0.4rem 1.1rem;
    border: 1px solid var(--accent);
    border-radius: var(--radius);
    color: var(--accent);
    background: var(--card);
    font-size: 0.88rem;
    line-height: 1.2;
}

.site-main {
    padding: 0.85rem 0 1.5rem;
}

.page-title {
    font-size: 1.25rem;
    font-weight: normal;
    margin: 0.5rem 0 1rem;
    letter-spacing: 0.02em;
}

.lead {
    margin: 0 0 1rem;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Lists / cards / buttons */
.service-list,
.slot-list,
.auth-choice-list,
.reservation-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.7rem;
}

.service-section {
    margin-bottom: 1.5rem;
}

.service-section-title {
    margin: 0 0 0.35rem;
    font-size: 1.05rem;
    letter-spacing: 0.04em;
}

.service-section-help {
    margin: 0 0 0.75rem;
    font-size: 0.88rem;
    opacity: 0.7;
}

.service-card,
.slot-btn,
.btn {
    display: block;
    width: 100%;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem 1.05rem;
    color: var(--ink);
    min-height: var(--tap);
}

.service-card {
    transition: border-color 0.15s ease, background 0.15s ease;
}

.service-card .name {
    font-size: 1.08rem;
}

.service-title {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.25rem 0.55rem;
}

.service-title .course-name {
    font-size: 0.92em;
    opacity: 0.78;
    font-weight: 500;
}

.service-card .service-title .name {
    font-size: 1.08rem;
}

.service-card .service-title .course-name {
    font-size: 0.95rem;
}

@media (max-width: 480px) {
    .service-title {
        flex-direction: column;
        flex-wrap: nowrap;
        align-items: flex-start;
        gap: 0.12rem;
    }
}

.service-card .memo {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.88rem;
    line-height: 1.45;
    opacity: 0.78;
}

.service-card .meta {
    display: block;
    margin-top: 0.4rem;
    opacity: 0.72;
    font-size: 0.92rem;
}

.slot-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.55rem;
}

.slot-btn {
    text-align: center;
    padding: 0.85rem 0.35rem;
    font-size: 1rem;
    font-variant-numeric: tabular-nums;
}

.btn {
    cursor: pointer;
    text-align: center;
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    font: inherit;
    font-size: 1.05rem;
    padding: 0.95rem 1.1rem;
    -webkit-appearance: none;
    appearance: none;
}

.btn:disabled {
    opacity: 0.55;
}

.btn[hidden] {
    display: none !important;
}

.btn-cancel {
    margin-top: 0.85rem;
    background: transparent;
    color: var(--alert);
    border-color: var(--alert);
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border-color: var(--line);
}

.confirm-dialog {
    position: fixed;
    inset: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background: rgba(44, 42, 38, 0.45);
}

.confirm-dialog[hidden] {
    display: none;
}

.confirm-dialog-panel {
    width: min(22rem, 100%);
    padding: 1.25rem 1.15rem 1.15rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 12px 32px rgba(44, 42, 38, 0.18);
}

.confirm-dialog-panel > p {
    margin: 0 0 1.15rem;
    font-size: 1.05rem;
    text-align: center;
    line-height: 1.5;
}

.confirm-dialog-actions {
    display: grid;
    gap: 0.65rem;
}

.confirm-dialog-actions .btn-cancel {
    margin-top: 0;
}

/* Calendar */
.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.65rem;
}

.calendar-nav-label {
    margin: 0;
    font-size: 1.05rem;
    letter-spacing: 0.04em;
}

.calendar-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.75rem;
    min-height: 2.75rem;
    padding: 0.35rem 0.65rem;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--card);
    color: var(--ink);
    font-size: 0.9rem;
}

.calendar-nav-btn.is-disabled {
    opacity: 0.4;
    pointer-events: none;
    cursor: default;
}

.booking-calendar {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
    margin-bottom: 1.1rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.booking-calendar th,
.booking-calendar td {
    border: 1px solid var(--line);
    text-align: center;
    vertical-align: middle;
    padding: 0;
}

.booking-calendar th {
    padding: 0.55rem 0;
    font-weight: normal;
    background: var(--accent-soft);
    font-size: 0.78rem;
}

.booking-calendar th.is-sun {
    color: #c45c54;
}

.booking-calendar th.is-sat {
    color: #4a7ab5;
}

.booking-calendar td {
    height: 2.85rem;
}

.booking-calendar .day {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 2.85rem;
    color: var(--ink);
    font-size: 0.95rem;
    font-variant-numeric: tabular-nums;
}

.booking-calendar td.is-sun .day,
.booking-calendar td.is-holiday .day {
    color: #c45c54;
}

.booking-calendar td.is-selected.is-sun .day,
.booking-calendar td.is-selected.is-sun a.day,
.booking-calendar td.is-selected.is-holiday .day,
.booking-calendar td.is-selected.is-holiday a.day {
    color: #fff;
}

.booking-calendar .holiday-dot {
    position: absolute;
    right: 0.35rem;
    bottom: 0.3rem;
    width: 0.35rem;
    height: 0.35rem;
    border-radius: 50%;
    background: #c45c54;
}

.booking-calendar td.is-selected .holiday-dot {
    background: #fff;
}

.booking-calendar td.is-empty {
    background: rgba(0, 0, 0, 0.02);
}

.booking-calendar td.is-past .day,
.booking-calendar td.is-closed .day,
.booking-calendar td.is-unavailable .day {
    opacity: 0.35;
    cursor: default;
}

.booking-calendar td.is-closed,
.booking-calendar td.is-unavailable {
    background: rgba(0, 0, 0, 0.06);
}

.booking-calendar td.is-selected .day,
.booking-calendar td.is-selected a.day {
    background: var(--accent);
    color: #fff;
}

.slot-section { margin-top: 0.35rem; }

.slot-heading {
    font-size: 1.02rem;
    font-weight: normal;
    margin: 0 0 0.75rem;
}

.slot-empty {
    margin: 0;
    padding: 1rem 1.05rem 1.1rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.slot-empty-title {
    margin: 0 0 0.45rem;
    font-size: 1rem;
}

.slot-empty-text {
    margin: 0 0 0.95rem;
    font-size: 0.92rem;
    line-height: 1.6;
    opacity: 0.82;
}

.line-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    width: 100%;
    min-height: var(--tap);
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    background: #06c755;
    color: #fff;
    font-size: 1rem;
    line-height: 1.2;
}

.line-cta-icon {
    width: 1.35rem;
    height: 1.35rem;
    flex-shrink: 0;
}

.line-id {
    margin: 0.55rem 0 0;
    text-align: center;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    opacity: 0.7;
}

/* Forms */
.booking-form {
    display: grid;
    gap: 0.95rem;
    max-width: none;
    width: 100%;
}

.booking-form label {
    display: grid;
    gap: 0.4rem;
    font-size: 0.92rem;
}

.booking-form input,
.booking-form textarea {
    font: inherit;
    font-size: 16px; /* iOS zoom prevention */
    padding: 0.85rem 0.9rem;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #fff;
    width: 100%;
    min-height: var(--tap);
}

.booking-form textarea {
    min-height: 5.5rem;
    resize: vertical;
}

.booking-form input:focus,
.booking-form textarea:focus {
    outline: 2px solid rgba(95, 111, 82, 0.35);
    outline-offset: 1px;
    border-color: var(--accent);
}

.booking-form input[readonly] {
    background: #f3f4f1;
    color: #555;
    cursor: default;
}

.req {
    color: var(--alert);
}

.alert {
    color: var(--alert);
    margin: 0.75rem 0 0;
    font-size: 0.95rem;
}

.success {
    font-size: 1.15rem;
    margin: 0 0 1rem;
}

.summary {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
    margin: 0 0 1.1rem;
    padding: 0.95rem 1rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.summary dt {
    opacity: 0.65;
    font-size: 0.8rem;
    margin: 0;
}

.summary dd {
    margin: 0.15rem 0 0;
    font-size: 1.02rem;
}

.summary .memo {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.88rem;
    line-height: 1.45;
    opacity: 0.78;
}

.site-footer {
    padding: 1.5rem 0 calc(1.25rem + var(--safe-bottom));
    opacity: 0.65;
    font-size: 0.85rem;
    text-align: center;
}

.selected-service {
    margin: 0 0 1rem;
    padding: 0.95rem 1rem;
    background: rgba(255, 255, 255, 0.7);
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 0.98rem;
    line-height: 1.5;
}

.service-description {
    margin: -0.4rem 0 1rem;
    padding: 0 0.15rem;
    font-size: 0.9rem;
    line-height: 1.5;
    opacity: 0.8;
}

.auth-guest { background: rgba(255, 255, 255, 0.35); }

.back-link {
    margin-top: 1.15rem;
    font-size: 0.95rem;
    text-align: center;
}

.back-link a {
    display: inline-flex;
    align-items: center;
    min-height: 2.5rem;
}

.member-note,
.notice {
    margin: 0 0 1rem;
    padding: 0.85rem 0.95rem;
    background: var(--accent-soft);
    border-radius: 10px;
    font-size: 0.92rem;
    line-height: 1.55;
}

.email-change-steps {
    margin: 0 0 1rem;
    padding-left: 1.35rem;
    font-size: 0.92rem;
    line-height: 1.65;
}

.email-change-steps li {
    margin: 0.15rem 0;
}

.email-change-pending {
    margin: 0 0 1rem;
    padding: 0.85rem 0.95rem;
    border: 1px solid var(--line);
    border-left: 3px solid var(--accent, #5f6f52);
    border-radius: 10px;
    font-size: 0.92rem;
    line-height: 1.55;
}

.email-change-pending-title {
    margin: 0 0 0.35rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.email-change-pending p {
    margin: 0;
}

.email-change-pending-expires {
    margin-top: 0.45rem !important;
    font-size: 0.88rem;
    opacity: 0.85;
}

.login-prompt {
    margin: 0 0 1rem;
    font-size: 0.92rem;
}

.auth-help {
    margin-top: 1rem;
}

.auth-help a {
    color: inherit;
    text-decoration: underline;
}

.section-heading {
    font-size: 1.05rem;
    font-weight: normal;
    margin: 1.35rem 0 0.7rem;
}

.mypage-account .booking-form {
    margin-bottom: 0.5rem;
}

.mypage-account .section-heading:not(:first-of-type),
.mypage-account .account-delete .section-heading {
    margin-top: 2rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--line);
}

.reservation-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0.95rem 1rem;
}

.reservation-list {
    gap: 1.15rem;
}

.reservation-card .summary,
.reservation-summary {
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0;
}

.reservation-summary code {
    font-size: 0.85rem;
    word-break: break-all;
}

.reservation-card .btn-cancel,
.reservation-card .cancel-disabled {
    margin-top: 0.85rem;
}

.cancel-disabled {
    margin: 0.75rem 0 0;
    font-size: 0.9rem;
    color: var(--alert);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.review-card {
    margin: 2rem 0 0.25rem;
    padding: 1.05rem 1rem 1.15rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.review-card .section-heading {
    margin-top: 0;
}

.review-lead {
    margin: 0 0 0.85rem;
    font-size: 0.92rem;
}

.review-actions {
    display: grid;
    gap: 0.6rem;
}

.review-actions .btn {
    margin: 0;
}

#mypage-review-error {
    margin-top: 0.75rem;
}

.coupon-ticket {
    margin: 0.25rem 0 1.25rem;
    padding: 1.4rem 1.15rem 1.3rem;
    background: var(--card);
    border: 2px dashed #c4a35a;
    border-radius: 16px;
    text-align: center;
}

.coupon-brand {
    margin: 0;
    letter-spacing: 0.14em;
    font-size: 0.82rem;
    opacity: 0.72;
}

.coupon-heading {
    margin: 0.35rem 0 0.7rem;
    font-size: 1.15rem;
    font-weight: normal;
    letter-spacing: 0.06em;
}

.coupon-amount {
    margin: 0;
    font-size: 2.6rem;
    line-height: 1.1;
    letter-spacing: 0.04em;
    color: var(--accent);
}

.coupon-amount span {
    display: inline-block;
    margin-left: 0.15rem;
    font-size: 1.15rem;
    vertical-align: 0.35rem;
}

.coupon-scope,
.coupon-once {
    margin: 0.45rem 0 0;
    font-size: 0.95rem;
}

.coupon-once {
    font-weight: bold;
    letter-spacing: 0.08em;
}

.coupon-meta {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.35rem 0.9rem;
    margin: 1.1rem 0 0;
    padding: 0.85rem 0.2rem 0;
    border-top: 1px solid var(--line);
    text-align: left;
    font-size: 0.92rem;
}

.coupon-meta dt {
    margin: 0;
    opacity: 0.7;
}

.coupon-meta dd {
    margin: 0;
    font-variant-numeric: tabular-nums;
}

.coupon-hint {
    margin: 1.05rem 0 0;
    font-size: 0.92rem;
    line-height: 1.55;
}

.coupon-ticket .btn {
    margin-top: 1rem;
}

.coupon-ticket.is-used {
    border-style: solid;
    opacity: 0.88;
}

.coupon-used-badge {
    display: inline-block;
    margin: 0 0 0.55rem;
    padding: 0.2rem 0.7rem;
    border: 1px solid var(--alert);
    border-radius: 999px;
    color: var(--alert);
    font-size: 0.85rem;
    letter-spacing: 0.12em;
}

#coupon-redeem-error {
    margin-top: 0.75rem;
}

.empty-note { opacity: 0.7; }

.checkbox-label {
    display: flex !important;
    align-items: flex-start;
    gap: 0.55rem;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.2rem;
    width: 1.15rem;
    height: 1.15rem;
    min-height: 0;
}

.booking-notices {
    margin: 1.1rem 0;
    padding: 1rem 1.05rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.booking-notices-heading {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
    letter-spacing: 0.06em;
}

.booking-notices-lead {
    margin: 0 0 0.85rem;
    font-size: 0.92rem;
    line-height: 1.65;
}

.booking-notices-list {
    margin: 0 0 1rem;
    padding-left: 1.2rem;
    font-size: 0.9rem;
    line-height: 1.7;
}

.booking-notices-list li + li {
    margin-top: 0.55rem;
}

.booking-notices-agree {
    margin: 0;
    padding-top: 0.75rem;
    border-top: 1px solid var(--line);
    font-size: 0.92rem;
}

.account-fields {
    display: grid;
    gap: 0.9rem;
    padding: 0.9rem 1rem;
    background: var(--accent-soft);
    border-radius: 10px;
}

.register-offer {
    margin: 1.1rem 0;
    padding: 1rem 1.05rem;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.register-offer .section-heading {
    margin-top: 0;
}

.register-offer .booking-form {
    margin-top: 0.85rem;
}

.booking-step.complete .btn {
    margin-top: 0.35rem;
}

#mypage-error { margin-top: 1rem; }

/* Active states for touch */
@media (hover: hover) {
    .slot-btn:hover,
    .service-card:hover,
    .btn:hover,
    .calendar-nav-btn:hover {
        border-color: var(--accent);
    }

    .btn:hover {
        filter: brightness(1.03);
    }

    .line-cta:hover {
        color: #fff;
        filter: brightness(1.04);
    }

    .booking-calendar a.day:hover {
        background: var(--accent-soft);
    }

    .btn-cancel:hover {
        background: rgba(139, 58, 58, 0.08);
    }
}

@media (hover: none) {
    .service-card:active,
    .slot-btn:active,
    .calendar-nav-btn:active {
        background: rgba(95, 111, 82, 0.08);
    }

    .btn:active,
    .line-cta:active {
        filter: brightness(0.96);
    }
}

/* Larger phones / small tablets */
@media (min-width: 480px) {
    .slot-list {
        grid-template-columns: repeat(4, 1fr);
    }

    .header-member {
        display: block;
    }

    .summary {
        grid-template-columns: 5.5rem 1fr;
        gap: 0.55rem 0.85rem;
        align-items: baseline;
    }

    .summary dt {
        font-size: 0.9rem;
    }

    .summary dd {
        margin: 0;
    }
}

/* Desktop comfort */
@media (min-width: 768px) {
    :root {
        --pad-x: 1.25rem;
    }

    .site-header {
        position: static;
        background: transparent;
        backdrop-filter: none;
        border-bottom: none;
        padding: 1.75rem 0 1.1rem;
    }

    .brand { font-size: 1.6rem; }

    .header-auth {
        font-size: 0.9rem;
        gap: 0.65rem 1rem;
    }

    .header-btn {
        min-height: 2.4rem;
        padding: 0.45rem 1.25rem;
        font-size: 0.92rem;
    }

    .page-title {
        font-size: 1.4rem;
        margin: 0.75rem 0 1.25rem;
    }

    .booking-form {
        max-width: 480px;
    }

    #booking-confirm-form.booking-form {
        max-width: none;
    }

    #booking-confirm-form .btn {
        width: auto;
        min-width: 280px;
        max-width: 480px;
        justify-self: start;
    }

    .booking-notices {
        padding: 1.25rem 1.35rem;
    }

    .slot-list {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    }

    .booking-calendar td,
    .booking-calendar .day {
        height: 3rem;
        min-height: 3rem;
    }

    .booking-calendar th {
        font-size: 0.9rem;
    }

    .site-footer {
        text-align: left;
        padding: 2rem 0 1.5rem;
    }

    .back-link {
        text-align: left;
    }
}