/* ========================================
   顧客向け予約ページ CSS
   配色・書体は本サイト（retar-emina.com）に準拠
   ======================================== */

:root {
    /* 本サイトのブランドカラー */
    --b-primary: #b69b67;
    --b-primary-hover: #9a8252;
    --b-primary-alpha: rgba(182, 155, 103, 0.10);
    --b-primary-alpha-strong: rgba(182, 155, 103, 0.20);
    --b-gold: #b69b67;
    --b-gold-dark: #9a8252;
    --b-accent: #d4af37;
    --b-success: #6b8f71;
    --b-danger: #d32f2f;
    --b-danger-bg: #fff8f8;
    --b-danger-border: #ffcdd2;
    --b-warning: #b69b67;
    --b-text: #333333;
    --b-text-secondary: #666666;
    --b-text-muted: #999999;
    --b-bg: #f9f9f9;
    --b-bg-card: #ffffff;
    --b-border: #e5e5e5;
    --b-radius: 8px;
    --b-radius-sm: 4px;
    --b-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    --b-shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --b-shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --b-font: 'Noto Serif JP', serif;
}

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

body {
    font-family: var(--b-font);
    background: var(--b-bg);
    color: var(--b-text);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

/* Header（本サイト準拠：白背景＋薄い影） */
.booking-header {
    background: rgba(255, 255, 255, 0.95);
    color: var(--b-text);
    padding: 14px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.booking-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.header-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.brand-link { display: block; }
.brand-link:hover { opacity: 0.8; }

.brand-icon {
    font-size: 28px;
    opacity: 0.85;
}

/* 本サイトのロゴ画像（Spa Retar ワードマーク） */
.brand-logo {
    height: 44px;
    width: auto;
    display: block;
}

.brand-name {
    font-family: var(--b-font);
    font-size: 19px;
    font-weight: 500;
    letter-spacing: 3px;
    color: var(--b-text);
}

.brand-sub {
    font-size: 10px;
    color: var(--b-primary);
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: 400;
}

@media (max-width: 640px) {
    .brand-logo { height: 34px; }
    .brand-name { font-size: 16px; letter-spacing: 2px; }
}

/* Step Progress */
.step-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 0 8px;
    gap: 0;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    min-width: 60px;
}

.step-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    background: var(--b-border);
    color: var(--b-text-muted);
    transition: all 0.3s;
}

.step-item.active .step-circle {
    background: var(--b-gold);
    color: #fff;
    box-shadow: 0 0 0 4px var(--b-primary-alpha-strong);
}

.step-item.done .step-circle {
    background: var(--b-success);
    color: #fff;
}

.step-label {
    font-size: 11px;
    color: var(--b-text-muted);
    font-weight: 500;
    white-space: nowrap;
}

.step-item.active .step-label {
    color: var(--b-gold);
    font-weight: 600;
}

.step-item.done .step-label { color: var(--b-success); }

.step-line {
    flex: 1;
    height: 2px;
    background: var(--b-border);
    min-width: 20px;
    max-width: 60px;
    margin: 0 4px;
    margin-bottom: 22px;
}

.step-line.done { background: var(--b-success); }

/* Main */
.booking-main {
    flex: 1;
    padding: 24px 0 40px;
}

/* Card */
.bk-card {
    background: var(--b-bg-card);
    border-radius: var(--b-radius);
    box-shadow: var(--b-shadow);
    padding: 28px;
    margin-bottom: 20px;
}

.bk-card-title {
    font-family: var(--b-font);
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.05em;
    color: var(--b-text);
}

/* Menu Card */
.menu-card {
    border: 2px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    padding: 16px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.menu-card:hover {
    border-color: var(--b-primary);
    box-shadow: var(--b-shadow-md);
    transform: translateY(-1px);
}

.menu-card.selected {
    border-color: var(--b-primary);
    background: var(--b-primary-alpha);
}

.menu-card .menu-name {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.menu-card .menu-desc {
    font-size: 12px;
    color: var(--b-text-secondary);
    line-height: 1.5;
    margin-bottom: 8px;
}

.menu-card .menu-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--b-text-secondary);
}

.menu-card .menu-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--b-gold);
}

.menu-card .menu-check {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--b-gold);
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
}

.menu-card.selected .menu-check { display: flex; }

/* Date Selector */
.date-scroll {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 0;
    -webkit-overflow-scrolling: touch;
}

.date-btn {
    flex-shrink: 0;
    padding: 10px 14px;
    border: 2px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    background: var(--b-bg-card);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
    min-width: 72px;
    font-family: inherit;
}

.date-btn:hover { border-color: var(--b-gold); }
.date-btn.selected { border-color: var(--b-gold); background: var(--b-gold); color: #fff; }

.date-btn .date-day { font-size: 11px; color: var(--b-text-muted); }
.date-btn.selected .date-day { color: rgba(255,255,255,0.8); }
.date-btn .date-num { font-size: 16px; font-weight: 700; }

/* Time Slots */
.time-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
}

.time-btn {
    padding: 10px;
    border: 2px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    background: var(--b-bg-card);
    cursor: pointer;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    transition: all 0.2s;
}

.time-btn:hover { border-color: var(--b-gold); background: var(--b-primary-alpha); }
.time-btn.selected { border-color: var(--b-gold); background: var(--b-gold); color: #fff; }
.time-btn.unavailable { opacity: 0.3; cursor: not-allowed; pointer-events: none; }

/* Form */
.bk-form-group {
    margin-bottom: 18px;
}

.bk-form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--b-text);
}

.bk-form-group label .required {
    color: var(--b-danger);
    margin-left: 4px;
}

.bk-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: border-color 0.2s;
    background: var(--b-bg-card);
}

.bk-input:focus {
    outline: none;
    border-color: var(--b-gold);
    box-shadow: 0 0 0 3px var(--b-primary-alpha);
}

.bk-input::placeholder { color: var(--b-text-muted); }

/* Buttons */
.bk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border: none;
    border-radius: var(--b-radius-sm);
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.bk-btn-primary {
    background: var(--b-primary);
    color: #fff;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.bk-btn-primary:hover {
    background: var(--b-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--b-shadow-md);
}

.bk-btn-primary:disabled {
    background: #cfcfcf;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.bk-btn-secondary {
    background: transparent;
    color: var(--b-text-secondary);
    border: 2px solid var(--b-border);
}

.bk-btn-secondary:hover { border-color: var(--b-text-secondary); }

.bk-btn-lg { padding: 16px 40px; font-size: 16px; width: 100%; }

/* Summary Panel */
.summary-panel {
    background: var(--b-bg);
    border-radius: var(--b-radius-sm);
    padding: 16px 20px;
    border: 1px solid var(--b-border);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    font-size: 14px;
}

.summary-row.total {
    border-top: 2px solid var(--b-border);
    margin-top: 8px;
    padding-top: 12px;
    font-size: 18px;
    font-weight: 700;
}

.summary-row .label { color: var(--b-text-secondary); }
.summary-row .value { font-weight: 600; }
.summary-row.total .value { color: var(--b-gold); font-size: 22px; }

/* Pair toggle */
.pair-toggle {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.pair-btn {
    flex: 1;
    padding: 14px 20px;
    border: 2px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    background: var(--b-bg-card);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
}

.pair-btn:hover { border-color: var(--b-gold); }
.pair-btn.selected { border-color: var(--b-gold); background: var(--b-gold); color: #fff; }

/* Alerts */
.booking-alert {
    padding: 14px 18px;
    border-radius: var(--b-radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
}

.booking-alert-error {
    background: var(--b-danger-bg);
    color: var(--b-danger);
    border: 1px solid var(--b-danger-border);
}

.booking-alert-success {
    background: #f2f7f0;
    color: #4a7050;
    border: 1px solid #c0d8b8;
}

/* Complete */
.complete-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--b-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 40px;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Footer */
.booking-footer {
    background: #ffffff;
    color: var(--b-text-light, #666666);
    padding: 32px 0;
    text-align: center;
    font-size: 12px;
    letter-spacing: 0.05em;
    border-top: 1px solid var(--b-border);
}

.footer-logo {
    height: 32px;
    width: auto;
    margin: 0 auto 14px;
    opacity: 0.75;
}

.footer-info {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 12px;
}

/* Language Switcher */
.lang-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: #fff;
    border: 1px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    color: var(--b-text);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.lang-btn:hover {
    border-color: var(--b-primary);
    color: var(--b-primary);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 6px;
    background: #fff;
    border: 1px solid var(--b-border);
    border-radius: var(--b-radius-md, 8px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    min-width: 160px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
}

.lang-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    padding: 10px 16px;
    font-size: 14px;
    color: var(--b-text);
    text-decoration: none;
    transition: background 0.15s;
}

.lang-option:hover {
    background: var(--b-primary-alpha);
}

.lang-option.active {
    background: var(--b-primary-alpha);
    color: var(--b-primary);
    font-weight: 600;
}

.lang-option:first-child { border-radius: 8px 8px 0 0; }
.lang-option:last-child { border-radius: 0 0 8px 8px; }

/* ブラウザ互換性 */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type="number"] {
    -moz-appearance: textfield;
}
/* Safariのbutton/input外観リセット */
button, input, select, textarea {
    -webkit-appearance: none;
}
button {
    -webkit-appearance: button;
}
/* iOS Safari のズーム防止（フォーカス時16px以上） */
input.bk-input,
select.bk-input,
textarea.bk-input {
    font-size: max(16px, 1em);
}

/* Responsive */
@media (max-width: 640px) {
    .bk-card { padding: 20px 16px; }
    .booking-container { padding: 0 12px; }
    .time-grid { grid-template-columns: repeat(4, 1fr); }
    .lang-btn span:not(.material-symbols-outlined) { display: none; }

    /* 5ステップ分が画面幅に収まらず横スクロールしていたため、
       最小幅を外して縮められるようにする */
    .step-progress { padding: 16px 0 6px; }
    .step-item { min-width: 0; flex: 1 1 0; gap: 4px; }
    .step-circle { width: 26px; height: 26px; font-size: 11px; }
    /* 画面幅に収めるため折り返しを許可する（日本語は任意位置で改行される） */
    .step-label {
        font-size: 9px;
        white-space: normal;
        text-align: center;
        line-height: 1.3;
        letter-spacing: -0.02em;
    }
    .step-line { min-width: 6px; max-width: 20px; margin-bottom: 26px; }
}

/* 横方向にはみ出させない（本文は常に画面内に収める） */
html, body { max-width: 100%; overflow-x: hidden; }

/* ========================================
   週グリッド（日付 × 時間帯）
   日付選択と空き状況表示を1画面にまとめるためのUI。
   ======================================== */
.grid-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.grid-nav-btn {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border: 1px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    background: var(--b-bg-card);
    cursor: pointer;
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--b-text-secondary);
    transition: all 0.2s;
}

.grid-nav-btn:hover:not(:disabled) { border-color: var(--b-gold); color: var(--b-gold); }
.grid-nav-btn:disabled { opacity: 0.35; cursor: not-allowed; }

.grid-nav-label {
    font-size: 14px;
    font-weight: 600;
    flex: 1;
    text-align: center;
}

.slot-grid {
    width: 100%;
    border-collapse: separate;
    border-spacing: 4px;
    table-layout: fixed;
}

.slot-grid th, .slot-grid td { text-align: center; }

.slot-grid thead th {
    font-size: 13px;
    font-weight: 600;
    padding: 6px 2px;
    color: var(--b-text-secondary);
}

/* 土日は視認性のため色を分ける（休業日の判別ではない） */
.slot-grid thead th.dow-6 { color: #5b7fa6; }
.slot-grid thead th.dow-0 { color: var(--b-danger); }

.slot-grid th.hour-label {
    width: 62px;
    font-size: 12px;
    font-weight: 500;
    color: var(--b-text-secondary);
    background: var(--b-bg);
    border-radius: var(--b-radius-sm);
    white-space: nowrap;
}

.slot-cell {
    padding: 0;
    height: 46px;
}

/* セル全体をボタンにする（指で押しやすいように） */
.slot-btn {
    width: 100%;
    height: 100%;
    min-height: 46px;
    border: 1px solid var(--b-border);
    border-radius: var(--b-radius-sm);
    background: var(--b-bg-card);
    font-family: inherit;
    font-size: 17px;
    line-height: 1;
    color: var(--b-text);
    cursor: pointer;
    transition: all 0.15s;
}

.slot-btn:hover:not(:disabled) {
    border-color: var(--b-gold);
    background: var(--b-primary-alpha);
}

.slot-btn.selected {
    background: var(--b-primary);
    border-color: var(--b-primary);
    color: #fff;
}

.slot-btn:disabled {
    background: #f2f2f2;
    border-color: transparent;
    color: var(--b-text-muted);
    opacity: 0.55;
    cursor: not-allowed;
}

.slot-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 12px;
    font-size: 12px;
    color: var(--b-text-secondary);
}

.slot-legend span { display: inline-flex; align-items: center; gap: 4px; }

.grid-empty {
    text-align: center;
    padding: 24px 12px;
    color: var(--b-text-secondary);
    font-size: 14px;
}

/* 開始時刻モーダル */
.time-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 100;
}

.time-modal[hidden] { display: none; }

.time-modal-box {
    background: var(--b-bg-card);
    border-radius: var(--b-radius);
    box-shadow: var(--b-shadow-md);
    padding: 24px;
    width: 100%;
    max-width: 460px;
    max-height: 85vh;
    overflow-y: auto;
}

.time-modal-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.time-modal-close {
    border: none;
    background: none;
    cursor: pointer;
    color: var(--b-text-muted);
    padding: 0;
    line-height: 1;
    font-family: inherit;
}

.time-modal-date {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 12px;
}

.time-modal .time-grid { margin-bottom: 20px; }

/* スマホは3日表示にするため、列幅を確保して文字を詰める */
@media (max-width: 640px) {
    .slot-grid { border-spacing: 3px; }
    .slot-grid th.hour-label { width: 52px; font-size: 11px; }
    .slot-grid thead th { font-size: 12px; }
    .slot-btn { font-size: 16px; min-height: 44px; }
    .grid-nav-label { font-size: 13px; }
}