/* ===================================================================
   F&B Reservation System — Frontend Reservation Form
=================================================================== */

/* ── Design tokens ─────────────────────────────────────────────── */
:root {
    --ctb-primary:        #7991a5;   /* available tab / selected buttons */
    --ctb-accent:         #918080;   /* selected date bg */
    --ctb-closed:         #9b9b9b;   /* fully booked / closed tab */
    --ctb-today-bg:       #eaeaea;   /* today highlight box */
    --ctb-text:           #333;
    --ctb-text-muted:     #888;
    --ctb-border:         #e0e0e0;
    --ctb-radius:         12px;
    --ctb-radius-sm:      6px;
    --ctb-shadow:         0 2px 12px rgba(0,0,0,.08);
    --ctb-font:           inherit;
}

/* ── Container ─────────────────────────────────────────────────── */
.ctb-reservation-app {
    font-family: var(--ctb-font);
    color: var(--ctb-text);
    max-width: 480px;
    margin: 0 auto;
}

.ctb-app {
    border: 1px solid var(--ctb-border);
    border-radius: var(--ctb-radius);
    background: #fff;
    box-shadow: var(--ctb-shadow);
    overflow: hidden;
}

/* ── Header ────────────────────────────────────────────────────── */
.ctb-header {
    padding: 18px 24px 14px;
    border-bottom: 1px solid var(--ctb-border);
}

.ctb-step-label {
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .6px;
    color: var(--ctb-text-muted);
    margin-bottom: 4px;
}

.ctb-step-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

/* ── Step progress dots ────────────────────────────────────────── */
.ctb-progress {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-top: 10px;
}

.ctb-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ctb-border);
    transition: background .2s;
}

.ctb-dot--active   { background: var(--ctb-primary); }
.ctb-dot--complete { background: var(--ctb-primary); opacity: .5; }

/* ── Content area ──────────────────────────────────────────────── */
.ctb-content {
    padding: 20px 24px;
    min-height: 200px;
}

/* ── Loading / Error ───────────────────────────────────────────── */
.ctb-loading {
    text-align: center;
    padding: 40px 20px;
    color: var(--ctb-text-muted);
}

.ctb-spinner {
    display: inline-block;
    width: 28px;
    height: 28px;
    border: 3px solid var(--ctb-border);
    border-top-color: var(--ctb-primary);
    border-radius: 50%;
    animation: ctb-spin .7s linear infinite;
    margin-bottom: 12px;
}

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

.ctb-error {
    background: #fff0f0;
    border: 1px solid #fcc;
    border-radius: var(--ctb-radius-sm);
    padding: 12px 16px;
    color: #c0392b;
    font-size: .9rem;
}

/* ═══════════════════════════════════════════════════════════════
   STEP 1 — Menu Selection
═══════════════════════════════════════════════════════════════ */

.ctb-menu-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.ctb-menu-card {
    display: flex;
    align-items: center;
    gap: 14px;
    border: 1px solid var(--ctb-border);
    border-radius: var(--ctb-radius);
    padding: 12px;
    transition: border-color .2s, box-shadow .2s;
}

.ctb-menu-card:hover {
    border-color: var(--ctb-primary);
    box-shadow: 0 2px 8px rgba(121,145,165,.15);
}

.ctb-menu-img {
    width: 90px;
    height: 68px;
    object-fit: cover;
    border-radius: var(--ctb-radius-sm);
    flex-shrink: 0;
    background: #f5f5f5;
}

.ctb-menu-img-placeholder {
    width: 90px;
    height: 68px;
    border-radius: var(--ctb-radius-sm);
    background: #f0f0f0;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ctb-text-muted);
    font-size: 1.4rem;
}

.ctb-menu-info {
    flex: 1;
    min-width: 0;
}

.ctb-menu-name {
    font-weight: 600;
    font-size: .95rem;
    margin-bottom: 3px;
}

.ctb-menu-desc {
    font-size: .78rem;
    color: var(--ctb-text-muted);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ctb-menu-price {
    font-size: .85rem;
    color: var(--ctb-text-muted);
}

/* Quantity control */
.ctb-qty {
    display: flex;
    align-items: center;
    gap: 0;
    flex-shrink: 0;
}

.ctb-qty-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--ctb-border);
    background: #f5f5f5;
    border-radius: var(--ctb-radius-sm);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, border-color .15s;
    user-select: none;
    color: var(--ctb-text);
}

.ctb-qty-btn:hover {
    background: var(--ctb-primary);
    border-color: var(--ctb-primary);
    color: #fff;
}

.ctb-qty-val {
    min-width: 30px;
    text-align: center;
    font-size: .95rem;
    font-weight: 500;
    padding: 0 2px;
}

/* ═══════════════════════════════════════════════════════════════
   STEP 2 — Date & Time Selection
═══════════════════════════════════════════════════════════════ */

/* Calendar nav */
.ctb-cal-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.ctb-cal-month {
    font-size: 1rem;
    font-weight: 600;
}

.ctb-cal-nav-btn {
    background: none;
    border: 1px solid var(--ctb-border);
    border-radius: var(--ctb-radius-sm);
    width: 30px;
    height: 30px;
    cursor: pointer;
    font-size: .9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ctb-text);
    transition: background .15s;
}

.ctb-cal-nav-btn:hover    { background: #f5f5f5; }
.ctb-cal-nav-btn:disabled { opacity: .35; cursor: not-allowed; }

/* Calendar grid */
.ctb-calendar {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.ctb-calendar th {
    text-align: center;
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .4px;
    color: var(--ctb-text-muted);
    padding: 4px 0 8px;
    font-weight: 500;
}

.ctb-calendar td {
    padding: 3px;
    vertical-align: top;
    height: 48px;
}

.ctb-day {
    position: relative;
    width: 100%;
    height: 100%;
    border: none;
    background: none;
    border-radius: var(--ctb-radius-sm);
    cursor: default;
    font-size: .9rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 6px 0 0;
    box-sizing: border-box;
    transition: background .15s;
}

/* Day number */
.ctb-day-num {
    font-size: .88rem;
    line-height: 1;
    font-weight: 500;
}

/* Availability tab (bottom strip) */
.ctb-day::after {
    content: '';
    display: block;
    position: absolute;
    bottom: 3px;
    left: 50%;
    transform: translateX(-50%);
    width: 70%;
    height: 3px;
    border-radius: 2px;
    background: transparent;
}

/* States */
.ctb-day--past,
.ctb-day--no_slot {
    color: #ccc;
}

.ctb-day--today {
    background: var(--ctb-today-bg);
    border-radius: var(--ctb-radius-sm);
    font-weight: 700;
    cursor: pointer;
}

.ctb-day--available {
    cursor: pointer;
    font-weight: 600;
}

.ctb-day--available::after {
    background: var(--ctb-primary);
}

.ctb-day--available:hover {
    background: rgba(121,145,165,.1);
}

.ctb-day--full::after,
.ctb-day--closed::after {
    background: var(--ctb-closed);
}

/* Selected date */
.ctb-day--selected {
    background: var(--ctb-accent) !important;
    color: #fff !important;
    border-radius: var(--ctb-radius-sm);
    cursor: pointer;
}

.ctb-day--selected::after {
    background: rgba(255,255,255,.5) !important;
}

/* ── Time slots ─────────────────────────────────────────────────── */
.ctb-slots-label {
    font-size: .85rem;
    color: var(--ctb-text-muted);
    margin: 16px 0 8px;
    font-weight: 500;
}

.ctb-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ctb-slot-btn {
    padding: 9px 20px;
    border: none;
    border-radius: var(--ctb-radius-sm);
    background: var(--ctb-primary);
    color: #fff;
    font-size: .9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background .15s, transform .1s;
}

.ctb-slot-btn:hover  { background: #6a8194; }

.ctb-slot-btn--selected {
    background: var(--ctb-accent) !important;
    transform: scale(1.04);
}

/* ═══════════════════════════════════════════════════════════════
   STEP 3 — Summary & Add to Cart
═══════════════════════════════════════════════════════════════ */

.ctb-summary {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ctb-summary-section {
    border: 1px solid var(--ctb-border);
    border-radius: var(--ctb-radius-sm);
    overflow: hidden;
}

.ctb-summary-section h3 {
    margin: 0;
    padding: 10px 14px;
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .5px;
    background: #f9f9f9;
    border-bottom: 1px solid var(--ctb-border);
    color: var(--ctb-text-muted);
    font-weight: 600;
}

.ctb-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 9px 14px;
    font-size: .9rem;
    border-bottom: 1px solid #f0f0f0;
}

.ctb-summary-row:last-child { border-bottom: none; }

.ctb-summary-label { color: var(--ctb-text-muted); }

.ctb-summary-total {
    font-size: 1rem;
    font-weight: 700;
    color: var(--ctb-text);
}

.ctb-note-label {
    font-size: .85rem;
    color: var(--ctb-text-muted);
    margin-bottom: 6px;
    display: block;
}

.ctb-note-input {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--ctb-border);
    border-radius: var(--ctb-radius-sm);
    font-size: .9rem;
    resize: vertical;
    font-family: inherit;
    box-sizing: border-box;
}

.ctb-note-input:focus {
    outline: none;
    border-color: var(--ctb-primary);
}

.ctb-deposit-note {
    font-size: .78rem;
    color: var(--ctb-text-muted);
    margin-top: 2px;
    font-style: italic;
}

/* ── Navigation footer ─────────────────────────────────────────── */
.ctb-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-top: 1px solid var(--ctb-border);
    background: #fafafa;
}

.ctb-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--ctb-radius-sm);
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s, opacity .15s;
    text-decoration: none;
    font-family: inherit;
}

.ctb-btn--back {
    background: #e8ecef;
    color: var(--ctb-text);
}

.ctb-btn--back:hover { background: #dde2e7; }

.ctb-btn--next {
    background: var(--ctb-primary);
    color: #fff;
    margin-left: auto;
}

.ctb-btn--next:hover    { background: #6a8194; }
.ctb-btn--next:disabled { opacity: .5; cursor: not-allowed; }

.ctb-btn--cart {
    background: var(--ctb-primary);
    color: #fff;
    margin-left: auto;
}

.ctb-btn--cart:hover    { background: #6a8194; }
.ctb-btn--cart:disabled { opacity: .5; cursor: not-allowed; }

.ctb-btn-arrow { font-size: 1rem; }

/* ── Calendar legend ───────────────────────────────────────────── */
.ctb-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    margin-top: 14px;
    padding: 10px 0 0;
    border-top: 1px solid var(--ctb-border);
}

.ctb-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .75rem;
    color: var(--ctb-text-muted);
}

.ctb-legend-swatch {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 3px;
    flex-shrink: 0;
}

.ctb-legend-swatch--today     { background: var(--ctb-today-bg); border: 1px solid #ccc; }
.ctb-legend-swatch--available { background: var(--ctb-primary); }
.ctb-legend-swatch--closed    { background: var(--ctb-closed); }
.ctb-legend-swatch--selected  { background: var(--ctb-accent); }

/* ── Guest details (Step 3) ───────────────────────────────────── */
.ctb-guest-row {
    padding: 12px 14px;
    border-bottom: 1px solid #f0f0f0;
}

.ctb-guest-row:last-child { border-bottom: none; }

.ctb-guest-header {
    font-size: .85rem;
    font-weight: 600;
    color: var(--ctb-text);
    margin-bottom: 8px;
}

.ctb-guest-fields {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ctb-guest-field {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ctb-guest-label {
    font-size: .82rem;
    color: var(--ctb-text-muted);
    min-width: 120px;
    flex-shrink: 0;
}

.ctb-guest-input {
    flex: 1;
    padding: 7px 10px;
    border: 1px solid var(--ctb-border);
    border-radius: var(--ctb-radius-sm);
    font-size: .85rem;
    font-family: inherit;
}

.ctb-guest-input:focus {
    outline: none;
    border-color: var(--ctb-primary);
}

.ctb-allergy-toggle {
    display: flex;
    gap: 0;
}

.ctb-allergy-btn {
    padding: 5px 14px;
    border: 1px solid var(--ctb-border);
    background: #f5f5f5;
    font-size: .82rem;
    cursor: pointer;
    font-family: inherit;
    transition: background .15s, border-color .15s, color .15s;
    color: var(--ctb-text);
}

.ctb-allergy-btn:first-child {
    border-radius: var(--ctb-radius-sm) 0 0 var(--ctb-radius-sm);
    border-right: none;
}

.ctb-allergy-btn:last-child {
    border-radius: 0 var(--ctb-radius-sm) var(--ctb-radius-sm) 0;
}

.ctb-allergy-btn--active {
    background: var(--ctb-primary);
    border-color: var(--ctb-primary);
    color: #fff;
}

/* ── Slot availability info ────────────────────────────────────── */
.ctb-slot-avail {
    font-size: .75rem;
    color: #fff;
    font-weight: 600;
    margin-top: 4px;
}

/* ── Price display on menu step ───────────────────────────────── */
.ctb-price-summary {
    margin-top: 16px;
    padding: 12px 14px;
    border: 1px solid var(--ctb-border);
    border-radius: var(--ctb-radius-sm);
    background: #f9f9f9;
}

.ctb-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: .9rem;
    padding: 4px 0;
}

.ctb-price-row--total {
    font-weight: 700;
    font-size: .95rem;
    border-top: 1px solid var(--ctb-border);
    margin-top: 4px;
    padding-top: 8px;
}

.ctb-price-row--deposit {
    color: var(--ctb-primary);
    font-weight: 600;
}

/* ── Mobile ────────────────────────────────────────────────────── */
@media (max-width: 480px) {
    .ctb-content  { padding: 16px; }
    .ctb-footer   { padding: 12px 16px; }
    .ctb-header   { padding: 14px 16px 12px; }
    .ctb-day      { font-size: .8rem; }

    /* Stack menu cards vertically on mobile */
    .ctb-menu-card {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .ctb-menu-img,
    .ctb-menu-img-placeholder {
        width: 100%;
        height: 120px;
        border-radius: var(--ctb-radius-sm) var(--ctb-radius-sm) 0 0;
    }

    .ctb-menu-info {
        padding: 8px 0;
    }

    .ctb-menu-desc {
        white-space: normal;
    }

    .ctb-qty {
        justify-content: center;
        padding-top: 4px;
    }

    .ctb-guest-field {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .ctb-guest-label {
        min-width: unset;
    }
}