/* ================================================================
   Đặt lịch — preview B: lịch tháng (calendar) + pill khung giờ
   Dùng chung token màu/chữ của site (frontend-base.css), không sửa
   file gốc. Prefix .bkp- để không đụng class hiện có.
   ================================================================ */

.bkp-section {
    padding: clamp(32px, 5vw, 64px) 0 clamp(64px, 8vw, 96px);
}

.bkp-honeypot {
    position: absolute;
    left: -9999px;
}

.bkp-grid {
    display: grid;
    gap: clamp(1.6rem, 3vw, 2.4rem);
    align-items: start;
}

@media (min-width: 960px) {
    .bkp-grid {
        grid-template-columns: 1.5fr 1fr;
    }

    .bkp-col-side {
        position: sticky;
        top: 110px;
    }
}

.bkp-card {
    border: 1px solid var(--ink-hair);
    padding: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 1.6rem;
    background: var(--cream);
}

.bkp-card:last-child {
    margin-bottom: 0;
}

.bkp-card > .eyebrow {
    display: inline-flex;
    margin-bottom: 1.3rem;
}

.bkp-field {
    margin-bottom: 1.2rem;
}

.bkp-field:last-child {
    margin-bottom: 0;
}

.bkp-field label {
    display: block;
    font-size: .86rem;
    font-weight: 600;
    margin-bottom: .5rem;
}

.bkp-row-2 {
    display: grid;
    gap: 1.2rem;
}

@media (min-width: 560px) {
    .bkp-row-2 {
        grid-template-columns: 1fr 1fr;
    }
}

.bkp-field input[type=text],
.bkp-field input[type=email],
.bkp-field select,
.bkp-field textarea {
    width: 100%;
    font: inherit;
    font-size: .94rem;
    color: var(--ink);
    background: var(--cream);
    border: 1px solid var(--ink-hair);
    padding: .85em 1em;
    transition: border-color .2s ease;
}

.bkp-field input:focus,
.bkp-field select:focus,
.bkp-field textarea:focus {
    outline: none;
    border-color: var(--clay);
}

.bkp-field input.is-invalid,
.bkp-field select.is-invalid,
.bkp-field textarea.is-invalid {
    border-color: #a33;
}

.bkp-field textarea {
    resize: vertical;
    min-height: 110px;
}

.bkp-error {
    color: #a33;
    font-size: .8rem;
    margin-top: .4rem;
}

.bkp-summary {
    font-size: .86rem;
    color: var(--ink-soft);
    margin: 1rem 0 1.2rem;
}

.bkp-summary strong {
    color: var(--ink);
}

.bkp-issues {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
}

.bkp-issue {
    display: inline-flex;
    align-items: center;
    gap: .5em;
    border: 1px solid var(--ink-hair);
    padding: .55em 1em;
    font-size: .85rem;
    cursor: pointer;
    transition: border-color .2s ease, background .2s ease;
}

.bkp-issue:has(input:checked) {
    border-color: var(--clay);
    background: rgba(196, 154, 108, .1);
}

.bkp-issue input {
    accent-color: var(--clay);
}

.bkp-pill-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: .6rem;
}

.bkp-pill {
    position: relative;
    text-align: center;
    border: 1px solid var(--ink-hair);
    padding: .75em .6em;
    font-size: .82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s ease, border-color .2s ease, color .2s ease;
}

.bkp-pill input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.bkp-pill:has(input:checked) {
    background: var(--clay);
    border-color: var(--clay);
    color: var(--ink);
}

.bkp-consent {
    display: flex;
    align-items: flex-start;
    gap: .6em;
    font-size: .82rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--ink-soft);
    cursor: pointer;
}

.bkp-consent input {
    accent-color: var(--clay);
    margin-top: .2em;
    flex-shrink: 0;
}

.bkp-submit {
    width: 100%;
    justify-content: center;
    margin-top: 1.6rem;
}

.bkp-submit:disabled {
    opacity: .5;
    cursor: not-allowed;
}

@media (max-width: 559px) {
    .bkp-pill-group {
        flex-direction: column;
    }
}

/* ---------- lịch tháng ---------- */
.bkp-cal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.bkp-cal-title {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 1.15rem;
    text-transform: capitalize;
}

.bkp-cal-nav {
    display: flex;
    gap: .4rem;
}

.bkp-cal-nav button {
    width: 32px;
    height: 32px;
    border: 1px solid var(--ink-hair);
    background: transparent;
    cursor: pointer;
    font: inherit;
    font-size: 1rem;
    line-height: 1;
    color: var(--ink);
    transition: border-color .2s ease, color .2s ease;
}

.bkp-cal-nav button:hover:not(:disabled) {
    border-color: var(--clay);
    color: var(--clay);
}

.bkp-cal-nav button:disabled {
    opacity: .3;
    cursor: not-allowed;
}

.bkp-cal-weekdays,
.bkp-cal-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 3px;
}

.bkp-cal-weekdays {
    margin-bottom: 4px;
}

.bkp-cal-weekdays span {
    text-align: center;
    font-size: .68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--ink-soft);
    padding: .4em 0;
}

.bkp-cal-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font: inherit;
    font-size: .86rem;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    color: var(--ink);
    transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.bkp-cal-day.is-empty {
    visibility: hidden;
    cursor: default;
}

.bkp-cal-day:hover:not(:disabled):not(.is-empty) {
    border-color: var(--clay);
}

.bkp-cal-day.is-today {
    border-color: var(--ink-hair);
    font-weight: 700;
}

.bkp-cal-day.is-selected {
    background: var(--clay);
    border-color: var(--clay);
    color: var(--ink);
    font-weight: 700;
}

.bkp-cal-day:disabled {
    color: var(--ink-hair);
    cursor: not-allowed;
}

.bkp-cal-selected-label {
    margin-top: 1rem;
    font-size: .85rem;
    color: var(--ink-soft);
    text-align: center;
}

.bkp-cal-selected-label strong {
    color: var(--ink);
}