/* Booking System v6 — Frontend CSS */

:root {
    --bk-primary:      #156962;
    --bk-primary-dark: #003733;
    --bk-primary-cont: #9DF2E7;
    --bk-secondary:    #52615F;
    --bk-red:          #BA1A1A;
    --bk-red-bg:       #FFDAD6;
    --bk-green:        #15803d;
    --bk-green-bg:     #dcfce7;
    --bk-green-light:  #f0fdf4;
    --bk-border:       #BEC9C6;
    --bk-muted:        #52615F;
    --bk-surface:      #F4FBFA;
    --bk-radius:       12px;
    --bk-radius-sm:    8px;
    --bk-radius-xs:    5px;
}

/* ── Wrap ─────────────────────────────────────────────── */
.booking-form-wrap { font-family: inherit; }
.bk-form-heading {
    font-size: 24px; font-weight: 700;
    color: var(--bk-primary-dark); margin: 0 0 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--bk-primary-cont);
}

/* ── Layout ───────────────────────────────────────────── */
.bk-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}
.bk-col-calendar .bc-calendar { position: sticky; top: 20px; }
@media (max-width: 900px) {
    .bk-layout { grid-template-columns: 1fr; gap: 24px; }
    .bk-col-calendar .bc-calendar { position: static; }
}

/* ── Selected info bar ────────────────────────────────── */
.bc-selected-info {
    background: var(--bk-primary-cont);
    border: 1px solid var(--bk-primary);
    border-radius: var(--bk-radius-sm);
    padding: 10px 16px; margin-bottom: 16px;
    font-size: 14px; color: var(--bk-primary-dark);
    display: flex; align-items: center; gap: 8px;
}
.bc-change-date {
    color: var(--bk-primary); font-size: 12px;
    margin-left: auto; text-decoration: underline;
    white-space: nowrap;
}

/* ── Calendar shell ───────────────────────────────────── */
.bc-calendar {
    width: 100%;
    border: 1px solid var(--bk-border);
    border-radius: var(--bk-radius);
    overflow: hidden;
    background: #fff;
    box-shadow: 0 2px 12px rgba(0,55,51,.10);
}
.bc-loading {
    display: flex; align-items: center; gap: 10px;
    padding: 32px; color: var(--bk-muted); font-size: 14px;
}
.bc-spinner {
    width: 18px; height: 18px;
    border: 2px solid var(--bk-border);
    border-top-color: var(--bk-primary);
    border-radius: 50%;
    animation: bk-spin .7s linear infinite; flex-shrink: 0;
}
@keyframes bk-spin { to { transform: rotate(360deg); } }
.bc-error-msg { padding: 20px 24px; color: var(--bk-red); }

/* ── Calendar header ──────────────────────────────────── */
.bc-cal-header {
    display: flex; align-items: center; justify-content: space-between;
    background: var(--bk-primary-dark); color: #fff;
    padding: 14px 18px;
}
.bc-cal-title { font-size: 16px; font-weight: 600; letter-spacing: .01em; }

.bc-nav-btn {
    background: rgba(255,255,255,.15);
    border: 2px solid rgba(255,255,255,.9);
    color: #fff;
    width: 38px; height: 38px;
    border-radius: var(--bk-radius-sm);
    cursor: pointer;
    line-height: 1;
    transition: background .15s, transform .1s;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    padding: 0;
}
/* SVG arrow — thick, short, white */
.bc-nav-btn svg {
    width: 14px; height: 14px;
    stroke: #fff;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    display: block;
}
.bc-nav-btn:hover:not(:disabled) {
    background: rgba(255,255,255,.35);
    transform: scale(1.08);
}
.bc-nav-btn:disabled { opacity: .3; cursor: default; }

/* ── Calendar grid ────────────────────────────────────── */
.bc-cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border-top: 1px solid var(--bk-border);
}

.bc-day-name {
    text-align: center;
    font-size: 11px; font-weight: 700;
    color: var(--bk-primary);
    text-transform: uppercase; letter-spacing: .08em;
    padding: 8px 2px;
    border-right: 1px solid var(--bk-border);
    border-bottom: 1px solid var(--bk-border);
    background: var(--bk-surface);
    overflow: hidden;
}
.bc-day-name:nth-child(7n) { border-right: none; }

/* ─────────────────────────────────────────────────────────
   DAY CELLS — fixed height, no overflow
───────────────────────────────────────────────────────── */
.bc-cell-empty,
.bc-cell-past,
.bc-cell-day {
    border-right: 1px solid var(--bk-border);
    border-bottom: 1px solid var(--bk-border);
    padding: 3px 2px 3px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    box-sizing: border-box;
    height: 76px;
    overflow: hidden;
    min-width: 0; /* prevent grid blowout */
}
.bc-cell-empty:nth-child(7n),
.bc-cell-past:nth-child(7n),
.bc-cell-day:nth-child(7n) { border-right: none; }

.bc-day-num {
    font-size: 10px; font-weight: 700;
    color: #475569;
    text-align: center;
    line-height: 1.2;
    flex-shrink: 0;
}

.bc-cell-empty { background: #f8fafb; }
.bc-cell-past  { background: #f8fafb; }
.bc-cell-past .bc-day-num { color: #cbd5e1; }

/* ─────────────────────────────────────────────────────────
   TIME SLOT BUTTONS — stacked, full readable text
───────────────────────────────────────────────────────── */
.bc-time-btns {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.bc-time-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Responsive font — clamp between 8px and 10px */
    font-size: clamp(8px, 1.3vw, 10px);
    font-weight: 700;
    border-radius: 4px;
    border: 1.5px solid transparent;
    cursor: pointer;
    line-height: 1;
    transition: background .12s, border-color .12s;
    padding: 0;
    white-space: nowrap;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
    letter-spacing: 0;
    min-width: 0;
}

/* FREE slots — jemná zelená */
.bc-time-btn:not(.bc-time-blocked):not(.bc-time-selected) {
    background: var(--bk-green-bg);
    border-color: #86efac;
    color: var(--bk-green);
}
.bc-time-btn:not(.bc-time-blocked):not(.bc-time-selected):hover {
    background: #bbf7d0;
    border-color: var(--bk-green);
}

/* BLOCKED slots — červená */
.bc-time-btn.bc-time-blocked {
    background: var(--bk-red-bg);
    border-color: #fca5a5;
    color: var(--bk-red);
    cursor: not-allowed;
    opacity: .8;
}

/* SELECTED slot — tmavozelená */
.bc-time-btn.bc-time-selected {
    background: var(--bk-primary-dark) !important;
    border-color: var(--bk-primary-dark) !important;
    color: #fff !important;
    font-weight: 700;
}

/* ── Legend ───────────────────────────────────────────── */
.bc-legend {
    display: flex; flex-wrap: wrap; gap: 10px;
    padding: 10px 16px;
    border-top: 1px solid var(--bk-border);
    background: var(--bk-surface);
}
.bc-leg {
    font-size: 11px; border-radius: 4px;
    padding: 4px 10px; font-weight: 600;
    display: flex; align-items: center; gap: 5px;
}
.bc-leg-free     { background: var(--bk-green-bg);    border: 1.5px solid #86efac; color: var(--bk-green); }
.bc-leg-booked   { background: var(--bk-red-bg);      border: 1.5px solid #fca5a5; color: var(--bk-red); }
.bc-leg-selected { background: var(--bk-primary-dark); color: #fff; }

.bc-cal-date-err {
    color: var(--bk-red); font-size: 12px; margin: 6px 0 0;
}

/* ── Form sections ────────────────────────────────────── */
.bk-form-section { margin-bottom: 22px; }
.bk-section-title {
    font-size: 12px; font-weight: 700;
    color: var(--bk-primary-dark);
    margin: 0 0 12px; padding: 0 0 7px;
    border-bottom: 1px solid var(--bk-border);
    text-transform: uppercase; letter-spacing: .07em;
}

.bc-form { max-width: 100%; }
.bc-field { margin-bottom: 13px; }
.bc-field label {
    display: block; font-size: 13px; font-weight: 600;
    color: var(--bk-primary-dark); margin-bottom: 5px;
}
.bc-req { color: var(--bk-red); margin-left: 2px; }

.bc-field input,
.bc-field select,
.bc-field textarea {
    width: 100%; padding: 9px 13px;
    border: 1.5px solid var(--bk-border);
    border-radius: var(--bk-radius-sm);
    font-size: 14px; color: #1a2827; background: #fff;
    box-sizing: border-box;
    -webkit-appearance: none; appearance: none;
    transition: border-color .15s, box-shadow .15s;
    font-family: inherit;
}
.bc-field select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' fill='none'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%2352615F' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 13px center;
    padding-right: 36px;
}
.bc-field input:focus,
.bc-field select:focus,
.bc-field textarea:focus {
    outline: none;
    border-color: var(--bk-primary);
    box-shadow: 0 0 0 3px rgba(21,105,98,.12);
}
.bc-err {
    display: block; font-size: 11px;
    color: var(--bk-red); margin-top: 3px; min-height: 14px;
}

.bc-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.bc-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
@media (max-width: 600px) {
    .bc-row-2, .bc-row-3 { grid-template-columns: 1fr; gap: 0; }
}

/* East notice */
.bc-east-notice {
    background: #fffbeb; border: 1px solid #fbbf24;
    border-radius: var(--bk-radius-sm);
    padding: 9px 13px; font-size: 12px;
    color: #92400e; margin-top: 6px; line-height: 1.5;
}

/* Bracket info */
.bc-bracket-info {
    background: var(--bk-surface); border-radius: 4px;
    padding: 4px 10px; font-size: 12px;
    color: var(--bk-muted); margin-top: 4px;
}

/* Payment note */
.bc-payment-note {
    font-size: 12px; color: var(--bk-muted);
    margin: 0 0 12px; font-style: italic;
    line-height: 1.5;
}

/* ── Price box ────────────────────────────────────────── */
.bc-price-box {
    background: var(--bk-surface);
    border: 1.5px solid var(--bk-primary);
    border-radius: var(--bk-radius);
    padding: 16px 20px; margin-bottom: 16px;
    text-align: center;
}
@keyframes bk-pop {
    from { transform: scale(.97); opacity: .6; }
    to   { transform: scale(1);   opacity: 1; }
}
.bc-price-pop { animation: bk-pop .25s ease; }
.bc-price-label  { font-size: 11px; color: var(--bk-muted); margin: 0 0 4px; text-transform: uppercase; letter-spacing: .06em; }
.bc-price-amount { font-size: 30px; font-weight: 700; color: var(--bk-primary-dark); display: block; margin-bottom: 4px; }
.bc-price-detail { font-size: 12px; color: var(--bk-muted); }
.bc-price-note   { font-size: 11px; color: var(--bk-muted); margin: 6px 0 0; }

/* ── Submit ───────────────────────────────────────────── */
.bc-submit-btn {
    width: 100%; padding: 14px;
    background: var(--bk-primary-dark);
    color: #fff; border: none;
    border-radius: var(--bk-radius-sm);
    font-size: 15px; font-weight: 700;
    cursor: pointer; letter-spacing: .02em;
    font-family: inherit;
    transition: background .2s, transform .1s, box-shadow .2s;
    box-shadow: 0 2px 8px rgba(0,55,51,.25);
}
.bc-submit-btn:hover:not(:disabled) {
    background: var(--bk-primary);
    box-shadow: 0 4px 16px rgba(0,55,51,.35);
    transform: translateY(-1px);
}
.bc-submit-btn:active { transform: scale(.99); box-shadow: none; }
.bc-submit-btn:disabled { opacity: .6; cursor: not-allowed; }

/* ── Messages ─────────────────────────────────────────── */
.bc-msg-success, .bc-msg-error {
    border-radius: var(--bk-radius-sm);
    padding: 14px 16px; margin-top: 14px;
    font-size: 14px; line-height: 1.6;
}
.bc-msg-success { background: #f0fdf4; border: 1px solid #86efac; color: #166534; }
.bc-msg-error   { background: var(--bk-red-bg); border: 1px solid #fca5a5; color: var(--bk-red); }

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 480px) {
    .bc-cell-empty, .bc-cell-past, .bc-cell-day { height: 64px; }
    .bc-time-btn  { font-size: 8px; }
    .bc-day-num   { font-size: 9px; }
}
@media (max-width: 360px) {
    .bc-cell-empty, .bc-cell-past, .bc-cell-day { height: 58px; }
    .bc-time-btn  { font-size: 7px; }
}