/* ── Переменные ─────────────────────────────────────────────── */
:root {
    --accent:      #9B6F47;
    --accent-dark: #7a5535;
    --dark:        #2c1f14;
    --text:        #3a2a1e;
    --muted:       #6b5344;
    --border:      #e8ddd3;
    --bg:          #FAF9F6;
    --bg-card:     #ffffff;
    --px:          clamp(1rem, 4vw, 2rem);
    --font-serif:  'Playfair Display', Georgia, serif;
    --font-sans:   'Inter', Arial, sans-serif;
    --radius:      8px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

/* ── Header ─────────────────────────────────────────────────── */
.book-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: .875rem var(--px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}
.book-header__logo {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark);
}
.book-header__back {
    font-size: .875rem;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: .35rem;
}
.book-header__back svg { width: 16px; height: 16px; }

/* ── Main container ─────────────────────────────────────────── */
.book-main {
    max-width: 860px;
    margin: 0 auto;
    padding: 2.5rem var(--px) 4rem;
}

/* ── Page title ─────────────────────────────────────────────── */
.book-title {
    font-family: var(--font-serif);
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 600;
    color: var(--dark);
    margin-bottom: .5rem;
}
.book-subtitle {
    font-size: .975rem;
    color: var(--muted);
    margin-bottom: 2rem;
    line-height: 1.6;
}

/* ── Slots list ─────────────────────────────────────────────── */
.slots-section { margin-top: 1.5rem; }
.slots-month { font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 1.75rem 0 .75rem; }
.slots-month:first-child { margin-top: 0; }

.slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: .625rem;
}

.slot-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: .875rem .75rem;
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color .18s, background .18s;
    text-decoration: none;
    color: var(--text);
}
.slot-btn:hover { border-color: var(--accent); background: #fdf6ee; text-decoration: none; color: var(--text); }
.slot-btn__day   { font-size: .8rem; color: var(--muted); }
.slot-btn__time  { font-size: 1.2rem; font-weight: 700; color: var(--dark); line-height: 1.2; }
.slot-btn__dur   { font-size: .75rem; color: var(--muted); margin-top: 2px; }

.slots-empty {
    padding: 2rem;
    text-align: center;
    color: var(--muted);
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
}

/* ── Checkout ───────────────────────────────────────────────── */
.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
    align-items: start;
}
@media (max-width: 680px) {
    .checkout-layout { grid-template-columns: 1fr; }
    .order-summary   { order: -1; }
}

.checkout-form h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

/* ── Forms ──────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.125rem; }
.form-group label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--muted);
    margin-bottom: .4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: .7rem .875rem;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    font-size: .95rem;
    font-family: var(--font-sans);
    color: var(--text);
    background: var(--bg-card);
    transition: border-color .18s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 80px; }

.consent-row {
    display: flex;
    align-items: flex-start;
    gap: .625rem;
    font-size: .875rem;
    color: var(--muted);
    margin: 1rem 0 1.5rem;
    line-height: 1.5;
}
.consent-row input[type="checkbox"] {
    width: auto;
    flex-shrink: 0;
    margin-top: 3px;
    accent-color: var(--accent);
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .75rem 1.5rem;
    border-radius: 6px;
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid transparent;
    transition: background .18s, color .18s, border-color .18s;
    text-decoration: none;
    font-family: var(--font-sans);
}
.btn-primary   { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; text-decoration: none; }
.btn-block     { width: 100%; }
.btn-outline   { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-sm        { padding: .45rem .875rem; font-size: .85rem; }
.btn-danger    { background: #c0392b; color: #fff; border-color: #c0392b; }
.btn-danger:hover { background: #a93226; color: #fff; }
button.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ── Order summary ──────────────────────────────────────────── */
.order-summary {
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    position: sticky;
    top: 72px;
}
.order-summary h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 1rem;
    padding-bottom: .75rem;
    border-bottom: 1px solid var(--border);
}
.order-summary__item {
    display: flex;
    justify-content: space-between;
    font-size: .9rem;
    color: var(--muted);
    margin-bottom: .5rem;
}
.order-summary__item strong { color: var(--text); }
.order-summary__total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
    margin-top: .875rem;
    padding-top: .875rem;
    border-top: 1px solid var(--border);
}
.order-summary__total-price { color: var(--accent); font-size: 1.25rem; }
.order-summary__note { font-size: .78rem; color: var(--muted); margin-top: .875rem; line-height: 1.5; }

/* ── Alerts ─────────────────────────────────────────────────── */
.alert {
    padding: .875rem 1rem;
    border-radius: 6px;
    font-size: .9rem;
    margin-bottom: 1.25rem;
    line-height: 1.55;
}
.alert-error   { background: #fdecea; border: 1px solid #f5c2be; color: #b71c1c; }
.alert-success { background: #e8f5e9; border: 1px solid #a8d5b5; color: #1b5e20; }
.alert-info    { background: #e3f2fd; border: 1px solid #b3d4f5; color: #0d47a1; }
.alert p { margin: 4px 0; }

/* ── Success page ───────────────────────────────────────────── */
.success-page {
    max-width: 560px;
    margin: 4rem auto;
    padding: 0 var(--px);
    text-align: center;
}
.success-page__icon { font-size: 3rem; margin-bottom: 1rem; }
.success-page h1 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    color: var(--dark);
    margin-bottom: .875rem;
}
.success-page p  { color: var(--muted); margin-bottom: 1rem; line-height: 1.65; }
.success-page .meet-link {
    display: inline-block;
    margin: 1rem 0;
    padding: .875rem 2rem;
    background: var(--accent);
    color: #fff;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
}
.success-page .meet-link:hover { background: var(--accent-dark); text-decoration: none; }

/* ── Price badge ─────────────────────────────────────────────── */
.price-badge {
    display: inline-block;
    font-size: .78rem;
    color: var(--accent-dark);
    font-style: italic;
    margin-left: .375rem;
}

/* ── Footer ─────────────────────────────────────────────────── */
.book-footer {
    text-align: center;
    padding: 1.5rem var(--px);
    font-size: .8rem;
    color: var(--muted);
    border-top: 1px solid var(--border);
}
.book-footer a { color: var(--muted); text-decoration: underline; }