:root {
    --nb-green:     #0B5A38;
    --nb-green-lt:  #e8f3ee;
    --nb-gold:      #A9822B;
    --nb-ink:       #222;
    --nb-border:    #d0d0d0;
    --nb-radius:    6px;
}
.nb-form-wrap { max-width: 820px; margin: 0 auto; font-family: inherit; }

/* ── Progress bar ─────────────────────────────────────────────────── */
.nb-progress {
    display: flex;
    align-items: center;
    margin-bottom: 36px;
}
.nb-progress__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex: none;
}
.nb-progress__circle {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 2px solid var(--nb-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: #aaa;
    background: #fff;
    transition: all .2s;
}
.nb-progress__step.is-active .nb-progress__circle {
    border-color: var(--nb-green);
    color: var(--nb-green);
}
.nb-progress__step.is-done .nb-progress__circle {
    border-color: var(--nb-green);
    background: var(--nb-green);
    color: #fff;
}
.nb-progress__label { font-size: 11px; color: #666; white-space: nowrap; }
.nb-progress__step.is-active .nb-progress__label { color: var(--nb-green); font-weight: 600; }
.nb-progress__line { flex: 1; height: 2px; background: var(--nb-border); margin: 0 6px; margin-top: -20px; }

/* ── Errors ───────────────────────────────────────────────────────── */
.nb-errors {
    background: #fff0f0;
    border: 1px solid #f5c0c0;
    border-radius: var(--nb-radius);
    padding: 12px 16px;
    margin-bottom: 20px;
    color: #8b0000;
}
.nb-errors ul { margin: 0; padding-left: 20px; }
.nb-errors li { margin: 4px 0; font-size: 14px; }

/* ── Step ─────────────────────────────────────────────────────────── */
.nb-step h2 {
    font-size: 20px;
    color: var(--nb-green);
    margin: 0 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--nb-green-lt);
}
.nb-optional { font-size: 14px; font-weight: 400; color: #888; }

/* ── Grid ─────────────────────────────────────────────────────────── */
.nb-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 24px;
}
@media ( max-width: 600px ) { .nb-grid { grid-template-columns: 1fr; } }

/* ── Field ────────────────────────────────────────────────────────── */
.nb-field { display: flex; flex-direction: column; gap: 5px; }
.nb-field--full { grid-column: 1 / -1; }
.nb-field label { font-size: 13px; font-weight: 600; color: #444; }
.nb-req { color: #c00; }
.nb-field input,
.nb-field select,
.nb-field textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--nb-border);
    border-radius: var(--nb-radius);
    font-size: 15px;
    color: var(--nb-ink);
    transition: border-color .15s;
}
.nb-field input:focus,
.nb-field select:focus,
.nb-field textarea:focus {
    outline: none;
    border-color: var(--nb-green);
    box-shadow: 0 0 0 3px rgba(11,90,56,.12);
}
.nb-field textarea { resize: vertical; }

/* ── Calendar ─────────────────────────────────────────────────────── */
.nb-calendar-wrap { display: flex; gap: 28px; flex-wrap: wrap; margin-bottom: 20px; }
.nb-calendar {
    border: 1px solid var(--nb-border);
    border-radius: var(--nb-radius);
    overflow: hidden;
    min-width: 280px;
}
.nb-cal-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--nb-green);
    color: #fff;
    padding: 10px 14px;
}
.nb-cal-prev, .nb-cal-next {
    background: none;
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    padding: 0 6px;
}
.nb-cal-month-label { font-weight: 700; font-size: 15px; }
.nb-cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0;
}
.nb-cal-dow {
    text-align: center;
    font-size: 11px;
    font-weight: 700;
    color: #666;
    padding: 8px 0;
    background: #f5f5f5;
}
.nb-cal-cell {
    text-align: center;
    padding: 8px 0;
    font-size: 13px;
    cursor: pointer;
    border-top: 1px solid #f0f0f0;
    transition: background .1s;
}
.nb-cal-cell:hover:not(.is-disabled):not(.is-empty) { background: var(--nb-green-lt); }
.nb-cal-cell.is-empty { cursor: default; }
.nb-cal-cell.is-disabled { color: #ccc; cursor: default; }
.nb-cal-cell.is-today { font-weight: 700; color: var(--nb-green); }
.nb-cal-cell.is-selected { background: var(--nb-green); color: #fff; border-radius: 50%; }
.nb-cal-cell.is-full { background: #fafafa; color: #ccc; cursor: not-allowed; }

/* ── Slots ────────────────────────────────────────────────────────── */
.nb-slots { min-width: 180px; }
.nb-slots h3 { font-size: 14px; color: var(--nb-green); margin-bottom: 10px; }
.nb-slots__grid { display: flex; flex-direction: column; gap: 8px; }
.nb-slot {
    padding: 10px 18px;
    border: 2px solid var(--nb-border);
    border-radius: var(--nb-radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    background: #fff;
    transition: all .15s;
}
.nb-slot:hover { border-color: var(--nb-green); color: var(--nb-green); }
.nb-slot.is-selected { border-color: var(--nb-green); background: var(--nb-green); color: #fff; }

/* ── Captcha ──────────────────────────────────────────────────────── */
.nb-captcha { margin-top: 8px; }

/* ── Payment ──────────────────────────────────────────────────────── */
.nb-payment-opts { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.nb-pay-card { cursor: pointer; }
.nb-pay-card input { display: none; }
.nb-pay-card__inner {
    display: flex;
    flex-direction: column;
    gap: 4px;
    border: 2px solid var(--nb-border);
    border-radius: var(--nb-radius);
    padding: 14px 20px;
    min-width: 160px;
    transition: all .15s;
}
.nb-pay-card__inner strong { font-size: 15px; }
.nb-pay-card__inner span  { font-size: 12px; color: #777; }
.nb-pay-card input:checked + .nb-pay-card__inner {
    border-color: var(--nb-green);
    background: var(--nb-green-lt);
}

/* ── Summary ──────────────────────────────────────────────────────── */
.nb-summary {
    background: var(--nb-green-lt);
    border: 1px solid rgba(11,90,56,.2);
    border-radius: var(--nb-radius);
    padding: 16px 20px;
    margin-top: 20px;
}
.nb-summary h3 { margin: 0 0 10px; color: var(--nb-green); font-size: 14px; text-transform: uppercase; letter-spacing: .06em; }
.nb-summary p  { margin: 4px 0; font-size: 14px; }

/* ── Actions ──────────────────────────────────────────────────────── */
.nb-form__actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}
.nb-btn {
    padding: 11px 28px;
    border-radius: var(--nb-radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    display: inline-block;
    transition: opacity .15s;
}
.nb-btn:hover { opacity: .88; }
.nb-btn--primary { background: var(--nb-green); color: #fff; }
.nb-btn--secondary { background: #fff; color: var(--nb-ink); border: 1px solid var(--nb-border); }

/* ── Success ──────────────────────────────────────────────────────── */
.nb-success {
    text-align: center;
    padding: 40px 20px;
}
.nb-success__icon {
    width: 64px; height: 64px;
    background: var(--nb-green);
    color: #fff;
    border-radius: 50%;
    font-size: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.nb-success h2 { color: var(--nb-green); margin-bottom: 12px; }
.nb-success p  { font-size: 15px; margin-bottom: 10px; }