:root {
  --nbf-primary: #b8876b;
  --nbf-primary-soft: color-mix(in srgb, var(--nbf-primary) 10%, #ffffff);
  --nbf-primary-mid: color-mix(in srgb, var(--nbf-primary) 18%, #ffffff);
  --nbf-text: #221b17;
  --nbf-muted: #7d6f66;
  --nbf-line: #eadfd6;
  --nbf-bg: #fffaf6;
  --nbf-card: #ffffff;
  --nbf-shadow: 0 18px 50px rgba(55, 38, 28, .10);
}

.nbf-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 16px 158px;
  font-family: inherit;
  color: var(--nbf-text);
  position: relative;
}

.nbf-wrap * { box-sizing: border-box; }

.nbf-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 24px;
  position: relative;
}

.nbf-steps button {
  position: relative;
  min-height: 72px;
  padding: 14px 14px 14px 54px;
  border: 1px solid var(--nbf-line);
  background: rgba(255,255,255,.92);
  color: #625247;
  border-radius: 22px;
  cursor: pointer;
  font-size: 17px;
  line-height: 1.2;
  font-weight: 850;
  text-align: left;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease, background .22s ease;
  box-shadow: 0 10px 26px rgba(55, 38, 28, .05);
}

.nbf-steps button::before {
  content: attr(data-step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #f3ebe4;
  color: var(--nbf-primary);
  font-size: 15px;
  font-weight: 900;
}

.nbf-steps button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(55, 38, 28, .10);
}

.nbf-steps button.active {
  background: linear-gradient(135deg, var(--nbf-primary), color-mix(in srgb, var(--nbf-primary) 72%, #2c211c));
  color: #fff;
  border-color: var(--nbf-primary);
}

.nbf-steps button.active::before {
  background: rgba(255,255,255,.22);
  color: #fff;
}

.nbf-steps button:disabled {
  opacity: .46;
  cursor: not-allowed;
  box-shadow: none;
}

.nbf-grid { display: block; }

.nbf-main {
  width: 100%;
  background: radial-gradient(circle at top left, var(--nbf-primary-soft), #fff 42%);
  border: 1px solid var(--nbf-line);
  border-radius: 30px;
  padding: 34px;
  box-shadow: var(--nbf-shadow);
  min-height: 570px;
  position: relative;
  overflow: hidden;
}

.nbf-main::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.25), rgba(255,255,255,0));
  pointer-events: none;
}

.nbf-step, .nbf-step-actions { position: relative; z-index: 1; }

.nbf-head {
  margin-bottom: 24px;
  max-width: 780px;
}

.nbf-head h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  letter-spacing: -.04em;
  line-height: 1;
  color: var(--nbf-text);
}

.nbf-head p:not(.nbf-kicker),
.nbf-muted {
  color: var(--nbf-muted);
  font-size: 17px;
}

.nbf-kicker {
  margin: 0 0 10px;
  color: var(--nbf-primary);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: .16em;
  font-weight: 950;
}

.nbf-step { display: none; animation: nbfFadeUp .28s ease both; }
.nbf-step.active { display: block; }

@keyframes nbfFadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.nbf-loading,
.nbf-inline-loader {
  color: var(--nbf-muted);
  font-size: 18px;
  font-weight: 750;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nbf-loading::before,
.nbf-inline-loader::before {
  content: "";
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 3px solid var(--nbf-primary-mid);
  border-top-color: var(--nbf-primary);
  animation: nbfSpin .75s linear infinite;
}

@keyframes nbfSpin { to { transform: rotate(360deg); } }

.nbf-service-group {
  margin-bottom: 30px;
  background: rgba(255,255,255,.78);
  border: 1px solid rgba(234,223,214,.92);
  border-radius: 24px;
  padding: 18px;
}

.nbf-service-group h3 {
  margin: 0 0 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid #f0e6dd;
  font-size: 25px;
  line-height: 1.15;
}

.nbf-service-card {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--nbf-line);
  border-radius: 20px;
  margin-bottom: 12px;
  cursor: pointer;
  background: #fff;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}

.nbf-service-card::after {
  content: "+";
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #f7f0eb;
  color: var(--nbf-primary);
  font-size: 23px;
  font-weight: 850;
}

.nbf-service-card:has(input:checked)::after { content: "✓"; background: var(--nbf-primary); color: #fff; font-size: 18px; }

.nbf-service-card:hover,
.nbf-service-card:has(input:checked),
.nbf-tech-card:hover,
.nbf-tech-card.selected,
.nbf-slot.selected {
  border-color: var(--nbf-primary);
  background: var(--nbf-primary-soft);
  box-shadow: 0 12px 28px rgba(55, 38, 28, .08);
  transform: translateY(-1px);
}

.nbf-service-card input {
  width: 22px;
  height: 22px;
  accent-color: var(--nbf-primary);
}

.nbf-service-card strong,
.nbf-tech-card strong {
  display: block;
  font-size: 20px;
  line-height: 1.2;
}

.nbf-service-card small,
.nbf-sticky-summary small {
  display: block;
  opacity: .76;
  margin-top: 7px;
  font-size: 15px;
  font-weight: 650;
}

.nbf-tech-card {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--nbf-line);
  border-radius: 24px;
  margin-bottom: 14px;
  cursor: pointer;
  background: #fff;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}

.nbf-tech-card::after {
  content: "Select";
  margin-left: auto;
  padding: 9px 13px;
  border-radius: 999px;
  background: #f7f0eb;
  color: var(--nbf-primary);
  font-size: 14px;
  font-weight: 900;
}

.nbf-tech-card.selected::after { content: "Selected"; background: var(--nbf-primary); color: #fff; }

.nbf-tech-card img,
.nbf-avatar-placeholder {
  width: 74px;
  height: 74px;
  object-fit: cover;
  border-radius: 50%;
  flex: 0 0 74px;
  box-shadow: 0 8px 22px rgba(55,38,28,.10);
}

.nbf-avatar-placeholder {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--nbf-primary-soft);
  color: var(--nbf-primary);
  font-weight: 950;
  font-size: 30px;
}

.nbf-field-label {
  display: block;
  font-weight: 900;
  margin-bottom: 10px;
  font-size: 18px;
}

#nbf-date {
  padding: 18px 20px;
  border: 1px solid var(--nbf-line);
  border-radius: 18px;
  margin-bottom: 22px;
  width: min(390px, 100%);
  background: #fff;
  font-size: 18px;
  font-weight: 750;
  color: var(--nbf-text);
}

#nbf-times {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  min-height: 56px;
}

.nbf-slot {
  padding: 10px;
  border: 1px solid var(--nbf-line);
  border-radius: 18px;
  background: #fff;
  cursor: pointer;
  font-size: 17px;
  font-weight: 900;
  color: var(--nbf-text);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
}

.nbf-slot:disabled {
  background: #efefef;
  color: #aaa;
  border-color: #e2e2e2;
  cursor: not-allowed;
  text-decoration: line-through;
  box-shadow: none;
  transform: none;
}

.nbf-confirm-box {
  background: rgba(255,255,255,.86);
  border: 1px solid var(--nbf-line);
  border-radius: 24px;
  padding: 24px;
  margin-bottom: 22px;
  font-size: 17px;
}

.nbf-confirm-box h3 { margin-top: 0; font-size: 28px; }
.nbf-confirm-box li { margin-bottom: 8px; }

.nbf-form {
  display: grid;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--nbf-line);
  border-radius: 24px;
  padding: 22px;
}

.nbf-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.nbf-form input,
.nbf-form textarea {
  padding: 18px 20px;
  border: 1px solid var(--nbf-line);
  border-radius: 18px;
  width: 100%;
  background: #fffaf7;
  font-size: 18px;
  color: var(--nbf-text);
  outline: none;
}

.nbf-form input:focus,
.nbf-form textarea:focus,
#nbf-date:focus {
  border-color: var(--nbf-primary);
  box-shadow: 0 0 0 4px var(--nbf-primary-soft);
}

.nbf-form textarea { min-height: 120px; resize: vertical; }

.nbf-terms {
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 17px;
  font-weight: 700;
}

.nbf-terms input {
  width: 21px;
  height: 21px;
  accent-color: var(--nbf-primary);
}

#nbf-submit,
.nbf-nav-btn {
  min-height: 58px;
  padding: 10px;
  border: none;
  background: var(--nbf-primary);
  color: #fff;
  border-radius: 18px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 950;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}

.nbf-next::after { content: " →"; }
.nbf-prev { background: #f2ebe5; color: #34261c; }
.nbf-prev::before { content: "← "; }

#nbf-submit:hover,
.nbf-nav-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(29, 23, 20, .18);
}

#nbf-submit:disabled,
.nbf-nav-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }

.nbf-step-actions {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--nbf-line);
}

#nbf-message { font-weight: 850; font-size: 17px; min-height: 24px; }
#nbf-message.success { color: #167a3a; }
#nbf-message.error { color: #b3261e; }

.nbf-sticky-summary {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9998;
  background: rgba(255, 255, 255, .94);
  border-top: 4px solid var(--nbf-primary);
  box-shadow: 0 -18px 44px rgba(52, 38, 28, .18);
  backdrop-filter: blur(16px);
}

.nbf-sticky-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 18px;
  display: grid;
  grid-template-columns: minmax(280px, 1.15fr) 2fr;
  gap: 20px;
  align-items: center;
}

.nbf-sticky-label {
  display: block;
  color: var(--nbf-primary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .13em;
  font-weight: 950;
  margin-bottom: 5px;
}

.nbf-sticky-services {
  max-height: 94px;
  overflow: auto;
  padding-right: 8px;
}

.nbf-sticky-services p { margin: 5px 0; font-size: 16px; }

.nbf-sticky-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.nbf-sticky-meta p {
  margin: 0;
  background: #fffaf7;
  border: 1px solid var(--nbf-line);
  border-radius: 16px;
  padding: 12px;
  font-size: 15px;
  min-height: 64px;
}

.nbf-sticky-meta strong {
  display: block;
  color: var(--nbf-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 4px;
}

.nbf-app-loading .nbf-main::after {
  content: "Loading...";
  position: absolute;
  inset: 0;
  z-index: 4;
  background: rgba(255,255,255,.62);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--nbf-primary);
  font-size: 24px;
  font-weight: 950;
}

@media (max-width: 980px) {
  .nbf-steps { grid-template-columns: repeat(2, 1fr); }
  #nbf-times { grid-template-columns: repeat(3, 1fr); }
  .nbf-sticky-inner { grid-template-columns: 1fr; }
  .nbf-sticky-meta { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nbf-wrap { padding: 10px; }
  .nbf-main { padding: 22px; border-radius: 24px; }
  .nbf-head h2 { font-size: 34px; }
  .nbf-steps { gap: 10px; }
  .nbf-steps button { min-height: 62px; padding-left: 48px; font-size: 15px; border-radius: 18px; }
  .nbf-service-card { grid-template-columns: 26px 1fr; }
  .nbf-service-card::after { display: none; }
  .nbf-tech-card { padding: 16px; }
  .nbf-tech-card::after { display: none; }
  #nbf-times { grid-template-columns: repeat(2, 1fr); }
  .nbf-form-row { grid-template-columns: 1fr; }
  .nbf-step-actions { position: sticky; background: rgba(255,255,255,.92); backdrop-filter: blur(8px); padding: 12px 0 0; z-index: 5; }
  .nbf-nav-btn, #nbf-submit { width: 100%; }
}

@media (max-width: 480px) {
  .nbf-steps { grid-template-columns: 1fr; }
  .nbf-sticky-meta { grid-template-columns: 1fr 1fr; }
  .nbf-sticky-meta p { min-height: 58px; padding: 10px; }
}

.nbf-success-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  padding: 20px;
}

.nbf-success-modal.active {
  display: flex;
}

.nbf-success-dialog {
  width: min(520px, 100%);
  background: #fff;
  border-radius: 28px;
  padding: 32px 28px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
  text-align: center;
  position: relative;
}

.nbf-success-close {
  position: absolute;
  top: 18px;
  right: 18px;
  border: none;
  background: transparent;
  color: #333;
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
}

.nbf-success-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(184, 135, 107, 0.12);
  color: var(--nbf-primary);
  font-size: 34px;
  font-weight: 900;
}

.nbf-success-dialog h2 {
  margin: 0 0 14px;
  font-size: 30px;
  color: var(--nbf-text);
}

.nbf-success-dialog p {
  margin: 0 0 28px;
  color: var(--nbf-muted);
  font-size: 17px;
  line-height: 1.7;
}

.nbf-success-actions {
  display: grid;
  gap: 12px;
}

.nbf-success-button {
  border: none;
  background: var(--nbf-primary);
  color: #fff;
  border-radius: 16px;
  padding: 16px 20px;
  font-size: 17px;
  font-weight: 900;
  cursor: pointer;
}

@media (max-width: 640px) {
  .nbf-success-dialog {
    padding: 24px 20px;
    border-radius: 22px;
  }

  .nbf-success-dialog h2 {
    font-size: 26px;
  }

  .nbf-success-button {
    width: 100%;
  }
}

/* v1.4 responsive UX polish */
#nbf-services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 20px;
  align-items: start;
}

.nbf-service-group {
  margin-bottom: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nbf-service-group-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid #f0e6dd;
}

.nbf-service-group-head h3 {
  border: 0;
  padding-bottom: 0;
  margin: 0;
}

.nbf-service-group-head small {
  white-space: nowrap;
  color: var(--nbf-primary);
  background: var(--nbf-primary-soft);
  border-radius: 999px;
  padding: 7px 10px;
  font-weight: 900;
  font-size: 13px;
}

.nbf-service-card {
  margin-bottom: 0;
}

#nbf-techs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.nbf-tech-card {
  margin-bottom: 0;
  min-height: 118px;
}

.nbf-tech-info small {
  display: block;
  margin-top: 6px;
  color: var(--nbf-muted);
  font-size: 14px;
  font-weight: 750;
}

.nbf-tech-card.disabled {
  opacity: .48;
  cursor: not-allowed;
  filter: grayscale(.35);
  background: #f3f0ed;
  box-shadow: none;
}

.nbf-tech-card.disabled:hover {
  transform: none;
  border-color: var(--nbf-line);
  background: #f3f0ed;
  box-shadow: none;
}

.nbf-tech-card.disabled::after {
  content: "Unavailable";
  background: #e6e0da;
  color: #8b7c72;
}

.nbf-time-layout {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 22px;
  align-items: start;
}

.nbf-date-panel,
.nbf-time-panel {
  background: rgba(255,255,255,.86);
  border: 1px solid var(--nbf-line);
  border-radius: 26px;
  padding: 22px;
  box-shadow: 0 12px 28px rgba(55, 38, 28, .06);
}

#nbf-date {
  width: 100%;
  margin-bottom: 16px;
  font-size: 20px;
}

.nbf-date-shortcuts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.nbf-date-chip {
  border: 1px solid var(--nbf-line);
  background: #fff;
  border-radius: 16px;
  padding: 12px 10px;
  cursor: pointer;
  text-align: left;
  transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
}

.nbf-date-chip strong,
.nbf-date-chip small {
  display: block;
}

.nbf-date-chip strong {
  font-size: 16px;
  color: var(--nbf-text);
}

.nbf-date-chip small {
  margin-top: 3px;
  font-size: 13px;
  color: var(--nbf-muted);
  font-weight: 800;
}

.nbf-date-chip:hover,
.nbf-date-chip.active {
  border-color: var(--nbf-primary);
  background: var(--nbf-primary-soft);
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(55, 38, 28, .08);
}

.nbf-time-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.nbf-time-title span {
  font-size: 24px;
  font-weight: 950;
}

.nbf-time-title small {
  color: var(--nbf-muted);
  font-weight: 850;
}

#nbf-times {
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

.nbf-slot {
  min-height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nbf-slot span {
  display: block;
  font-size: 15px;
}

.nbf-slot.blocked-by-current {
  opacity: .38;
  background: #eee8e2;
  border-color: #e0d5ca;
  color: #9b8c82;
  cursor: not-allowed;
  pointer-events: none;
  text-decoration: line-through;
}

.nbf-slot.selected {
  background: var(--nbf-primary);
  color: #fff;
  border-color: var(--nbf-primary);
}

@media (max-width: 980px) {
  #nbf-services { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nbf-time-layout { grid-template-columns: 1fr; }
  .nbf-date-shortcuts { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  #nbf-services,
  #nbf-techs {
    grid-template-columns: 1fr;
  }

  .nbf-service-group {
    padding: 14px;
    border-radius: 20px;
  }

  .nbf-service-card {
    padding: 16px 14px;
    grid-template-columns: 24px 1fr auto;
    gap: 11px;
  }

  .nbf-service-card::after {
    display: inline-flex;
    width: 30px;
    height: 30px;
    font-size: 20px;
  }

  .nbf-service-card strong,
  .nbf-tech-card strong {
    font-size: 18px;
  }

  .nbf-date-panel,
  .nbf-time-panel {
    padding: 16px;
    border-radius: 22px;
  }

  .nbf-date-shortcuts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #nbf-times {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .nbf-slot {
    min-height: 58px;
    border-radius: 16px;
  }
}