.calc-ai-hostel-boiler,
.calc-ai-boiler-power,
.calc-ai-aircon,
.calc-ai-radiator-sections,
.calc-ai-widget {
  max-width: 860px;
  margin: 24px auto;
  padding: 22px;
  background: #f8fbfd;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbfd 100%);
  border: 1px solid #cfe0ea;
  border-radius: 22px;
  box-shadow: 0 16px 40px rgba(31, 53, 80, 0.10);
  font-family: Arial, Helvetica, sans-serif;
  color: #1e3550;
}

.calc-ai-hostel-boiler *,
.calc-ai-boiler-power *,
.calc-ai-aircon *,
.calc-ai-radiator-sections *,
.calc-ai-widget * {
  box-sizing: border-box;
}

.calc-ai-brand {
  display: table;
  width: 100%;
  margin: 0 0 14px 0;
  padding: 0 0 10px 0;
  border-bottom: 1px solid #e3eef3;
}

.calc-ai-brand > img,
.calc-ai-brand > .calc-ai-brand-logo {
  display: table-cell;
  width: 104px;
  vertical-align: middle;
}

.calc-ai-brand-logo,
.calc-ai-brand img {
  display: block;
  width: 92px;
  height: auto;
  margin: 0;
  border: 0;
}

.calc-ai-brand-text {
  display: table-cell;
  vertical-align: middle;
  padding-left: 10px;
}

.calc-ai-brand-kicker {
  display: block;
  margin: 0 0 3px 0;
  color: #5e7388;
  font-size: 10px;
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: bold;
}

.calc-ai-brand-title {
  display: block;
  margin: 0;
  color: #0083A2;
  font-size: 26px;
  line-height: 1.08;
  font-weight: bold;
}

.calc-ai-layout {
  width: 100%;
  overflow: hidden;
}

.calc-ai-main {
  float: left;
  width: 61%;
}

.calc-ai-side {
  float: right;
  width: 35%;
}

.slider-group {
  margin: 0 0 12px 0;
}

.slider-card,
.result-main,
.stat,
.status,
.calc-ai-panel,
.calc-ai-result,
.calc-ai-status,
.calc-ai-email-box,
.calc-ai-card,
.calc-ai-visual-result {
  background: #ffffff;
  border: 1px solid #d5e5ed;
  border-radius: 18px;
  padding: 16px 18px;
  margin: 0 0 12px 0;
}

.calc-ai-control {
  margin: 0 0 14px 0;
}

.calc-ai-control:last-child {
  margin-bottom: 0;
}

.slider-header,
.calc-ai-control-header {
  width: 100%;
  overflow: hidden;
  margin: 0 0 8px 0;
}

.slider-header > div:first-child,
.calc-ai-control-header > div:first-child {
  float: left;
  margin: 0;
  color: #1e3550;
  font-size: 15px;
  line-height: 1.2;
  font-weight: bold;
}

.slider-value,
.calc-ai-value {
  float: right;
  margin: 0;
  color: #B93A07;
  font-size: 20px;
  line-height: 1.1;
  font-weight: bold;
}

.slider-desc,
.calc-ai-desc,
.calc-ai-summary {
  margin: 0 0 8px 0;
  color: #5e7388;
  font-size: 13px;
  line-height: 1.4;
}

.calc-ai-hostel-boiler input[type="range"],
.calc-ai-boiler-power input[type="range"],
.calc-ai-aircon input[type="range"],
.calc-ai-radiator-sections input[type="range"],
.calc-ai-widget input[type="range"] {
  display: block;
  width: 100%;
  margin: 4px 0 0 0;
}

.scale,
.calc-ai-scale {
  width: 100%;
  overflow: hidden;
  margin: 6px 0 0 0;
  color: #5e7388;
  font-size: 11px;
  line-height: 1.2;
}

.scale span:first-child,
.calc-ai-scale span:first-child {
  float: left;
}

.scale span:last-child,
.calc-ai-scale span:last-child {
  float: right;
}

.result-main small,
.calc-ai-kicker {
  display: block;
  margin: 0 0 6px 0;
  color: #5e7388;
  font-size: 11px;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.calc-ai-recommendation {
  margin: 6px 0 8px 0;
  color: #1e3550;
  font-size: 30px;
  line-height: 1.05;
  font-weight: bold;
}

.calc-ai-power-result,
.calc-ai-total-sections {
  margin: 6px 0 10px 0;
  color: #1e3550;
  font-size: 38px;
  line-height: 1.02;
  font-weight: bold;
}

.cards,
.calc-ai-stats {
  margin: 0 0 10px 0;
}

.calc-ai-hostel-boiler .cards {
  width: 100%;
  overflow: hidden;
}

.calc-ai-hostel-boiler .stat {
  float: left;
  width: 48.6%;
  margin-right: 2.8%;
  min-height: 92px;
}

.calc-ai-hostel-boiler .stat:nth-child(2n) {
  margin-right: 0;
}

.stat span,
.calc-ai-stat span {
  display: block;
  margin: 0 0 6px 0;
  color: #5e7388;
  font-size: 11px;
  line-height: 1.2;
  text-transform: uppercase;
}

.calc-ai-stat {
  padding: 14px;
  border: 1px solid #d5e5ed;
  border-radius: 14px;
  background: #ffffff;
  margin: 0 0 10px 0;
}

.calc-ai-stat:last-child {
  margin-bottom: 0;
}

.calc-ai-daily-need,
.calc-ai-heat-time,
.calc-ai-volume-coverage,
.calc-ai-power-coverage,
.calc-ai-volume-result,
.calc-ai-specific-result,
.calc-ai-reserve-result,
.calc-ai-total-power,
.calc-ai-radiator-power {
  color: #1e3550;
  font-size: 22px;
  line-height: 1.05;
  font-weight: bold;
}

.status,
.calc-ai-status {
  font-size: 13px;
  line-height: 1.45;
  font-weight: bold;
}

.status.ok,
.calc-ai-status.ok {
  background: #eef8f4;
  border-color: #b9dfcf;
  color: #1f7a63;
}

.status.warn,
.calc-ai-status.warn {
  background: #fdf1ec;
  border-color: #e7c0b2;
  color: #B93A07;
}

.calc-ai-group-title {
  margin: 0 0 10px 0;
  color: #1e3550;
  font-size: 14px;
  line-height: 1.2;
  font-weight: bold;
}

.calc-ai-radio-grid {
  line-height: 1.5;
}

.calc-ai-radio-grid input[type="radio"] {
  display: inline-block;
  margin: 0 4px 0 0;
  vertical-align: middle;
}

.calc-ai-radio-grid input[type="radio"] + span {
  display: inline-block;
  margin: 0 12px 0 0;
  vertical-align: middle;
  color: #1e3550;
  font-size: 13px;
  line-height: 1.3;
}

.calc-ai-check-grid {
  display: block;
}

.calc-ai-check-option {
  display: block;
  margin: 0 0 8px 0;
  padding: 10px 12px;
  border: 1px solid #d5e5ed;
  border-radius: 12px;
  background: #fbfdfe;
  color: #1e3550;
  font-size: 13px;
  line-height: 1.3;
  cursor: pointer;
}

.calc-ai-check-option:last-child {
  margin-bottom: 0;
}

.calc-ai-check-option input {
  margin-right: 8px;
  vertical-align: middle;
}

.calc-ai-check-option span {
  vertical-align: middle;
}

.calc-ai-tonnage {
  margin: 6px 0 12px 0;
  color: #B93A07;
  font-size: 18px;
  line-height: 1.1;
  font-weight: bold;
}

.calc-ai-aircon .calc-ai-value {
  color: #B93A07 !important;
  font-size: 24px !important;
  line-height: 1.05 !important;
  font-weight: bold !important;
}

.calc-ai-aircon .calc-ai-power-result {
  font-size: 42px !important;
  line-height: 1 !important;
  font-weight: bold !important;
}

.calc-ai-aircon .calc-ai-tonnage {
  color: #1e3550 !important;
  font-size: 20px !important;
  line-height: 1.1 !important;
  font-weight: bold !important;
}

.calc-ai-aircon .calc-ai-visual-caption {
  font-size: 22px !important;
  line-height: 1.05 !important;
  font-weight: bold !important;
}

.calc-ai-aircon .calc-ai-control input[type="range"] {
  display: block !important;
  width: 100% !important;
  min-width: 100% !important;
  max-width: none !important;
  box-sizing: border-box !important;
  margin: 6px 0 0 0 !important;
}

.calc-ai-heating-cost .calc-ai-radio-grid,
.calc-ai-heating-cost .calc-ai-check-grid {
  display: block;
  line-height: 1.6;
}

.calc-ai-heating-cost .calc-ai-radio-option,
.calc-ai-heating-cost .calc-ai-check-option {
  display: block;
  margin: 0 0 8px 0;
  padding: 10px 12px;
  border: 1px solid #d5e5ed;
  border-radius: 12px;
  background: #fbfdfe;
  color: #1e3550;
  font-size: 13px;
  line-height: 1.3;
  cursor: pointer;
}

.calc-ai-heating-cost .calc-ai-radio-option:last-child,
.calc-ai-heating-cost .calc-ai-check-option:last-child {
  margin-bottom: 0;
}

.calc-ai-heating-cost .calc-ai-radio-option input,
.calc-ai-heating-cost .calc-ai-check-option input {
  margin-right: 8px;
  vertical-align: middle;
}

.calc-ai-heating-cost .calc-ai-radio-option span,
.calc-ai-heating-cost .calc-ai-check-option span {
  vertical-align: middle;
}

.calc-ai-heating-cost .calc-ai-subpanel {
  margin: 0 0 12px 0;
  padding: 16px 18px;
  border: 1px dashed #b9cfdb;
  border-radius: 16px;
  background: #f8fbfd;
}

.calc-ai-heating-cost .calc-ai-subpanel[hidden] {
  display: none;
}

.calc-ai-heating-cost .calc-ai-value {
  color: #B93A07 !important;
  font-size: 24px !important;
  line-height: 1.05 !important;
  font-weight: bold !important;
}

.calc-ai-heating-cost .calc-ai-power-result {
  font-size: 32px !important;
  line-height: 1 !important;
  font-weight: bold !important;
}

.calc-ai-heating-cost .calc-ai-monthly-cost {
  margin: 8px 0 12px 0;
  color: #B93A07;
  font-size: 32px;
  line-height: 1;
  font-weight: bold;
}

.calc-ai-heating-cost .calc-ai-tonnage {
  color: #1e3550 !important;
  font-size: 20px !important;
  line-height: 1.1 !important;
  font-weight: bold !important;
}

.calc-ai-heating-cost .calc-ai-visual-caption {
  font-size: 22px !important;
  line-height: 1.05 !important;
  font-weight: bold !important;
}

.calc-ai-heating-cost .calc-ai-control input[type="range"] {
  display: block !important;
  width: 100% !important;
  min-width: 100% !important;
  max-width: none !important;
  box-sizing: border-box !important;
  margin: 6px 0 0 0 !important;
}

.calc-ai-room-result {
  margin: 8px 0 0 0;
  padding: 12px 14px;
  border: 1px solid #d5e5ed;
  border-radius: 12px;
  background: #fbfdfe;
  color: #5e7388;
  font-size: 13px;
  line-height: 1.35;
}

.calc-ai-room-result span {
  display: block;
  margin: 4px 0 0 0;
  color: #1e3550;
  font-size: 20px;
  line-height: 1.05;
  font-weight: bold;
}

.calc-ai-radiator-sections .calc-ai-room-toggle {
  display: block;
  width: 100%;
  margin: 0 0 10px 0;
  padding: 12px 14px;
  border: 1px dashed #b9cfdb;
  border-radius: 12px;
  background: #f8fbfd;
  color: #1e3550;
  font-size: 13px;
  line-height: 1.35;
  text-align: left;
}

.calc-ai-radiator-sections .calc-ai-room-toggle input[type="checkbox"] {
  display: inline-block;
  width: 16px;
  height: 16px;
  margin: 0 8px 0 0;
  vertical-align: middle;
}

.calc-ai-radiator-sections .calc-ai-room-toggle span {
  display: inline;
  vertical-align: middle;
}

.calc-ai-visual-result {
  background: #ffffff;
}

.calc-ai-visual-track {
  position: relative;
  height: 14px;
  margin: 6px 0 10px 0;
  border-radius: 999px;
  background: #dcecf2;
  background: linear-gradient(90deg, #6bb7d6 0%, #49a57d 52%, #d97a43 100%);
  overflow: hidden;
}

.calc-ai-visual-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 42%;
  background: linear-gradient(90deg, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0.04) 100%);
}

.calc-ai-visual-pointer {
  position: absolute;
  top: 50%;
  left: 42%;
  width: 20px;
  height: 20px;
  margin-left: -10px;
  margin-top: -10px;
  border: 3px solid #1e3550;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 4px 14px rgba(31, 53, 80, 0.18);
}

.calc-ai-visual-labels {
  width: 100%;
  overflow: hidden;
  margin: 0 0 10px 0;
  color: #7a8ea1;
  font-size: 10px;
  line-height: 1.2;
  text-transform: uppercase;
}

.calc-ai-visual-labels span {
  display: block;
  float: left;
  width: 33.33%;
}

.calc-ai-visual-labels span:first-child {
  text-align: left;
}

.calc-ai-visual-labels span:nth-child(2) {
  text-align: center;
}

.calc-ai-visual-labels span:last-child {
  text-align: right;
}

.calc-ai-visual-caption {
  color: #1e3550;
  font-size: 19px;
  line-height: 1.1;
  font-weight: bold;
}

.calc-ai-visual-meta {
  margin: 6px 0 0 0;
  color: #5e7388;
  font-size: 12px;
  line-height: 1.35;
}

.calc-ai-visual-result.low .calc-ai-visual-caption {
  color: #23779a;
}

.calc-ai-visual-result.ok .calc-ai-visual-caption {
  color: #257e63;
}

.calc-ai-visual-result.high .calc-ai-visual-caption {
  color: #b95a26;
}

.calc-ai-email-box {
  display: block;
  width: 100%;
  margin: 0 0 12px 0;
  padding: 14px;
  border: 1px solid #d5e5ed;
  border-radius: 18px;
  background: #ffffff;
}

.calc-ai-email-row {
  display: block;
  width: 100%;
}

.calc-ai-email-box input[type="text"],
.calc-ai-email-box .calc-ai-email-input {
  display: block;
  width: 100%;
  height: 46px;
  margin: 0;
  padding: 0 14px;
  border: 2px solid #9cb7c7;
  border-radius: 12px;
  background: #ffffff;
  color: #1e3550;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 15px;
  line-height: 42px;
  text-align: left;
  outline: none;
}

.calc-ai-email-box button,
.calc-ai-email-box .calc-ai-email-send {
  display: block;
  width: 100%;
  min-width: 0;
  height: 46px;
  margin: 8px 0 0 0;
  padding: 0 14px;
  border: 0;
  border-radius: 12px;
  background: #b93a07;
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
  line-height: 46px;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
}

.calc-ai-email-note {
  padding-top: 8px;
  color: #5e7388;
  font-size: 12px;
  line-height: 1.35;
}

.calc-ai-email-note.error {
  color: #B93A07;
}

.calc-ai-email-note.success {
  color: #1f7a63;
}

.calc-ai-disclaimer {
  margin: 10px 0 0 0;
  padding: 0 2px;
  color: #8ea0af;
  font-size: 11px;
  line-height: 1.4;
}

@media (max-width: 860px) {
  .calc-ai-main,
  .calc-ai-side {
    float: none;
    width: 100%;
  }
}

@media (max-width: 640px) {
  .calc-ai-hostel-boiler,
  .calc-ai-boiler-power,
  .calc-ai-aircon,
  .calc-ai-radiator-sections,
  .calc-ai-widget {
    margin: 18px auto;
    padding: 16px;
    border-radius: 18px;
  }

  .calc-ai-brand {
    display: block;
    margin-bottom: 10px;
  }

  .calc-ai-brand > img,
  .calc-ai-brand > .calc-ai-brand-logo {
    display: block;
    width: 88px;
    margin-bottom: 8px;
  }

  .calc-ai-brand-logo,
  .calc-ai-brand img {
    width: 88px;
  }

  .calc-ai-brand-text {
    display: block;
    padding-left: 0;
  }

  .calc-ai-brand-title {
    font-size: 22px;
  }

  .calc-ai-hostel-boiler .stat {
    float: none;
    width: 100%;
    margin-right: 0;
    min-height: 0;
  }

  .slider-card,
  .result-main,
  .stat,
  .status,
  .calc-ai-panel,
  .calc-ai-result,
  .calc-ai-status,
  .calc-ai-email-box,
  .calc-ai-card,
  .calc-ai-visual-result {
    border-radius: 16px;
    padding: 14px;
  }

  .slider-value,
  .calc-ai-value {
    font-size: 18px;
  }

  .calc-ai-power-result,
  .calc-ai-total-sections {
    font-size: 30px;
  }
}