.calculator-page {
  --calc-bg: #edf3f8;
  --calc-surface: #fff;
  --calc-soft: #edf6fc;
  --calc-text: #101b2b;
  --calc-muted: #5b697a;
  --calc-line: #d5e2ec;
  --calc-primary: #0077c8;
  --calc-primary-dark: #005a99;
  --calc-accent: #11c5ef;
  --calc-shadow: 0 20px 55px rgba(5, 28, 52, .12);
}

.calculator-shell button,
.calculator-shell input,
.calculator-shell select,
.calculator-chart-modal button { font: inherit; }

.calculator-page .nav-brand {
  display: block;
  visibility: visible;
  opacity: 1;
  color: #101b2b;
}

.calculator-shell {
  width: min(1240px, calc(100% - 28px));
  margin: 0 auto 34px;
  padding-top: 102px;
  color: var(--calc-text);
}

.calculator-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px);
  border-radius: 26px;
  color: #fff;
  background: radial-gradient(circle at 90% 12%, rgba(17,197,239,.24), transparent 25rem), linear-gradient(135deg, #03070d 0%, #08131f 56%, #082b45 100%);
  box-shadow: var(--calc-shadow);
}

.calculator-hero::after {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -120px;
  top: -130px;
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(17,197,239,.24), rgba(0,119,200,.04));
}

.calculator-hero__content { position: relative; z-index: 1; max-width: 920px; }
.calculator-hero__brand { display: flex; align-items: center; justify-content: space-between; gap: 22px; margin-bottom: 22px; }
.calculator-brand-logo { display: block; width: min(360px, 68vw); height: auto; filter: drop-shadow(0 10px 28px rgba(0,119,200,.18)); }
.calculator-brand-kicker { max-width: 250px; color: rgba(255,255,255,.72); text-align: right; font-size: 12px; line-height: 1.55; letter-spacing: .08em; text-transform: uppercase; font-weight: 800; }
.calculator-eyebrow { display: inline-flex; align-items: center; padding: 7px 11px; border: 1px solid rgba(17,197,239,.46); border-radius: 999px; background: rgba(0,119,200,.18); font-size: 13px; font-weight: 700; letter-spacing: .07em; }
.calculator-hero h1 { margin: 18px 0 12px; color: #fff; font-size: clamp(30px, 5vw, 52px); line-height: 1.04; letter-spacing: -.04em; }
.calculator-hero p { max-width: 760px; margin: 0; color: rgba(255,255,255,.86); font-size: clamp(16px, 2vw, 19px); line-height: 1.55; }
.calculator-hero__meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.calculator-hero__meta span { padding: 8px 11px; border: 1px solid rgba(255,255,255,.09); border-radius: 10px; color: rgba(255,255,255,.92); background: rgba(3,12,20,.54); font-size: 13px; }

.calculator-layout { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr); gap: 22px; align-items: start; margin-top: 22px; }
.calculator-tools-overview { margin-top: 22px; }
.calculator-tool-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.calculator-tool-card { display: flex; align-items: flex-start; gap: 14px; padding: 18px; border: 1px solid var(--calc-line); border-radius: 16px; background: #f7fafc; }
.calculator-tool-card .calculator-step { margin-top: 2px; }
.calculator-tool-card h3 { margin: 0 0 6px; color: var(--calc-text); font-size: 19px; }
.calculator-tool-card p { margin: 0; color: var(--calc-muted); font-size: 14px; line-height: 1.5; }
.calculator-tool-card .contact-btn { margin-top: 14px; }
.calculator-panel { position: relative; overflow: hidden; border: 1px solid rgba(213,226,236,.96); border-radius: 20px; background: var(--calc-surface); box-shadow: var(--calc-shadow); }
.calculator-panel::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: linear-gradient(90deg, var(--calc-primary), var(--calc-accent)); }
.calculator-form-panel { padding: clamp(20px, 3vw, 32px); }
.calculator-result-panel { position: sticky; top: 90px; padding: 22px; }
.calculator-section + .calculator-section { margin-top: 32px; padding-top: 30px; border-top: 1px solid var(--calc-line); }
.calculator-section-heading { display: flex; align-items: flex-start; gap: 13px; margin-bottom: 20px; }
.calculator-step { display: grid; width: 34px; height: 34px; flex: 0 0 auto; place-items: center; border-radius: 11px; color: var(--calc-primary); background: var(--calc-soft); font-weight: 800; }
.calculator-section-heading h2 { margin: 0 0 4px; color: var(--calc-text); font-size: 21px; line-height: 1.2; }
.calculator-section-heading p { margin: 0; color: var(--calc-muted); font-size: 14px; line-height: 1.45; }

.calculator-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.calculator-field label,
.calculator-fieldset-title { display: block; margin-bottom: 7px; color: #263b52; font-size: 13px; font-weight: 700; }
.calculator-field small { display: block; margin-top: 6px; color: var(--calc-muted); font-size: 12px; line-height: 1.35; }
.calculator-field input,
.calculator-field select { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #cbd7e3; border-radius: 11px; outline: 0; color: var(--calc-text); background: #fff; transition: border-color .15s, box-shadow .15s; }
.calculator-field input:focus,
.calculator-field select:focus { border-color: var(--calc-primary); box-shadow: 0 0 0 4px rgba(0,119,200,.12); }
.calculator-input-unit { position: relative; }
.calculator-input-unit input { padding-right: 58px; }
.calculator-input-unit span { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--calc-muted); font-size: 13px; pointer-events: none; }
.calculator-check-card { display: flex !important; align-items: flex-start; gap: 11px; padding: 13px 14px; border: 1px solid var(--calc-line); border-radius: 12px; background: #fbfdff; }
.calculator-check-card input { width: 18px; min-height: 18px; height: 18px; margin-top: 2px; flex: 0 0 auto; accent-color: var(--calc-primary); }
.calculator-check-card strong { display: block; font-size: 14px; }
.calculator-check-card span span { display: block; margin-top: 3px; color: var(--calc-muted); font-size: 12px; line-height: 1.4; }

.calculator-details { margin-top: 16px; border: 1px solid var(--calc-line); border-radius: 12px; background: #fafcfe; }
.calculator-details summary { padding: 14px 15px; color: #263b52; cursor: pointer; font-weight: 700; }
.calculator-details-content { padding: 0 15px 16px; }
.calculator-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.calculator-button {
  min-height: 40px;
  padding: 9px 14px;
  border: 1px solid var(--calc-line);
  border-radius: 999px;
  color: #425469;
  background: #f7fafc;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  transition: color .2s, background .2s, border-color .2s, transform .2s, box-shadow .2s;
}
.calculator-button:hover { transform: translateY(-1px); }
.calculator-button:active { transform: translateY(0); }
.calculator-button:focus-visible { outline: 0; box-shadow: 0 0 0 4px rgba(0,119,200,.14); }
.calculator-button--primary {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--calc-primary-dark), var(--calc-primary));
  box-shadow: 0 8px 22px rgba(0,111,194,.22);
}
.calculator-button--primary:hover { background: linear-gradient(135deg, #004f87, var(--calc-primary-dark)); }
.calculator-button--secondary { color: var(--calc-primary-dark); }
.calculator-button--secondary:hover { border-color: rgba(0,119,200,.45); background: #fff; }

.calculator-status-box { padding: 13px 14px; border-radius: 12px; color: #075e91; background: #eaf6fd; font-size: 13px; line-height: 1.45; }
.calculator-status-box.warning { color: #774a00; background: #fff7e8; }
.calculator-status-box.danger { color: #7f2b30; background: #fff0f0; }
.calculator-result-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.calculator-result-title h2 { margin: 0; color: var(--calc-text); font-size: 21px; }
.calculator-result-title span { padding: 6px 9px; border-radius: 999px; color: var(--calc-primary); background: var(--calc-soft); font-size: 12px; font-weight: 800; }
.calculator-kpi-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 11px; margin: 15px 0; }
.calculator-kpi { padding: 14px; border: 1px solid var(--calc-line); border-radius: 14px; background: #fff; }
.calculator-kpi--main { grid-column: 1/-1; border: 0; color: #fff; background: linear-gradient(135deg,#005a99 0%,#0077c8 62%,#11aada 100%); }
.calculator-kpi__label { color: var(--calc-muted); font-size: 12px; line-height: 1.3; }
.calculator-kpi--main .calculator-kpi__label { color: rgba(255,255,255,.78); }
.calculator-kpi__value { margin-top: 5px; font-size: 23px; font-weight: 800; letter-spacing: -.02em; }
.calculator-kpi--main .calculator-kpi__value { font-size: 30px; }
.calculator-kpi__sub { margin-top: 4px; color: var(--calc-muted); font-size: 11px; }
.calculator-kpi--main .calculator-kpi__sub { color: rgba(255,255,255,.76); }
.calculator-breakdown { margin-top: 17px; padding: 15px; border-radius: 14px; background: var(--calc-soft); }
.calculator-breakdown h3 { margin: 0 0 11px; font-size: 15px; }
.calculator-breakdown-row { display: flex; justify-content: space-between; gap: 15px; padding: 7px 0; border-bottom: 1px solid rgba(120,145,165,.18); font-size: 13px; }
.calculator-breakdown-row:last-child { border-bottom: 0; }
.calculator-breakdown-row span:first-child { color: var(--calc-muted); }
.calculator-breakdown-row strong { text-align: right; }

.calculator-chart-wrap { margin-top: 17px; padding: 14px; border: 1px solid var(--calc-line); border-radius: 14px; }
.calculator-chart-head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 9px; }
.calculator-chart-head strong { font-size: 14px; }
.calculator-chart-head span { color: var(--calc-muted); font-size: 11px; }
.calculator-chart-target { position: relative; border-radius: 10px; outline: 0; cursor: zoom-in; }
.calculator-chart-target:focus-visible { box-shadow: 0 0 0 3px rgba(0,119,200,.22); }
.calculator-chart-target::after { content: "Zum Vergrößern klicken"; position: absolute; right: 8px; bottom: 7px; padding: 5px 8px; border: 1px solid var(--calc-line); border-radius: 999px; color: var(--calc-muted); background: rgba(255,255,255,.92); font-size: 10px; font-weight: 700; pointer-events: none; box-shadow: 0 4px 12px rgba(27,45,63,.08); }
#costChart { display: block; width: 100%; height: 230px; }
.calculator-legend { display: flex; flex-wrap: wrap; gap: 15px; margin-top: 8px; color: var(--calc-muted); font-size: 11px; }
.calculator-legend i { display: inline-block; width: 11px; height: 3px; margin-right: 5px; border-radius: 4px; vertical-align: middle; }
.calculator-legend .hp { background: #0077c8; }
.calculator-legend .fossil { background: #b96f32; }
.calculator-notes { display: grid; gap: 9px; margin-top: 15px; }

.calculator-chart-modal { position: fixed; z-index: 9999; inset: 0; display: grid; place-items: center; padding: 24px; background: rgba(2,8,15,.82); backdrop-filter: blur(5px); }
.calculator-chart-modal[hidden] { display: none; }
.calculator-chart-dialog { width: min(1180px,96vw); max-height: 94vh; overflow: auto; padding: 20px; border-radius: 20px; background: #fff; box-shadow: 0 28px 80px rgba(0,0,0,.3); }
.calculator-chart-modal-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 12px; }
.calculator-chart-modal-head h2 { margin: 0; font-size: clamp(18px,2vw,25px); }
.calculator-chart-modal-head p { margin: 4px 0 0; color: var(--calc-muted); font-size: 13px; }
.calculator-chart-close { width: 42px; height: 42px; flex: 0 0 auto; border: 1px solid var(--calc-line); border-radius: 50%; color: var(--calc-text); background: #fff; font-size: 25px; cursor: pointer; }
#costChartLarge { display: block; width: 100%; min-width: 780px; height: auto; }
body.chart-modal-open { overflow: hidden; }
.calculator-legal { margin: 22px 4px 0; color: var(--calc-muted); text-align: center; font-size: 12px; line-height: 1.6; }
.calculator-legal strong { color: var(--calc-text); }
.calculator-legal a { color: var(--calc-primary-dark); font-weight: 700; text-underline-offset: 3px; }
.hidden { display: none !important; }

@media (max-width: 980px) {
  .calculator-layout { grid-template-columns: 1fr; }
  .calculator-result-panel { position: static; }
}

@media (max-width: 720px) {
  .calculator-shell { width: min(100% - 18px,1240px); margin: 0 auto 22px; padding-top: 82px; }
}

@media (max-width: 640px) {
  .calculator-hero { border-radius: 18px; }
  .calculator-hero__brand { align-items: flex-start; flex-direction: column; }
  .calculator-brand-kicker { max-width: none; text-align: left; }
  .calculator-brand-logo { width: min(330px,88vw); }
  .calculator-panel { border-radius: 16px; }
  .calculator-form-grid,
  .calculator-kpi-grid { grid-template-columns: 1fr; }
  .calculator-tool-list { grid-template-columns: 1fr; }
  .calculator-kpi--main { grid-column: auto; }
  .calculator-actions { display: grid; grid-template-columns: 1fr; }
  .calculator-button { width: 100%; }
  .calculator-chart-modal { padding: 8px; }
  .calculator-chart-dialog { width: 100%; max-height: 96vh; padding: 14px; border-radius: 15px; }
  .calculator-chart-target::after { content: "Vergrößern"; }
}