/* ==========================================================================
   Heizlastcheck.de — Energiefachwerk GmbH
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600;700;800&family=Raleway:ital,wght@0,400;0,500;0,600;0,700;1,500&display=swap');

:root {
  --color-primary: #58976A;
  --color-primary-dark: #457959;
  --color-primary-light: #E9F2EB;
  --color-secondary: #31244A;
  --color-secondary-light: #6b5a8c;
  --color-sand: #E4D6B2;
  --color-sand-light: #F7F1E1;
  --color-ink: #22201d;
  --color-muted: #5b5651;
  --color-bg: #FFFDF8;
  --color-card: #ffffff;
  --font-head: 'Montserrat', sans-serif;
  --font-body: 'Raleway', sans-serif;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-soft: 0 20px 45px -20px rgba(49, 36, 74, 0.25);
  --shadow-tight: 0 8px 20px -10px rgba(49, 36, 74, 0.2);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  font-size: 16px;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--color-secondary);
  margin: 0 0 .5em;
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 4vw + 1rem, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 2.6vw + 1rem, 2.4rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 700; }

p { margin: 0 0 1em; color: var(--color-muted); }

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 88px 0; }
@media (max-width: 720px) { section { padding: 56px 0; } }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  border: 1px solid rgba(88,151,106,.35);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head p { font-size: 1.05rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .95rem;
  padding: 15px 28px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 12px 25px -10px rgba(88,151,106,.6);
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-ghost {
  background: transparent;
  color: var(--color-secondary);
  border-color: rgba(49,36,74,.25);
}
.btn-ghost:hover { border-color: var(--color-secondary); }
.btn-block { width: 100%; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 253, 248, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(49,36,74,.08);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 84px;
}
.logo { flex-shrink: 0; }
.logo img { height: 36px; }
.main-nav {
  display: flex;
  gap: 32px;
  font-weight: 600;
  font-size: .95rem;
}
.main-nav a { color: var(--color-secondary); opacity: .85; }
.main-nav a:hover { opacity: 1; color: var(--color-primary-dark); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; }

@media (max-width: 860px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 84px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    gap: 0;
    padding: 10px 24px 20px;
    border-bottom: 1px solid rgba(49,36,74,.1);
  }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid rgba(49,36,74,.06); }
  .site-header.nav-open .main-nav { display: flex; }
  .nav-toggle { display: block; }
}
@media (max-width: 560px) {
  .site-header .container { height: 72px; gap: 12px; }
  .logo img { height: 30px; }
  .header-actions { gap: 10px; }
  .header-actions .btn {
    padding: 11px 16px;
    font-size: .82rem;
  }
}
@media (max-width: 380px) {
  .header-actions .btn { display: none; }
}

/* Audience toggle */
.aud-toggle {
  display: inline-flex;
  padding: 5px;
  background: #fff;
  border: 1px solid rgba(49,36,74,.15);
  border-radius: 999px;
  box-shadow: var(--shadow-tight);
  margin-bottom: 28px;
}
.aud-toggle button {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .85rem;
  padding: 11px 22px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--color-secondary);
  cursor: pointer;
  transition: background .2s ease, color .2s ease;
}
.aud-toggle button[aria-pressed="true"] {
  background: var(--color-primary);
  color: #fff;
}

[data-aud-content="b2b"] { display: none; }
body.is-b2b [data-aud-content="b2c"] { display: none; }
body.is-b2b [data-aud-content="b2b"] { display: block; }
body.is-b2b .badge-row[data-aud-content="b2b"],
body.is-b2b .hero-badges[data-aud-content="b2b"] { display: flex; }
.badge-row[data-aud-content="b2b"], .hero-badges[data-aud-content="b2b"] { display: none; }

/* Audience gate (pre-selection screen) */
body.gate-active { overflow: hidden; }

.audience-gate {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 1;
  visibility: visible;
  transition: opacity .5s ease, visibility 0s linear 0s;
}
.audience-gate.is-hidden {
  opacity: 0;
  visibility: hidden;
  transition: opacity .5s ease, visibility 0s linear .5s;
  pointer-events: none;
}
.audience-gate-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.audience-gate-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(35,27,53,.68) 0%, rgba(45,66,54,.5) 48%, rgba(228,214,178,.42) 100%);
}
.audience-gate-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(.3) brightness(.92) contrast(1.03) saturate(1.05);
}
.audience-gate-topbar {
  position: relative;
  z-index: 1;
  height: 84px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.audience-gate-logo { height: 40px; }
.audience-gate-inner {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  padding: 20px 24px 60px;
  color: #fff;
}
.gate-kicker {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-head);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--color-sand);
  margin-bottom: 22px;
}
.gate-kicker::before, .gate-kicker::after {
  content: "";
  width: 30px;
  height: 1px;
  background: rgba(228,214,178,.55);
  flex-shrink: 0;
}
@media (max-width: 560px) {
  .gate-kicker {
    gap: 10px;
    font-size: .7rem;
    letter-spacing: .16em;
  }
  .gate-kicker::before, .gate-kicker::after { display: none; }
}
.audience-gate-inner h1 {
  color: #fff;
  font-size: clamp(1.7rem, 3vw + 1rem, 2.6rem);
  text-shadow: 0 2px 18px rgba(0,0,0,.45);
}
.audience-gate-inner h1 .accent { color: #86caa0; }
.audience-gate-choices {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 8px;
}
.audience-choice {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  min-width: 240px;
  background: rgba(228,214,178,.07);
  border: 2px solid rgba(228,214,178,.35);
  border-radius: var(--radius-md);
  padding: 24px 36px;
  cursor: pointer;
  backdrop-filter: blur(3px);
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.audience-choice:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-3px);
}
.choice-label {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.1rem;
  color: #fff;
}
.choice-sub {
  font-size: .85rem;
  color: rgba(255,255,255,.75);
}
@media (max-width: 600px) {
  .audience-gate-choices { flex-direction: column; align-items: stretch; }
  .audience-choice { min-width: 0; }
}

/* Smooth reveal of the real page behind the gate (avoid a hard cut) */
.site-header, main {
  opacity: 1;
  transition: opacity .6s ease .05s;
}
body.gate-active .site-header, body.gate-active main {
  opacity: 0;
}
body.audience-chosen .aud-toggle {
  display: none;
}

/* Hero */
.hero { padding: 64px 0 100px; position: relative; overflow: hidden; }
.hero::before {
  content: "";
  position: absolute;
  top: -180px; right: -160px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, var(--color-sand-light) 0%, transparent 70%);
  z-index: 0;
}
.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}
@media (max-width: 940px) {
  .hero .container { grid-template-columns: 1fr; }
}
.hero-copy h1 { margin-bottom: 22px; }
.hero-copy .lede { font-size: 1.12rem; max-width: 560px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin: 30px 0 34px; }
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-badges span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-secondary);
  background: var(--color-sand-light);
  border: 1px solid rgba(228,214,178,.9);
  padding: 8px 14px;
  border-radius: 999px;
}
.hero-badges span::before { content: "✓"; color: var(--color-primary); font-weight: 800; }

.hero-visual { position: relative; }
.hero-visual .frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  aspect-ratio: 4/3.3;
}
.hero-visual .frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual .blob {
  position: absolute;
  bottom: -36px; left: -36px;
  width: 160px; height: 160px;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: .18;
}
.hero-visual .float-card {
  position: absolute;
  bottom: 18px; left: -18px;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(49,36,74,.06);
  border-radius: 14px;
  box-shadow: 0 14px 30px -16px rgba(49,36,74,.4);
  padding: 10px 16px 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: none;
}
.float-card .dot {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem;
  flex-shrink: 0;
}
.float-card strong {
  display: block;
  font-family: var(--font-head);
  font-size: .85rem;
  line-height: 1.2;
  color: var(--color-secondary);
  white-space: nowrap;
}
.float-card span {
  display: block;
  font-size: .72rem;
  line-height: 1.3;
  color: var(--color-muted);
  white-space: nowrap;
}
@media (max-width: 940px) {
  .hero-visual .float-card { left: 12px; bottom: 12px; }
}
@media (max-width: 620px) {
  /* Auf schmalen Displays nur das Kernversprechen, sonst verdeckt die Karte das Foto */
  .float-card span { display: none; }
  .float-card strong { font-size: .8rem; }
  .float-card .dot { width: 24px; height: 24px; font-size: .75rem; }
  .hero-visual .float-card { padding: 8px 14px 8px 9px; border-radius: 999px; }
}

/* Stats bar */
.stats {
  background: var(--color-primary-light);
  padding: 54px 0;
}
.stats-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 48px 64px;
}
.stats-inner .stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  font-family: var(--font-head);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--color-secondary);
  text-align: center;
  max-width: 220px;
}
.stats-inner .stat::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--color-primary);
}
@media (max-width: 760px) {
  .stats-inner { gap: 32px 40px; }
  .stats-inner .stat { font-size: .95rem; max-width: 160px; }
}

/* Problem / cards grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 860px) { .card-grid { grid-template-columns: 1fr; } }
.info-card {
  position: relative;
  background: var(--color-card);
  border: 1px solid rgba(49,36,74,.08);
  border-radius: var(--radius-md);
  padding: 34px 26px 30px;
  box-shadow: var(--shadow-tight);
  overflow: hidden;
}
.info-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--color-primary);
}
.card-index {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.9rem;
  color: var(--color-primary);
  opacity: .28;
  line-height: 1;
  margin-bottom: 14px;
}
.info-card h3 { margin-bottom: 10px; }
.info-card p { margin: 0; font-size: .96rem; }

.problem-section { background: var(--color-bg); }
.problem-copy { max-width: 760px; margin: 0 auto 48px; text-align: center; }

/* Steps */
.steps-wrap { position: relative; }
.steps {
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  counter-reset: step;
}
.steps[data-aud-content="b2c"] { display: grid; }
.steps[data-aud-content="b2b"] { display: none; }
body.is-b2b .steps[data-aud-content="b2c"] { display: none; }
body.is-b2b .steps[data-aud-content="b2b"] { display: grid; }
@media (max-width: 1200px) and (min-width: 941px) {
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
}
@media (max-width: 940px) {
  .steps { grid-template-columns: 1fr; gap: 28px; }
}
.step { text-align: center; position: relative; }
.step .num {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head);
  font-weight: 800;
  margin: 0 auto 16px;
  position: relative;
  z-index: 1;
}
.step h3 { font-size: 1.02rem; }
.step p { font-size: .9rem; }
.steps::before {
  content: "";
  position: absolute;
  top: 26px; left: 10%; right: 10%;
  height: 2px;
  background: repeating-linear-gradient(to right, rgba(49,36,74,.25) 0 8px, transparent 8px 16px);
  z-index: 0;
}
@media (max-width: 1200px) { .steps::before { display: none; } }

/* Packages */
.packages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  align-items: stretch;
}
@media (max-width: 820px) { .packages-grid { grid-template-columns: 1fr; } }
.package-card {
  background: var(--color-card);
  border: 2px solid rgba(49,36,74,.1);
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.package-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-soft);
}
.package-card .tag {
  position: absolute;
  top: -14px; right: 28px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-head);
  font-size: .75rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
}
.package-card .price {
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-secondary);
  margin: 10px 0 4px;
}
.package-card .price span { font-size: 1rem; font-weight: 600; color: var(--color-muted); }
.package-card ul { list-style: none; margin: 22px 0 30px; padding: 0; flex-grow: 1; }
.package-card li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 9px 0;
  font-size: .95rem;
  border-bottom: 1px dashed rgba(49,36,74,.12);
}
.package-card li::before { content: "✓"; color: var(--color-primary); font-weight: 800; }

/* Why independent */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
@media (max-width: 860px) { .why-grid { grid-template-columns: 1fr; } }
.why-item { text-align: center; padding: 0 12px; }
.why-item h3 {
  position: relative;
  padding-top: 22px;
}
.why-item h3::before {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 34px; height: 3px;
  border-radius: 2px;
  background: var(--color-primary);
}

/* FAQ */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: var(--color-card);
  border: 1px solid rgba(49,36,74,.1);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 24px;
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform .2s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body { padding: 0 24px 22px; font-size: .95rem; }

/* Final CTA + form */
.cta-final {
  background: var(--color-secondary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.cta-final > * { min-width: 0; }
@media (max-width: 940px) {
  .cta-final { grid-template-columns: 1fr; padding: 32px 20px; }
}
@media (max-width: 480px) {
  .cta-final { padding: 28px 16px; }
  .lead-form { padding: 22px 18px; }
}
.cta-final h2 { color: #fff; }
.cta-final .lede { color: rgba(255,255,255,.78); }
.cta-final .hero-badges span {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.18);
  color: #fff;
}
.cta-final .hero-badges span::before { color: var(--color-sand); }

.lead-form {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 32px;
  color: var(--color-ink);
  box-shadow: var(--shadow-soft);
}
.lead-form h3 { color: var(--color-secondary); margin-bottom: 6px; }
.lead-form .form-sub { font-size: .88rem; margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row.single { grid-template-columns: 1fr; }
@media (max-width: 480px) { .form-row { grid-template-columns: 1fr; } }
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1.5px solid rgba(49,36,74,.18);
  font-family: var(--font-body);
  font-size: .95rem;
  background: #fcfbf8;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.field.consent { display: flex; gap: 10px; align-items: flex-start; font-size: .8rem; color: var(--color-muted); }
.field.consent input { width: auto; margin-top: 3px; }
.form-note { font-size: .78rem; color: var(--color-muted); margin-top: 12px; text-align: center; }
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-error {
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  background: #fdf0ee;
  border: 1px solid #e8bcb4;
  color: #8c3520;
  font-size: .85rem;
  text-align: center;
}
.form-error.is-visible { display: block; }
.form-success {
  display: none;
  text-align: center;
  padding: 30px 10px;
}
.form-success .icon { font-size: 2.4rem; margin-bottom: 10px; }
.lead-form.is-success form { display: none; }
.lead-form.is-success .form-success { display: block; }

/* Footer */
.site-footer {
  background: var(--color-sand-light);
  padding: 60px 0 28px;
  margin-top: 40px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(49,36,74,.12);
}
.footer-brand img { height: 32px; margin-bottom: 14px; }
.footer-brand p { max-width: 320px; font-size: .9rem; }
.footer-cols { display: flex; gap: 60px; flex-wrap: wrap; }
.footer-col h4 { font-size: .85rem; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 14px; }
.footer-col a { display: block; font-size: .92rem; color: var(--color-muted); margin-bottom: 10px; }
.footer-col a:hover { color: var(--color-primary-dark); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 24px;
  font-size: .82rem;
  color: var(--color-muted);
}

/* Legal pages */
.legal-page { padding: 60px 0 100px; }
.legal-page .container { max-width: 820px; }
.legal-page h1 { margin-bottom: 30px; }
.legal-page h2 { font-size: 1.25rem; margin-top: 40px; }
.legal-page p, .legal-page li { color: var(--color-ink); font-size: .96rem; }
.legal-page ul { padding-left: 20px; }
.back-link { display: inline-block; margin-bottom: 24px; font-weight: 600; color: var(--color-primary-dark); }

/* Utility */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }