/* ==========================================================================
   HeizungsTreuhand — Tokens
   Style rhythm adapted from the "Custo" reference (oversized type, hairline
   borders, generous section gaps, pill CTAs) mapped onto the real brand
   palette (navy / gold) from the logo, flyer and business card.
   ========================================================================== */

/* Self-hosted Inter (variable font, Latin subset — covers all German text
   incl. äöüß). One file serves weights 400–800, so a single @font-face rule
   with a weight range is enough; no external Google Fonts request is made. */
@font-face{
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('assets/fonts/Inter-latin-variable.woff2') format('woff2-variations'), url('assets/fonts/Inter-latin-variable.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root{
  /* Brand colors */
  --color-navy:        #161d34;
  --color-navy-deep:   #001835;
  --color-navy-soft:   #2c3c5c;
  --color-gold:        #d3af37;
  --color-gold-light:  #d7ac66;

  --color-canvas:      #f4f2ec;
  --color-canvas-alt:  #eeece4;
  --color-paper:       #ffffff;

  --color-ink:         #161d34;
  --color-muted:       #5b6472;
  --color-muted-light: #8a92a0;
  --color-border:      #e1ddd2;
  --color-border-dark: rgba(255,255,255,0.16);

  /* Type */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --text-caption: 15px;
  --text-body: 17px;
  --text-lead: 20px;
  --text-heading-sm: 26px;
  --text-heading: 38px;
  --text-display: clamp(38px, 6vw, 60px);

  /* Layout */
  --page-max-width: 1200px;
  --section-gap: 110px;
  --radius-card: 8px;
  --radius-pill: 31px;
}

*, *::before, *::after{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "kern" 1, "liga" 1;
}

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

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

ul{ margin: 0; padding: 0; list-style: none; }

.section-inner{
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.top-bar{
  background: var(--color-navy);
}

.top-bar-inner{
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 13px 32px;
}

.top-bar p{
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.55;
  color: rgba(255,255,255,0.92);
  text-align: center;
}

.top-bar strong{
  color: #fff;
  font-weight: 700;
}

.nav{
  position: sticky;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--color-canvas);
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease;
}

.nav.is-scrolled{
  background: rgba(244,242,236,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner{
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo{
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  color: var(--color-navy);
  margin-right: auto;
}

.nav-logo-img{ height: 32px; width: auto; }

.nav-mobile-panel{ display: contents; }

.nav-links{
  display: flex;
  gap: 32px;
}

.nav-links a{
  font-size: 15px;
  font-weight: 500;
  color: var(--color-navy);
  opacity: .8;
}

.nav-links a:hover{ opacity: 1; }

.nav-actions{
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-phone{
  font-size: 15px;
  font-weight: 600;
  color: var(--color-navy);
  white-space: nowrap;
}

.nav-burger{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
}

.nav-burger span{
  display: block;
  height: 2px;
  background: var(--color-navy);
  border-radius: 2px;
}

/* ==========================================================================
   Buttons & links
   ========================================================================== */

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  padding: 15px 30px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .15s ease;
  white-space: nowrap;
}

.btn:active{ transform: scale(0.98); }

.btn-primary{
  background: var(--color-navy);
  color: #fff;
  border-color: var(--color-navy);
}
.btn-primary:hover{ background: var(--color-gold); border-color: var(--color-gold); color: var(--color-navy); }

/* Nav / hero primary CTAs stay on-brand navy on hover — gold is reserved as a rare accent */
.btn-primary.nav-cta:hover,
.btn-primary.hero-cta:hover{
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: #fff;
  filter: brightness(1.18);
}

.btn-ghost{
  background: transparent;
  color: var(--color-navy);
  border: 1px solid var(--color-navy);
}
.btn-ghost:hover{ background: var(--color-navy); color: #fff; }

.btn-outline{
  background: transparent;
  color: var(--color-navy);
  border: 1px solid var(--color-border);
}
.btn-outline:hover{ border-color: var(--color-navy); background: var(--color-navy); color: #fff; }

.btn-sm{ padding: 10px 22px; font-size: 14px; }

.btn-block{ width: 100%; }

.link-arrow{
  font-size: 15px;
  font-weight: 600;
  border-bottom: 1px solid var(--color-navy);
  padding-bottom: 3px;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero{
  background: var(--color-paper);
  padding: 96px 32px 130px;
}

.hero-inner{
  max-width: var(--page-max-width);
  margin: 0 auto;
  text-align: left;
}

.hero-headline{
  font-size: clamp(40px, 4.4vw, 64px);
  line-height: 1.08;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0;
  letter-spacing: -0.01em;
}

.hero-rule{
  display: block;
  width: 64px;
  height: 3px;
  background: var(--color-gold);
  margin: 28px 0;
}

.hero-sub{
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-muted);
  max-width: 480px;
  margin: 0 0 40px;
}

.hero-actions{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 28px;
}

/* ==========================================================================
   Generic section rhythm
   ========================================================================== */

.section{
  padding: var(--section-gap) 0;
  background: var(--color-paper);
}

.section-alt{ background: var(--color-canvas); }

.section-dark{
  background: var(--color-navy);
  color: #fff;
}

.caption{
  font-size: var(--text-caption);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 14px;
}

.caption-light{ color: var(--color-gold-light); }

.heading{
  font-size: var(--text-heading);
  line-height: 1.15;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 20px;
  max-width: 720px;
}

.heading-light{ color: #fff; }

.lead{
  font-size: var(--text-lead);
  line-height: 1.5;
  color: var(--color-muted);
  max-width: 640px;
  margin: 0 0 48px;
}

.lead-light{ color: rgba(255,255,255,0.72); }

/* Mehrwert badges */

.badge-row{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: -20px 0 56px;
}

.badge{
  font-size: 14px;
  font-weight: 600;
  color: var(--color-navy);
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  padding: 9px 18px;
  border-radius: var(--radius-pill);
}

/* Feature grid */

.feature-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}

.feature-icon{
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon img{ width: 26px; height: 26px; object-fit: contain; }

.feature h3{
  font-size: 19px;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 8px;
}

.feature p{
  font-size: 15px;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.55;
}

/* ==========================================================================
   Pricing / Dienstleistungen
   ========================================================================== */

.pricing-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 76px;
}

.price-card{
  position: relative;
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}

.price-card-featured{
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: #fff;
  overflow: hidden;
}

.price-card-ribbon{
  position: absolute;
  top: 26px;
  right: -54px;
  width: 190px;
  background: var(--color-gold);
  color: var(--color-navy);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  padding: 6px 0;
  transform: rotate(45deg);
}

.price-card-icon{
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.price-card-featured .price-card-icon{ background: rgba(255,255,255,0.1); }

.price-card-icon img{ width: 22px; height: 22px; }

.price-card h3{
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 6px;
}

.price-card-sub{
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gold);
  margin: 0 0 16px;
}

.price-card-note{
  font-size: 14px;
  line-height: 1.55;
  margin: 0 0 20px;
  opacity: 0.85;
}

.price-card-list{
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.price-card-list li{
  font-size: 14px;
  line-height: 1.5;
  padding-left: 22px;
  position: relative;
}

.price-card-list li::before{
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-gold);
  font-weight: 700;
}

.price-card-price{
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.price-card-featured .price-card-price{ border-top-color: rgba(255,255,255,0.18); }

.price-amount{ font-size: 24px; font-weight: 800; }
.price-vat{ font-size: 13px; opacity: 0.65; }

.price-card .btn{ align-self: flex-start; }

.price-card-featured .btn-primary{
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-navy);
}
.price-card-featured .btn-primary:hover{ background: #fff; border-color: #fff; }

/* Process strip */

.process-strip{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  border-top: 1px solid var(--color-border);
  padding-top: 56px;
}

.process-num{
  display: block;
  font-size: 14px;
  font-weight: 800;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.process-step h4{
  font-size: 17px;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 8px;
}

.process-step p{
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
  line-height: 1.5;
}

/* ==========================================================================
   Contact / CTA
   ========================================================================== */

.contact-grid{
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
  align-items: start;
}

.contact-direct{
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-line{
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border-dark);
}

.contact-line img{
  width: 20px; height: 20px;
}

.contact-line-static{ font-weight: 500; color: rgba(255,255,255,0.85); }

.contact-hint{
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin: 12px 0 0;
}

.contact-form{
  background: #fff;
  border-radius: var(--radius-card);
  padding: 36px;
}

.form-honeypot{
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form-success{
  text-align: center;
}

.contact-form-success h3{
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 12px;
}

.contact-form-success p{
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-muted);
  margin: 0;
}

.form-row{ margin-bottom: 20px; }

.form-row-split{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row label{
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-row input,
.form-row select,
.form-row textarea{
  width: 100%;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 16px;
  background: var(--color-paper);
  transition: border-color .15s ease;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  outline: none;
  border-color: var(--color-navy);
}

.form-row textarea{ resize: vertical; }

.form-note{
  font-size: 12px;
  color: var(--color-muted-light);
  text-align: center;
  margin: 14px 0 0;
}

.form-privacy-note{
  font-size: 12px;
  line-height: 1.5;
  color: var(--color-muted-light);
  margin: 0 0 16px;
}

.form-privacy-note a{
  color: var(--color-muted);
  text-decoration: underline;
}

.form-privacy-note a:hover{ color: var(--color-navy); }

/* ==========================================================================
   Legal pages (Impressum / Datenschutz)
   ========================================================================== */

.legal-page{ padding-top: 76px; }

.legal-content{ max-width: 760px; }

.legal-content .heading{ max-width: none; }

.legal-body{
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.legal-body section + section{ margin-top: 40px; }

.legal-body h2{
  font-size: 22px;
  font-weight: 700;
  color: var(--color-navy);
  margin: 0 0 14px;
}

.legal-body p{
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
  margin: 0 0 14px;
}

.legal-body p:last-child{ margin-bottom: 0; }

.legal-list{
  margin: 0 0 14px;
  padding-left: 20px;
  list-style: disc;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
}

.legal-list li{ margin-bottom: 4px; }

.legal-body address{
  font-style: normal;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-muted);
}

.legal-body a{
  color: var(--color-navy);
  text-decoration: underline;
}

.legal-body a:hover{ color: var(--color-gold); }

/* ==========================================================================
   Footer
   ========================================================================== */

.footer{
  background: var(--color-navy-deep);
  color: rgba(255,255,255,0.85);
  padding: 76px 0 32px;
}

.footer-inner{
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.footer-top{ margin-bottom: 56px; }

.footer-logo-row{
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo-row span{
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.footer-logo{ height: 30px; width: auto; }

.footer-tagline{
  font-size: 15px;
  color: rgba(255,255,255,0.55);
  margin: 0;
}

.footer-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 320px));
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-col h5{
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 6px;
}

.footer-role{
  font-size: 14px;
  color: var(--color-gold-light);
  margin: 0 0 12px;
}

.footer-col a,
.footer-col p{
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin: 0 0 4px;
  line-height: 1.6;
}

.footer-col a:hover{ color: #fff; }

.footer-bottom{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 28px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

.footer-bottom a{
  color: inherit;
  text-decoration: underline;
}

.footer-bottom a:hover{ color: rgba(255,255,255,0.8); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px){
  .nav-links, .nav-actions{ display: none; }
  .nav-burger{ display: flex; }

  .feature-grid{ grid-template-columns: repeat(2, 1fr); }
  .pricing-grid{ grid-template-columns: 1fr; }
  .process-strip{ grid-template-columns: repeat(2, 1fr); }
  .contact-grid{ grid-template-columns: 1fr; }
  .price-card-ribbon{ right: -54px; }
}

@media (max-width: 720px){
  .hero{ padding: 72px 24px 80px; }
}

@media (max-width: 600px){
  :root{ --section-gap: 76px; }
  .section-inner{ padding: 0 20px; }
  .top-bar-inner{ padding: 10px 20px; }
  .top-bar p{ font-size: 12.5px; text-align: left; }
  .nav-inner{ padding: 16px 20px; }
  .hero{ padding: 56px 20px 64px; }
  .hero-headline{ font-size: clamp(32px, 9vw, 40px); }
  .hero-rule{ margin: 22px 0; }
  .hero-actions{ gap: 18px; }
  .hero-actions .link-arrow{ margin-left: 30px; }
  .feature-grid{ grid-template-columns: 1fr; }
  .process-strip{ grid-template-columns: 1fr; }
  .form-row-split{ grid-template-columns: 1fr; }
  .badge-row{ margin-top: 0; }
  .contact-form{ padding: 24px; }
  .footer-grid{ grid-template-columns: 1fr; }
  .footer-bottom{ flex-direction: column; }
}

/* Mobile nav open state — links and actions stack naturally inside one panel,
   so there's no fixed offset to keep in sync when either section's height changes. */
.nav-mobile-panel.is-open{
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  background: var(--color-canvas);
  padding: 20px 32px;
  border-bottom: 1px solid var(--color-border);
  gap: 20px;
}

.nav-mobile-panel.is-open .nav-links{
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav-mobile-panel.is-open .nav-actions{
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
}