/* ============================================================
   Kosmetikzone Kreuzäcker — Design System
   Direction: "Kupferfolie" — porcelain daylight rooms, warm
   charcoal ink, the logo's copper foil reserved for actions
   and results. Every colour is sampled from the studio's own
   material: the kz foil coaster, the white rooms, the wood
   floor, the brass lamps.
   ============================================================ */

:root {
  /* --- surfaces --- */
  --paper:        #FBF9F7;   /* porcelain — the studio's daylight walls */
  --stone:        #F2EDE7;   /* warm stone — alternate sections, zebra rows */
  --white:        #FFFFFF;   /* photo mounts, table heads */

  /* --- ink & text --- */
  --ink:          #26201A;   /* warm charcoal, from the logo lettering */
  --muted:        #6C5D4E;   /* oak — secondary text (5.8:1 on paper) */

  /* --- copper (from the logo foil) --- */
  --copper:       #8F5716;   /* links, buttons, price emphasis (5.5:1 on paper) */
  --copper-deep:  #74450F;   /* hover, active */
  --champagne:    #E4B478;   /* copper's light end — dark surfaces only (8.5:1 on band) */
  --champagne-bright: #EDC492; /* champagne hover on dark */

  /* --- dark band (results + footer only) --- */
  --band:         #26201A;
  --band-text:    #F5F0EA;
  --band-muted:   #B3A695;
  --band-line:    rgba(245, 240, 234, .16);

  /* --- lines --- */
  --line:         rgba(38, 32, 26, .14);
  --line-strong:  rgba(38, 32, 26, .28);

  /* --- geometry --- */
  --radius:       8px;       /* buttons, inputs, small media */
  --radius-lg:    16px;      /* large photos, bands */
  --maxw:         1160px;

  /* --- type --- */
  --font-display: "Tenor Sans", "Optima", "Gill Sans", sans-serif;
  --font-label:   "Libre Franklin", "Avenir Next", "Segoe UI", sans-serif;
  --font-body:    "Albert Sans", "Avenir Next", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scrollbar-gutter: stable; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: .005em;
  text-wrap: balance;
}
h1 { font-size: clamp(38px, 5.2vw, 62px); }
h2 { font-size: clamp(28px, 3.6vw, 42px); }
h3 { font-size: clamp(21px, 2.2vw, 26px); }
h4 { font-size: 19px; }

p.lead { font-size: clamp(18px, 1.5vw, 21px); max-width: 58ch; }
.muted { color: var(--muted); }
a { color: var(--copper); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--copper-deep); }

:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; border-radius: 2px; }

.label {
  font-family: var(--font-label);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: .09em;
  text-transform: uppercase;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--font-label); font-weight: 600; font-size: 15.5px;
  letter-spacing: .04em;
  min-height: 48px; padding: 12px 26px;
  white-space: nowrap;
  border-radius: var(--radius); text-decoration: none;
  border: 1.5px solid transparent; cursor: pointer;
  transition: background .18s, color .18s, border-color .18s;
}
.btn-primary { background: var(--copper); color: var(--white); }
.btn-primary:hover { background: var(--copper-deep); color: var(--white); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--copper); color: var(--copper); }
/* on the dark band */
.btn-champagne { background: var(--champagne); color: var(--ink); }
.btn-champagne:hover { background: var(--champagne-bright); color: var(--ink); }

/* ---------- Navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 249, 247, .9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand img { width: 44px; height: auto; }
.brand .word { font-family: var(--font-display); font-size: 19px; line-height: 1.2; letter-spacing: .02em; }
.brand .word small { display: block; font-family: var(--font-label); font-size: 10.5px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.nav-links { display: flex; align-items: center; gap: 26px; list-style: none; }
.nav-links a {
  font-family: var(--font-label); font-weight: 500; font-size: 15.5px;
  color: var(--ink); text-decoration: none; padding: 6px 2px;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--copper); }
.nav .btn { min-height: 44px; padding: 9px 20px; }

.burger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 48px; height: 48px; padding: 12px;
  background: none; border: 0; cursor: pointer; border-radius: var(--radius);
}
.burger span { height: 2px; background: var(--ink); border-radius: 2px; transition: transform .2s, opacity .2s; }
.nav.open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.open .burger span:nth-child(2) { opacity: 0; }
.nav.open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu { display: none; }
.nav.open .mobile-menu {
  display: block; position: absolute; left: 0; right: 0; top: 74px;
  background: var(--paper); border-bottom: 1px solid var(--line);
  padding: 10px 24px 24px;
}
.mobile-menu ul { list-style: none; }
.mobile-menu a {
  display: flex; align-items: center; min-height: 48px;
  font-family: var(--font-label); font-weight: 500; font-size: 18px;
  color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line);
}
.mobile-menu a:hover { color: var(--copper); }
.mobile-menu .btn { margin-top: 18px; width: 100%; }

/* ---------- Sections ---------- */
section { padding: 84px 0; }
section.tight { padding: 56px 0; }
.bg-stone { background: var(--stone); }
.section-head { max-width: 680px; margin-bottom: 44px; }
.section-head p { color: var(--muted); margin-top: 12px; }

/* ---------- Hero (split) ---------- */
.hero { padding: 72px 0 84px; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 18px; }
.hero p.lead { color: var(--muted); margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-media { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 5/4.4; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-note { margin-top: 16px; font-size: 15px; color: var(--muted); }
.hero-note b { color: var(--ink); font-weight: 600; }

/* ---------- Page hero (subpages) ---------- */
.page-hero { padding: 64px 0 0; }
.page-hero .crumbs { font-family: var(--font-label); font-size: 14px; color: var(--muted); margin-bottom: 14px; }
.page-hero .crumbs a { color: var(--muted); text-decoration: none; }
.page-hero .crumbs a:hover { color: var(--copper); }
.page-hero h1 { max-width: 16ch; margin-bottom: 16px; }
.page-hero p.lead { color: var(--muted); }
.page-hero .meta {
  display: flex; gap: 28px; flex-wrap: wrap; margin-top: 26px;
  font-family: var(--font-label); font-size: 15px;
}
.page-hero .meta b { color: var(--copper); font-weight: 600; }

/* ---------- Quote strip ---------- */
.quote-strip { padding: 64px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quote-strip blockquote { max-width: 780px; margin: 0 auto; text-align: center; }
.quote-strip p { font-family: var(--font-display); font-size: clamp(22px, 2.6vw, 30px); line-height: 1.35; }
.quote-strip cite { display: block; margin-top: 16px; font-style: normal; font-family: var(--font-label); font-size: 14.5px; letter-spacing: .06em; color: var(--muted); }

/* ---------- Treatment ledger (directory rows, no cards) ---------- */
.ledger-group { margin-bottom: 52px; }
.ledger-group:last-child { margin-bottom: 0; }
.ledger-group > h3 { padding-bottom: 14px; border-bottom: 2px solid var(--ink); }
.ledger-group > .group-note { color: var(--muted); font-size: 15.5px; margin: 10px 0 0; max-width: 60ch; }
.ledger { list-style: none; }
.ledger li { border-bottom: 1px solid var(--line); }
.ledger a {
  display: grid; grid-template-columns: 1fr auto auto; gap: 8px 24px; align-items: baseline;
  padding: 18px 4px; text-decoration: none; color: var(--ink);
  transition: background .15s;
}
.ledger a:hover { background: var(--stone); }
.ledger .name { font-family: var(--font-display); font-size: 21px; }
.ledger .desc { grid-column: 1; color: var(--muted); font-size: 15.5px; max-width: 58ch; }
.ledger .price { font-family: var(--font-label); font-weight: 600; font-size: 15.5px; color: var(--copper); white-space: nowrap; }
.ledger .go { font-family: var(--font-label); color: var(--muted); }
.ledger a:hover .go { color: var(--copper); }

/* ---------- Split (image + text) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.rev .split-txt { order: -1; }
.split-media { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4/3.1; }
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.split-txt h2 { margin-bottom: 16px; }
.split-txt p { color: var(--muted); margin-bottom: 14px; }
.split-txt p:last-of-type { margin-bottom: 0; }

/* checklist (real benefits only) */
.checklist { list-style: none; margin-top: 20px; display: grid; gap: 11px; }
.checklist li { display: flex; align-items: flex-start; gap: 12px; }
.checklist li::before {
  content: "✓";
  flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; margin-top: 3px; /* optical centre of first text line (1.65 × 17px ≈ 28px line) */
  border-radius: 50%;
  background: var(--copper); color: var(--white);
  font-size: 12.5px; font-weight: 700;
}

/* ---------- Numbered steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.steps.three { grid-template-columns: repeat(3, 1fr); }
.step { border-top: 2px solid var(--ink); padding-top: 16px; counter-increment: step; }
.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display); font-size: 30px; color: var(--copper);
  display: block; margin-bottom: 8px;
}
.step h4 { margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 15px; }

/* ---------- Price tables ---------- */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.price-table { width: 100%; border-collapse: collapse; }
.price-table caption { text-align: left; padding-bottom: 14px; }
.price-table caption h3 { padding-bottom: 0; }
.price-table th {
  font-family: var(--font-label); font-weight: 600; font-size: 13.5px;
  letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
  text-align: left; padding: 10px 12px; border-bottom: 2px solid var(--ink);
}
.price-table td { padding: 13px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.price-table tbody tr:nth-child(even) { background: var(--stone); }
.bg-stone .price-table tbody tr:nth-child(even) { background: var(--white); }
.price-table .p {
  font-family: var(--font-label); font-weight: 600; color: var(--copper);
  text-align: right; white-space: nowrap;
}
.price-table th.p { text-align: right; }
.price-table .abo { color: var(--muted); font-size: 14.5px; font-weight: 400; display: block; }
.price-note { margin-top: 14px; font-size: 14.5px; color: var(--muted); }

/* ---------- Results band (dark, before/after proof) ---------- */
.results-band { background: var(--band); color: var(--band-text); }
.results-band .section-head p { color: var(--band-muted); }
.ba-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ba-grid.two { grid-template-columns: repeat(2, 1fr); max-width: 860px; }
.ba-figure { margin: 0; }
.ba-figure img { border-radius: var(--radius); width: 100%; aspect-ratio: 1; object-fit: cover; }
.ba-figure figcaption {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  margin-top: 12px; font-size: 15px; color: var(--band-muted);
}
.ba-figure figcaption b { font-family: var(--font-label); font-weight: 600; color: var(--champagne); }
.ba-figure a { color: var(--champagne); }
.results-band .more { margin-top: 34px; }

/* ---------- Device / proof strip ---------- */
.devices { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px 28px; }
.device { border-top: 2px solid var(--ink); padding-top: 16px; }
.device h4 { margin-bottom: 4px; }
.device .of { font-family: var(--font-label); font-size: 14.5px; color: var(--muted); margin-bottom: 10px; }
.device p { color: var(--muted); font-size: 15px; }

/* ---------- Partner logo strip ---------- */
.partner-strip { display: flex; flex-wrap: wrap; gap: 18px 44px; align-items: center; justify-content: center; }
.partner-strip img { height: 56px; width: auto; filter: grayscale(1); opacity: .62; mix-blend-mode: multiply; transition: filter .2s, opacity .2s; }
.partner-strip img:hover { filter: none; opacity: 1; }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: 18px;
  padding: 18px 2px; cursor: pointer; list-style: none;
  font-family: var(--font-label); font-weight: 500; font-size: 17px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-display); font-size: 24px; color: var(--copper); flex: none; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 2px 20px; color: var(--muted); max-width: 66ch; }
.faq details ul { padding: 0 2px 20px 22px; color: var(--muted); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--band); color: var(--band-text); border-radius: var(--radius-lg); padding: 56px; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-band h2 { max-width: 22ch; }
.cta-band p { color: var(--band-muted); margin-top: 10px; max-width: 46ch; }
.cta-band .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta-band .btn-ghost { color: var(--band-text); border-color: var(--band-line); }
.cta-band .btn-ghost:hover { border-color: var(--champagne); color: var(--champagne); }

/* ---------- Info panel (hours / address / policy) ---------- */
.info-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px; }
.info-cols h3 { margin-bottom: 14px; }
.info-cols p, .info-cols li { color: var(--muted); }
.hours { list-style: none; max-width: 320px; }
.hours li { display: flex; justify-content: space-between; gap: 18px; padding: 7px 0; border-bottom: 1px solid var(--line); }
.hours li b { color: var(--ink); font-weight: 500; }
.hours li .t { font-family: var(--font-label); font-size: 15px; }

/* ---------- Certificates ---------- */
.zert-row { display: flex; gap: 28px; flex-wrap: wrap; }
.zert-row figure { margin: 0; max-width: 240px; }
.zert-row img { border-radius: var(--radius); border: 1px solid var(--line); }
.zert-row figcaption { font-size: 14px; color: var(--muted); margin-top: 10px; }

/* ---------- Footer ---------- */
.footer { background: var(--band); color: var(--band-text); padding: 64px 0 32px; }
.footer a { color: var(--band-muted); text-decoration: none; }
.footer a:hover { color: var(--champagne); }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer .brandline { font-family: var(--font-display); font-size: 21px; }
.footer .brandline small { display: block; font-family: var(--font-label); font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--band-muted); margin-top: 6px; }
.footer p.about { color: var(--band-muted); font-size: 15px; max-width: 32ch; margin-top: 14px; }
.footer h5 { font-family: var(--font-label); font-weight: 600; font-size: 13.5px; letter-spacing: .09em; text-transform: uppercase; margin-bottom: 16px; }
.footer ul { list-style: none; display: grid; gap: 9px; font-size: 15.5px; }
.footer .bottom {
  border-top: 1px solid var(--band-line); margin-top: 48px; padding-top: 22px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  color: var(--band-muted); font-size: 14px;
}

/* ---------- Product list (iS Clinical) ---------- */
.product-group { margin-bottom: 44px; }
.product-group h3 { padding-bottom: 12px; border-bottom: 2px solid var(--ink); margin-bottom: 4px; }
.product-list { list-style: none; columns: 2; column-gap: 56px; }
.product-list li {
  display: flex; justify-content: space-between; gap: 18px; align-items: baseline;
  padding: 10px 2px; border-bottom: 1px solid var(--line);
  break-inside: avoid;
}
.product-list .p { font-family: var(--font-label); font-weight: 600; font-size: 15px; color: var(--copper); white-space: nowrap; }

/* ---------- Utility ---------- */
.mt-0 { margin-top: 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.center { text-align: center; }
.stack-tables { display: grid; gap: 56px; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .nav-links { display: none; }
  .nav > .wrap > .btn { min-height: 44px; padding: 8px 14px; font-size: 14px; margin-left: auto; }
  .burger { display: flex; }
  .hero .wrap, .split, .grid-2 { grid-template-columns: 1fr; }
  .hero .wrap { gap: 36px; }
  .split { gap: 30px; }
  .split.rev .split-txt { order: 0; }
  .hero-media { aspect-ratio: 3/2; }
  .steps, .steps.three, .devices { grid-template-columns: 1fr 1fr; }
  .ba-grid, .ba-grid.two { grid-template-columns: 1fr 1fr; }
  .info-cols { grid-template-columns: 1fr; gap: 36px; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .product-list { columns: 1; }
  section { padding: 60px 0; }
  .cta-band { padding: 38px 28px; }
}
@media (max-width: 560px) {
  .steps, .steps.three, .devices, .ba-grid, .ba-grid.two { grid-template-columns: 1fr; }
  .footer .cols { grid-template-columns: 1fr; }
  .ledger a { grid-template-columns: 1fr auto; }
  .ledger .go { display: none; }
  .wrap { padding: 0 18px; }
}
@media (max-width: 560px) {
  .brand .word { display: none; }
  .nav .wrap { gap: 10px; }
}