/* ==========================================================================
   Rudam — Konzeptseiten (Demo)
   Drei Betriebe, drei Gestaltungssprachen. Eine gemeinsame Basis.
   ========================================================================== */

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

body,
h1, h2, h3, p, figure, ul, ol, dl, dd {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

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

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

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

/* ---------- Basis ------------------------------------------------------ */

body {
  --d-bg: #ffffff;
  --d-ink: #14161a;
  --d-muted: #5f6670;
  --d-line: rgba(0, 0, 0, 0.12);
  --d-accent: #14161a;
  --d-accent-ink: #ffffff;
  --d-surface: #f4f4f5;
  --d-radius: 10px;
  --d-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --d-display: var(--d-font);

  font-family: var(--d-font);
  font-size: 17px;
  line-height: 1.55;
  color: var(--d-ink);
  background: var(--d-bg);
  -webkit-font-smoothing: antialiased;
}

.d-wrap {
  width: 100%;
  max-width: 1080px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- Hinweisleiste --------------------------------------------- */

.demo-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.9rem;
  padding: 0.55rem 1rem;
  background: #111112;
  color: rgba(255, 255, 255, 0.72);
  font-family: var(--d-font);
  font-size: 0.75rem;
  letter-spacing: 0.01em;
  text-align: center;
}

.demo-bar strong {
  color: #fff;
  font-weight: 500;
}

.demo-bar a {
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
  padding-bottom: 1px;
  white-space: nowrap;
}

/* ---------- Navigation ------------------------------------------------- */

.d-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--d-bg);
  background: color-mix(in srgb, var(--d-bg) 88%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--d-line);
}

.d-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1rem;
}

.d-brand {
  font-family: var(--d-display);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.d-brand small {
  display: block;
  font-size: 0.5625rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  opacity: 0.6;
  margin-top: 0.15rem;
}

.d-nav__links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 1.9rem);
  font-size: 0.8125rem;
}

.d-nav__links a {
  opacity: 0.75;
  transition: opacity 0.2s ease;
}

.d-nav__links a:hover {
  opacity: 1;
}

.d-nav__links .d-tel {
  opacity: 1;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ---------- Hero ------------------------------------------------------- */

.d-hero {
  padding-block: clamp(3.5rem, 9vw, 7rem);
  border-bottom: 1px solid var(--d-line);
}

.d-eyebrow {
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--d-muted);
  margin-bottom: 1.25rem;
}

.d-h1 {
  font-family: var(--d-display);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 1;
  letter-spacing: -0.035em;
  font-weight: 600;
  max-width: 18ch;
  text-wrap: balance;
}

.d-lead {
  margin-top: 1.5rem;
  max-width: 46ch;
  font-size: clamp(1rem, 1.4vw, 1.1875rem);
  color: var(--d-muted);
}

.d-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--d-radius);
  background: var(--d-accent);
  color: var(--d-accent-ink);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.d-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.d-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  margin-top: 2.5rem;
  font-size: 0.8125rem;
  color: var(--d-muted);
}

.d-facts li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.d-facts li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}

/* ---------- Abschnitte ------------------------------------------------ */

.d-section {
  padding-block: clamp(3rem, 6vw, 5rem);
  border-bottom: 1px solid var(--d-line);
}

.d-section__head {
  max-width: 40rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.d-h2 {
  font-family: var(--d-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 600;
}

.d-section__head p {
  margin-top: 0.9rem;
  color: var(--d-muted);
  max-width: 52ch;
}

.d-grid {
  display: grid;
  gap: 1px;
  background: var(--d-line);
  border: 1px solid var(--d-line);
  border-radius: var(--d-radius);
  overflow: hidden;
}

@media (min-width: 760px) {
  .d-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .d-grid--2 {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.d-cell {
  background: var(--d-bg);
  padding: clamp(1.5rem, 3vw, 2rem);
}

.d-cell h3 {
  font-family: var(--d-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 0.6rem;
}

.d-cell p {
  font-size: 0.9375rem;
  color: var(--d-muted);
}

.d-cell ul {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.875rem;
  color: var(--d-muted);
}

.d-cell li::before {
  content: "— ";
  opacity: 0.5;
}

/* ---------- Zwei Spalten ---------------------------------------------- */

.d-split {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (min-width: 820px) {
  .d-split {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Kontakt --------------------------------------------------- */

.d-contact {
  background: var(--d-surface);
}

.d-contact__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

@media (min-width: 760px) {
  .d-contact__grid {
    grid-template-columns: 1fr 1fr;
  }
}

.d-contact__box {
  background: var(--d-bg);
  border: 1px solid var(--d-line);
  border-radius: var(--d-radius);
  padding: clamp(1.5rem, 3vw, 2rem);
}

.d-contact__box h3 {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--d-muted);
  margin-bottom: 0.6rem;
  font-weight: 600;
}

.d-contact__box p {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.d-contact__box small {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8125rem;
  color: var(--d-muted);
  letter-spacing: 0;
}

/* ---------- Footer --------------------------------------------------- */

.d-footer {
  padding-block: 2.5rem;
  font-size: 0.8125rem;
  color: var(--d-muted);
}

.d-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.d-footer a {
  border-bottom: 1px solid var(--d-line);
}

/* ---------- Elektro -------------------------------------------------- */

.demo-elektro {
  --d-bg: #14161a;
  --d-ink: #f4f5f7;
  --d-muted: rgba(244, 245, 247, 0.6);
  --d-line: rgba(255, 255, 255, 0.12);
  --d-accent: #f4c95d;
  --d-accent-ink: #14161a;
  --d-surface: #191c21;
  --d-radius: 4px;
  --d-display: "SF Pro Display", -apple-system, "Segoe UI", Roboto, sans-serif;
}

.demo-elektro .d-brand {
  letter-spacing: 0.2em;
}

.demo-elektro .d-hero {
  position: relative;
  overflow: hidden;
}

.demo-elektro .d-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  top: -20%;
  width: 45vw;
  height: 45vw;
  max-width: 520px;
  max-height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle at center, rgba(244, 201, 93, 0.16), transparent 62%);
  pointer-events: none;
}

.demo-elektro .d-cell li::before {
  content: "→ ";
}

/* ---------- Maler ---------------------------------------------------- */

.demo-maler {
  --d-bg: #fbf8f4;
  --d-ink: #1a1714;
  --d-muted: #6d665d;
  --d-line: rgba(26, 23, 20, 0.14);
  --d-accent: #1a1714;
  --d-accent-ink: #fbf8f4;
  --d-surface: #f3ece2;
  --d-radius: 2px;
  --d-display: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --d-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.demo-maler .d-brand {
  font-weight: 400;
  letter-spacing: 0.3em;
}

.demo-maler .d-h1 {
  font-weight: 400;
  letter-spacing: -0.02em;
  font-size: clamp(2.6rem, 6.4vw, 4.8rem);
}

.demo-maler .d-h2 {
  font-weight: 400;
}

.demo-maler .d-hero {
  padding-block: clamp(4rem, 10vw, 8rem);
}

/* ---------- Sanitär -------------------------------------------------- */

.demo-sanitaer {
  --d-bg: #ffffff;
  --d-ink: #10202b;
  --d-muted: #5d6b74;
  --d-line: rgba(16, 32, 43, 0.13);
  --d-accent: #12455c;
  --d-accent-ink: #ffffff;
  --d-surface: #eef3f6;
  --d-radius: 6px;
}

.demo-sanitaer .d-hero__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}

@media (min-width: 820px) {
  .demo-sanitaer .d-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

.demo-sanitaer .d-hero__panel {
  background: var(--d-surface);
  border-radius: var(--d-radius);
  padding: clamp(1.5rem, 3vw, 2rem);
  border: 1px solid var(--d-line);
}

.demo-sanitaer .d-hero__panel h2 {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--d-muted);
  font-weight: 600;
  margin-bottom: 1rem;
}

.demo-sanitaer .d-hours {
  display: grid;
  gap: 0.55rem;
  font-size: 0.9375rem;
}

.demo-sanitaer .d-hours div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--d-line);
}

.demo-sanitaer .d-hours div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.demo-sanitaer .d-hours span:last-child {
  font-variant-numeric: tabular-nums;
  color: var(--d-muted);
}

/* ---------- Responsive ---------------------------------------------- */

@media (max-width: 700px) {
  .d-nav__links a:not(.d-tel) {
    display: none;
  }

  .d-h1 {
    max-width: 100%;
  }
}