/* ---------- Lokal gehostete Schriftarten (DSGVO-freundlich, kein CDN) ---------- */

@font-face {
  font-family: 'Cabinet Grotesk';
  src: url('./assets/fonts/cabinet-grotesk-700.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: 'Cabinet Grotesk';
  src: url('./assets/fonts/cabinet-grotesk-800.woff2') format('woff2');
  font-weight: 800;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: 'Satoshi';
  src: url('./assets/fonts/satoshi-400.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: 'Satoshi';
  src: url('./assets/fonts/satoshi-500.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: 'Satoshi';
  src: url('./assets/fonts/satoshi-700.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
  font-style: normal;
}

/* ============================================================
   Werner Rickl Heizungs- und Lüftungsbau GmbH — One-Page Site
   Art direction: solides Handwerk, modern & warm.
   Kupfer-Akzent (Wärme, Rohre, Handwerk) auf warmen Neutraltönen.
   ============================================================ */

:root,
[data-theme='light'] {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 4.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Surfaces — warmes Off-White */
  --color-bg: #f8f6f2;
  --color-surface: #fdfcfa;
  --color-surface-2: #f1eee8;
  --color-divider: #e3dfd7;
  --color-border: #d8d3c9;

  /* Text — dunkles Anthrazit mit warmem Unterton */
  --color-text: #23211c;
  --color-text-muted: #6f6a61;
  --color-text-faint: #b1aca1;
  --color-text-inverse: #f8f6f2;

  /* Akzent — Kupfer */
  --color-primary: #a8481a;
  --color-primary-hover: #8a3a13;
  --color-primary-active: #6e2e0f;
  --color-primary-highlight: #f3ddd0;

  /* Dunkle Kontrastfläche (Hero-Badge, Footer) */
  --color-ink: #211e1a;
  --color-ink-text: #ece7df;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.25 0.02 60 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.25 0.02 60 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.25 0.02 60 / 0.12);

  --content-narrow: 640px;
  --content-default: 1040px;
  --content-wide: 1200px;

  --font-display: 'Cabinet Grotesk', 'Avenir Next', 'Segoe UI', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
}

[data-theme='dark'] {
  --color-bg: #17150f;
  --color-surface: #1e1c15;
  --color-surface-2: #24211a;
  --color-divider: #2c2921;
  --color-border: #3b382f;

  --color-text: #d9d4ca;
  --color-text-muted: #928c80;
  --color-text-faint: #5d5950;
  --color-text-inverse: #23211c;

  --color-primary: #e08a56;
  --color-primary-hover: #eda476;
  --color-primary-active: #c96f3d;
  --color-primary-highlight: #3d2a1e;

  --color-ink: #100e0a;
  --color-ink-text: #d9d4ca;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.5);
}

/* ---------- Layout primitives ---------- */

.container {
  width: min(var(--content-default), 100% - clamp(var(--space-8), 8vw, var(--space-16)));
  margin-inline: auto;
}

section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}

/* ---------- Header ---------- */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  min-width: 0;
}

.brand__mark {
  flex-shrink: 0;
  color: var(--color-primary);
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  letter-spacing: 0.01em;
  line-height: 1.1;
  white-space: nowrap;
}

.brand__sub {
  display: block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--color-text);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-6);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}

[data-theme='dark'] .btn--primary {
  color: #1c130c;
}

.btn--primary:hover {
  background: var(--color-primary-hover);
}

.btn--ghost {
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--color-text-muted);
  background: var(--color-surface);
}

@media (max-width: 760px) {
  .nav {
    display: none;
  }
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(var(--space-20), 12vw, var(--space-32));
}

.hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  color: var(--color-text);
  opacity: 0.05;
}

.hero__inner {
  position: relative;
  display: grid;
  gap: var(--space-8);
  max-width: 46rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.eyebrow::before {
  content: '';
  width: 2rem;
  height: 2px;
  background: var(--color-primary);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-3xl);
  line-height: 1.05;
  letter-spacing: -0.015em;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-primary);
}

.hero__lead {
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
  max-width: 38rem;
  line-height: 1.55;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  list-style: none;
}

.hero__facts li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.hero__facts svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ---------- Section headings ---------- */

.section-head {
  display: grid;
  gap: var(--space-4);
  margin-bottom: clamp(var(--space-10), 6vw, var(--space-16));
  max-width: 40rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  letter-spacing: -0.01em;
}

.section-head p {
  color: var(--color-text-muted);
}

/* ---------- Leistungen ---------- */

.services {
  background: var(--color-surface-2);
  border-block: 1px solid var(--color-divider);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: var(--space-5);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  display: grid;
  gap: var(--space-4);
  align-content: start;
}

.card__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
}

.card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
}

.card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- Versprechen / Warum Rickl ---------- */

.promise__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: clamp(var(--space-8), 4vw, var(--space-12));
}

.promise__item {
  display: grid;
  gap: var(--space-3);
  align-content: start;
  padding-top: var(--space-5);
  border-top: 2px solid var(--color-primary);
}

.promise__item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
}

.promise__item p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.promise__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.08em;
}

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

.contact {
  background: var(--color-ink);
  color: var(--color-ink-text);
}

.contact .section-head h2 {
  color: var(--color-ink-text);
}

.contact .section-head p {
  color: oklch(from var(--color-ink-text) l c h / 0.65);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space-5);
}

.contact__card {
  border: 1px solid oklch(from var(--color-ink-text) l c h / 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  display: grid;
  gap: var(--space-3);
  align-content: start;
  text-decoration: none;
  color: inherit;
}

a.contact__card:hover {
  border-color: oklch(from var(--color-primary) l c h / 0.7);
  background: oklch(from var(--color-ink-text) l c h / 0.04);
}

.contact__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

[data-theme='dark'] .contact__label {
  color: var(--color-primary);
}

.contact .contact__label {
  color: #e08a56;
}

.contact .eyebrow::before {
  background: #e08a56;
}

.contact__value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.contact__hint {
  font-size: var(--text-sm);
  color: oklch(from var(--color-ink-text) l c h / 0.6);
}

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

.footer {
  background: var(--color-ink);
  color: oklch(from var(--color-ink-text) l c h / 0.6);
  border-top: 1px solid oklch(from var(--color-ink-text) l c h / 0.12);
  padding-block: var(--space-10);
  font-size: var(--text-xs);
}

.footer__inner {
  display: grid;
  gap: var(--space-6);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  list-style: none;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-ink-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
}

.footer__brand svg {
  color: #e08a56;
}

.footer__link {
  color: #e08a56;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer__link:hover {
  color: #f0a878;
}

/* ---------- Rechtliches (Impressum & Datenschutz) ---------- */

.legal {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.legal__inner {
  display: grid;
  gap: var(--space-4);
}

.legal details {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.legal summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
}

.legal summary::-webkit-details-marker {
  display: none;
}

.legal summary::after {
  content: '+';
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-lg);
  color: var(--color-primary);
  line-height: 1;
  transition: transform var(--transition-interactive);
}

.legal details[open] summary::after {
  content: '–';
}

.legal__body {
  padding: 0 var(--space-6) var(--space-8);
  display: grid;
  gap: var(--space-5);
}

.legal__body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  padding-top: var(--space-2);
}

.legal__body p,
.legal__body li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}

.legal__body ul {
  padding-left: var(--space-5);
  display: grid;
  gap: var(--space-2);
}

.legal__body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal__body a:hover {
  color: var(--color-primary-hover);
}

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}