/* ==========================================================================
   Grainer Metall & Krantechnik — Stylesheet
   ========================================================================== */

@font-face {
  font-family: "Big Shoulders Display";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../assets/fonts/big-shoulders-display-600.woff2") format("woff2");
}
@font-face {
  font-family: "Big Shoulders Display";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../assets/fonts/big-shoulders-display-700.woff2") format("woff2");
}
@font-face {
  font-family: "Big Shoulders Display";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("../assets/fonts/big-shoulders-display-800.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../assets/fonts/ibm-plex-sans-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../assets/fonts/ibm-plex-sans-500.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../assets/fonts/ibm-plex-sans-600.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../assets/fonts/ibm-plex-sans-700.woff2") format("woff2");
}

/* ---- Tokens -------------------------------------------------------- */
:root {
  --color-ink: #272323;
  --color-charcoal: #3f3b3a;
  --color-green: #0e7733;
  --color-green-deep: #0b5c28;
  --color-paper: #f6f4f1;
  --color-steel: #756f6b;

  --color-paper-raised: #ffffff;
  --color-steel-line: #ded8d3;

  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;

  --step-1: clamp(0.83rem, 0.8rem + 0.15vw, 0.95rem);
  --step0: 1rem;
  --step1: clamp(1.13rem, 1.05rem + 0.35vw, 1.3rem);
  --step2: clamp(1.4rem, 1.25rem + 0.7vw, 1.75rem);
  --step3: clamp(1.7rem, 1.4rem + 1.3vw, 2.3rem);
  --step4: clamp(2.1rem, 1.6rem + 2.2vw, 3.2rem);
  --step5: clamp(2.7rem, 1.7rem + 3.4vw, 4.6rem);

  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-s: 1rem;
  --space-m: 1.5rem;
  --space-l: 2.25rem;
  --space-xl: 3.5rem;
  --space-2xl: 5.5rem;
  --space-3xl: 8rem;

  --content-max: 76rem;
  --border-thin: 1px solid var(--color-steel-line);
  --shadow-card: 0 1px 2px rgba(39, 35, 35, 0.06), 0 8px 24px -12px rgba(39, 35, 35, 0.18);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 160ms;
  --dur-med: 420ms;
}

/* ---- Reset ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
html:focus-within { scroll-behavior: smooth; }
body {
  min-height: 100svh;
  color-scheme: light;
  font-family: var(--font-body);
  font-size: var(--step0);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-paper);
}
img, picture { max-width: 100%; display: block; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }
ul[class], ol[class] { list-style: none; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.05; text-wrap: balance; }
p { text-wrap: pretty; }

@media (prefers-reduced-motion: reduce) {
  html:focus-within { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

:focus-visible {
  outline: 3px solid var(--color-green);
  outline-offset: 3px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---- Layout helpers ---------------------------------------------------- */
.wrap {
  width: min(100% - 2 * var(--space-m), var(--content-max));
  margin-inline: auto;
}
@media (min-width: 60em) {
  .wrap { width: min(100% - 2 * var(--space-xl), var(--content-max)); }
}

section[id] { scroll-margin-top: 5rem; }

.skip-link {
  position: fixed;
  top: -3rem;
  left: var(--space-m);
  z-index: 200;
  background: var(--color-ink);
  color: var(--color-paper);
  padding: var(--space-xs) var(--space-s);
  border-radius: 2px;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus-visible { top: var(--space-m); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-green-deep);
}
.eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 2px;
  background: var(--color-green);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  max-width: 42rem;
  margin-bottom: var(--space-xl);
}
.section-head h2 {
  font-size: var(--step4);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.section-head p {
  font-size: var(--step1);
  color: var(--color-charcoal);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  touch-action: manipulation;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step0);
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.85em 1.5em;
  border: 2px solid transparent;
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.btn svg { width: 1.1em; height: 1.1em; flex: none; }
.btn-primary {
  background: var(--color-green-deep);
  color: #fff;
}
.btn-primary:hover { background: var(--color-green); }
.btn-outline {
  border-color: currentColor;
  color: var(--color-paper);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.12); }
.btn-ghost {
  color: var(--color-ink);
  border-color: var(--color-steel-line);
  background: var(--color-paper-raised);
}
.btn-ghost:hover { border-color: var(--color-green); color: var(--color-green-deep); }
.btn:active { transform: translateY(1px); }

/* ---- Header ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 244, 241, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: var(--border-thin);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  padding-block: var(--space-xs);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  text-decoration: none;
}
.brand img { height: 2.5rem; width: auto; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: transparent;
  border: var(--border-thin);
  border-radius: 2px;
  touch-action: manipulation;
  color: var(--color-ink);
}
.nav-toggle svg { width: 1.4rem; height: 1.4rem; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

.site-nav {
  position: fixed;
  inset: 4.2rem var(--space-m) auto;
  background: var(--color-paper-raised);
  border: var(--border-thin);
  border-radius: 4px;
  box-shadow: var(--shadow-card);
  padding: var(--space-s);
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
  transform: translateY(-0.5rem);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), visibility var(--dur-fast);
}
.site-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.site-nav a {
  display: block;
  padding: var(--space-xs) var(--space-s);
  text-decoration: none;
  font-weight: 600;
  border-radius: 2px;
}
.site-nav a:hover, .site-nav a.is-active { color: var(--color-green-deep); background: var(--color-paper); }

@media (min-width: 56em) {
  .nav-toggle { display: none; }
  .site-nav {
    position: static;
    inset: auto;
    flex-direction: row;
    gap: var(--space-m);
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .site-nav a { padding: var(--space-3xs) 0; position: relative; }
  .site-nav a::after {
    content: "";
    position: absolute;
    left: 0; right: 100%; bottom: -2px;
    height: 2px;
    background: var(--color-green);
    transition: right var(--dur-med) var(--ease-out);
  }
  .site-nav a:hover::after, .site-nav a.is-active::after { right: 0; }
  .site-nav a:hover, .site-nav a.is-active { background: none; }
}

/* ---- Hero --------------------------------------------------------------- */
.hero {
  position: relative;
  background: var(--color-charcoal);
  color: var(--color-paper);
  overflow: clip;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(39,35,35,0.15), rgba(39,35,35,0.55)),
    repeating-linear-gradient(135deg, rgba(255,255,255,0.03) 0 2px, transparent 2px 26px);
  pointer-events: none;
}
.hero .wrap {
  position: relative;
  display: grid;
  gap: var(--space-xl);
  padding-block: var(--space-2xl) var(--space-3xl);
}
@media (min-width: 62em) {
  .hero .wrap { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}
.hero-copy .eyebrow { color: #bfe3cd; }
.hero-copy .eyebrow::before { background: #bfe3cd; }
.hero-copy h1 {
  font-size: var(--step5);
  font-weight: 800;
  margin-top: var(--space-s);
  letter-spacing: -0.01em;
}
.hero-copy h1 em {
  font-style: normal;
  color: #4fd881;
}
.hero-copy p {
  margin-top: var(--space-m);
  font-size: var(--step1);
  color: #d9d5d1;
  max-width: 34rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
  margin-top: var(--space-l);
}
.hero-art {
  position: relative;
  display: flex;
  justify-content: center;
}
.hero-art svg {
  width: 100%;
  max-width: 30rem;
  height: auto;
  color: #4fd881;
}
.hero-art .rig-line {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw 2.4s var(--ease-out) forwards 0.2s;
}
.hero-art .rig-fill { fill: currentColor; opacity: 0; animation: fade-in 0.6s var(--ease-out) forwards 2.1s; }
.hero-art .rig-accent { stroke: #f6f4f1; opacity: 0.5; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fade-in { to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .hero-art .rig-line { stroke-dashoffset: 0; animation: none; }
  .hero-art .rig-fill { opacity: 1; animation: none; }
}

/* ---- Über uns ------------------------------------------------------------ */
.about { padding-block: var(--space-3xl); }
.about .wrap {
  display: grid;
  gap: var(--space-2xl);
}
@media (min-width: 62em) {
  .about .wrap { grid-template-columns: 1fr 1fr; align-items: start; }
}
.about-copy p { font-size: var(--step1); color: var(--color-charcoal); margin-top: var(--space-s); }
.about-copy p + p { margin-top: var(--space-m); }
.badge-row { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-l); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  font-size: var(--step-1);
  font-weight: 600;
  padding: var(--space-3xs) var(--space-s);
  border: var(--border-thin);
  border-radius: 999px;
  background: var(--color-paper-raised);
}
.badge svg { width: 1rem; height: 1rem; color: var(--color-green-deep); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: var(--border-thin);
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-paper-raised);
}
.stat-grid dl { padding: var(--space-l); border-right: var(--border-thin); border-bottom: var(--border-thin); }
.stat-grid dl:nth-child(2n) { border-right: none; }
.stat-grid dl:nth-last-child(-n+2) { border-bottom: none; }
.stat-grid dt { font-family: var(--font-display); font-size: var(--step3); font-weight: 800; color: var(--color-green-deep); }
.stat-grid dd { margin-top: var(--space-3xs); font-size: var(--step-1); color: var(--color-charcoal); }

/* ---- Leistungen ---------------------------------------------------------- */
.services { padding-block: var(--space-3xl); background: var(--color-paper-raised); border-block: var(--border-thin); }
.service-list {
  display: grid;
  gap: var(--space-l);
}
.service-card {
  display: grid;
  gap: var(--space-l);
  padding-block: var(--space-l);
  border-top: var(--border-thin);
}
@media (min-width: 56em) {
  .service-card { grid-template-columns: 16rem 1fr; align-items: start; }
}
.service-index {
  font-family: var(--font-display);
  font-size: var(--step3);
  font-weight: 800;
  color: var(--color-steel);
}
.service-card h3 {
  font-size: var(--step2);
  font-weight: 700;
  margin-top: var(--space-2xs);
}
.service-card > .service-intro p { color: var(--color-charcoal); margin-top: var(--space-2xs); max-width: 30rem; }

.service-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2xs);
}
.service-gallery button {
  position: relative;
  border: none;
  background: none;
  padding: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 2px;
  touch-action: manipulation;
}
.service-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-med) var(--ease-out);
}
.service-gallery button:hover img, .service-gallery button:focus-visible img { transform: scale(1.06); }
.service-gallery button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(39, 35, 35, 0.45));
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.service-gallery button:hover::after, .service-gallery button:focus-visible::after { opacity: 1; }

@media (max-width: 30em) {
  .service-gallery { grid-template-columns: repeat(3, 1fr); }
}

/* ---- Lightbox ------------------------------------------------------------ */
dialog#lightbox {
  border: none;
  padding: 0;
  max-width: 100vw;
  max-height: 100vh;
  width: 100%;
  height: 100%;
  background: rgba(20, 18, 18, 0.96);
  color: #fff;
  overscroll-behavior: contain;
}
dialog#lightbox::backdrop { background: transparent; }
.lightbox-inner {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.lightbox-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-s) var(--space-m);
  font-size: var(--step-1);
  color: #cfc9c4;
}
.lightbox-figure {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0 var(--space-3xl);
  min-height: 0;
  overflow: hidden;
}
.lightbox-figure img {
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
  border-radius: 2px;
  touch-action: none;
  transform-origin: 0 0;
  cursor: zoom-in;
}
.lightbox-figure img.is-zoomed { cursor: grab; }
.lightbox-figure img.is-panning { cursor: grabbing; }
.lightbox-figure figcaption { position: absolute; bottom: -2.2rem; left: 0; right: 0; text-align: center; color: #cfc9c4; font-size: var(--step-1); }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.05);
  touch-action: manipulation;
  color: #fff;
}
.icon-btn:hover { background: rgba(255,255,255,0.16); }
.icon-btn svg { width: 1.3rem; height: 1.3rem; }

.lightbox-nav {
  position: absolute;
  top: 50%;
  translate: 0 -50%;
}
.lightbox-prev { left: var(--space-m); }
.lightbox-next { right: var(--space-m); }
@media (max-width: 40em) {
  .lightbox-figure { padding: 0 var(--space-3xs); }
  .lightbox-figure img { max-height: 82vh; }
  .lightbox-nav {
    background: rgba(20, 18, 18, 0.55);
    backdrop-filter: blur(2px);
  }
  .lightbox-prev { left: var(--space-2xs); }
  .lightbox-next { right: var(--space-2xs); }
}

/* ---- Kontakt ------------------------------------------------------------- */
.contact { padding-block: var(--space-3xl); }
.contact .wrap {
  display: grid;
  gap: var(--space-2xl);
}
@media (min-width: 56em) {
  .contact .wrap { grid-template-columns: 1fr 1fr; }
}
.contact-card {
  background: var(--color-charcoal);
  color: var(--color-paper);
  border-radius: 4px;
  padding: var(--space-xl);
}
.contact-list { display: flex; flex-direction: column; gap: var(--space-m); margin-top: var(--space-m); }
.contact-list a, .contact-list address {
  display: flex;
  align-items: flex-start;
  gap: var(--space-s);
  text-decoration: none;
  font-style: normal;
  font-size: var(--step1);
}
.contact-list a span { min-width: 0; overflow-wrap: anywhere; }
.contact-list svg { width: 1.4rem; height: 1.4rem; flex: none; color: #4fd881; margin-top: 0.15em; }
.contact-list a:hover { color: #4fd881; }
.social-row { display: flex; gap: var(--space-s); margin-top: var(--space-l); }
.social-row a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgba(246,244,241,0.35);
  border-radius: 999px;
}
.social-row a:hover { border-color: #4fd881; color: #4fd881; }
.social-row svg { width: 1.25rem; height: 1.25rem; }

.contact-form-note {
  border: var(--border-thin);
  border-radius: 4px;
  padding: var(--space-xl);
  background: var(--color-paper-raised);
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
}
.contact-form-note h3 { font-size: var(--step2); }
.contact-form-note p { color: var(--color-charcoal); }

/* ---- Footer --------------------------------------------------------------- */
.site-footer {
  background: var(--color-ink);
  color: #cfc9c4;
  padding-block: var(--space-l);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-m);
  align-items: center;
  justify-content: space-between;
}
.site-footer .brand img { height: 1.9rem; filter: brightness(0) invert(1); opacity: 0.9; }
.footer-links { display: flex; gap: var(--space-m); flex-wrap: wrap; font-size: var(--step-1); }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: #4fd881; }
.footer-social { display: flex; gap: var(--space-s); }
.footer-social a { color: inherit; }
.footer-social svg { width: 1.2rem; height: 1.2rem; }
.footer-bottom {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-m);
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-s);
  padding-top: var(--space-s);
  border-top: 1px solid rgba(246, 244, 241, 0.1);
}
.footer-fineprint { font-size: var(--step-1); color: #92897f; }
.credit-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  font-size: var(--step-1);
  color: #92897f;
  text-decoration: none;
}
.credit-link img { height: 1.3em; width: auto; filter: brightness(1.4); }
.credit-link strong { color: #cfc9c4; font-weight: 600; }
.credit-link:hover { color: #cfc9c4; }
.credit-link:hover strong { color: #4fd881; }

/* ---- Legal pages ------------------------------------------------------------ */
.legal { padding-block: var(--space-2xl); }
.legal .wrap { max-width: 46rem; }
.legal h1 { font-size: var(--step4); margin-bottom: var(--space-l); }
.legal h2 { font-size: var(--step2); margin-top: var(--space-xl); margin-bottom: var(--space-xs); }
.legal p, .legal li { color: var(--color-charcoal); }
.legal ul { list-style: disc; padding-left: 1.3em; display: flex; flex-direction: column; gap: var(--space-3xs); }
.legal a { color: var(--color-green-deep); }
.legal .back-link { display: inline-block; margin-top: var(--space-xl); }