/* ==========================================================================
   Jens Uhlig Bauunternehmen — Onepager
   Mobile-first Stylesheet
   ========================================================================== */

@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-800.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

/* Headline-Font: Archivo — kräftig, kantig, für Hero & Überschriften */
@font-face {
  font-family: "Archivo";
  src: url("../fonts/archivo-800.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Archivo";
  src: url("../fonts/archivo-900.woff2") format("woff2");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

/* ---------- Design tokens ---------- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f9;
  --color-text: #1b2430;
  --color-text-soft: #4a5563; /* Darkened for better contrast */
  --color-dark: #10161d;
  --color-dark-alt: #1a232d;
  --color-primary: #125ea6; /* Darkened for better contrast */
  --color-primary-dark: #0d4d99;
  --color-secondary: #2196f3;
  --color-accent: #f5a623;
  --color-accent-dark: #d88c0f;
  --color-border: #e3e7ec;
  --color-white: #ffffff;

  --font-base: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-headline: "Archivo", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;

  --shadow-sm: 0 2px 8px rgba(16, 22, 29, 0.08);
  --shadow-md: 0 8px 24px rgba(16, 22, 29, 0.12);
  --shadow-lg: 0 20px 48px rgba(16, 22, 29, 0.18);

  --container-w: 1160px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-headline);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

h3,
h4 {
  text-transform: none;
}

p {
  margin: 0;
}

button {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-2);
}

section {
  padding: var(--space-5) 0;
}

.section-head {
  max-width: 640px;
  margin: 0 0 var(--space-4);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-accent);
  display: inline-block;
}

.section-head h2 {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  margin-bottom: var(--space-1);
}

.section-head p {
  color: var(--color-text-soft);
  font-size: 1rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-dark);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--color-white);
}

.btn-ghost:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.btn-block {
  width: 100%;
}

/* ---------- Header / Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(16, 22, 29, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.2;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  flex-shrink: 0;
}

.brand small {
  display: block;
  font-weight: 500;
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 0.4rem;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  padding: var(--space-2);
  gap: 0.25rem;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-menu.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.nav-menu a {
  color: rgba(255, 255, 255, 0.85);
  padding: 0.75rem 0.5rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.nav-menu a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.nav-menu a.btn-primary {
  color: var(--color-dark);
}

.nav-menu a.btn-primary:hover {
  color: var(--color-dark);
}

.nav-cta {
  margin-top: 0.5rem;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(ellipse at top right, #1c2b3a 0%, var(--color-dark) 55%);
  color: var(--color-white);
  padding: var(--space-6) 0 var(--space-5);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 2px, transparent 2px 26px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  gap: var(--space-4);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-2);
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
}

.hero h1 {
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 900;
  margin-bottom: var(--space-2);
}

.hero h1 span {
  color: var(--color-accent);
}

.hero p.lead {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.78);
  max-width: 46ch;
  margin-bottom: var(--space-3);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--space-4);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-3);
}

.hero-stat b {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-white);
}

.hero-stat span {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Seal / trust badge — nod to the hand-drawn "Seit 2001" circle */
.hero-seal {
  justify-self: center;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  border: 2px dashed rgba(255, 255, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  flex-shrink: 0;
}

.hero-seal-inner {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  background: linear-gradient(155deg, var(--color-primary), var(--color-primary-dark));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: var(--shadow-md);
}

.hero-seal-inner strong {
  font-family: var(--font-headline);
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1;
}

.hero-seal-inner span {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.85;
  margin-top: 0.25rem;
}

/* ---------- Services ---------- */
.services {
  background: var(--color-bg);
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.service-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-2);
}

.service-icon svg {
  width: 26px;
  height: 26px;
  stroke: #fff;
}

.service-card h3 {
  font-size: 1.08rem;
  margin-bottom: 0.4rem;
}

.service-card p {
  color: var(--color-text-soft);
  font-size: 0.94rem;
}

/* ---------- About / Network ---------- */
.about {
  background: var(--color-bg-alt);
}

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

.about-text p {
  color: var(--color-text-soft);
  margin-bottom: var(--space-2);
  font-size: 1.02rem;
}

.about-points {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.about-point {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2);
}

.about-point .check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
}

.about-point strong {
  display: block;
  font-size: 0.98rem;
}

.about-point span {
  color: var(--color-text-soft);
  font-size: 0.88rem;
}

/* ---------- Gallery / photo placeholders ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.gallery-item {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  border: 2px dashed var(--color-border);
  background: var(--color-bg-alt);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  color: var(--color-text-soft);
  text-align: center;
  padding: var(--space-2);
}

.gallery-item svg {
  width: 30px;
  height: 30px;
  stroke: var(--color-text-soft);
  opacity: 0.6;
}

.gallery-item span {
  font-size: 0.8rem;
  font-weight: 600;
}

/* ---------- Contact ---------- */
.contact {
  background: var(--color-dark);
  color: var(--color-white);
}

.contact .eyebrow {
  color: #64b5f6; /* Lighter blue for dark background */
}

.contact .section-head p {
  color: rgba(255, 255, 255, 0.75);
}

.contact-grid {
  display: grid;
  gap: var(--space-3);
}

.contact-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.contact-list {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.contact-list li {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
}

.contact-list .ico {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-list .ico svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-accent);
}

.contact-list strong {
  display: block;
  font-size: 0.95rem;
}

.contact-list a,
.contact-list span.value {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.92rem;
}

.contact-list a:hover {
  color: var(--color-white);
}

.contact-area {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-2);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
}

.map-placeholder {
  aspect-ratio: 16/10;
  border-radius: var(--radius-md);
  border: 2px dashed rgba(255, 255, 255, 0.18);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
  padding: var(--space-3);
}

.map-placeholder svg {
  width: 32px;
  height: 32px;
  stroke: rgba(255, 255, 255, 0.4);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-dark-alt);
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-4) 0 var(--space-3);
  font-size: 0.85rem;
}

.footer-grid {
  display: grid;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: var(--space-2);
}

.footer-brand p {
  margin-top: 0.5rem;
  max-width: 40ch;
}

.footer-links h3 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.footer-links ul {
  display: grid;
  gap: 0.5rem;
}

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

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-ai-note {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.78rem;
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
}

.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

/* ---------- Legal pages ---------- */
.legal-page {
  background: var(--color-dark);
  color: #fff;
  padding: var(--space-5) 0 var(--space-4);
}

.legal-page h1 {
  font-size: clamp(1.7rem, 5vw, 2.4rem);
}

.legal-page .lead {
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--space-1);
}

.legal-body {
  padding: var(--space-4) 0 var(--space-6);
}

.legal-body h2 {
  font-size: 1.2rem;
  margin: var(--space-4) 0 var(--space-1);
}

.legal-body h2:first-child {
  margin-top: 0;
}

.legal-body p,
.legal-body li {
  color: var(--color-text-soft);
  font-size: 0.98rem;
  margin-bottom: var(--space-1);
}

.legal-body ul {
  margin-bottom: var(--space-2);
}

.legal-body li {
  position: relative;
  padding-left: 1.1rem;
}

.legal-body li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: var(--space-3);
  font-weight: 600;
  color: var(--color-primary);
}

/* ==========================================================================
   Breakpoints — mobile-first progressive enhancement
   ========================================================================== */

@media (min-width: 640px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (min-width: 860px) {
  .nav-toggle {
    display: none;
  }

  .nav-menu {
    position: static;
    flex-direction: row;
    align-items: center;
    background: none;
    border: none;
    padding: 0;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    gap: 0.5rem;
  }

  .nav-menu a {
    padding: 0.5rem 0.75rem;
  }

  .nav-cta {
    margin-top: 0;
    margin-left: 0.5rem;
  }

  .hero-inner {
    grid-template-columns: 1.4fr 0.6fr;
  }

  .about-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }

  .about-points {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .hero {
    padding: 7rem 0 var(--space-5);
  }
}