/* AG Bau München — dark cinematic / structured-industrial */

:root {
  --bg: #0d1b26;
  --elevation2: #122535;
  --elevation3: #18303f;
  --text: #f3f6f8;
  --text-secondary: #b3c2cc;
  --text-muted: #7d909c;
  --brand-navy: #2c3e50;
  --accent: #3cba54;
  --border: rgba(255, 255, 255, 0.08);
  --section-padding: clamp(4rem, 10vw, 8rem);
  --container-max: 1200px;
  --card-radius: 16px;
  --btn-radius: 10px;
  --font-display: "Sora", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --shadow-nav: 0 4px 24px rgba(0, 0, 0, 0.35);
  --transition-reveal: 700ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--container-max));
  margin-inline: auto;
}

/* ── Navbar ── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(13, 27, 38, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-nav);
}

.navbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
  gap: 1rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.navbar-brand:hover {
  text-decoration: none;
  color: var(--text);
}

.logo-plaque {
  background: #fff;
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-plaque img {
  height: 36px;
  width: auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--elevation3);
  border: 1px solid var(--border);
  border-radius: var(--btn-radius);
  cursor: pointer;
  color: var(--text);
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  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-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0.5rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--btn-radius);
  text-decoration: none;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
  background: var(--elevation3);
  text-decoration: none;
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Hero ── */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("/assets/detail-neubauten.jpg");
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(13, 27, 38, 0.92) 0%,
    rgba(13, 27, 38, 0.75) 40%,
    rgba(13, 27, 38, 0.55) 70%,
    rgba(13, 27, 38, 0.95) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-block: var(--section-padding);
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.15;
  max-width: 18ch;
  margin: 0 0 1.25rem;
}

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

.hero-subline {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 42ch;
  margin: 0 0 2rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--btn-radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn-primary:hover {
  background: #34a84a;
  color: #fff;
}

.btn-secondary {
  background: var(--elevation3);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--brand-navy);
  color: var(--text);
}

/* ── Sections ── */

section {
  padding-block: var(--section-padding);
}

.section-header {
  margin-bottom: 3rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 0.5rem;
}

.section-header p {
  color: var(--text-muted);
  margin: 0;
  max-width: 50ch;
}

.section-alt {
  background: var(--elevation2);
}

/* ── Service cards ── */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.service-card {
  background: var(--elevation3);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-card-image {
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.service-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover .service-card-image img {
  transform: scale(1.03);
}

.service-card-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.service-card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  margin: 0;
}

.service-card .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* ── About ── */

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.about-grid p {
  color: var(--text-secondary);
  margin: 0;
}

/* ── Contact ── */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  min-height: 44px;
  padding: 0.65rem 0.85rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
  background: var(--elevation3);
  border: 1px solid var(--border);
  border-radius: var(--btn-radius);
  transition: border-color 0.2s;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.contact-card {
  background: var(--elevation3);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 1.5rem;
}

.contact-card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0 0 1rem;
}

.contact-card p {
  color: var(--text-secondary);
  margin: 0 0 0.75rem;
}

.contact-card a {
  word-break: break-word;
}

/* ── Footer ── */

.site-footer {
  background: var(--elevation2);
  border-top: 1px solid var(--border);
  padding-block: var(--section-padding);
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-col h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 1rem;
}

.footer-col p {
  color: var(--text-secondary);
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin: 1rem 0 0.35rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--elevation3);
  border: 1px solid var(--border);
  border-radius: var(--btn-radius);
  color: var(--text-secondary);
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.social-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

.social-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.footer-ornament {
  position: absolute;
  bottom: 1rem;
  right: 1.5rem;
  opacity: 0.15;
  pointer-events: none;
}

.footer-ornament img {
  width: 64px;
  height: auto;
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-bottom p {
  margin: 0;
}

/* ── Modal ── */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(13, 27, 38, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--elevation2);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(28px);
  transition: transform var(--transition-reveal);
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.5rem 0;
}

.modal-header h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0;
}

.modal-close {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--elevation3);
  border: 1px solid var(--border);
  border-radius: var(--btn-radius);
  color: var(--text);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
}

.modal-close:hover,
.modal-close:focus-visible {
  background: var(--brand-navy);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.modal-body {
  padding: 1rem 1.5rem 1.5rem;
}

.modal-body img {
  border-radius: calc(var(--card-radius) - 4px);
  margin-bottom: 1rem;
  width: 100%;
  object-fit: cover;
  max-height: 280px;
}

.modal-body p {
  color: var(--text-secondary);
  margin: 0 0 1rem;
}

.trades-list {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.35rem;
}

.trades-list li {
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding-left: 1rem;
  position: relative;
}

.trades-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ── Legal page ── */

.legal-page {
  padding-top: 6rem;
  padding-bottom: var(--section-padding);
}

.legal-page h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 2rem;
}

.legal-content {
  max-width: 720px;
}

.legal-content h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
}

.legal-content p {
  color: var(--text-secondary);
  margin: 0 0 1rem;
}

.home-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-weight: 500;
}

/* ── Scroll reveal ── */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ── Reduced motion ── */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .service-card-image img,
  .modal,
  .modal-overlay,
  .site-header,
  .btn {
    transition: none;
  }

  .service-card:hover .service-card-image img {
    transform: none;
  }
}

/* ── Responsive ── */

@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(13, 27, 38, 0.98);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease;
  }

  .nav-links.open {
    max-height: 320px;
    opacity: 1;
  }

  .nav-links a {
    width: 100%;
    padding: 0.75rem 1rem;
  }

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

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

@media (min-width: 768px) and (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid .footer-col:last-child {
    grid-column: 1 / -1;
  }
}