/* ============================================================
   OSTEO-TRIER.DE – REDESIGN
   Farbpalette: Tiefes Petrol (#1a4a5a), Warmes Creme (#f5f0e8),
   Akzent Terrakotta (#c47a5a), Hellgrau (#f0ede8), Weiß
   ============================================================ */

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary:    #1a4a5a;
  --color-primary-dk: #0f2e38;
  --color-accent:     #c47a5a;
  --color-accent-lt:  #d9967a;
  --color-bg:         #ffffff;
  --color-bg-light:   #f5f2ed;
  --color-text:       #2c2c2c;
  --color-text-muted: #6b6b6b;
  --color-border:     #ddd8d0;
  --font-serif:       'Playfair Display', Georgia, serif;
  --font-sans:        'Lato', 'Helvetica Neue', Arial, sans-serif;
  --radius:           8px;
  --shadow:           0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg:        0 8px 40px rgba(0,0,0,0.14);
  --transition:       0.25s ease;
  --max-width:        1160px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--color-primary-dk);
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 600; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); font-weight: 600; }

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

.section-intro {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0.8rem auto 0;
}

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

.section { padding: 5rem 0; }
.bg-light { background: var(--color-bg-light); }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 0.75rem 1.8rem;
  border-radius: 50px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: #a8623f;
  border-color: #a8623f;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(196,122,90,0.35);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-white {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.btn-white:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}
.btn-outline-white {
  background: rgba(15, 45, 55, 0.72);
  color: #fff;
  border-color: rgba(255,255,255,0.9);
  backdrop-filter: blur(6px);
  text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
.btn-outline-white:hover {
  background: rgba(15, 45, 55, 0.92);
  color: #fff;
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-sm { padding: 0.5rem 1.2rem; font-size: 0.85rem; }

/* ---- Header / Nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  color: var(--color-primary-dk);
}
.logo-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
}
.logo-sub {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
}
.logo:hover { color: var(--color-primary); }

.main-nav > ul {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}
.main-nav > ul > li > a {
  display: block;
  padding: 0.5rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li > a.active {
  color: var(--color-primary);
  background: rgba(26,74,90,0.07);
}

/* Dropdown */
.has-dropdown { position: relative; }
.dropdown {
  /* Sichtbarkeit über opacity/pointer-events statt display:none,
     damit die Maus beim Überfahren der Lücke nicht abbricht */
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  position: absolute;
  top: 100%;          /* direkt unter dem Elternelement – keine Lücke */
  left: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  padding: 0.75rem 0 0.5rem; /* oben etwas Puffer als unsichtbare Brücke */
  z-index: 200;
  transform: translateY(0);
  transition: opacity 0.18s ease, visibility 0.18s ease;
}
/* Unsichtbare Brücke: verhindert, dass die Maus beim Überqueren
   der Lücke zwischen Nav-Link und Dropdown das Menü schließt */
.has-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 12px; /* überbrückt den Abstand zum Dropdown */
  background: transparent;
}
.dropdown li a {
  display: block;
  padding: 0.55rem 1.2rem;
  font-size: 0.88rem;
  color: var(--color-text);
  transition: background var(--transition), color var(--transition);
}
.dropdown li a:hover {
  background: var(--color-bg-light);
  color: var(--color-primary);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown,
.has-dropdown.dropdown-open .dropdown {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 28, 36, 0.82) 0%,
    rgba(26, 74, 90, 0.65) 50%,
    rgba(10, 28, 36, 0.45) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  color: #fff;
  max-width: 680px;
  padding: 6rem 1.5rem;
}
.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  margin-bottom: 1rem;
}
.hero h1 {
  color: #fff;
  margin-bottom: 1.2rem;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.hero-lead {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.88);
  margin-bottom: 2rem;
  max-width: 520px;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ---- Trust Bar ---- */
.trust-bar {
  background: var(--color-primary);
  padding: 1.2rem 0;
}
.trust-bar-inner {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.9);
  font-size: 0.9rem;
  font-weight: 600;
}
.trust-icon {
  color: var(--color-accent-lt);
  font-size: 1.1rem;
}

/* ---- About ---- */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: center;
}
.about-image {
  position: relative;
}
.about-image > img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 380px;
  object-fit: cover;
}
.vod-badge {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: #fff;
  border-radius: 50%;
  padding: 0.5rem;
  box-shadow: var(--shadow);
}
.vod-badge img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: contain;
}
.about-text h2 { margin-bottom: 1.2rem; }
.about-text p { color: var(--color-text-muted); margin-bottom: 1rem; }
.about-text .btn { margin-top: 0.5rem; }

/* ---- Services Grid ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.8rem;
}
.service-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.service-img {
  height: 200px;
  overflow: hidden;
}
.service-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.service-card:hover .service-img img { transform: scale(1.05); }
.service-body {
  padding: 1.5rem;
}
.service-body h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
  color: var(--color-primary-dk);
}
.service-body p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}
.link-arrow {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}
.link-arrow:hover { color: var(--color-primary); }

/* ---- Info Strip ---- */
.info-strip-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}
.info-text h2 { margin-bottom: 1rem; }
.info-text p { color: var(--color-text-muted); margin-bottom: 1.2rem; }
.info-list {
  list-style: none;
  margin-bottom: 1.8rem;
}
.info-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
  color: var(--color-text);
}
.info-list li:last-child { border-bottom: none; }
.info-list a { color: var(--color-primary); font-weight: 600; }
.info-list a:hover { color: var(--color-accent); }
.info-image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  object-fit: cover;
  max-height: 420px;
}

/* ---- Qualifikation ---- */
.qual-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: center;
}
.qual-image img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  object-fit: cover;
}
.qual-text h2 { margin-bottom: 1rem; }
.qual-text > p { color: var(--color-text-muted); margin-bottom: 1rem; }
.qual-list {
  list-style: none;
  margin-bottom: 1.8rem;
}
.qual-list li {
  padding: 0.4rem 0 0.4rem 1.4rem;
  position: relative;
  font-size: 0.93rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
.qual-list li:last-child { border-bottom: none; }
.qual-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}
.vod-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #fff;
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  box-shadow: var(--shadow);
  margin-top: 0.5rem;
}
.vod-info img { flex-shrink: 0; border-radius: 4px; }
.vod-info p { font-size: 0.88rem; color: var(--color-text-muted); }

/* ---- Region Tags ---- */
.region-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1.5rem;
}
.region-tags span {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  padding: 0.4rem 1rem;
  font-size: 0.88rem;
  color: var(--color-primary);
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
}
.region-tags span:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ---- CTA Banner ---- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary-dk) 0%, var(--color-primary) 100%);
  padding: 5rem 0;
  text-align: center;
  color: #fff;
}
.cta-inner h2 {
  color: #fff;
  margin-bottom: 0.8rem;
}
.cta-inner p {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}
.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-primary-dk);
  color: rgba(255,255,255,0.75);
  padding-top: 4rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}
.footer-brand .logo-name {
  color: #fff;
  font-size: 1.2rem;
}
.footer-brand .logo-sub {
  color: var(--color-accent-lt);
  font-size: 0.7rem;
}
.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  margin-top: 1rem;
  color: rgba(255,255,255,0.65);
}
.footer-brand a { color: rgba(255,255,255,0.8); }
.footer-brand a:hover { color: var(--color-accent-lt); }
.footer-nav h3 {
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-nav ul li {
  margin-bottom: 0.4rem;
}
.footer-nav ul li a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}
.footer-nav ul li a:hover { color: #fff; }
.footer-contact h3 {
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.footer-contact p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 1rem;
}
.footer-contact .btn {
  display: block;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.2rem 0;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.45);
  text-align: center;
}
.footer-bottom a {
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-bottom a:hover { color: #fff; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.5rem 1.5rem;
  }
  .main-nav.open { display: block; }
  .main-nav > ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }
  .main-nav > ul > li { width: 100%; }
  .main-nav > ul > li > a {
    padding: 0.7rem 0.5rem;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 1rem;
  }
  .dropdown {
    position: static;
    box-shadow: none;
    border: none;
    background: var(--color-bg-light);
    padding: 0;
    border-radius: 0;
  }
  .has-dropdown:hover .dropdown {
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
  }
  .has-dropdown.open .dropdown {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
  }

  .hero { min-height: 70vh; }
  .hero-content { padding: 4rem 1.5rem; }

  .about-inner,
  .info-strip-inner,
  .qual-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-image { order: -1; }
  .vod-badge { right: 0; bottom: -1rem; }
  .qual-image { order: -1; }

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

  .trust-bar-inner { gap: 1rem 2rem; }

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

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-cta { flex-direction: column; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .footer-inner { grid-template-columns: 1fr; }
  .trust-bar-inner { flex-direction: column; align-items: flex-start; padding: 0 1.5rem; }
}

/* ---- Scroll animation ---- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: none;
}