/* ============================================================
   style.css — Obeco GmbH Redesign (Petrol-Variante C)
   ============================================================ */

/* ---------- Custom Properties ---------- */
:root {
  --color-nav:          #0d6e6e;
  --color-footer:       #0d4f4f;
  --color-hero-bg:      #ffffff;
  --color-hero-h:       #0d4f4f;
  --color-text:         #555555;
  --color-cta:          #0d6e6e;
  --color-card-border:  #b2d8d8;
  --color-card-bg:      #ffffff;
  --color-page-bg:      #f7fafa;
  --color-link:         #0d6e6e;
  --color-nav-hover:    #0a5555;

  --font-base: system-ui, -apple-system, sans-serif;
  --text-sm: 13px;
  --text-base: 15px;
  --text-lg: 18px;
  --leading: 1.7;

  --max-w: 1120px;
  --max-w-content: 860px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-base);
  font-size: var(--text-base);
  line-height: var(--leading);
  color: var(--color-text);
  background: var(--color-page-bg);
}

img { max-width: 100%; display: block; }
a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Links im Fließtext immer unterstrichen */
.page-content-inner a,
.hero-text a {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-content-inner a:hover,
.hero-text a:hover {
  text-decoration: underline;
  color: var(--color-nav-hover);
}
ul { list-style: none; }

/* ---------- Utility ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  background: var(--color-nav);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.18);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 0;
}

/* Logo */
.nav-logo {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  letter-spacing: .5px;
  flex-shrink: 0;
  margin-right: auto;
}
.nav-logo:hover { text-decoration: none; color: #e0f7f7; }
.nav-logo span { color: #b2d8d8; font-weight: 400; }

/* Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a,
.nav-links button {
  color: #d4f0f0;
  font-size: var(--text-sm);
  padding: 8px 12px;
  border-radius: 4px;
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--font-base);
  white-space: nowrap;
  transition: background .15s, color .15s;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a:hover,
.nav-links button:hover {
  background: rgba(255,255,255,.12);
  color: #fff;
  text-decoration: none;
}

/* Kontakt-Button */
.nav-links .nav-cta {
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.45);
  margin-left: 8px;
  padding: 7px 14px;
}
.nav-links .nav-cta:hover {
  border-color: #fff;
  background: rgba(255,255,255,.15);
}

/* Extern-Links */
.nav-links .nav-ext::after {
  content: "↗";
  font-size: 11px;
  opacity: .7;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: #fff;
  border: 1px solid var(--color-card-border);
  border-radius: 6px;
  min-width: 240px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12);
  padding: 6px 0;
}

.dropdown-menu a {
  display: block;
  color: var(--color-text) !important;
  padding: 9px 18px;
  font-size: var(--text-base);
  background: none;
  border-radius: 0;
}
.dropdown-menu a:hover {
  background: var(--color-page-bg);
  color: var(--color-nav) !important;
  text-decoration: none;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  display: block;
}

/* Chevron */
.nav-chevron {
  font-size: 10px;
  transition: transform .2s;
}
.nav-dropdown:hover .nav-chevron,
.nav-dropdown:focus-within .nav-chevron {
  transform: rotate(180deg);
}

/* Hamburger */
.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}
.nav-burger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .2s;
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; align-items: flex-start; gap: 2px; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 60px;
    left: 0; right: 0;
    background: var(--color-nav);
    padding: 12px 16px 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,.2);
  }
  .nav-links.open .dropdown-menu {
    display: block;
    position: static;
    background: rgba(0,0,0,.15);
    border: none;
    border-radius: 4px;
    box-shadow: none;
    padding: 4px 0;
    width: 100%;
  }
  .nav-links.open .dropdown-menu a {
    color: #d4f0f0 !important;
    padding: 8px 16px;
    font-size: var(--text-sm);
  }
  .nav-links.open .dropdown-menu a:hover {
    background: rgba(255,255,255,.1);
    color: #fff !important;
  }
  .nav-links a,
  .nav-links button {
    width: 100%;
    font-size: var(--text-base);
  }
  .nav-burger { display: flex; }
  .nav-links .nav-cta { margin-left: 0; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: var(--color-hero-bg);
  padding: 48px 24px 40px;
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 48px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 500;
  color: var(--color-hero-h);
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero-text p {
  font-size: var(--text-lg);
  color: var(--color-text);
  max-width: 520px;
  margin-bottom: 32px;
}

.btn-cta {
  display: inline-block;
  background: var(--color-cta);
  color: #fff;
  padding: 14px 28px;
  border-radius: 6px;
  font-size: var(--text-base);
  font-weight: 500;
  transition: background .15s, transform .1s;
  border: none;
  cursor: pointer;
}
.btn-cta:hover {
  background: var(--color-nav-hover);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}

.hero-badges {
  display: flex;
  gap: 20px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.hero-badge {
  font-size: var(--text-sm);
  color: #888;
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-badge::before {
  content: "✓";
  color: var(--color-cta);
  font-weight: 600;
}

/* Hero Illustration */
.hero-illustration {
  width: 100%;
  max-width: 480px;
}

.svg-card-link { cursor: pointer; }
.svg-card-link:hover rect:first-child { opacity: .85; transition: opacity .15s; }

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-text p { margin: 0 auto 32px; }
  .hero-badges { justify-content: center; }
  .hero-illustration {
    max-width: 320px;
    margin: 0 auto;
  }
}

/* ============================================================
   SERVICE CARDS
   ============================================================ */
.services {
  padding: 64px 24px;
  background: var(--color-page-bg);
}

.services h2 {
  text-align: center;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 500;
  color: var(--color-hero-h);
  margin-bottom: 40px;
}

.cards-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card {
  background: var(--color-card-bg);
  border: 1.5px solid var(--color-card-border);
  border-radius: 8px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: box-shadow .2s, transform .15s;
}
.card:hover {
  box-shadow: 0 6px 20px rgba(13,110,110,.12);
  transform: translateY(-3px);
  text-decoration: none;
}

.card-icon {
  font-size: 32px;
  color: var(--color-nav);
  margin-bottom: 16px;
  line-height: 1;
}

.card h3 {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-hero-h);
  margin-bottom: 8px;
}

.card p {
  font-size: var(--text-sm);
  color: var(--color-text);
  flex: 1;
  margin-bottom: 16px;
}

.card-link {
  font-size: var(--text-sm);
  color: var(--color-link);
  font-weight: 500;
}
.card:hover .card-link { text-decoration: underline; }

@media (max-width: 768px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 400px) {
  .cards-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-footer);
  color: rgba(255,255,255,.7);
  padding: 28px 24px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: var(--text-sm);
}

.footer-logo {
  height: 48px;
  width: auto;
  opacity: .8;
}
.footer-logo:hover { opacity: 1; }

.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  color: rgba(255,255,255,.7);
}
.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

@media (max-width: 600px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

/* ============================================================
   SUBPAGE — Page Banner & Content
   ============================================================ */
.page-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.75);
  font-size: var(--text-sm);
  margin-bottom: 12px;
}
.page-back:hover { color: #fff; text-decoration: none; }
.page-back::before { content: "←"; }

.page-banner-inner {
  max-width: var(--max-w-content);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-banner {
  background: var(--color-nav);
  padding: 40px 24px 36px;
  color: #fff;
}
.page-banner h1 {
  font-size: clamp(22px, 3.5vw, 34px);
  font-weight: 500;
  margin: 0;
}

.page-content {
  background: #fff;
  padding: 48px 24px;
}
.page-content-inner {
  max-width: var(--max-w-content);
  margin: 0 auto;
}
.page-content h2 {
  font-size: 20px;
  font-weight: 500;
  color: var(--color-hero-h);
  margin: 32px 0 12px;
}
.page-content h2:first-child { margin-top: 0; }
.page-content p { margin-bottom: 14px; }
.page-content ul {
  list-style: disc;
  padding-left: 22px;
  margin-bottom: 14px;
}
.page-content ul li { margin-bottom: 6px; }