/* ==========================================================================
   Gebäudeservice Kowalski – Stylesheet
   Farben: Primär #103A5E | Sekundär #17BEBB | Akzent #FF8C42
   ========================================================================== */

:root {
  --color-primary: #103A5E;
  --color-primary-light: #1c5a8a;
  --color-secondary: #17BEBB;
  --color-accent: #FF8C42;
  --color-bg: #ffffff;
  --color-bg-alt: #f6f9fb;
  --color-text: #2b2f33;
  --color-text-light: #5a6169;
  --color-border: #e4e9ed;
  --shadow-soft: 0 10px 30px rgba(16, 58, 94, 0.08);
  --shadow-hover: 0 18px 40px rgba(16, 58, 94, 0.15);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --transition: 0.35s cubic-bezier(.4,0,.2,1);
  --container-width: 1200px;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
}

[data-theme="dark"] {
  --color-bg: #0e1720;
  --color-bg-alt: #16222d;
  --color-text: #e9edf1;
  --color-text-light: #aab4bd;
  --color-border: #223140;
  --shadow-soft: 0 10px 30px rgba(0,0,0,0.35);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

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

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

ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.25;
  font-weight: 600;
}
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3, [data-theme="dark"] h4 { color: #ffffff; }

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: 1.3rem; }

p { color: var(--color-text-light); }

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

section { padding: 96px 0; }

.section-header { text-align: center; max-width: 700px; margin: 0 auto 56px; }
.section-header .eyebrow {
  display: inline-block;
  color: var(--color-secondary);
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 12px;
}
.section-header p { margin-top: 14px; }

.bg-alt { background: var(--color-bg-alt); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 34px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 10px 25px rgba(255, 140, 66, 0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 32px rgba(255, 140, 66, 0.45); }

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
[data-theme="dark"] .btn-secondary { color: #fff; border-color: #fff; }
.btn-secondary:hover { background: var(--color-primary); color: #fff; transform: translateY(-3px); }

.btn-small { padding: 10px 22px; font-size: 0.9rem; }

/* ---------- Header / Navigation ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(228,233,237,0.6);
  transition: background var(--transition), padding var(--transition);
}
[data-theme="dark"] .site-header { background: rgba(14,23,32,0.75); border-bottom-color: rgba(34,49,64,0.6); }

.site-header.scrolled { box-shadow: var(--shadow-soft); }

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-heading); font-weight: 700; font-size: 1.25rem; color: var(--color-primary); }
[data-theme="dark"] .logo { color: #fff; }
.logo span { color: var(--color-secondary); }

.main-nav ul { display: flex; gap: 36px; align-items: center; }
.main-nav a {
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--color-secondary);
  transition: width var(--transition);
}
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.theme-toggle:hover { border-color: var(--color-secondary); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1100;
}
.hamburger span {
  width: 26px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}
[data-theme="dark"] .hamburger span { background: #fff; }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16,58,94,0.92), rgba(16,58,94,0.75)), url('../images/hero-gebaeudereinigung.jpg') center/cover no-repeat fixed;
  z-index: -1;
}
.hero .container { padding-top: 120px; padding-bottom: 60px; }
.hero-content { max-width: 720px; }
.hero-content .eyebrow { color: var(--color-secondary); text-transform: uppercase; letter-spacing: 2px; font-weight: 600; font-size: 0.9rem; }
.hero h1 { color: #fff; margin: 18px 0 20px; }
.hero p.subtitle { color: rgba(255,255,255,0.88); font-size: 1.15rem; max-width: 560px; margin-bottom: 36px; }
.hero-cta { display: flex; gap: 18px; flex-wrap: wrap; }
.trust-badges { display: flex; gap: 32px; margin-top: 56px; flex-wrap: wrap; }
.trust-badges li { display: flex; align-items: center; gap: 10px; font-weight: 500; }
.trust-badges svg { width: 22px; height: 22px; color: var(--color-secondary); flex-shrink: 0; }

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 20px;
}
.scroll-indicator::before {
  content: '';
  position: absolute;
  top: 8px; left: 50%;
  width: 4px; height: 8px;
  background: #fff;
  border-radius: 2px;
  transform: translateX(-50%);
  animation: scrollDown 1.8s infinite;
}
@keyframes scrollDown { 0% { opacity:1; top:8px;} 100% { opacity:0; top:22px;} }

/* ---------- Fade-in / scroll animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in.delay-1 { transition-delay: 0.1s; }
.fade-in.delay-2 { transition-delay: 0.2s; }
.fade-in.delay-3 { transition-delay: 0.3s; }
.fade-in.delay-4 { transition-delay: 0.4s; }

/* ---------- Services / Cards Grid ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }

.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .service-card { background: var(--color-bg-alt); }
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.service-icon {
  width: 64px; height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 24px;
}
.service-icon svg { width: 30px; height: 30px; color: #fff; }
.service-card h3 { margin-bottom: 12px; }
.service-card p { margin-bottom: 20px; font-size: 0.96rem; }
.card-link { color: var(--color-accent); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.card-link svg { width: 16px; height: 16px; transition: transform var(--transition); }
.card-link:hover svg { transform: translateX(4px); }

/* ---------- Why Us ---------- */
.why-us-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 28px;
  border-radius: var(--radius-md);
  transition: background var(--transition);
}
.why-us-item:hover { background: var(--color-bg-alt); }
.why-us-item .icon-circle {
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(23,190,187,0.12);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.why-us-item svg { width: 26px; height: 26px; color: var(--color-secondary); }
.why-us-item h3 { font-size: 1.05rem; margin-bottom: 6px; }
.why-us-item p { font-size: 0.92rem; margin: 0; }

/* ---------- Stats Counter ---------- */
.stats-section {
  background: linear-gradient(135deg, var(--color-primary), #0a2740);
  color: #fff;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-number { font-family: var(--font-heading); font-size: 3rem; font-weight: 700; color: var(--color-secondary); }
.stat-label { margin-top: 8px; color: rgba(255,255,255,0.85); font-size: 0.95rem; }

/* ---------- References / Testimonials ---------- */
.ba-slider {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  aspect-ratio: 4/3;
}
.ba-slider img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ba-slider .after-img { clip-path: inset(0 0 0 50%); }
.ba-slider .slider-handle {
  position: absolute; top: 0; bottom: 0; left: 50%;
  width: 4px; background: #fff;
  cursor: ew-resize;
  transform: translateX(-50%);
}
.ba-slider .slider-handle::after {
  content: '↔';
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 44px; height: 44px;
  background: #fff; color: var(--color-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; box-shadow: var(--shadow-soft);
}
.ba-label { position: absolute; top: 16px; background: rgba(16,58,94,0.85); color: #fff; padding: 4px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; }
.ba-label.before { left: 16px; }
.ba-label.after { right: 16px; }

.testimonial-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
}
[data-theme="dark"] .testimonial-card { background: var(--color-bg-alt); }
.stars { color: var(--color-accent); margin-bottom: 14px; letter-spacing: 2px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.testimonial-author .avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--color-secondary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-family: var(--font-heading);
}
.testimonial-author .name { font-weight: 600; color: var(--color-primary); }
[data-theme="dark"] .testimonial-author .name { color: #fff; }
.testimonial-author .location { font-size: 0.85rem; color: var(--color-text-light); }

/* ---------- Process / Ablauf ---------- */
.process-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; position: relative; }
.process-step { text-align: center; position: relative; }
.step-number {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--color-bg); border: 2px solid var(--color-secondary);
  color: var(--color-primary); font-family: var(--font-heading); font-weight: 700; font-size: 1.4rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px; position: relative; z-index: 2;
}
[data-theme="dark"] .step-number { color: #fff; }
.process-steps::before {
  content: '';
  position: absolute; top: 32px; left: 10%; right: 10%;
  height: 2px; background: var(--color-border);
  z-index: 1;
}
.process-step h3 { font-size: 1rem; }

/* ---------- FAQ Accordion ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  width: 100%;
  background: none; border: none;
  text-align: left;
  padding: 24px 0;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-primary);
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer;
}
[data-theme="dark"] .faq-question { color: #fff; }
.faq-question .icon { transition: transform var(--transition); flex-shrink: 0; margin-left: 16px; }
.faq-question[aria-expanded="true"] .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition), padding var(--transition);
}
.faq-answer p { padding-bottom: 22px; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; }
.contact-form { background: #fff; padding: 44px; border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); border: 1px solid var(--color-border); }
[data-theme="dark"] .contact-form { background: var(--color-bg-alt); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 20px; display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-weight: 600; font-size: 0.9rem; }
.form-group input, .form-group textarea {
  padding: 14px 18px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--color-secondary); }
.checkbox-group { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 24px; }
.checkbox-group input { margin-top: 4px; }
.checkbox-group label { font-size: 0.88rem; color: var(--color-text-light); font-weight: 400; }
.honeypot { position: absolute; left: -9999px; opacity: 0; }

.contact-info-card {
  background: linear-gradient(135deg, var(--color-primary), #0a2740);
  color: #fff;
  padding: 40px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}
.contact-info-card h3 { color: #fff; margin-bottom: 20px; }
.contact-info-item { display: flex; gap: 14px; align-items: center; margin-bottom: 18px; }
.contact-info-item svg { width: 22px; height: 22px; color: var(--color-secondary); flex-shrink: 0; }
.map-placeholder {
  height: 260px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-alt) url('../images/map-placeholder.jpg') center/cover;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-light);
  border: 1px solid var(--color-border);
}
.whatsapp-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: #25D366; color: #fff; padding: 14px 26px;
  border-radius: 50px; font-weight: 600; margin-top: 8px;
  transition: transform var(--transition);
}
.whatsapp-btn:hover { transform: translateY(-3px); }

/* ---------- Footer ---------- */
.site-footer { background: #0a2233; color: rgba(255,255,255,0.75); padding: 80px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px; }
.footer-logo { color: #fff; font-family: var(--font-heading); font-weight: 700; font-size: 1.3rem; margin-bottom: 16px; display: block; }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col a:hover { color: var(--color-secondary); }
.footer-social { display: flex; gap: 14px; margin-top: 18px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--color-secondary); }
.footer-social svg { width: 18px; height: 18px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 24px 0;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: 0.85rem;
}
.footer-bottom a:hover { color: var(--color-secondary); }

/* ---------- Floating buttons ---------- */
.float-btn {
  position: fixed;
  right: 26px;
  width: 58px; height: 58px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-hover);
  z-index: 900;
  transition: transform var(--transition), opacity var(--transition);
  cursor: pointer;
  border: none;
}
.float-whatsapp { bottom: 100px; background: #25D366; color: #fff; }
.float-phone { bottom: 168px; background: var(--color-accent); color: #fff; display: none; }
.float-top { bottom: 32px; background: var(--color-primary); color: #fff; opacity: 0; pointer-events: none; }
.float-top.show { opacity: 1; pointer-events: auto; }
.float-btn:hover { transform: scale(1.1); }
.float-btn svg { width: 26px; height: 26px; }

/* ---------- Cookie Banner ---------- */
.cookie-banner {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: #fff;
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -10px 30px rgba(0,0,0,0.08);
  padding: 24px;
  z-index: 1200;
  transform: translateY(120%);
  transition: transform 0.5s ease;
}
.cookie-banner.show { transform: translateY(0); }
[data-theme="dark"] .cookie-banner { background: var(--color-bg-alt); }
.cookie-inner { max-width: var(--container-width); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cookie-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Loader ---------- */
.page-loader {
  position: fixed; inset: 0; z-index: 2000;
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
.page-loader.hidden { opacity: 0; visibility: hidden; }
.loader-spinner {
  width: 54px; height: 54px;
  border: 4px solid rgba(255,255,255,0.2);
  border-top-color: var(--color-secondary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Sticky CTA (mobile) ---------- */
.sticky-cta {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  background: #fff; border-top: 1px solid var(--color-border);
  padding: 12px 16px; z-index: 950; gap: 12px;
  box-shadow: 0 -6px 20px rgba(0,0,0,0.08);
}
[data-theme="dark"] .sticky-cta { background: var(--color-bg-alt); }
.sticky-cta .btn { flex: 1; padding: 13px 10px; font-size: 0.9rem; }

/* ---------- Legal pages ---------- */
.legal-content { max-width: 860px; margin: 0 auto; padding-top: 160px; }
.legal-content h2 { margin-top: 40px; margin-bottom: 14px; }
.legal-content p, .legal-content li { margin-bottom: 14px; }
.legal-content ul { padding-left: 22px; list-style: disc; }

/* ---------- 404 ---------- */
.error-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 24px; }
.error-page .code { font-size: 8rem; font-family: var(--font-heading); font-weight: 700; color: var(--color-secondary); line-height: 1; }

/* ---------- Skip link (a11y) ---------- */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-primary); color: #fff;
  padding: 12px 20px; z-index: 3000; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 992px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .process-steps { grid-template-columns: repeat(3, 1fr); gap: 40px; }
  .process-steps::before { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .main-nav { position: fixed; top: 0; right: -100%; width: 78%; max-width: 340px; height: 100vh; background: var(--color-bg); box-shadow: -10px 0 40px rgba(0,0,0,0.15); padding: 100px 32px 32px; transition: right var(--transition); }
  .main-nav.open { right: 0; }
  .main-nav ul { flex-direction: column; gap: 24px; align-items: flex-start; }
  .hamburger { display: flex; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .sticky-cta { display: flex; }
  section { padding: 64px 0; }
  .float-phone { display: flex; }
  .float-whatsapp { bottom: 168px; }
  .float-phone { bottom: 100px; }
  .float-top { bottom: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}