/* ==========================================================================
   Einwich & Lottes GmbH — Flat Design System
   Single stylesheet, zero external dependencies.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens (Palette + Scale)
   -------------------------------------------------------------------------- */
:root {
  /* Palette */
  --color-blue: #2655A4;
  /* Primary Blue — sampled from logo faucet; buttons, links, subtitles */
  --color-red: #E30613;
  /* Accent Red — section borders, highlights */
  --color-yellow: #FBC02D;
  /* Solar Yellow — stars, solar accents */
  --color-green: #16A34A;
  /* Phone Green — call action button */
  --color-dark-900: #2a0f0f;
  /* Dark Slate — headings, footer bg */
  --color-dark-800: #1E293B;
  /* Dark Slate Light — phone banner bg */
  --color-contact: #3356A1;
  /* Contact/Header Blue — RGB(51, 86, 161) */
  --color-bg: #F8FAFC;
  /* Background Light */
  --color-card: #FFFFFF;
  /* Card Surface */
  --color-border: #E2E8F0;
  /* Subtle border for cards */
  --color-muted: #94A3B8;
  /* Footer text */

  /* Spacing scale (8px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 8px;

  /* Shadows */
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-float: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

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

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
figure,
blockquote {
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

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

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  background: transparent;
}

/* --------------------------------------------------------------------------
   3. Base Typography
   -------------------------------------------------------------------------- */
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-dark-900);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3 {
  color: var(--color-dark-900);
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: 2rem;
  margin-bottom: var(--space-4);
}

h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-2);
  border-bottom: 3px solid var(--color-red);
}

h3 {
  font-size: 1.15rem;
  margin-bottom: var(--space-3);
  color: var(--color-contact);
}

p {
  margin-bottom: var(--space-4);
}

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

strong {
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   4. Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: var(--space-10) 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   5. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  background: var(--color-card);
}

.hero-section img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  display: block;
}

/* --------------------------------------------------------------------------
   6. Contact Banner (phone strip)
   -------------------------------------------------------------------------- */
.contact-banner {
  background: var(--color-contact);
  color: #fff;
  text-align: center;
  padding: 16px 20px;
}

.contact-banner p {
  font-weight: 700;
  font-size: 1.5rem;
}

.phone-link {
  display: inline-block;
  margin-top: var(--space-2);
  padding: 10px 24px;
  background: var(--color-red);
  border-radius: 9999px;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-card);
  transition: background 0.15s ease, transform 0.15s ease;
}

.phone-link:hover,
.phone-link:focus-visible {
  text-decoration: none;
  color: #fff;
  background: #c40511;
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   7. Floating Action Buttons (fixed to viewport)
   -------------------------------------------------------------------------- */
.floating-container {
  position: fixed;
  right: max(16px, calc(env(safe-area-inset-right) + 4px));
  bottom: max(20px, calc(env(safe-area-inset-bottom) + 10px));
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-float);
  color: #fff;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.floating-btn:hover,
.floating-btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
  text-decoration: none;
}

.floating-btn svg,
.floating-btn img {
  width: 24px;
  height: 24px;
}

.mail-btn {
  background: var(--color-blue);
}

.instagram-btn {
  background: var(--color-red);
}

.phone-btn {
  background: var(--color-green);
}

/* --------------------------------------------------------------------------
   8. Cards
   -------------------------------------------------------------------------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

/* --------------------------------------------------------------------------
   9. Services
   -------------------------------------------------------------------------- */
.service-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-card h3 {
  color: var(--color-blue);
  margin: 0;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.service-list li {
  position: relative;
  padding-left: 24px;
  line-height: 1.5;
}

.service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 14px;
  height: 8px;
  border-left: 3px solid var(--color-green);
  border-bottom: 3px solid var(--color-green);
  transform: rotate(-45deg);
}

/* --------------------------------------------------------------------------
   10. Partners
   -------------------------------------------------------------------------- */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.partner-tile {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  font-weight: 700;
  color: var(--color-dark-900);
  min-width: 140px;
  text-align: center;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-card);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.partner-tile:hover {
  border-color: var(--color-blue);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   11. Reviews
   -------------------------------------------------------------------------- */
.review-carousel {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.review-carousel-viewport {
  order: 1;
  display: flex;
  flex: 1 1 100%;
  min-width: 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  -ms-overflow-style: none;
  border-radius: var(--radius-md);
}

.review-carousel-viewport::-webkit-scrollbar {
  display: none;
}

.review-carousel-viewport:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

.review-card {
  flex: 0 0 100%;
  scroll-snap-align: start;
  min-width: 0;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.review-card blockquote,
.review-card p {
  margin: 0;
  font-style: italic;
  color: var(--color-dark-900);
}

.review-card blockquote footer {
  margin-top: var(--space-3);
}

.review-card .review-author {
  font-style: normal;
  font-weight: 700;
  color: var(--color-red);
  font-size: 0.95rem;
}

.review-carousel-btn {
  order: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-card);
  color: var(--color-blue);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, opacity 0.15s ease;
}

.review-carousel-btn:hover {
  border-color: var(--color-blue);
}

.review-carousel-btn:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

.review-carousel-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.stars {
  color: var(--color-yellow);
  font-size: 1.1rem;
  letter-spacing: 2px;
  line-height: 1;
}

/* Review summary (overall rating) */
.review-summary {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  padding: var(--space-4) var(--space-5);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.review-summary-stars {
  color: var(--color-yellow);
  font-size: 1.5rem;
  letter-spacing: 2px;
  line-height: 1;
}

.review-summary-score {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-dark-900);
}

.review-summary-count {
  font-size: 0.95rem;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
body>footer {
  background: var(--color-contact);
  color: var(--color-bg);
  padding: 30px 20px 90px;
  text-align: center;
  margin-top: var(--space-12);
}

body>footer a {
  color: var(--color-bg);
  text-decoration: underline;
}

body>footer a:hover,
body>footer a:focus-visible {
  color: var(--color-red);
}

body>footer p {
  margin: 0 0 var(--space-2);
}

body>footer nav {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   13. Responsive breakpoints (mobile-first)
   -------------------------------------------------------------------------- */

/* 600px+ : two-column grids */
@media (min-width: 600px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: var(--space-12) 0;
  }

  .review-card {
    flex-basis: calc((100% - var(--space-5)) / 2);
  }
}

/* 1024px+ : four-column grids, expanded max-width */
@media (min-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .phone-link {
    font-size: 1.75rem;
  }

  .contact-banner p {
    font-size: 1.75rem;
  }

  /* Reviews: side-by-side controls, 3 cards per view */
  .review-carousel {
    flex-wrap: nowrap;
    align-items: center;
    gap: var(--space-4);
  }

  .review-carousel-viewport,
  .review-carousel-btn {
    order: 0;
  }

  .review-card {
    flex-basis: calc((100% - var(--space-5)) / 2);
  }
}