/* ========================================
   Modern CSS for Jakobi Innenausbau
   Features: Dark Mode, Fluid Typography, 8K Support, WCAG AA/AAA
   ======================================== */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
  /* Light Mode Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f5;
  --color-bg-tertiary: #e8e8e8;
  --color-text-primary: #2a2a2a;
  --color-text-secondary: #4a4a4a;
  --color-text-tertiary: #6a6a6a;
  --color-accent: #c1121f;
  --color-accent-hover: #8f0d16;
  --color-accent-soft: #ffe5e7;
  --color-border: #d0d0d0;
  --color-shadow: rgba(0, 0, 0, 0.1);
  --color-shadow-strong: rgba(0, 0, 0, 0.2);

  /* Typography - Fluid Responsive Sizes */
  --font-family-primary: 'Titillium Web', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-base: clamp(16px, 0.8vw + 0.5rem, 20px);
  --font-size-h1: clamp(2rem, 3vw + 1rem, 4rem);
  --font-size-h2: clamp(1.5rem, 2.5vw + 0.5rem, 3rem);
  --font-size-h3: clamp(1.25rem, 2vw + 0.3rem, 2.25rem);
  --font-size-h4: clamp(1.125rem, 1.5vw + 0.2rem, 1.75rem);
  --font-size-small: clamp(0.875rem, 0.7vw + 0.4rem, 1rem);

  /* Spacing Scale */
  --space-xs: clamp(0.5rem, 1vw, 1rem);
  --space-sm: clamp(1rem, 1.5vw, 1.5rem);
  --space-md: clamp(1.5rem, 2vw, 2.5rem);
  --space-lg: clamp(2rem, 3vw, 4rem);
  --space-xl: clamp(3rem, 5vw, 6rem);

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: clamp(1rem, 3vw, 3rem);
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-medium: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;

  /* Z-index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  /* Signal Color for "Eye Catchers" and Active States */
  --color-signal: #c1121f;
  --color-signal-hover: #8f0d16;
}

/* Dark Mode Theme */
[data-theme="dark"] {
  --color-bg-primary: #1a1a1a;
  --color-bg-secondary: #2a2a2a;
  --color-bg-tertiary: #3a3a3a;
  --color-text-primary: #f5f5f5;
  --color-text-secondary: #d4d4d4;
  --color-text-tertiary: #b4b4b4;
  --color-accent: #ff5252;
  --color-accent-hover: #ff8a80;
  --color-accent-soft: #3a2020;
  --color-border: #4a4a4a;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-strong: rgba(0, 0, 0, 0.5);
  --color-signal: #ff5252;
  /* Brighter Red for Dark Mode */
  --color-signal-hover: #ff8a80;
}

/* ... (rest of CSS Reset) ... */

/* ... */

/* CTA Headers with Signal Color */
.cta-section h2 {
  margin-top: 0;
  color: var(--color-signal);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Navigation Active State */
.topnav a.active {
  background-color: var(--color-signal);
  font-weight: 700;
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.2);
}

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

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

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-medium), color var(--transition-medium);
  overflow-x: hidden;
}

/* ========================================
   Typography
   ======================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

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

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

a:hover,
a:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

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

strong,
b {
  font-weight: 600;
}

small {
  font-size: var(--font-size-small);
}

/* ========================================
   Layout Components
   ======================================== */
#wrapper {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--container-padding);
  background-color: var(--color-bg-secondary);
  box-shadow: 0 0 20px var(--color-shadow-strong);
  transition: background-color var(--transition-medium), box-shadow var(--transition-medium);
}

header {
  text-align: center;
  padding: var(--space-lg) 0;
}

header img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Dark mode logo switcher */
header .logo-light {
  display: block;
}

header .logo-dark {
  display: none;
}

[data-theme="dark"] header .logo-light {
  display: none;
}

[data-theme="dark"] header .logo-dark {
  display: block;
}

/* ========================================
   CTA & Buttons - "Eye Catcher"
   ======================================== */
.cta-section {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
  border-radius: var(--border-radius-lg);
  text-align: center;
  box-shadow: 0 10px 30px var(--color-shadow);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.cta-section:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px var(--color-shadow-strong);
}

.cta-section h2 {
  margin-top: 0;
  color: var(--color-signal);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 50px;
  /* Pill shape */
  text-decoration: none;
  box-shadow: 0 4px 15px var(--color-shadow-strong);
  transition: all var(--transition-medium);
  border: 2px solid transparent;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-bg-primary);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px var(--color-shadow-strong);
  text-decoration: none;
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-primary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
}


/* ========================================
   Navigation
   ======================================== */
.topnav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2px;
  background-color: var(--color-accent);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-lg);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.topnav a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  color: var(--color-bg-primary);
  background-color: var(--color-text-secondary);
  transition: background-color var(--transition-fast);
  font-weight: 500;
  text-decoration: none;
}

.topnav a:hover,
.topnav a:focus {
  background-color: var(--color-accent-hover);
  text-decoration: none;
}

.topnav a.active {
  background-color: var(--color-signal);
  font-weight: 700;
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.2);
}

.topnav .icon {
  display: none;
}

/* Mobile Navigation */
@media screen and (max-width: 768px) {
  .topnav {
    grid-template-columns: 1fr;
  }

  .topnav a:not(:first-child) {
    display: none;
  }

  .topnav a.icon {
    display: block;
    text-align: right;
  }

  .topnav.responsive {
    display: flex;
    flex-direction: column;
  }

  .topnav.responsive a {
    display: block;
  }

  .topnav.responsive a.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
}

/* ========================================
   Content Sections
   ======================================== */
.content {
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
}

section {
  margin-bottom: var(--space-xl);
}

/* Lists */
ul,
ol {
  margin-left: var(--space-md);
  margin-bottom: var(--space-sm);
}

li {
  margin-bottom: 0.5rem;
}

.innenabstandtbl {
  list-style-type: disc;
  padding-left: var(--space-md);
}

/* ========================================
   Images
   ======================================== */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.alignleft {
  float: left;
  margin: var(--space-sm) var(--space-md) var(--space-sm) 0;
  border-radius: var(--border-radius-md);
  box-shadow: 0 2px 10px var(--color-shadow);
}

/* ========================================
   Footer
   ======================================== */
footer {
  padding: var(--space-lg) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

footer p {
  margin: var(--space-xs) 0;
  font-size: var(--font-size-small);
}

.subnavi {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.subnavi a,
.subnavi span {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

.subnavi a:hover {
  background-color: var(--color-bg-tertiary);
  text-decoration: none;
}

.subnavi span {
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
  font-weight: 500;
}

/* ========================================
   Skip Links (Accessibility)
   ======================================== */
.skiplinks {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: var(--z-tooltip);
}

.skiplinks:focus {
  position: fixed;
  top: 0;
  left: 0;
  width: auto;
  height: auto;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
  border-radius: 0 0 var(--border-radius-sm) 0;
  box-shadow: 0 2px 10px var(--color-shadow-strong);
}

/* ========================================
   Dark Mode Toggle Button
   ======================================== */
.theme-toggle {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 2px 10px var(--color-shadow-strong);
  transition: all var(--transition-fast);
  z-index: var(--z-fixed);
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 15px var(--color-shadow-strong);
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--color-accent-hover);
  outline-offset: 3px;
}

.theme-toggle[aria-pressed="true"] .icon-sun {
  display: none;
}

.theme-toggle[aria-pressed="false"] .icon-moon {
  display: none;
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-md);
  left: var(--space-md);
  /* Changed from right to left to avoid chatbot collision */
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  background-color: var(--color-accent);
  color: var(--color-bg-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 2px 10px var(--color-shadow-strong);
  transition: all var(--transition-fast);
  z-index: var(--z-fixed);
  opacity: 0;
  visibility: hidden;
  transform: translateY(100px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 15px var(--color-shadow-strong);
}

.back-to-top:focus-visible {
  outline: 3px solid var(--color-accent-hover);
  outline-offset: 3px;
}

/* ========================================
   Responsive Utilities
   ======================================== */
.clearing {
  clear: both;
}

.noborder1,
.noborder2,
.noborder3 {
  border: none;
}

/* ========================================
   Responsive Breakpoints
   ======================================== */

/* Tablet */
@media screen and (max-width: 1024px) {
  :root {
    --container-padding: clamp(1rem, 2vw, 2rem);
  }
}

/* Mobile */
@media screen and (max-width: 768px) {
  :root {
    --space-lg: clamp(1.5rem, 2vw, 2.5rem);
    --space-xl: clamp(2rem, 3vw, 4rem);
  }

  .alignleft {
    float: none;
    margin: var(--space-sm) auto;
  }

  .theme-toggle {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
    top: var(--space-xs);
    right: calc(var(--space-md) + 50px);
  }
}

/* 8K and Ultra-Wide Displays */
@media screen and (min-width: 3840px) {
  :root {
    --container-max-width: 2400px;
    --font-size-base: clamp(18px, 0.5vw + 0.75rem, 24px);
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {

  .theme-toggle,
  .topnav,
  .skiplinks {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}

/* ========================================
   Reduced Motion (Accessibility)
   ======================================== */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========================================
   High Contrast Mode Support
   ======================================== */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
  }

  [data-theme="dark"] {
    --color-border: #ffffff;
  }

  a:focus-visible {
    outline-width: 3px;
  }
}

/* ========================================
   SEO Landing Page Components
   ======================================== */

/* Section Kicker – red accent label */
.section-kicker {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-accent-soft);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  font-size: var(--font-size-small);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Lead Text */
.lead {
  font-size: clamp(1.1rem, 1.2vw + 0.5rem, 1.35rem);
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* Content Grid – responsive 2-col / 3-col */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
}

/* Card */
.card {
  padding: var(--space-md);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--color-shadow);
}

.card img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-sm);
}

/* Service List – clean styled list */
.service-list {
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

.service-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.65rem;
}

.service-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* CTA Button (new) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  background-color: var(--color-accent);
  color: #ffffff;
  font-weight: 700;
  font-size: var(--font-size-base);
  text-decoration: none;
  border-radius: 50px;
  border: 2px solid var(--color-accent);
  cursor: pointer;
  transition: all var(--transition-medium);
  box-shadow: 0 3px 10px var(--color-shadow);
}

.btn:hover,
.btn:focus {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-shadow-strong);
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

/* Headline helper */
.headline {
  text-align: center;
  color: var(--color-text-secondary);
  font-weight: 400;
  margin-bottom: var(--space-md);
}