/*
 * Baumgärtner KFZ Service - Global Design System & Stylesheet
 * Handcrafted Premium Web Design (No Tailwind CSS)
 */

/* ==========================================================================
   1. Imports & Typography
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=Sora:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette (Modernized HSL variations of original brand colors) */
  --color-primary: hsl(358, 85%, 53%);      /* Original Red: #ED1C24 */
  --color-primary-dark: hsl(356, 94%, 36%); /* Darker Red: #B00511 */
  --color-accent-gold: hsl(45, 96%, 49%);    /* Yellow/Gold: #F5B705 */
  
  /* Light Theme Colors */
  --bg-light: hsl(40, 30%, 98%);            /* Warm Off-White / Cream: #FAF9F6 */
  --bg-card-light: hsl(0, 0%, 100%);
  --text-dark: hsl(230, 6%, 19%);            /* Anthracite: #2F2E33 */
  --text-muted-light: hsl(240, 2%, 50%);    /* Soft Gray: #7C7B7E */
  --border-light: hsla(230, 6%, 19%, 0.08);
  
  /* Dark Theme Colors (used for Motorsport & Footer sections) */
  --bg-dark: hsl(240, 8%, 10%);             /* Near-Black: #17171A */
  --bg-card-dark: hsl(240, 8%, 13%);
  --text-light: hsl(40, 20%, 96%);          /* Warm Light Gray */
  --text-muted-dark: hsl(240, 3%, 70%);     /* Muted Dark Gray */
  --border-dark: hsla(0, 0%, 100%, 0.08);

  /* Spacing Scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-section: clamp(5rem, 8vw, 7.5rem); /* 80px to 120px vertical padding */

  /* Layout */
  --container-max: 1200px;
  --text-content-max: 680px;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  
  /* Typography Scale */
  --font-display: 'Sora', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  
  --font-size-hero: clamp(2.5rem, 6vw, 4.5rem);
  --font-size-h2: clamp(1.8rem, 4vw, 2.8rem);
  --font-size-h3: clamp(1.3rem, 2vw, 1.8rem);
  --font-size-body: clamp(0.95rem, 1.5vw, 1.05rem);
  --font-size-small: 0.875rem;

  /* Transitions */
  --transition-smooth: 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-fast: 0.2s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: 1.6;
  background-color: var(--bg-light);
  color: var(--text-dark);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-dark);
}

h1 {
  font-size: var(--font-size-hero);
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

h2 {
  font-size: var(--font-size-h2);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--font-size-h3);
  letter-spacing: -0.01em;
}

p {
  margin-bottom: var(--space-sm);
  color: var(--text-muted-light);
}

p.lead {
  font-size: 1.15rem;
  line-height: 1.6;
  max-width: var(--text-content-max);
}

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

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

/* ==========================================================================
   3. Layout & Structure
   ========================================================================== */
.container {
  width: 90%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
}

.section {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
  position: relative;
  overflow: hidden;
}

/* Section Rhythm Variants */
.section-light {
  background-color: var(--bg-light);
  color: var(--text-dark);
}

.section-dark {
  background-color: var(--bg-dark);
  color: var(--text-light);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--text-light);
}

.section-dark p {
  color: var(--text-muted-dark);
}

/* Grids & Flex Utilities */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   4. Header & Navigation (Handcrafted Premium Navigation)
   ========================================================================== */
.site-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: transparent;
  padding: var(--space-md) 0;
  transition: var(--transition-smooth);
}

.site-header.is-sticky {
  position: fixed;
  background-color: hsla(240, 8%, 10%, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-dark);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-img {
  width: 50px;
  height: auto;
  transition: var(--transition-smooth);
}

.site-header.is-sticky .logo-img {
  width: 40px;
}

.logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--text-light);
}

/* Navigation Links */
.nav-menu {
  display: none; /* Mobile first hidden */
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.nav-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted-dark);
  padding: var(--space-xs) 0;
  position: relative;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text-light);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-light);
  margin: 5px 0;
  transition: var(--transition-smooth);
}

.menu-toggle.is-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-dark);
  z-index: 95;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.mobile-nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-overlay .nav-list {
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
}

.mobile-nav-overlay .nav-link {
  font-size: 1.5rem;
}

@media (min-width: 992px) {
  .nav-menu {
    display: block;
  }
  .menu-toggle {
    display: none;
  }
}

/* ==========================================================================
   5. Hero Section (Concept Thread: Handcrafted, Motorsport-Tension)
   ========================================================================== */
.hero-section {
  min-height: 90vh;
  background-color: var(--bg-dark);
  background-image: linear-gradient(180deg, rgba(23, 23, 26, 0.4) 0%, rgba(23, 23, 26, 0.95) 100%), 
                    url('../images/_dsc0422-crop-u681171.jpg');
  background-size: cover;
  background-position: center;
  color: var(--text-light);
  display: flex;
  align-items: center;
  padding-top: 120px;
  position: relative;
}

.hero-content {
  max-width: 800px;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  display: inline-block;
}

.hero-headline {
  margin-bottom: var(--space-md);
}

.hero-headline span {
  display: block;
  font-size: 0.55em;
  font-family: var(--font-body);
  font-weight: 300;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-muted-dark);
  margin-top: var(--space-xs);
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted-dark);
  margin-bottom: var(--space-lg);
  max-width: 600px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Trust Strip */
.trust-strip {
  background-color: var(--bg-card-dark);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
  padding: var(--space-md) 0;
  color: var(--text-muted-dark);
}

.trust-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.trust-item svg {
  color: var(--color-accent-gold);
  width: 24px;
  height: 24px;
}

.trust-text {
  font-size: var(--font-size-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (min-width: 768px) {
  .trust-container {
    flex-direction: row;
  }
}

/* ==========================================================================
   6. Custom Buttons & Interactivity
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 16px 32px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  border: 2px solid var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-light);
  border: 2px solid var(--border-dark);
}

.btn-secondary:hover {
  background-color: var(--bg-card-dark);
  border-color: var(--text-light);
  transform: translateY(-2px);
}

.btn-secondary-light {
  color: var(--text-dark);
  border: 2px solid var(--border-light);
}

.btn-secondary-light:hover {
  background-color: var(--bg-card-light);
  border-color: var(--text-dark);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--color-accent-gold);
  color: var(--bg-dark);
  border: 2px solid var(--color-accent-gold);
}

.btn-accent:hover {
  background-color: hsl(45, 96%, 42%);
  border-color: hsl(45, 96%, 42%);
  transform: translateY(-2px);
}

/* ==========================================================================
   7. Cards & Modules (Concept Thread: Precision Frames, Handcrafted Shadows)
   ========================================================================== */
.card {
  background-color: var(--bg-card-light);
  border: 1px solid var(--border-light);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  transition: var(--transition-smooth);
  position: relative;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px hsla(230, 6%, 19%, 0.05);
  border-color: hsla(358, 85%, 53%, 0.3);
}

.card-dark {
  background-color: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
}

.card-dark:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
  border-color: hsla(45, 96%, 49%, 0.3);
}

.card-icon {
  margin-bottom: var(--space-md);
  color: var(--color-primary);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: hsla(358, 85%, 53%, 0.05);
  border-radius: var(--border-radius-sm);
}

.card-dark .card-icon {
  color: var(--color-accent-gold);
  background-color: hsla(45, 96%, 49%, 0.05);
}

.card-title {
  font-size: var(--font-size-h3);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

.card-link {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.card-dark .card-link {
  color: var(--color-accent-gold);
}

.card-link svg {
  transition: transform var(--transition-fast);
}

.card-link:hover svg {
  transform: translateX(4px);
}

/* ==========================================================================
   8. Highlights & Callouts (Handcrafted Dividers & Elements)
   ========================================================================== */
.section-header {
  max-width: var(--text-content-max);
  margin-bottom: var(--space-xl);
}

.section-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
  display: block;
}

.section-dark .section-label {
  color: var(--color-accent-gold);
}

/* Decorative Divider */
.decor-line {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.decor-line::before,
.decor-line::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--border-light);
}

.section-dark .decor-line::before,
.section-dark .decor-line::after {
  background-color: var(--border-dark);
}

.decor-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  transform: rotate(45deg);
}

.section-dark .decor-dot {
  background-color: var(--color-accent-gold);
}

/* ==========================================================================
   9. Forms (Conversion-Oriented Premium Forms)
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dark);
  margin-bottom: var(--space-xs);
}

.section-dark .form-label {
  color: var(--text-light);
}

.form-control {
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 14px 18px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-light);
  background-color: var(--bg-light);
  color: var(--text-dark);
  transition: var(--transition-fast);
}

.section-dark .form-control {
  border-color: var(--border-dark);
  background-color: var(--bg-card-dark);
  color: var(--text-light);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: none;
}

.section-dark .form-control:focus {
  border-color: var(--color-accent-gold);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ==========================================================================
   10. Footer Section
   ========================================================================== */
.site-footer {
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-top: 2px solid var(--border-dark);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-grid {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-logo-img {
  width: 60px;
}

.footer-logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.footer-desc {
  color: var(--text-muted-dark);
  max-width: 320px;
}

.footer-title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
  color: var(--color-accent-gold);
}

.footer-links {
  list-style: none;
}

.footer-link-item {
  margin-bottom: var(--space-xs);
}

.footer-link {
  color: var(--text-muted-dark);
  font-size: 0.95rem;
}

.footer-link:hover {
  color: var(--text-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--border-dark);
  padding-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.footer-copy {
  font-size: var(--font-size-small);
  color: var(--text-muted-dark);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-bottom-link {
  font-size: var(--font-size-small);
  color: var(--text-muted-dark);
}

.footer-bottom-link:hover {
  color: var(--text-light);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* ==========================================================================
   11. Motion, Reveal & Micro-Animations
   ========================================================================== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.8, 0.25, 1),
              transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.scroll-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered Delay Utilities */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Partner Marquee/Scroll Animation */
.marquee-wrapper {
  overflow: hidden;
  white-space: nowrap;
  padding: var(--space-md) 0;
  position: relative;
  background-color: var(--bg-card-dark);
  border-top: 1px solid var(--border-dark);
  border-bottom: 1px solid var(--border-dark);
}

.marquee-content {
  display: inline-block;
  animation: marquee 30s linear infinite;
}

.marquee-item {
  display: inline-block;
  margin-right: 4rem;
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 1.1rem;
  color: var(--text-muted-dark);
  letter-spacing: 0.05em;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Partner Logo SVG Strip */
.partner-logo-strip {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xl);
  opacity: 0.6;
}

.partner-logo-strip img {
  max-height: 40px;
  filter: grayscale(1) brightness(0) invert(1); /* Matches dark footer layout */
}