/* ==========================================================================
   IT Ahrtal Service - Premium Enterprise Styles (Final Version 3.0)
   Polished, consistent, and intentional design system
   ========================================================================== */

/* ==========================================================================
   CSS Custom Properties - Design Tokens
   ========================================================================== */

:root {
  /* Primary Colors */
  --primary: #e10600;
  --primary-hover: #c10500;
  --primary-light: rgba(225, 6, 0, 0.08);
  --primary-foreground: #ffffff;

  /* Neutral Colors */
  --background: #ffffff;
  --foreground: #0a0a0a;
  --secondary: #f7f7f7;
  --secondary-hover: #efefef;

  /* Text Colors - Refined for readability */
  --text-primary: #0a0a0a;
  --text-secondary: #4a4a4a;
  --text-muted: #6b6b6b;
  --text-light: #8a8a8a;

  /* Border Colors */
  --border: #e8e8e8;
  --border-hover: #d0d0d0;

  /* Dark Theme (Footer) */
  --dark: #0a0a0a;
  --dark-secondary: #141414;
  --dark-border: #252525;
  --dark-text: #b0b0b0;
  --dark-text-muted: #707070;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* 8px Grid Spacing System */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-16: 128px;

  /* Layout */
  --container-max: 1280px;
  --container-padding: 32px;
  --header-height: 80px;
  --content-max-width: 680px;

  /* Typography Scale */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-base: 16px;
  --text-lg: 18px;
  --text-xl: 20px;
  --text-2xl: 24px;
  --text-3xl: 32px;
  --text-4xl: 40px;
  --text-5xl: 48px;

  /* Line Heights */
  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);

  /* Focus */
  --focus-ring: 0 0 0 3px rgba(225, 6, 0, 0.25);
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
  :root {
    --container-padding: 24px;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 20px;
    --header-height: 64px;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 16px;
  }
}

/* ==========================================================================
   CSS Reset & Base
   ========================================================================== */

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  pointer-events: auto;
}

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
}

/* ==========================================================================
   Layout Utilities
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-2);
  z-index: 1000;
  padding: var(--space-2) var(--space-3);
  background: var(--primary);
  color: var(--primary-foreground);
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-sm);
}

.skip-link:focus {
  top: var(--space-2);
}

/* ==========================================================================
   Typography - Refined Hierarchy
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  text-wrap: balance;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
}

h2 {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(var(--text-xl), 2.5vw, var(--text-2xl));
  letter-spacing: -0.01em;
}

h4 {
  font-size: clamp(var(--text-lg), 2vw, var(--text-xl));
  letter-spacing: 0;
}

p {
  text-wrap: pretty;
  max-width: 65ch;
}

.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

.eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  display: block;
  margin-bottom: var(--space-2);
}

.lead-text {
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  max-width: 600px;
}

/* ==========================================================================
   Buttons - Consistent & Accessible
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px var(--space-4);
  min-height: 48px;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--text-primary);
  color: var(--background);
}

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

.btn-white:hover {
  background-color: var(--secondary);
  border-color: var(--secondary);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--background);
  border-color: var(--background);
}

.btn-outline-white:hover {
  background-color: var(--background);
  color: var(--primary);
}

@media (max-width: 640px) {
  .btn {
    padding: 12px var(--space-3);
    font-size: 13px;
  }
}

@media (max-width: 360px) {
  .btn {
    padding: 12px 20px;
    font-size: var(--text-xs);
    min-height: 44px;
  }
}

/* ==========================================================================
   Header - Fixed Navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--background);
  height: var(--header-height);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-4);
}

.header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header__logo-img {
  height: 72px;
  width: auto;
  max-width: 280px;
  object-fit: contain;
}

.header__logo:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}

.header__nav-link {
  font-size: 13px;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  padding: var(--space-1) 0;
  position: relative;
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-fast);
}

.header__nav-link:hover::after,
.header__nav-link.active::after {
  width: 100%;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--primary);
}

.header__nav-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.header__cta {
  padding: 10px var(--space-3);
  min-height: 40px;
  font-size: var(--text-xs);
}

.header__mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
  color: var(--text-primary);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.header__mobile-toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.header__mobile-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background-color: var(--background);
  z-index: 99;
  padding: var(--space-8) var(--space-4);
  overflow-y: auto;
}

.mobile-menu[aria-hidden="false"] {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.mobile-menu__link {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-2);
}

.mobile-menu__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.mobile-menu__link:hover,
.mobile-menu__link.active {
  color: var(--primary);
}

@media (max-width: 1024px) {
  .header__nav,
  .header__cta {
    display: none;
  }

  .header__mobile-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .header__logo-img {
    height: 56px;
    max-width: 220px;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  position: relative;
  min-height: calc(90vh - var(--header-height));
  margin-top: var(--header-height);
  display: flex;
  align-items: center;
}

.hero__background {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__content {
  width: 100%;
  padding: var(--space-10) 0;
}

.hero__panel {
  background-color: var(--background);
  padding: var(--space-6);
  max-width: 640px;
  margin-left: var(--space-10);
  box-shadow: var(--shadow-lg);
}

.hero__title {
  margin-bottom: var(--space-3);
}

.hero__text {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
  max-width: 540px;
}

.hero__buttons {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

@media (max-width: 1280px) {
  .hero__panel {
    margin-left: var(--space-6);
    max-width: 580px;
  }
}

@media (max-width: 1024px) {
  .hero {
    min-height: auto;
  }

  .hero__panel {
    margin-left: var(--space-4);
    max-width: 520px;
    padding: var(--space-5);
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: 560px;
    align-items: flex-end;
  }

  .hero__content {
    padding: var(--space-4) 0;
  }

  .hero__panel {
    margin: 0;
    max-width: none;
    padding: var(--space-4);
  }

  .hero__buttons {
    flex-direction: column;
  }

  .hero__buttons .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 520px;
  }

  .hero__panel {
    padding: var(--space-3);
  }

  .hero__text {
    font-size: 15px;
  }
}

@media (max-width: 360px) {
  .hero {
    min-height: 480px;
  }

  .hero__title {
    font-size: 28px;
  }

  .hero__text {
    font-size: var(--text-sm);
  }
}

/* ==========================================================================
   Sections - Consistent Spacing
   ========================================================================== */

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

.section--lg {
  padding: var(--space-16) 0;
}

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

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

.section--primary {
  background-color: var(--primary);
  color: var(--primary-foreground);
}

.section__header {
  margin-bottom: var(--space-6);
}

.section__header--center {
  text-align: center;
}

.section__title {
  margin-bottom: var(--space-2);
}

.section__subtitle {
  color: var(--text-secondary);
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  max-width: 600px;
  line-height: var(--leading-relaxed);
}

.section__header--center .section__subtitle {
  margin: 0 auto;
}

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

@media (max-width: 1024px) {
  .section {
    padding: var(--space-8) 0;
  }

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

@media (max-width: 768px) {
  .section--lg {
    padding: var(--space-10) 0;
  }

  .section__header {
    margin-bottom: var(--space-5);
  }
}

/* ==========================================================================
   Topics/Services Carousel
   ========================================================================== */

.topics-section {
  position: relative;
}

.topics-carousel {
  position: relative;
  overflow: hidden;
}

.topics-carousel__wrapper {
  display: flex;
  transition: transform var(--transition-slow);
}

.topics-carousel__slide {
  min-width: 100%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.topic-card {
  background-color: var(--secondary);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
  min-height: 200px;
}

.topic-card:hover {
  border-left-color: var(--primary);
  background-color: var(--secondary-hover);
}

.topic-card:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.topic-card__icon {
  font-size: 28px;
  width: 36px;
  height: 36px;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.topic-card__title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

.topic-card__text {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  flex: 1;
  line-height: var(--leading-normal);
}

.topic-card__arrow {
  color: var(--primary);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  margin-top: auto;
  transition: transform var(--transition-fast);
}

.topic-card:hover .topic-card__arrow {
  transform: translateX(4px);
}

/* Carousel Navigation */
.topics-carousel__nav {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.topics-carousel__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  padding: 0;
}

.topics-carousel__dot:hover {
  background-color: var(--text-muted);
}

.topics-carousel__dot.active {
  background-color: var(--primary);
}

.topics-carousel__arrows {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.topics-carousel__arrow {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--background);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-primary);
}

.topics-carousel__arrow:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--background);
}

.topics-carousel__arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.topics-carousel__arrow:disabled:hover {
  background-color: var(--background);
  border-color: var(--border);
  color: var(--text-primary);
}

@media (max-width: 1024px) {
  .topics-carousel__slide,
  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .topics-carousel__slide,
  .topics-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .topic-card {
    min-height: auto;
    padding: var(--space-3);
  }
}

/* ==========================================================================
   Services Alternating Layout
   ========================================================================== */

.service-row {
  display: flex;
  position: relative;
}

.service-row::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--primary);
  transition: width var(--transition-slow);
  z-index: 1;
}

.service-row:hover::before {
  width: 100%;
}

.service-row--reverse {
  flex-direction: row-reverse;
}

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

.service-row__image img {
  width: 80%;
  height: auto; /* wichtig, sonst wird’s verzerrt */
  object-fit: cover;
  aspect-ratio: 4 / 3;
  transition: transform var(--transition-slow);
}

.service-row:hover .service-row__image img {
  transform: scale(1.02);
}

.service-row__content {
  width: 50%;
  display: flex;
  align-items: center;
  padding: var(--space-10);
  background-color: var(--background);
}

.service-row:nth-child(odd) .service-row__content {
  background-color: var(--secondary);
}

.service-row__inner {
  max-width: 480px;
}

.service-row__title {
  margin-bottom: var(--space-2);
}

.service-row__text {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

.service-row__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
  padding: var(--space-1) 0;
}

.service-row__link:hover {
  color: var(--primary-hover);
}

.service-row__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

@media (max-width: 1024px) {
  .service-row,
  .service-row--reverse {
    flex-direction: column;
  }

  .service-row__image,
  .service-row__content {
    width: 100%;
  }

  .service-row__image img {
    aspect-ratio: 16/9;
  }

  .service-row__content {
    padding: var(--space-6) var(--space-4);
  }

  .service-row__inner {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .service-row__content {
    padding: var(--space-5) var(--container-padding);
  }
}

/* ==========================================================================
   Stats Section
   ========================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.stat-item {
  text-align: center;
}

.stat-item__icon {
  width: 40px;
  height: 40px;
  margin: 0 auto var(--space-3);
  color: var(--background);
  opacity: 0.5;
}

.stat-item__value {
  font-size: clamp(var(--text-4xl), 5vw, var(--text-5xl));
  font-weight: var(--font-weight-bold);
  color: var(--primary);
  margin-bottom: var(--space-1);
  line-height: 1;
}

.stat-item__label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dark-text);
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* ==========================================================================
   References Section
   ========================================================================== */

.reference-featured {
  margin-bottom: var(--space-4);
}

.reference-card {
  display: block;
  position: relative;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.reference-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--primary);
  transition: width var(--transition-base);
}

.reference-card:hover::after {
  width: 100%;
}

.reference-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.reference-card:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.reference-card__image {
  position: relative;
  overflow: hidden;
}

.reference-card__image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background-color: #f5f5f5; /* optional */
}

.reference-card:hover .reference-card__image img {
  transform: scale(1.02);
}

.reference-card--small .reference-card__image img {
  aspect-ratio: 16/9;
}

.reference-card__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.reference-card:hover .reference-card__overlay,
.reference-card:focus-visible .reference-card__overlay {
  background-color: rgba(0, 0, 0, 0.6);
}

.reference-card__overlay-text {
  color: var(--background);
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.reference-card:hover .reference-card__overlay-text,
.reference-card:focus-visible .reference-card__overlay-text {
  opacity: 1;
}

.reference-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: var(--background);
  flex-wrap: wrap;
}

.reference-card__client {
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.references-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

@media (max-width: 1024px) {
  .references-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .references-grid {
    grid-template-columns: 1fr;
  }

  .reference-card__image img {
    aspect-ratio: 16/9;
  }

  .reference-card__meta {
    font-size: 13px;
  }
}

/* ==========================================================================
   Clients Section
   ========================================================================== */

.clients-section {
  background-color: var(--secondary);
}

.clients-section .section__header {
  margin-bottom: var(--space-6);
}

.clients-section .section__title {
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  text-align: center;
}

.clients-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

.client-item {
  padding: var(--space-2) var(--space-4);
  background-color: var(--background);
  border: 1px solid var(--border);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.client-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
  .clients-grid {
    gap: var(--space-2);
  }

  .client-item {
    padding: 10px var(--space-3);
    font-size: 13px;
  }
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
  text-align: center;
  background: linear-gradient(180deg, var(--secondary) 0%, var(--background) 100%) !important;
  border-top: 3px solid var(--primary);
  position: relative;
}

.cta-section h2 {
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.cta-section p {
  color: var(--text-secondary);
  font-size: clamp(var(--text-base), 2vw, var(--text-lg));
  margin-bottom: var(--space-6);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--leading-relaxed);
}

.cta-section__buttons {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-section__buttons .btn-white {
  background-color: var(--primary);
  color: var(--background);
  border-color: var(--primary);
}

.cta-section__buttons .btn-white:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
}

.cta-section__buttons .btn-outline-white {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.cta-section__buttons .btn-outline-white:hover {
  background-color: var(--text-primary);
  color: var(--background);
}

@media (max-width: 640px) {
  .cta-section__buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-section__buttons .btn {
    width: 100%;
    max-width: 320px;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--dark);
  color: var(--background);
  padding: var(--space-12) 0 0;
}

.footer__top {
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--dark-border);
}

.footer__brand {
  margin-bottom: var(--space-8);
}

.footer__logo {
  margin-bottom: var(--space-2);
}

.footer__logo-img {
  height: 72px;
  width: auto;
  max-width: 240px;
  object-fit: contain;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--dark-text-muted);
  font-weight: var(--font-weight-normal);
  margin: 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

.footer__col {
  display: flex;
  flex-direction: column;
}

.footer__col-title {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  color: var(--background);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer__link {
  color: var(--dark-text);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-normal);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all var(--transition-fast);
  padding: 2px 0;
}

.footer__link i {
  font-size: 10px;
  color: var(--primary);
  transition: transform var(--transition-fast);
}

.footer__link:hover {
  color: var(--background);
  padding-left: 4px;
}

.footer__link:hover i {
  transform: translateX(2px);
}

.footer__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.footer__contact {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--dark-text);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.footer__contact-item i {
  font-size: var(--text-sm);
  color: var(--primary);
  width: 16px;
  flex-shrink: 0;
  margin-top: 3px;
}

.footer__contact-item a {
  color: var(--dark-text);
  transition: color var(--transition-fast);
}

.footer__contact-item a:hover {
  color: var(--background);
}

.footer__hours {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer__hours li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--text-sm);
  color: var(--dark-text);
}

.footer__hours i {
  font-size: var(--text-sm);
  color: var(--dark-text-muted);
  width: 16px;
  flex-shrink: 0;
}

.footer__hours-highlight {
  color: var(--primary) !important;
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-1);
  padding-top: var(--space-2);
  border-top: 1px solid var(--dark-border);
}

.footer__hours-highlight i {
  color: var(--primary) !important;
}

.footer__bottom {
  padding: var(--space-5) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer__bottom-left {
  flex: 1;
}

.footer__copyright {
  color: var(--dark-text-muted);
  font-size: 13px;
  margin: 0;
}

.footer__legal {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__legal a {
  color: var(--dark-text-muted);
  font-size: 13px;
  font-weight: var(--font-weight-normal);
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: var(--background);
}

.footer__legal a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.footer__legal-separator {
  color: var(--dark-border);
  font-size: 13px;
}

@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@media (max-width: 768px) {
  .footer {
    padding: var(--space-10) 0 0;
  }

  .footer__brand {
    margin-bottom: var(--space-6);
  }

  .footer__logo-img {
    height: 60px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
    padding: var(--space-4) 0;
  }

  .footer__legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ==========================================================================
   Page Hero (Subpages)
   ========================================================================== */

.page-hero {
  padding-top: calc(var(--header-height) + var(--space-12));
  padding-bottom: var(--space-12);
  background-color: var(--secondary);
}

.page-hero h1 {
  max-width: 800px;
  margin-bottom: var(--space-3);
}

.page-hero .lead-text {
  max-width: 600px;
}

@media (max-width: 768px) {
  .page-hero {
    padding-top: calc(var(--header-height) + var(--space-8));
    padding-bottom: var(--space-8);
  }
}

/* ==========================================================================
   Services Page
   ========================================================================== */

.services-nav {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-2);
}

.services-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-4);
  background-color: var(--secondary);
  text-align: center;
  transition: all var(--transition-fast);
  min-height: 100px;
}

.services-nav__item:hover {
  background-color: var(--secondary-hover);
}

.services-nav__item:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.services-nav__item svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
  margin-bottom: var(--space-2);
}

.services-nav__item span {
  font-size: 13px;
  font-weight: var(--font-weight-semibold);
}

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

@media (max-width: 640px) {
  .services-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-1);
  }

  .services-nav__item {
    padding: var(--space-3);
    min-height: 88px;
  }

  .services-nav__item svg {
    width: 24px;
    height: 24px;
  }

  .services-nav__item span {
    font-size: 11px;
  }
}

/* Service Detail */
.service-detail {
  display: flex;
  gap: var(--space-10);
  align-items: center;
}

.service-detail--reverse {
  flex-direction: row-reverse;
}

.service-detail__image {
  width: 50%;
}

.service-detail__image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.service-detail__content {
  width: 50%;
}

.service-detail__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.service-detail__header svg {
  width: 40px;
  height: 40px;
  color: var(--primary);
  flex-shrink: 0;
}

.service-detail__subtitle {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
}

.service-detail__text {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.service-detail__features {
  margin-bottom: var(--space-4);
}

.service-detail__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

.service-detail__features li::before {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  flex-shrink: 0;
  margin-top: 7px;
}

@media (max-width: 1024px) {
  .service-detail,
  .service-detail--reverse {
    flex-direction: column;
    gap: var(--space-6);
  }

  .service-detail__image,
  .service-detail__content {
    width: 100%;
  }
}

/* ==========================================================================
   About Page
   ========================================================================== */

.about-row {
  display: flex;
  gap: var(--space-10);
  align-items: center;
}

.about-row--reverse {
  flex-direction: row-reverse;
}

.about-row__image {
  width: 70%;
}

.about-row__image img {
  width: 100%;
  object-fit: cover;
}

.about-row__content {
  width: 50%;
}

.about-row__text {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.about-row__text p {
  margin-bottom: var(--space-3);
}

.about-row__text p:last-child {
  margin-bottom: 0;
}

@media (max-width: 1024px) {
  .about-row,
  .about-row--reverse {
    flex-direction: column;
    gap: var(--space-6);
  }

  .about-row__image,
  .about-row__content {
    width: 100%;
  }
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.value-card {
  background-color: var(--background);
  padding: var(--space-5);
}

.value-card__icon {
  width: 40px;
  height: 40px;
  color: var(--primary);
  margin-bottom: var(--space-3);
}

.value-card__title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-2);
}

.value-card__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

@media (max-width: 1024px) {
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .values-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

/* Timeline */
.timeline {
  max-width: 800px;
  margin: 0 auto;
}

.timeline__item {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.timeline__year {
  width: 80px;
  flex-shrink: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary);
}

.timeline__content {
  flex: 1;
  padding-bottom: var(--space-5);
  padding-left: var(--space-4);
  border-left: 2px solid var(--border);
  position: relative;
}

.timeline__content::before {
  content: '';
  position: absolute;
  left: -9px;
  top: 4px;
  width: 16px;
  height: 16px;
  background-color: var(--primary);
}

.timeline__item:last-child .timeline__content {
  border-left-color: transparent;
}

.timeline__content h3 {
  margin-bottom: var(--space-1);
}

.timeline__content p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

@media (max-width: 640px) {
  .timeline__item {
    flex-direction: column;
    gap: var(--space-1);
  }

  .timeline__year {
    width: auto;
  }

  .timeline__content {
    padding-left: var(--space-3);
  }
}

/* ==========================================================================
   References Page
   ========================================================================== */

.case-featured {
  display: flex;
  gap: var(--space-10);
}

.case-featured__image {
  width: 60%;
}

.case-featured__image img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.case-featured__content {
  width: 40%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-featured__meta {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.case-featured__client {
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.case-featured__text {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.case-featured__results {
  margin-top: var(--space-4);
}

.case-featured__results-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
}

.case-featured__results li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.case-featured__results li::before {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  flex-shrink: 0;
  margin-top: 6px;
}

@media (max-width: 1024px) {
  .case-featured {
    flex-direction: column;
    gap: var(--space-6);
  }

  .case-featured__image,
  .case-featured__content {
    width: 100%;
  }
}

/* Cases Grid */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.case-card {
  background-color: var(--background);
  transition: box-shadow var(--transition-fast);
}

.case-card:hover {
  box-shadow: var(--shadow-md);
}

.case-card__image img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.case-card__content {
  padding: var(--space-4);
}

.case-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.case-card__client {
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.case-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-2);
}

.case-card__text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

.case-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.case-card__tag {
  font-size: var(--text-xs);
  background-color: var(--secondary);
  padding: 6px 12px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .cases-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Contact Page
   ========================================================================== */

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.contact-info-item {
  display: flex;
  gap: var(--space-3);
}

.contact-info-item__icon {
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-item__icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary-foreground);
}

.contact-info-item__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: 4px;
}

.contact-info-item__text {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-normal);
}

@media (max-width: 1024px) {
  .contact-info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .contact-info-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

/* Contact Form Layout */
.contact-layout {
  display: flex;
  gap: var(--space-10);
}

.contact-layout__form {
  width: 66.666%;
}

.contact-layout__sidebar {
  width: 33.333%;
}

@media (max-width: 1024px) {
  .contact-layout {
    flex-direction: column;
    gap: var(--space-6);
  }

  .contact-layout__form,
  .contact-layout__sidebar {
    width: 100%;
  }
}

/* Form */
.form__row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.form__group {
  margin-bottom: var(--space-3);
}

.form__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 14px var(--space-2);
  font-size: var(--text-base);
  font-family: inherit;
  border: 1px solid var(--border);
  background-color: var(--background);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: var(--focus-ring);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--text-light);
}

.form__select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b6b6b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form__textarea {
  resize: vertical;
  min-height: 160px;
}

.form__checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.form__checkbox {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
  accent-color: var(--primary);
}

.form__checkbox:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.form__checkbox-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-normal);
  cursor: pointer;
}

@media (max-width: 640px) {
  .form__row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .form__input,
  .form__select,
  .form__textarea {
    padding: 12px var(--space-2);
  }

  .form__checkbox-label {
    font-size: 13px;
  }
}

/* Sidebar Cards */
.sidebar-card {
  padding: var(--space-5);
  margin-bottom: var(--space-3);
}

.sidebar-card--dark {
  background-color: var(--dark);
  color: var(--background);
}

.sidebar-card--light {
  background-color: var(--secondary);
}

.sidebar-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-2);
}

.sidebar-card--dark .sidebar-card__title {
  color: var(--background);
}

.sidebar-card--dark .sidebar-card__text {
  color: var(--dark-text);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.sidebar-card--light .sidebar-card__text {
  color: var(--text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-3);
}

.sidebar-card__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.sidebar-card--dark .sidebar-card__list li {
  color: var(--dark-text);
}

.sidebar-card__list li::before {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  flex-shrink: 0;
  margin-top: 6px;
}

/* Success Message */
.form-success {
  background-color: var(--secondary);
  padding: var(--space-8);
  text-align: center;
}

.form-success__icon {
  width: 64px;
  height: 64px;
  background-color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.form-success__icon svg {
  width: 32px;
  height: 32px;
  color: var(--primary-foreground);
}

.form-success__title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-2);
}

.form-success__text {
  color: var(--text-muted);
}

/* ==========================================================================
   404 Page
   ========================================================================== */

.error-page {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4);
  margin-top: var(--header-height);
}

.error-page__code {
  font-size: clamp(80px, 15vw, 160px);
  font-weight: var(--font-weight-bold);
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-3);
}

.error-page__title {
  margin-bottom: var(--space-3);
}

.error-page__text {
  color: var(--text-secondary);
  margin-bottom: var(--space-5);
  max-width: 480px;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .header,
  .footer,
  .mobile-menu,
  .skip-link,
  .btn {
    display: none !important;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
  }

  .hero {
    min-height: auto;
    margin-top: 0;
  }

  .section {
    padding: 20pt 0;
  }
}