/*
 * Estilos BEM para el sitio estático de Zerogap
 * Refactorizado para usar metodología BEM (Block Element Modifier)
 * y HTML5 semántico
 */

/* ====================================
   VARIABLES CSS
   ==================================== */

:root {
  /* Paleta principal */
  --primary-color: #0066FF;
  --primary-dark: #0052CC;
  --primary-light: #3385FF;

  /* Tonos oscuros */
  --dark-900: #0A0A0A;
  --dark-800: #1A1A1A;
  --dark-700: #2A2A2A;
  --dark-600: #404040;

  /* Tonos claros */
  --light-100: #FFFFFF;
  --light-200: #F5F5F7;
  --light-300: #E8E8ED;
  --light-400: #D1D1D6;

  /* Texto */
  --text-primary: #1D1D1F;
  --text-secondary: #6E6E73;
  --text-tertiary: #86868B;

  /* Gradientes modernos */
  --gradient-primary: linear-gradient(135deg, #0066FF 0%, #0052CC 100%);
  --gradient-dark: linear-gradient(135deg, #0A0A0A 0%, #1A1A1A 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

  /* Sombras */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.16);

  /* Espaciado */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;
  --space-2xl: 120px;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Transiciones */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====================================
   TIPOGRAFÍA BASE
   ==================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--light-100);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
}

/* ====================================
   SCROLL PROGRESS
   ==================================== */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--gradient-primary);
  z-index: 9999;
  transition: width 0.1s ease;
}

/* ====================================
   SITE HEADER
   ==================================== */

.site-header {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding: 20px 40px;
  border-bottom: 1px solid transparent;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all var(--transition-base);
}

.site-header--scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: var(--shadow-md);
  padding: 16px 40px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.site-header__container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.site-header__logo img {
  height: 42px;
  filter: brightness(0) invert(1);
  transition: filter var(--transition-base);
}

.site-header--scrolled .site-header__logo img {
  filter: none;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 5px;
  z-index: 101;
  background: none;
  border: none;
}

.site-header__toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--light-100);
  margin: 3px 0;
  transition: all 0.3s ease;
  border-radius: 2px;
  display: block;
}

.site-header--scrolled .site-header__toggle span {
  background-color: var(--primary-color);
}

.site-header__toggle--active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.site-header__toggle--active span:nth-child(2) {
  opacity: 0;
}

.site-header__toggle--active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.site-header__overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.site-header__overlay--active {
  opacity: 1;
  visibility: visible;
}

/* ====================================
   MAIN NAVIGATION
   ==================================== */

.main-nav {
  display: flex;
  align-items: center;
}

.main-nav__link {
  text-decoration: none;
  color: var(--light-100);
  font-weight: 500;
  font-size: 1rem;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  letter-spacing: -0.01em;
}

.site-header--scrolled .main-nav__link {
  color: var(--text-primary);
}

.main-nav__link::before {
  content: '';
  position: absolute;
  bottom: 8px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  border-radius: 2px;
}

.main-nav__link:hover {
  color: var(--primary-light);
}

.site-header--scrolled .main-nav__link:hover {
  color: var(--primary-color);
}

.main-nav__link:hover::before {
  transform: scaleX(1);
}

.site-header--scrolled .main-nav__link::before {
  background: var(--primary-color);
}

.main-nav__link--active {
  color: var(--primary-light);
  background: transparent;
  box-shadow: none;
}

.site-header--scrolled .main-nav__link--active {
  color: var(--primary-color);
}

.main-nav__link--active::before {
  transform: scaleX(1);
}

.main-nav__link--active:hover {
  box-shadow: none;
  transform: none;
}

/* ====================================
   HERO SECTIONS
   ==================================== */

/* Hero Home */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-900);
  color: var(--light-100);
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 50%),
    url('images/industrial-process.jpg');
  background-size: 100%, 100%, cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0.4;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 1;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    transform: translate(0, 0);
  }

  100% {
    transform: translate(50px, 50px);
  }
}

.hero__content {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__title {
  font-size: clamp(3rem, 8vw, 6rem);
  margin: 0 0 0.2em;
  font-weight: 800;
  background: linear-gradient(135deg, #FFFFFF 0%, #A0A0A0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.04em;
  line-height: 0.95;
}

.hero__subtitle {
  font-size: clamp(1.25rem, 3vw, 2rem);
  margin: 0 0 1.5em;
  font-weight: 500;
  color: var(--light-400);
  letter-spacing: -0.01em;
  font-style: italic;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 1s ease-out 0.3s both;
}

.hero__description {
  max-width: 900px;
  margin: 0 auto 3em;
  text-align: left;
}

.hero__description p {
  margin-bottom: 1.5em;
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  color: var(--light-300);
}

/* Hero Page (Internal Pages) */
.hero--page {
  min-height: 60vh;
}

.hero--page::before {
  background:
    linear-gradient(135deg,
      rgba(10, 10, 10, 0.50) 0%,
      rgba(26, 26, 26, 0.40) 50%,
      rgba(10, 10, 10, 0.50) 100%),
    url('images/industrial-process.jpg');
  background-size: cover;
  background-position: center;
  opacity: 1;
}

/* Hero Stats */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin: var(--space-xl) auto;
  max-width: 800px;
}

/* ====================================
   STAT ITEM
   ==================================== */

.stat-item {
  text-align: center;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.stat-item:hover {
  border-color: rgba(0, 102, 255, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 102, 255, 0.2);
}

.stat-item:hover::before {
  opacity: 0.1;
}

.stat-item__number {
  display: block;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--light-100);
  line-height: 1;
  margin-bottom: 0.5em;
  position: relative;
  z-index: 1;
}

.stat-item__label {
  font-size: 14px;
  color: var(--light-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  position: relative;
  z-index: 1;
}

/* ====================================
   BUTTON
   ==================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: var(--light-100);
  color: var(--dark-900);
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 16px;
  transition: all var(--transition-base);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
  border: none;
  cursor: pointer;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
  border-radius: var(--radius-lg);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.btn:hover::before {
  opacity: 1;
}

.btn span {
  position: relative;
  z-index: 1;
  transition: color var(--transition-base);
}

.btn:hover span {
  color: var(--light-100);
}

.btn--primary {
  background: transparent;
  color: var(--light-100);
  border: 2px solid var(--light-100);
  box-shadow: none;
}

.btn--primary::before {
  background: var(--light-100);
}

.btn--primary:hover {
  background: var(--light-100);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

.btn--primary:hover span {
  color: var(--dark-900);
}

/* ====================================
   SERVICES SECTION
   ==================================== */

.services {
  background: var(--light-200);
  padding: 0;
  padding-top: var(--space-2xl);
}

.services__title {
  margin-bottom: var(--space-xl);
  padding: 0 var(--space-lg);
  color: var(--text-primary);
  text-align: center;
  font-size: clamp(2rem, 4vw, 3rem);
}

/* ====================================
   SERVICE CARD
   ==================================== */

.service-card {
  position: relative;
  width: 100%;
  margin: 0;
  padding: 0;
  min-height: 500px;
  display: flex;
  align-items: center;
  overflow: hidden;
  transition: all var(--transition-base);
}

.service-card:hover {
  transform: scale(1.01);
  z-index: 5;
}

.service-card__image-wrapper {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.service-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.service-card:hover .service-card__image {
  transform: scale(1.05);
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(10, 10, 10, 0.85) 0%,
      rgba(26, 26, 26, 0.75) 50%,
      rgba(10, 10, 10, 0.85) 100%);
  z-index: 1;
}

.service-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--gradient-x, 30%) var(--gradient-y, 50%),
      rgba(0, 102, 255, 0.15) 0%,
      transparent 50%);
  z-index: 2;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover::after {
  opacity: 1;
}

.service-card:nth-child(2) {
  --gradient-x: 70%;
  --gradient-y: 50%;
}

.service-card:nth-child(3) {
  --gradient-x: 50%;
  --gradient-y: 30%;
}

.service-card__content {
  position: relative;
  z-index: 10;
  max-width: 700px;
  padding: var(--space-xl);
  margin: 0 auto;
  color: var(--light-100);
}

@media (min-width: 769px) {
  .service-card__content {
    margin-left: var(--space-2xl);
  }
}

.service-card__title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--light-100);
  margin-bottom: var(--space-md);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.service-card__text {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--light-300);
  margin: 0;
}

/* ====================================
   SUITE SECTION
   ==================================== */

.suite {
  background: var(--light-200);
  padding: var(--space-2xl) 0;
  position: relative;
}

.suite__title {
  margin-bottom: var(--space-xl);
  color: var(--text-primary);
  padding: 0 var(--space-lg);
  text-align: center;
  font-size: clamp(2rem, 4vw, 3rem);
}

.suite__carousel {
  position: relative;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.suite__carousel-wrapper {
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.suite__carousel-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.suite__dots {
  display: flex;
  gap: 12px;
}

.suite__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--light-400);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  padding: 0;
}

.suite__dot--active {
  background: var(--primary-color);
  width: 24px;
  border-radius: 4px;
}

.suite__dot:hover {
  background: var(--text-secondary);
}

.suite__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--dark-900);
  color: white;
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  font-weight: 500;
  transition: all var(--transition-base);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.suite__btn--prev {
  left: 10px;
}

.suite__btn--next {
  right: 10px;
}

.suite__btn:hover {
  background: var(--dark-800);
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.suite__btn:active {
  transform: translateY(-50%) scale(0.95);
}

/* ====================================
   SUITE CARD
   ==================================== */

.suite-card {
  flex: 0 0 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 500px;
  overflow: hidden;
  background: var(--light-100);
}

@media (max-width: 768px) {
  .suite-card {
    grid-template-columns: 1fr;
    grid-template-rows: 250px auto;
    min-height: auto;
  }
}

.suite-card__image-wrapper {
  position: relative;
  height: 100%;
  overflow: hidden;
}

.suite-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.suite-card:hover .suite-card__image {
  transform: scale(1.05);
}

.suite-card__content {
  position: relative;
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--light-100);
}

.suite-card__title {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
}

.suite-card__text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin: 0;
}

/* ====================================
   AWARDS SECTION
   ==================================== */

.awards {
  padding: var(--space-2xl) var(--space-md) var(--space-lg);
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.awards__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.awards__title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.awards__subtitle {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 500;
  color: var(--primary-color);
}

.awards__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
}

/* ====================================
   AWARD CARD
   ==================================== */

.award-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.award-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
  border-color: var(--primary-light);
}

.award-card__logo-wrapper {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
}

.award-card__logo {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: grayscale(0%);
  transition: all var(--transition-base);
}

.award-card:hover .award-card__logo {
  transform: scale(1.05);
}

.award-card__title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-md) 0;
  line-height: 1.3;
}

.award-card__text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ====================================
   CLIENTS SECTION
   ==================================== */

.clients {
  background-color: #ffffff;
  overflow: hidden;
  padding: var(--space-2xl) var(--space-lg);
}

.clients__title {
  text-align: center;
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1em;
  color: var(--text-primary);
}

.clients__intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3em;
  font-size: 1.1rem;
  color: #666666;
}

.clients__carousel {
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  padding: 0 60px;
  overflow: hidden;
}

.clients__carousel::before,
.clients__carousel::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60px;
  z-index: 5;
  pointer-events: none;
}

.clients__carousel::before {
  left: 0;
  background: linear-gradient(to right, #ffffff, transparent);
}

.clients__carousel::after {
  right: 0;
  background: linear-gradient(to left, #ffffff, transparent);
}

.clients__carousel-track {
  display: flex;
  gap: 30px;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
  padding: 20px 0;
}

.clients__controls {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

.clients__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border: none;
  background: var(--dark-900);
  border-radius: 50%;
  color: white;
  font-size: 18px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  z-index: 10;
}

.clients__btn--prev {
  left: 10px;
}

.clients__btn--next {
  right: 10px;
}

.clients__btn:hover {
  background: var(--dark-800);
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
}

.clients__btn:active {
  transform: translateY(-50%) scale(0.95);
}

/* ====================================
   CLIENT ITEM
   ==================================== */

.client-item {
  flex: 0 0 180px;
  height: 120px;
  background: var(--light-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--light-300);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  animation: slideInFromLeft 0.6s ease forwards;
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.client-item:nth-child(1) {
  animation-delay: 0.1s;
}

.client-item:nth-child(2) {
  animation-delay: 0.15s;
}

.client-item:nth-child(3) {
  animation-delay: 0.2s;
}

.client-item:nth-child(4) {
  animation-delay: 0.25s;
}

.client-item:nth-child(5) {
  animation-delay: 0.3s;
}

.client-item:nth-child(6) {
  animation-delay: 0.35s;
}

.client-item:nth-child(7) {
  animation-delay: 0.4s;
}

.client-item:nth-child(8) {
  animation-delay: 0.45s;
}

.client-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.client-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.client-item:hover::before {
  opacity: 0.05;
}

.client-item__logo {
  width: 120px;
  height: 60px;
  object-fit: contain;
  filter: grayscale(100%) opacity(0.8);
  transition: all var(--transition-base);
  padding: 10px;
  position: relative;
  z-index: 1;
}

.client-item:hover .client-item__logo {
  filter: grayscale(0%) brightness(1) opacity(1);
  transform: scale(1.05);
}

/* ====================================
   CTA SECTION
   ==================================== */

.cta {
  position: relative;
  color: var(--light-100);
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-900) 0%, #1a1a2e 100%);
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(10, 10, 10, 0.92) 0%, rgba(26, 26, 26, 0.88) 100%),
    url('images/industrial-process.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  z-index: 0;
}

.cta::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}

.cta__container {
  position: relative;
  z-index: 10;
}

.cta h2 {
  color: var(--light-100);
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 0.5em;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta p {
  max-width: 700px;
  margin: 0 auto 2em;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  line-height: 1.6;
}

.cta .btn {
  padding: 18px 48px;
  background: var(--gradient-primary);
  color: white;
  font-weight: 600;
  font-size: 1.1rem;
  border: none;
  box-shadow: 0 8px 24px rgba(0, 102, 255, 0.3);
}

.cta .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 102, 255, 0.4);
}

.cta .btn span {
  color: white;
}

/* ====================================
   PILLARS SECTION
   ==================================== */

.pillars {
  background: var(--light-100);
  padding: var(--space-2xl) var(--space-lg);
}

.pillars__grid {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* ====================================
   PILLAR CARD
   ==================================== */

.pillar-card {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-lg);
  background: transparent;
  align-items: center;
}

.pillar-card__image-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  aspect-ratio: 16/9;
}

.pillar-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.pillar-card:hover .pillar-card__image {
  transform: scale(1.05);
}

.pillar-card__content {
  padding: 0;
}

.pillar-card__title {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
  line-height: 1.3;
}

.pillar-card__text {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
  font-size: 0.95rem;
}

.pillar-card__features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pillar-card__features li {
  position: relative;
  padding: 6px 0 6px 24px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.pillar-card__features li::before {
  content: "•";
  position: absolute;
  left: 8px;
  top: 6px;
  color: var(--text-tertiary);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ====================================
   METHODOLOGY SECTION
   ==================================== */

.methodology {
  background: var(--light-200);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
}

.methodology__title {
  margin-bottom: var(--space-md);
  font-size: clamp(2rem, 4vw, 3rem);
}

.methodology__intro {
  color: var(--text-secondary);
  font-size: clamp(1rem, 2vw, 1.15rem);
  max-width: 700px;
  margin: 0 auto var(--space-xl);
  line-height: 1.6;
}

.methodology__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

/* ====================================
   STEP CARD
   ==================================== */

.step-card {
  text-align: left;
  position: relative;
  padding: 0;
  background: transparent;
}

.step-card__number {
  display: inline-block;
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: 'Space Grotesk', sans-serif;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.05em;
  opacity: 0.5;
}

.step-card__title {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
  line-height: 1.3;
}

.step-card__text {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.9rem;
  margin: 0;
}

@media (min-width: 768px) {
  .step-card:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 60px;
    right: -20px;
    width: 40px;
    height: 2px;
    background: linear-gradient(to right, var(--primary-color), transparent);
    z-index: 1;
  }
}

/* ====================================
   CASES SECTION
   ==================================== */

.cases {
  background-color: var(--light-200);
  padding: var(--space-2xl) var(--space-lg);
}

.cases__container {
  max-width: 1400px;
  margin: 0 auto;
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 3em;
}

/* ====================================
   CASE CARD
   ==================================== */

.case-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  border: 1px solid rgba(11, 94, 215, 0.1);
  position: relative;
  overflow: hidden;
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(11, 94, 215, 0.15);
  border-color: var(--primary-color);
}

.case-card__icon {
  width: 100px;
  height: 100px;
  margin: 0 auto 25px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(11, 94, 215, 0.1);
  transition: all 0.3s ease;
}

.case-card:hover .case-card__icon {
  border-color: var(--primary-color);
  transform: scale(1.05);
}

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

.case-card__title {
  font-size: 1.3rem;
  color: var(--primary-color);
  margin-bottom: 1em;
  font-weight: 700;
}

.case-card__text {
  color: #666;
  margin-bottom: 1.5em;
  line-height: 1.6;
  font-size: 0.95rem;
}

.case-card__results {
  display: flex;
  justify-content: space-around;
  gap: 20px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(11, 94, 215, 0.1);
  flex-wrap: wrap;
}

.case-card__result-item {
  text-align: center;
  flex: 1;
}

.case-card__result-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
  margin-bottom: 0.3em;
}

.case-card__result-label {
  font-size: 0.8rem;
  color: #777;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  line-height: 1.2;
}

.case-card__details {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  text-align: left;
}

.case-card__details h4 {
  font-size: 1rem;
  color: var(--primary-color);
  margin-bottom: 0.5em;
  font-weight: 600;
}

.case-card__details p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.5em;
  line-height: 1.6;
}

.case-card__details p:last-child {
  margin-bottom: 0;
}

/* ====================================
   ACADEMIC SECTION
   ==================================== */

.academic {
  padding: var(--space-2xl) var(--space-lg);
  background: #ffffff;
}

.academic__header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}

.academic__title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.academic__intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.academic__tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.academic__tab-btn {
  padding: 10px 20px;
  border: 1px solid var(--light-300);
  background: transparent;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
}

.academic__tab-btn:hover,
.academic__tab-btn--active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.academic__content {
  max-width: 1000px;
  margin: 0 auto;
}

.academic__tab-pane {
  display: none;
  animation: fadeIn 0.5s ease;
}

.academic__tab-pane--active {
  display: block;
}

.pub-card {
  background: var(--light-100);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-bottom: 30px;
  border: 1px solid var(--light-300);
}

.pub-card--featured {
  border-left: 5px solid var(--primary-color);
  background: white;
  box-shadow: var(--shadow-md);
}

.pub-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
  flex-wrap: wrap;
  gap: 10px;
}

.pub-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.pub-card__badge {
  background: var(--accent-color);
  color: var(--dark-900);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.pub-card__authors {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.pub-card__venue {
  color: var(--text-primary);
  margin-bottom: 15px;
  font-size: 0.95rem;
}

.pub-card__link {
  display: inline-flex;
  align-items: center;
  color: var(--primary-color);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-base);
}

.pub-card__link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.pub-list {
  margin-top: 30px;
}

.pub-list__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.pub-list__item {
  padding: 15px;
  border-bottom: 1px solid var(--light-300);
  transition: background var(--transition-base);
}

.pub-list__item:hover {
  background: var(--light-200);
}

.pub-list__item:last-child {
  border-bottom: none;
}

/* ====================================
   SITE FOOTER
   ==================================== */

.site-footer {
  background: var(--dark-900);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-lg) 0;
}

.site-footer__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.site-footer__logo {
  display: flex;
  align-items: center;
  opacity: 0.8;
  transition: opacity var(--transition-base);
}

.site-footer__logo:hover {
  opacity: 1;
}

.site-footer__logo img {
  height: 24px;
  width: auto;
}

.site-footer__text {
  margin: 0;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.site-footer__link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition-base);
}

.site-footer__link:hover {
  color: var(--light-100);
}

/* ====================================
   RESPONSIVE - MOBILE
   ==================================== */

@media (max-width: 768px) {

  /* Header Mobile */
  .site-header__toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: white;
    flex-direction: column;
    padding: 80px var(--space-xl);
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 1001;
  }

  .main-nav--active {
    right: 0;
  }

  .main-nav__link {
    margin: 0 0 20px 0;
    padding: 15px 20px;
    width: 100%;
    font-size: 1.1rem;
    border-radius: 12px;
    border: 1px solid rgba(11, 94, 215, 0.1);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
  }

  .main-nav__link:hover {
    transform: translateX(5px);
    background: rgba(11, 94, 215, 0.1);
    border-color: var(--primary-color);
  }

  .main-nav__link--active {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(11, 94, 215, 0.3);
  }

  /* Service Cards Mobile */
  .service-card__content {
    margin-left: 0;
    padding: var(--space-lg);
  }

  /* Suite Cards Mobile */
  .suite-card {
    grid-template-columns: 1fr;
  }

  .suite-card__content {
    padding: var(--space-lg);
  }

  /* Pillar Cards Mobile */
  .pillar-card {
    grid-template-columns: 1fr;
  }

  .pillar-card__image-wrapper {
    min-height: 200px;
  }

  /* Footer Mobile */
  .site-footer__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 70vh;
    padding: var(--space-xl) var(--space-md);
  }

  .hero--page {
    min-height: 50vh;
  }

  .service-card {
    min-height: 400px;
  }

  .suite-card {
    min-height: 400px;
  }
}

/* ====================================
   UTILITY CLASSES
   ==================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

section {
  padding: var(--space-2xl) var(--space-lg);
}

section h2 {
  text-align: center;
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1em;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
}