/* ===== CSS VARIABLES ===== */
:root {
  /* Brand Colors */
  --primary-color: #9405C6;
  --primary-light: #B347D9;
  --primary-dark: #7A0AA3;
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --black: #000000;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  --gradient-hero: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 70%, var(--gray-900) 100%);
  
  /* Typography */
  --font-family: 'Space Grotesk', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--white);
  overflow-x: hidden;
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section--dark {
  background-color: var(--gray-900);
  color: var(--white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.section__subtitle {
  font-size: var(--font-size-xl);
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

.section--dark .section__subtitle {
  color: var(--gray-300);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-2xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-lg);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn--primary:active {
  transform: translateY(0);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav__logo {
  height: 40px;
  width: auto;
}

.nav__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
}

.nav__menu {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
  list-style: none;
}

/* ===== LANGUAGE SELECTOR ===== */
.language-selector {
  position: relative;
  display: inline-block;
  margin-left: var(--spacing-lg);
}

.language-selector select {
  appearance: none;
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 8px 32px 8px 12px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition-fast);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 8px center;
  background-repeat: no-repeat;
  background-size: 16px;
}

.language-selector select:hover {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(75, 21, 190, 0.1);
}

.language-selector select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(75, 21, 190, 0.2);
}

.nav__link {
  font-weight: var(--font-weight-medium);
  color: var(--gray-700);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-normal);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav__toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--gray-800);
  transition: all var(--transition-fast);
}

@media (min-width: 768px) {
  .nav__menu {
    display: block;
  }
  
  .nav__toggle {
    display: none;
  }
}

/* ===== HERO SECTION ===== */
.hero {
  background: var(--gradient-hero);
  color: var(--white);
  padding: calc(80px + var(--spacing-4xl)) 0 var(--spacing-4xl);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__content {
  text-align: center;
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  margin-bottom: var(--spacing-xl);
}

.hero__highlight {
  background: linear-gradient(135deg, #F59E0B, #EF4444, var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--gray-200);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__cta {
  font-size: var(--font-size-lg);
  padding: var(--spacing-lg) var(--spacing-2xl);
}

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

.hero__mockup {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.hero__gradient-bg {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(148, 5, 198, 0.3) 0%, rgba(148, 5, 198, 0.1) 50%, transparent 100%);
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 4s ease-in-out infinite;
}

.hero__automation-visual {
  position: relative;
  z-index: 2;
}

.automation-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
  animation: float 6s ease-in-out infinite;
}

.automation-card__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.automation-card__avatar {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  position: relative;
}

.automation-card__avatar::after {
  content: '🤖';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 20px;
}

.automation-card__name {
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.automation-card__status {
  font-size: var(--font-size-xs);
  color: #10B981;
  display: flex;
  align-items: center;
  gap: 4px;
}

.automation-card__status::before {
  content: '';
  width: 8px;
  height: 8px;
  background: #10B981;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.automation-card__message {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

@media (min-width: 768px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    text-align: left;
  }
  
  .hero__content {
    text-align: left;
  }
  
  .hero__title {
    font-size: var(--font-size-5xl);
  }
  
  .hero__description {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (min-width: 1024px) {
  .hero__title {
    font-size: var(--font-size-6xl);
  }
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {
  0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.05); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* ===== HOW IT WORKS SECTION ===== */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-3xl);
}

.step {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xl);
  text-align: left;
}

.step__icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
}

.step__icon svg {
  width: 24px;
  height: 24px;
}

.step__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.step__description {
  color: var(--gray-600);
  line-height: 1.6;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .step {
    flex-direction: column;
    text-align: center;
  }
}

/* ===== FEATURES SECTION ===== */
.features {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(148, 5, 198, 0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(148, 5, 198, 0.3);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card__icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  color: var(--white);
  position: relative;
  z-index: 1;
}

.feature-card__icon svg {
  width: 24px;
  height: 24px;
}

.feature-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.feature-card__description {
  color: var(--gray-300);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

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

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

/* ===== TIMELINE SECTION ===== */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
}

.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: var(--spacing-3xl);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item__marker {
  position: absolute;
  left: 0;
  top: 0;
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  box-shadow: var(--shadow-lg);
}

.timeline-item__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--gray-900);
}

.timeline-item__description {
  color: var(--gray-600);
  line-height: 1.6;
}

@media (min-width: 768px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .timeline-item {
    width: 50%;
    padding-left: 0;
    padding-right: 80px;
  }
  
  .timeline-item:nth-child(even) {
    margin-left: auto;
    padding-right: 0;
    padding-left: 80px;
  }
  
  .timeline-item__marker {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .timeline-item:nth-child(even) .timeline-item__marker {
    left: 50%;
    transform: translateX(-50%);
  }
}

/* ===== ABOUT SECTION ===== */
.about {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.about__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-xl);
  line-height: 1.2;
}

.about__description {
  font-size: var(--font-size-lg);
  color: var(--gray-300);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.6;
}

.about__values {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

.value__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-light);
}

.value__description {
  color: var(--gray-300);
  line-height: 1.6;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.stat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
}

.stat-card__number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--primary-light);
  margin-bottom: var(--spacing-sm);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--gray-300);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

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

/* ===== FAQ SECTION ===== */
.faq {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--gray-200);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-xl) 0;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-item__question:hover {
  color: var(--primary-color);
}

.faq-item__question h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.faq-item__icon {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-light);
  transition: transform var(--transition-normal);
}

.faq-item.active .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out;
}

.faq-item.active .faq-item__answer {
  max-height: 300px;
  transition: max-height var(--transition-normal) ease-in;
}

.faq-item__answer p {
  padding-bottom: var(--spacing-xl);
  color: var(--gray-600);
  line-height: 1.6;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--gray-900);
  color: var(--white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer__logo {
  height: 32px;
  width: auto;
}

.footer__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer__link {
  color: var(--gray-300);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: var(--spacing-xl);
  text-align: center;
}

.footer__copyright {
  color: var(--gray-400);
  font-size: var(--font-size-sm);
}

@media (min-width: 768px) {
  .footer__content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 767px) {
  .section {
    padding: var(--spacing-3xl) 0;
  }
  
  .section__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero {
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* ===== SMOOTH SCROLLING OFFSET ===== */
html {
  scroll-padding-top: 80px;
}

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

/* Focus styles for keyboard navigation */
.nav__link:focus,
.btn:focus,
.faq-item__question:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --gray-600: #000000;
    --gray-300: #ffffff;
  }
}