/* LiquiMojo Landing Page Styles
 * Чистый CSS без зависимостей от фреймворков
 * Использует собственные классы и переменные
 */

/* ===== CSS VARIABLES ===== */
:root {
  /* Emotional Colors - Warm & Engaging */
  --landing-primary: #1e293b;        /* Deep navy for trust */
  --landing-secondary: #334155;      /* Slate for sophistication */
  --landing-accent: #06b6d4;         /* Bright cyan for energy */
  --landing-accent-hover: #0891b2;   /* Deeper cyan for interaction */
  --landing-success: #10b981;        /* Emerald for growth */
  --landing-warning: #f59e0b;        /* Amber for attention */
  --landing-gradient-start: #667eea; /* Blue gradient start */
  --landing-gradient-end: #764ba2;   /* Purple gradient end */
  --landing-background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  --landing-surface: rgba(255, 255, 255, 0.95);
  --landing-border: rgba(6, 182, 212, 0.1);
  --landing-text-primary: #0f172a;
  --landing-text-secondary: #475569;
  --landing-text-muted: #64748b;

  /* Spacing - Golden Ratio Harmony */
  --spacing-xs: 0.625rem;    /* 10px - divine proportion */
  --spacing-sm: 1rem;        /* 16px - base unit */
  --spacing-md: 1.625rem;    /* 26px - golden ratio step */
  --spacing-lg: 2.625rem;    /* 42px - golden ratio step */
  --spacing-xl: 4.25rem;     /* 68px - golden ratio step */
  --spacing-2xl: 6.875rem;   /* 110px - for hero sections */
  --spacing-3xl: 11.125rem;  /* 178px - for major sections */

  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 2rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;

  /* Font sizes */
  --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;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--landing-background);
  background-attachment: fixed;
  color: var(--landing-text-primary);
  line-height: 1.6;
  font-size: var(--font-size-base);
  animation: fadeInBody 1s ease-out;
}

@keyframes fadeInBody {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* ===== ACCESSIBILITY ===== */
.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;
}

/* ===== ANIMATIONS ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animate-visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bounce-in {
  animation: bounceIn 0.8s ease-out forwards;
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* ===== UTILITIES ===== */
.landing-container {
  width: 100%;
  padding: 0 var(--spacing-md);
  max-width: none;
}

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

/* ===== HEADER ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  position: relative;
}

.logo-container {
  flex-shrink: 0;
}

.logo-svg {
  height: 180px;
}

.header-content {
  flex: 1;
  max-width: 600px;
}

.header-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: flex-end;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(6, 182, 212, 0.1);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--landing-text-secondary);
  transition: all 0.3s ease;
}

.benefit-item:hover {
  background: rgba(6, 182, 212, 0.2);
  transform: translateX(-2px);
}

.benefit-icon {
  font-size: var(--font-size-lg);
}

.benefit-text {
  font-weight: 500;
}

.tagline {
  font-size: var(--font-size-xl);
  color: var(--landing-text-primary);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  line-height: 1.2;
}

.description {
  font-size: var(--font-size-base);
  color: var(--landing-text-secondary);
  line-height: 1.5;
  margin: 0;
  max-width: 500px;
}

/* ===== FEATURES ===== */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.feature-card {
  background: var(--landing-surface);
  backdrop-filter: blur(10px);
  border: 1px solid var(--landing-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.08);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--landing-accent), var(--landing-success));
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.feature-card h3 {
  text-align: center;
  margin-bottom: var(--spacing-sm);
  color: var(--landing-primary);
  font-weight: 700;
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(6, 182, 212, 0.15);
  border-color: rgba(6, 182, 212, 0.3);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--landing-accent), var(--landing-accent-hover));
  color: white;
}

.feature-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.feature-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--landing-text-primary);
  margin-bottom: var(--spacing-xs);
}

.feature-description {
  color: var(--landing-text-secondary);
  line-height: 1.5;
  font-size: var(--font-size-sm);
  text-align: left;
}

.feature-glow {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--landing-accent), var(--landing-accent-hover));
  opacity: 0;
  transition: var(--transition-normal);
}

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

/* ===== ARCHITECTURE ===== */
.landing-architecture {
  background: var(--landing-surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.arch-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--landing-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.arch-diagram {
  background: white;
  border: 1px solid var(--landing-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

.arch-content {
  max-width: none;
}

.arch-master-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.arch-component-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.arch-descriptions {
  margin-top: var(--spacing-xl);
}

.arch-column .arch-components {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.arch-overview {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--landing-surface);
  border-radius: var(--radius-md);
}

.arch-overview h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--landing-primary);
  margin-bottom: var(--spacing-sm);
}

.arch-overview p {
  color: var(--landing-text-secondary);
  line-height: 1.6;
  margin: 0;
  font-size: var(--font-size-base);
}

.arch-components {
  margin-bottom: var(--spacing-lg);
}

/* Italian Design - Elegant Component Styling */
.arch-component {
  background: var(--landing-surface);
  backdrop-filter: blur(10px);
  border: 1px solid var(--landing-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.08);
  min-height: 200px;
}

.arch-component::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--landing-accent) 0%,
    var(--landing-success) 50%,
    var(--landing-warning) 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.arch-component:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px rgba(6, 182, 212, 0.15);
  border-color: rgba(6, 182, 212, 0.3);
}

.arch-component h4 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--landing-primary);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

/* Special styling for different component types */
.admin-panel::before {
  background: linear-gradient(90deg, var(--landing-accent), var(--landing-success));
}

.business-data::before {
  background: linear-gradient(90deg, var(--landing-success), var(--landing-warning));
}

.migration-system::before {
  background: linear-gradient(90deg, var(--landing-warning), var(--landing-accent));
}

.security-system::before {
  background: linear-gradient(90deg, var(--landing-accent), var(--landing-warning));
}

.arch-component ul {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
  z-index: 1;
}

.arch-component li {
  color: var(--landing-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
  position: relative;
  font-size: var(--font-size-sm);
}

.arch-component li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--landing-accent);
  font-size: var(--font-size-xs);
  top: 2px;
}


.arch-flow {
  padding: var(--spacing-md);
  background: var(--landing-surface);
  border-radius: var(--radius-lg);
}

.arch-flow h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--landing-primary);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.flow-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 500px;
  margin: 0 auto;
}

.flow-step {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: white;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
}

.flow-step:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--landing-accent);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}

.step-text {
  color: var(--landing-text-primary);
  font-size: var(--font-size-base);
  line-height: 1.4;
}

.arch-description {
  font-size: var(--font-size-lg);
  color: var(--landing-text-secondary);
  line-height: 1.7;
  max-width: 800px;
  margin: 0 auto;
}

/* ===== TECHNOLOGIES ===== */
.landing-technologies {
  margin-bottom: var(--spacing-xl);
}

.tech-title {
  text-align: center;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--landing-primary);
  margin-bottom: var(--spacing-lg);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

.tech-item {
  background: var(--landing-surface);
  border: 1px solid var(--landing-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  text-align: center;
  transition: var(--transition-normal);
}

.tech-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.tech-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--landing-text-primary);
  margin-bottom: var(--spacing-xs);
}

.tech-desc {
  color: var(--landing-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

/* ===== SUCCESS STORIES ===== */
.success-stories {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(6,182,212,0.05) 100%);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-xl);
}

.success-title {
  text-align: center;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--landing-primary);
  margin-bottom: var(--spacing-lg);
}

.stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.story-card {
  background: var(--landing-surface);
  backdrop-filter: blur(10px);
  border: 1px solid var(--landing-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  position: relative;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.08);
}

.story-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(6, 182, 212, 0.15);
}

.story-card::before {
  content: '"';
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  font-size: var(--font-size-4xl);
  color: var(--landing-accent);
  opacity: 0.3;
  font-family: serif;
}

.story-quote {
  font-style: italic;
  line-height: 1.6;
  color: var(--landing-text-primary);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

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

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--landing-accent), var(--landing-success));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-base);
}

.author-info {
  flex: 1;
}

.author-name {
  font-weight: 600;
  color: var(--landing-primary);
  font-size: var(--font-size-sm);
}

.author-role {
  color: var(--landing-text-secondary);
  font-size: var(--font-size-xs);
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: var(--spacing-md) 0;
  color: var(--landing-text-muted);
  border-top: 1px solid var(--landing-border);
  background: var(--landing-surface);
}

.footer-content p {
  margin: 0;
  font-size: var(--font-size-xs);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .landing-container {
    padding: 0 var(--spacing-md);
  }

  .header {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0 var(--spacing-md);
  }

  .header-benefits {
    align-items: center;
    margin-top: var(--spacing-md);
  }

  .benefit-item {
    font-size: var(--font-size-xs);
  }

  .logo-svg {
    height: 140px;
  }

  .tagline {
    font-size: var(--font-size-lg);
  }

  .description {
    font-size: var(--font-size-sm);
    max-width: none;
  }

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

  .feature-card {
    padding: var(--spacing-lg);
  }

  .landing-architecture {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .arch-title {
    font-size: var(--font-size-3xl);
  }

  .arch-diagram {
    padding: var(--spacing-lg);
  }

  .arch-overview {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
  }

  .arch-overview h3 {
    font-size: var(--font-size-lg);
  }

  .arch-overview p {
    font-size: var(--font-size-base);
  }

  .arch-components {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
  }

  .arch-component {
    padding: var(--spacing-md);
  }

  .flow-steps {
    gap: var(--spacing-sm);
  }

  .flow-step {
    padding: var(--spacing-sm);
    gap: var(--spacing-sm);
  }

  .step-number {
    width: 28px;
    height: 28px;
    font-size: var(--font-size-xs);
  }

  .tech-title {
    font-size: var(--font-size-3xl);
  }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .tech-item {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .landing-container {
    padding: 0 var(--spacing-sm);
  }

  .header {
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0 var(--spacing-sm);
  }

  .logo-svg {
    height: 120px;
  }

  .tagline {
    font-size: var(--font-size-base);
  }

  .description {
    font-size: var(--font-size-xs);
  }

  .header-benefits {
    align-items: center;
    margin-top: var(--spacing-sm);
  }

  .benefit-item {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .success-stories {
    padding: var(--spacing-lg) 0;
  }

  .success-title {
    font-size: var(--font-size-lg);
  }

  .story-card {
    padding: var(--spacing-sm);
  }

  .author-avatar {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
  }

  .feature-card {
    padding: var(--spacing-md);
  }

  .landing-architecture {
    padding: var(--spacing-lg) var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
  }

  .arch-columns {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .arch-component-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .arch-component {
    min-height: auto;
    padding: var(--spacing-md);
  }

  .arch-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
  }

  .arch-diagram {
    padding: var(--spacing-md);
  }

  .arch-overview {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
  }

  .arch-overview h3 {
    font-size: var(--font-size-base);
  }

  .arch-overview p {
    font-size: var(--font-size-sm);
  }

  .arch-components {
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
  }

  .arch-component {
    padding: var(--spacing-sm);
  }

  .arch-component-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .arch-component h4 {
    font-size: var(--font-size-base);
  }

  .arch-flow {
    padding: var(--spacing-md);
  }

  .flow-steps {
    gap: var(--spacing-xs);
  }

  .flow-step {
    padding: var(--spacing-xs);
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xs);
  }

  .step-number {
    width: 24px;
    height: 24px;
    font-size: var(--font-size-xs);
  }

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

  .success-title {
    font-size: var(--font-size-xl);
  }

  .stories-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .story-card {
    padding: var(--spacing-md);
  }

  .tech-title {
    font-size: var(--font-size-2xl);
  }
}