:root {
  /* Colors */
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-primary-active: rgba(26, 104, 115, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-secondary-hover: rgba(94, 82, 64, 0.2);
  --color-secondary-active: rgba(94, 82, 64, 0.25);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
  --color-card-border: rgba(94, 82, 64, 0.12);
  --color-card-border-inner: rgba(94, 82, 64, 0.12);
  --color-error: rgba(192, 21, 47, 1);
  --color-success: rgba(33, 128, 141, 1);
  --color-warning: rgba(168, 75, 47, 1);
  --color-info: rgba(98, 108, 113, 1);
  --color-focus-ring: rgba(33, 128, 141, 0.4);
  --color-select-caret: rgba(19, 52, 59, 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-primary-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: rgba(31, 33, 33, 1);
    --color-surface: rgba(38, 40, 40, 1);
    --color-text: rgba(245, 245, 245, 1);
    --color-text-secondary: rgba(167, 169, 169, 0.7);
    --color-primary: rgba(50, 184, 198, 1);
    --color-primary-hover: rgba(45, 166, 178, 1);
    --color-primary-active: rgba(41, 150, 161, 1);
    --color-secondary: rgba(119, 124, 124, 0.15);
    --color-secondary-hover: rgba(119, 124, 124, 0.25);
    --color-secondary-active: rgba(119, 124, 124, 0.3);
    --color-border: rgba(119, 124, 124, 0.3);
    --color-error: rgba(255, 84, 89, 1);
    --color-success: rgba(50, 184, 198, 1);
    --color-warning: rgba(230, 129, 97, 1);
    --color-info: rgba(167, 169, 169, 1);
    --color-focus-ring: rgba(50, 184, 198, 0.4);
    --color-btn-primary-text: rgba(19, 52, 59, 1);
    --color-card-border: rgba(119, 124, 124, 0.2);
    --color-card-border-inner: rgba(119, 124, 124, 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --button-border-secondary: rgba(119, 124, 124, 0.2);
    --color-border-secondary: rgba(119, 124, 124, 0.2);
    --color-select-caret: rgba(245, 245, 245, 0.8);

    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for dark mode */
    --color-success-rgb: 50, 184, 198;
    --color-primary-rgb: 50, 184, 198;
    --color-error-rgb: 255, 84, 89;
    --color-warning-rgb: 230, 129, 97;
    --color-info-rgb: 167, 169, 169;
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  --color-background: rgba(31, 33, 33, 1);
  --color-surface: rgba(38, 40, 40, 1);
  --color-text: rgba(245, 245, 245, 1);
  --color-text-secondary: rgba(167, 169, 169, 0.7);
  --color-primary: rgba(50, 184, 198, 1);
  --color-primary-hover: rgba(45, 166, 178, 1);
  --color-primary-active: rgba(41, 150, 161, 1);
  --color-secondary: rgba(119, 124, 124, 0.15);
  --color-secondary-hover: rgba(119, 124, 124, 0.25);
  --color-secondary-active: rgba(119, 124, 124, 0.3);
  --color-border: rgba(119, 124, 124, 0.3);
  --color-error: rgba(255, 84, 89, 1);
  --color-success: rgba(50, 184, 198, 1);
  --color-warning: rgba(230, 129, 97, 1);
  --color-info: rgba(167, 169, 169, 1);
  --color-focus-ring: rgba(50, 184, 198, 0.4);
  --color-btn-primary-text: rgba(19, 52, 59, 1);
  --color-card-border: rgba(119, 124, 124, 0.2);
  --color-card-border-inner: rgba(119, 124, 124, 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --button-border-secondary: rgba(119, 124, 124, 0.2);
  --color-border-secondary: rgba(119, 124, 124, 0.2);
  --color-select-caret: rgba(245, 245, 245, 0.8);

  /* Common style patterns - updated for dark mode */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for dark mode */
  --color-success-rgb: 50, 184, 198;
  --color-primary-rgb: 50, 184, 198;
  --color-error-rgb: 255, 84, 89;
  --color-warning-rgb: 230, 129, 97;
  --color-info-rgb: 167, 169, 169;
}

[data-color-scheme="light"] {
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-primary-active: rgba(26, 104, 115, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-secondary-hover: rgba(94, 82, 64, 0.2);
  --color-secondary-active: rgba(94, 82, 64, 0.25);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
  --color-card-border: rgba(94, 82, 64, 0.12);
  --color-card-border-inner: rgba(94, 82, 64, 0.12);
  --color-error: rgba(192, 21, 47, 1);
  --color-success: rgba(33, 128, 141, 1);
  --color-warning: rgba(168, 75, 47, 1);
  --color-info: rgba(98, 108, 113, 1);
  --color-focus-ring: rgba(33, 128, 141, 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: 33, 128, 141;
  --color-primary-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-md);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border: none;
  text-decoration: none;
  position: relative;
  white-space: nowrap; /* Keep this as default for most buttons */
}

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

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

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

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

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

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

.btn--secondary:active {
  background: var(--color-secondary-active);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

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

.btn--sm {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn--full-width {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
}

.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--space-16);
}

/* Card component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

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

.card__body {
  padding: var(--space-16);
}

.card__header,
.card__footer {
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - simplified with CSS variables */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(
    var(--color-success-rgb, 33, 128, 141),
    var(--status-bg-opacity)
  );
  color: var(--color-success);
  border: 1px solid
    rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(
    var(--color-error-rgb, 192, 21, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-error);
  border: 1px solid
    rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(
    var(--color-warning-rgb, 168, 75, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-warning);
  border: 1px solid
    rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(
    var(--color-info-rgb, 98, 108, 113),
    var(--status-bg-opacity)
  );
  color: var(--color-info);
  border: 1px solid
    rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Utility classes */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-4 {
  gap: var(--space-4);
}
.gap-8 {
  gap: var(--space-8);
}
.gap-16 {
  gap: var(--space-16);
}

.m-0 {
  margin: 0;
}
.mt-8 {
  margin-top: var(--space-8);
}
.mb-8 {
  margin-bottom: var(--space-8);
}
.mx-8 {
  margin-left: var(--space-8);
  margin-right: var(--space-8);
}
.my-8 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.p-0 {
  padding: 0;
}
.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.px-8 {
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}
.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}
.px-16 {
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

.block {
  display: block;
}
.hidden {
  display: none;
}

/* 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-width: 0;
}

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2')
    format('woff2');
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 4px;
}

/* Language Switcher */
.language-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.lang-select {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-base);
    color: white;
    padding: 8px 32px 8px 12px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: all var(--duration-fast) var(--ease-standard);
}

.lang-select:focus {
    outline: none;
    box-shadow: var(--focus-ring);
}

.lang-select option {
    background: var(--color-background);
    color: var(--color-text);
}

@media (prefers-color-scheme: dark) {
  .lang-select {
    background-color: rgba(38, 40, 40, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
  }
}

/* Header */
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.header-logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    text-decoration: none;
}

.header-nav {
    display: flex;
    gap: 16px;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 70vh; /* Reduced height */
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1e3a8a 0%, #0891b2 50%, #7c3aed 100%);
    overflow: hidden;
    padding: calc(var(--space-32) * 1.5) 0; /* Reduced padding */
}

#neural-network-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    text-align: center;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    color: white;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    margin-bottom: 32px;
    opacity: 0.9;
    line-height: 1.5;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-visual {
    display: none; /* No longer needed, canvas is the background */
}


/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: 60px;
    font-weight: var(--font-weight-bold);
    background: linear-gradient(135deg, var(--color-primary) 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Problem & Solution Section */
.problem-solution {
    background: linear-gradient(135deg, var(--color-surface) 0%, rgba(120, 58, 237, 0.05) 100%);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 40px;
}

.comparison-item {
    background: var(--color-surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-card-border);
    transition: transform var(--duration-normal) var(--ease-standard);
}

.comparison-item:hover {
    transform: translateY(-5px);
}

.comparison-item.before {
    border-left: 4px solid #ef4444;
}

.comparison-item.after {
    border-left: 4px solid var(--color-primary);
}

.comparison-item h3 {
    margin-bottom: 20px;
    font-size: var(--font-size-xl);
}

.comparison-item ul {
    list-style: none;
}

.comparison-item li {
    padding: 8px 0;
    position: relative;
    padding-left: 24px;
}

.comparison-item.before li::before {
    content: "✗";
    position: absolute;
    left: 0;
    color: #ef4444;
    font-weight: bold;
}

.comparison-item.after li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.comparison-arrow {
    font-size: 2rem;
    color: var(--color-primary);
    font-weight: bold;
}

.solution-intro {
    text-align: center;
    font-size: var(--font-size-lg);
    max-width: 800px;
    margin: 0 auto;
    color: var(--color-text-secondary);
}

/* Conversion IQ Section */
.conversion-iq {
    background: var(--color-background);
}

.iq-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.iq-feature {
    text-align: center;
    padding: 40px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-card-border);
    transition: all var(--duration-normal) var(--ease-standard);
}

.iq-feature:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.iq-feature h3 {
    margin-bottom: 16px;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

/* AI Solutions Section */
.ai-solutions {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.05) 0%, var(--color-surface) 100%);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.solution-card {
    background: var(--color-surface);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-card-border);
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), #7c3aed);
    transform: scaleX(0);
    transition: transform var(--duration-normal) var(--ease-standard);
}

.solution-card:hover::before {
    transform: scaleX(1);
}

.solution-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.solution-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.solution-card h3 {
    margin-bottom: 16px;
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.solution-card p {
    margin-bottom: 20px;
    color: var(--color-text-secondary);
}

.solution-card ul {
    list-style: none;
}

.solution-card li {
    padding: 4px 0;
    position: relative;
    padding-left: 20px;
    font-size: var(--font-size-sm);
}

.solution-card li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* Case Studies Section */
.case-study-carousel {
    position: relative;
    overflow: hidden;
}

.carousel-slides {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.carousel-slide {
    flex: 0 0 100%;
    box-sizing: border-box;
    padding: 0 20px;
}

.case-study-content {
    background: var(--color-surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-card-border);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.case-study-header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 16px;
}

.client-name {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: 8px;
}

.client-industry {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
}

.case-study-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.problem, .solution {
    padding-left: 16px;
}

.problem {
    border-left: 3px solid var(--color-error);
}

.solution {
    border-left: 3px solid var(--color-success);
}

.case-study-body h4 {
    font-size: var(--font-size-lg);
    margin-bottom: 12px;
}

.case-study-footer h4 {
    text-align: center;
    margin-bottom: 20px;
    font-size: var(--font-size-lg);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    text-align: center;
    margin-bottom: 24px;
}

.result-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    display: block;
}

.result-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    line-height: 1.3;
}

.testimonial {
    background: var(--color-secondary);
    padding: 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
}

.testimonial-quote {
    font-style: italic;
    margin-bottom: 12px;
}

.testimonial-author {
    text-align: right;
    font-weight: var(--font-weight-medium);
}

.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 30px;
    gap: 16px;
}

.carousel-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    transition: all var(--duration-fast) var(--ease-standard);
}

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

.carousel-dots {
    display: flex;
    gap: 8px;
}

.carousel-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-standard);
}

.carousel-dots .dot.active {
    background: var(--color-primary);
    transform: scale(1.2);
}

/* Final CTA Section */
.final-cta {
    background: linear-gradient(135deg, #1e3a8a 0%, #0891b2 50%, #7c3aed 100%);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 20px;
    font-weight: var(--font-weight-bold);
}

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: 32px;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--color-text);
    color: var(--color-background);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: 16px;
    color: var(--color-primary);
}

.footer-section h4 {
    margin-bottom: 16px;
    color: var(--color-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--color-background);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-standard);
}

.footer-section a:hover {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 16px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    opacity: 0.7;
}

/* Floating AI Chat */
.ai-chat-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #e2e8f0, #f8fafc);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.2);
    z-index: 1000;
    transition: all var(--duration-normal) var(--ease-standard);
    animation: bounce 2.5s infinite;
}

.ai-chat-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(var(--color-primary-rgb), 0.3);
    animation-play-state: paused; /* Pause animation on hover */
}

.ai-chat-float.chat-open {
    animation: none;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-15px);
    }
    60% {
        transform: translateY(-8px);
    }
}

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

.chat-icon-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

/* AI Chat Window */
.ai-chat-window {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 420px;
    height: 650px;
    max-width: 90vw;
    max-height: 85vh;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-card-border);
    z-index: 1001;
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.ai-chat-window.open {
    display: flex;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.chat-header {
    background: linear-gradient(135deg, var(--color-primary), #7c3aed);
    color: white;
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    margin: 0;
}

.chat-header-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-close, .chat-reset {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.chat-close {
    font-size: 1.5rem;
}

.chat-close:hover, .chat-reset:hover {
    opacity: 1;
}

.chat-reset svg {
    width: 18px;
    height: 18px;
}

.chat-messages {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    max-width: 80%;
    word-wrap: break-word;
}

.ai-message {
    align-self: flex-start;
}

.user-message {
    align-self: flex-end;
}

.message-content {
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.ai-message .message-content {
    background: var(--color-secondary);
    color: var(--color-text);
}

.user-message .message-content {
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
}

.chat-input {
    display: flex;
    padding: 16px;
    border-top: 1px solid var(--color-border);
    gap: 8px;
}

.chat-input input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    font-size: var(--font-size-sm);
    background: var(--color-background);
    color: var(--color-text);
}

.chat-input input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.send-btn {
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-base);
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: background var(--duration-fast) var(--ease-standard);
}

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

/* Cookie Consent Banner */
.cookie-consent-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-surface);
    color: var(--color-text);
    padding: 20px;
    z-index: 1005;
    display: none;
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

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

.cookie-consent-actions {
    display: flex;
    gap: 10px;
}

/* Page Overlay */
.page-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1004;
    display: none;
}

/* Cookie Preferences Modal */
.cookie-preferences-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1010;
    display: none;
    justify-content: center;
    align-items: center;
}

.cookie-preferences-modal .modal-content {
    background: var(--color-surface);
    color: var(--color-text);
    padding: 20px;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
}

.cookie-preferences-modal .modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.cookie-preferences-modal .modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.cookie-preference-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.cookie-preference-item input {
    margin-right: 10px;
}

.cookie-preference-item label {
    display: flex;
    flex-direction: column;
}

.cookie-preferences-modal .modal-footer {
    margin-top: 20px;
    text-align: right;
}

/* Modal styles for Google Form (copied from case-library/style.css) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1010; /* High z-index to be on top */
    display: none; /* Hidden by default */
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--color-surface);
    color: var(--color-text);
    padding: 20px;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 700px; /* Adjusted max-width for the form */
    height: 90%; /* Adjusted height for the form */
    display: flex;
    flex-direction: column;
    overflow: hidden; /* Hide scrollbars if content overflows */
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text); /* Ensure close button is visible in both themes */
}

.modal-body {
    flex-grow: 1; /* Allow body to take available space */
    overflow: auto; /* Add scroll if content is too large */
}

.modal-body iframe {
    width: 100%;
    height: 100%;
    border: none; /* Remove iframe default border */
}

/* Responsive adjustments for modal */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        height: 95%;
        padding: 15px;
    }
    .modal-header {
        margin-bottom: 15px;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .comparison-arrow {
        transform: rotate(90deg);
        justify-self: center;
    }
    
    .solutions-grid,
    .models-grid {
        grid-template-columns: 1fr;
    }
    
    .industries-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .ai-chat-window.open {
        width: 100vw;
        height: calc(100vh - var(--keyboard-height, 0px)); /* Adjust height based on keyboard */
        max-height: 100vh;
        top: auto; /* Remove fixed top */
        bottom: var(--keyboard-height, 0px); /* Position above keyboard */
        left: 0;
        right: 0;
        border-radius: 0;
    }
    
    .language-switcher {
        top: 10px;
        right: 10px;
    }

    .cookie-consent-banner .container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .cookie-consent-actions {
        flex-wrap: wrap;
        justify-content: center;
    }

    /* Header specific responsive styles */
    .header-content {
        flex-direction: column; /* Stack logo and nav vertically */
        gap: 15px; /* Add some space between stacked items */
        padding: 15px 0; /* Adjust padding */
    }

    .header-nav {
        flex-wrap: wrap; /* Allow navigation items to wrap */
        justify-content: center; /* Center items when wrapped */
        gap: 8px; /* Adjust gap for smaller screens if needed */
        width: 100%; /* Ensure nav takes full width to allow wrapping */
    }

    .header-nav .btn {
        white-space: normal; /* Allow text to wrap inside header buttons */
        word-break: break-word; /* Break long words if necessary */
        text-align: center; /* Center text within wrapped buttons */
        padding: var(--space-6) var(--space-12); /* Slightly smaller padding for wrapped buttons */
        font-size: var(--font-size-sm); /* Smaller font size */
        flex-grow: 1; /* Allow buttons to grow and fill space */
        min-width: 120px; /* Ensure a minimum width for readability */
    }
}

@media (max-width: 480px) {
    /* ... existing styles ... */
    .header-nav .btn {
        min-width: unset; /* Remove min-width for very small screens if needed */
        width: 100%; /* Make buttons full width on very small screens */
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
        white-space: normal !important; /* Ensure text wraps for hero buttons on small screens */
        word-break: break-word; /* Break long words if necessary */
        overflow-wrap: break-word; /* Ensure long words break */
        min-width: 0 !important; /* Allow button to shrink */
    }
    
    .ai-chat-float {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }
    
    .chat-icon {
        font-size: 1.2rem;
    }

    /* Fix for Russian button overflow */
    .cta-actions .btn {
        max-width: none; /* Remove max-width constraint */
        white-space: normal !important; /* Allow text to wrap */
        word-break: break-word; /* Break long words */
        overflow-wrap: break-word; /* Ensure long words break */
        min-width: 0 !important; /* Allow button to shrink */
    }
}

/* Typing indicator dots */
.typing-indicator .typing-dots {
    display: flex;
    align-items: center;
    gap: 4px;
}

.typing-indicator .typing-dots span {
    width: 8px;
    height: 8px;
    background-color: var(--color-text-secondary);
    border-radius: 50%;
    animation: bounce-dot 1.4s infinite ease-in-out both;
}

.typing-indicator .typing-dots span:nth-child(1) {
    animation-delay: -0.32s;
}
.typing-indicator .typing-dots span:nth-child(2) {
    animation-delay: -0.16s;
}
.typing-indicator .typing-dots span:nth-child(3) {
    animation-delay: 0s;
}

@keyframes bounce-dot {
    0%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-8px);
    }
}