: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-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-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, 0.15);
  --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);
  --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-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-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;
}

.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 */
html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow-x: hidden;
    font-family: var(--font-family-base);
    color: var(--color-text);
}

/* UMK Colors Override */
:root {
    --umk-primary: #0050AA;
    --umk-secondary: #FFCD00;
    --umk-dark: #0A1931;
    --umk-darkest: #090A0F;
    --umk-light: #F8F9FA;
}

/* Cosmic Background - FIXED POSITIONING */
.cosmic-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background: linear-gradient(135deg, var(--umk-dark) 0%, var(--umk-primary) 30%, #1a237e 70%, #000051 100%);
    background-attachment: fixed;
}

/* Animated Stars */
.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, var(--umk-secondary), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255, 255, 255, 0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, var(--umk-secondary), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, rgba(255, 255, 255, 0.8), transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 3s linear infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

/* Floating Planets */
.planets {
    position: absolute;
    width: 100%;
    height: 100%;
}

.planets::before {
    content: '';
    position: absolute;
    top: 20%;
    right: 10%;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, var(--umk-secondary) 30%, #FFB300 70%);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

.planets::after {
    content: '';
    position: absolute;
    bottom: 30%;
    left: 15%;
    width: 40px;
    height: 40px;
    background: radial-gradient(circle, var(--umk-primary) 30%, #003d82 70%);
    border-radius: 50%;
    opacity: 0.4;
    animation: float 8s ease-in-out infinite reverse;
}

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

/* Solar System - MAIN ANIMATION */
.solar-system {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto 3rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Sun */
.sun {
    position: absolute;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, #FFD700 0%, #FF8C00 50%, #FF4500 100%);
    border-radius: 50%;
    box-shadow: 
        0 0 20px #FFD700,
        0 0 40px #FF8C00,
        0 0 60px #FF4500;
    animation: sunGlow 2s ease-in-out infinite alternate;
    z-index: 3;
    will-change: transform;
}

@keyframes sunGlow {
    0% { 
        box-shadow: 
            0 0 20px #FFD700,
            0 0 40px #FF8C00,
            0 0 60px #FF4500;
        transform: scale(1);
    }
    100% { 
        box-shadow: 
            0 0 30px #FFD700,
            0 0 50px #FF8C00,
            0 0 70px #FF4500;
        transform: scale(1.05);
    }
}

/* Earth Orbit */
.earth-orbit {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: earthOrbit 15s linear infinite;
    transform-origin: center;
    will-change: transform;
}

@keyframes earthOrbit {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Earth */
.earth {
    position: absolute;
    top: -15px;
    left: 50%;
    margin-left: -15px;
    width: 30px;
    height: 30px;
    background: radial-gradient(circle at 30% 30%, #4A90E2 0%, #2E5C8A 50%, #1A3A5C 100%);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(74, 144, 226, 0.5);
    animation: earthRotation 15s linear infinite reverse;
    will-change: transform;
}

@keyframes earthRotation {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(-360deg); }
}

/* Moon Orbit */
.moon-orbit {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 70px;
    height: 70px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    animation: moonOrbit 4s linear infinite;
    transform-origin: center;
    will-change: transform;
}

@keyframes moonOrbit {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Moon */
.moon {
    position: absolute;
    top: -4px;
    left: 50%;
    margin-left: -4px;
    width: 8px;
    height: 8px;
    background: radial-gradient(circle, #D3D3D3 0%, #A9A9A9 100%);
    border-radius: 50%;
    box-shadow: 0 0 5px rgba(211, 211, 211, 0.3);
    animation: moonRotation 4s linear infinite reverse;
    will-change: transform;
}

@keyframes moonRotation {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(-360deg); }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 25, 49, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 205, 0, 0.3);
    transition: transform 0.3s ease-in-out;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-16);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-logo h2 {
    color: var(--umk-secondary);
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
}

.nav-menu {
    display: flex;
    gap: var(--space-24);
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--duration-fast) var(--ease-standard);
    padding: var(--space-8) var(--space-12);
    border-radius: var(--radius-base);
}

.nav-link:hover {
    color: var(--umk-secondary);
    background: rgba(255, 205, 0, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-4);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--umk-secondary);
    margin: 3px 0;
    transition: 0.3s;
    transform-origin: center;
}

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

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

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

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: rgba(10, 25, 49, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--space-32);
        transition: left 0.3s ease;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-link {
        font-size: var(--font-size-lg);
        padding: var(--space-16);
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
}

/* Content Sections */
.section {
    position: relative;
    padding: var(--space-32) 0;
    min-height: auto;
}

.hero {
    position: relative;
    padding: 120px 0 var(--space-32) 0;
    text-align: center;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    color: var(--umk-secondary);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: var(--space-16);
    animation: glow 2s ease-in-out infinite alternate;
    font-weight: var(--font-weight-bold);
}

@keyframes glow {
    from { 
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), 0 0 10px rgba(255, 205, 0, 0.3); 
    }
    to { 
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 205, 0, 0.6); 
    }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-32);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--space-16);
    justify-content: center;
    flex-wrap: wrap;
}

.section-title {
    text-align: center;
    font-size: var(--font-size-3xl);
    color: var(--umk-secondary);
    margin-bottom: var(--space-32);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    font-weight: var(--font-weight-semibold);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-12) var(--space-24);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-standard);
    font-size: var(--font-size-base);
}

.btn--primary {
    background: linear-gradient(135deg, var(--umk-primary), #003d82);
    color: white;
    border: 2px solid var(--umk-secondary);
    box-shadow: 0 4px 15px rgba(255, 205, 0, 0.3);
}

.btn--primary:hover {
    background: linear-gradient(135deg, #003d82, #002a5c);
    box-shadow: 0 6px 20px rgba(255, 205, 0, 0.4);
    transform: translateY(-2px);
}

.btn--secondary {
    background: rgba(255, 205, 0, 0.1);
    color: var(--umk-secondary);
    border: 2px solid var(--umk-secondary);
}

.btn--secondary:hover {
    background: rgba(255, 205, 0, 0.2);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 205, 0, 0.3);
    transform: translateY(-2px);
}

.btn--lg {
    padding: var(--space-16) var(--space-32);
    font-size: var(--font-size-lg);
}

/* Cards */
.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 205, 0, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform var(--duration-normal) var(--ease-standard);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.card__body {
    padding: var(--space-24);
}

.card h2, .card h3 {
    color: var(--umk-secondary);
    margin-bottom: var(--space-16);
    font-weight: var(--font-weight-semibold);
}

.card p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin-bottom: var(--space-16);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-24);
    margin-top: var(--space-32);
}

.service-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 205, 0, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-24);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-standard);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--umk-secondary);
    box-shadow: 0 10px 30px rgba(255, 205, 0, 0.2);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--space-16);
}

.service-card h3 {
    color: var(--umk-secondary);
    margin-bottom: var(--space-12);
    font-weight: var(--font-weight-semibold);
}

.service-card p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-20);
    line-height: 1.5;
}

/* Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-20);
    margin-top: var(--space-32);
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 205, 0, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--space-24);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-standard);
}

.stat-card:hover {
    transform: scale(1.05);
    border-color: var(--umk-secondary);
    box-shadow: 0 10px 30px rgba(255, 205, 0, 0.3);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--umk-secondary);
    margin-bottom: var(--space-8);
    text-shadow: 0 0 10px rgba(255, 205, 0, 0.5);
}

.stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

/* Footer */
.footer {
    position: relative;
    background: rgba(10, 25, 49, 0.9);
    border-top: 1px solid rgba(255, 205, 0, 0.3);
    padding: var(--space-32) 0 var(--space-16) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-24);
    flex-wrap: wrap;
    gap: var(--space-24);
}

.footer-info h3 {
    color: var(--umk-secondary);
    margin-bottom: var(--space-8);
    font-weight: var(--font-weight-semibold);
}

.footer-info p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    margin-bottom: var(--space-4);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 205, 0, 0.2);
    padding-top: var(--space-16);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

.footer-bottom a {
    color: var(--umk-secondary);
    text-decoration: none;
}

.ai-info {
    margin-top: var(--space-8);
    font-style: italic;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-16);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 100px 0 var(--space-24) 0;
    }
    
    .section {
        padding: var(--space-24) 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .solar-system {
        width: 250px;
        height: 250px;
    }
    
    .earth-orbit {
        width: 150px;
        height: 150px;
    }
    
    .sun {
        width: 50px;
        height: 50px;
    }
    
    .earth {
        width: 25px;
        height: 25px;
        top: -12.5px;
        margin-left: -12.5px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .planets::before {
        width: 40px;
        height: 40px;
        top: 15%;
        right: 5%;
    }
    
    .planets::after {
        width: 30px;
        height: 30px;
        bottom: 25%;
        left: 10%;
    }
    
    .solar-system {
        width: 200px;
        height: 200px;
    }
    
    .earth-orbit {
        width: 120px;
        height: 120px;
    }
}