: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://www.perplexity.ai/fonts/FKGroteskNeue.woff2')
    format('woff2');
}

:root {
  /* Harvard-inspired color scheme */
  --harvard-crimson: #A41034;
  --harvard-black: #000000;
  --harvard-gray: #808285;
  --harvard-silver: #B6B6B6;
  --harvard-white: #FFFFFF;
  
  /* Additional supporting colors */
  --crimson-dark: #8B0D2A;
  --crimson-light: #C41E3A;
  --background-cream: #FAFAFA;
  --text-dark: #2C2C2C;
  --text-light: #5A5A5A;
  
  /* Typography */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --section-padding: 80px 0;
  --container-padding: 0 20px;
  
  /* Shadows */
  --card-shadow: 0 8px 32px rgba(164, 16, 52, 0.08);
  --hover-shadow: 0 16px 48px rgba(164, 16, 52, 0.12);
  
  /* Transitions */
  --smooth-transition: all 0.3s ease;
  
  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--harvard-crimson);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  cursor: pointer;
  transition: var(--smooth-transition);
  border: none;
  text-decoration: none;
  position: relative;
  font-family: var(--font-body);
}

.btn--primary {
  background: var(--harvard-crimson);
  color: var(--harvard-white);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn--primary:hover {
  background: var(--crimson-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(164, 16, 52, 0.3);
}

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

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-dark);
  background-color: var(--harvard-white);
  border: 2px solid var(--harvard-silver);
  border-radius: 8px;
  transition: var(--smooth-transition);
  font-family: var(--font-body);
}

.form-control:focus {
  border-color: var(--harvard-crimson);
  outline: none;
  box-shadow: 0 0 0 3px rgba(164, 16, 52, 0.1);
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dark);
}

.form-group {
  margin-bottom: 1.5rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: var(--smooth-transition);
  border-bottom: 1px solid var(--harvard-silver);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--card-shadow);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo h2 {
  color: var(--harvard-crimson);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin: 0;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: var(--smooth-transition);
  position: relative;
}

.nav-link:hover {
  color: var(--harvard-crimson);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--harvard-crimson);
  transition: var(--smooth-transition);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--harvard-crimson);
  transition: var(--smooth-transition);
}

/* Hero Section */
.hero {
  height: 100vh;
  background: linear-gradient(135deg, var(--harvard-crimson) 0%, var(--crimson-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
  animation: sparkle 20s linear infinite;
}

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

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.1);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 20px;
}

.hero-title {
  font-size: 4rem;
  color: var(--harvard-white);
  margin-bottom: 0.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 2rem;
  color: var(--harvard-silver);
  margin-bottom: 1rem;
  font-weight: 400;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--harvard-white);
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-cta {
  display: inline-block;
  padding: 18px 45px;
  background: var(--harvard-white);
  color: var(--harvard-crimson);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  transition: var(--smooth-transition);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-cta:hover {
  background: var(--background-cream);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Sections */
section {
  padding: var(--section-padding);
}

.section-title {
  text-align: center;
  margin-bottom: 1rem;
  font-size: 2.5rem;
  color: var(--harvard-crimson);
}

.section-subtitle {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Why Choose Us */
.why-choose-us {
  background: var(--harvard-white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: var(--background-cream);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  transition: var(--smooth-transition);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(164, 16, 52, 0.05), transparent);
  transition: left 0.6s;
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: var(--harvard-crimson);
  box-shadow: var(--hover-shadow);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  color: var(--harvard-crimson);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.feature-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Course Section */
.course-section {
  background: var(--harvard-black);
  color: var(--harvard-white);
}

.course-section .section-title {
  color: var(--harvard-white);
}

.course-section .section-subtitle {
  color: var(--harvard-silver);
}

.course-card {
  background: var(--harvard-white);
  border-radius: 16px;
  padding: 3rem;
  margin-top: 3rem;
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--harvard-crimson), var(--crimson-light));
}

.course-header {
  margin-bottom: 2rem;
}

.course-header h3 {
  font-size: 2rem;
  color: var(--harvard-crimson);
  margin-bottom: 1rem;
}

.course-meta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.course-duration,
.course-eligibility {
  background: var(--harvard-crimson);
  color: var(--harvard-white);
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9rem;
}

.course-description {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  color: var(--text-dark);
}

.course-modules {
  margin-bottom: 2rem;
}

.course-modules h4 {
  color: var(--harvard-crimson);
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.module-item {
  background: var(--background-cream);
  padding: 1.5rem;
  border-radius: 12px;
  border-left: 4px solid var(--harvard-crimson);
  transition: var(--smooth-transition);
}

.module-item:hover {
  transform: translateX(5px);
  background: var(--harvard-crimson);
  color: var(--harvard-white);
}

.module-item h5 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--harvard-crimson);
}

.module-item:hover h5 {
  color: var(--harvard-white);
}

.module-item p {
  font-size: 0.9rem;
  margin: 0;
}

/* Gallery Section */
.gallery-section {
  background: var(--harvard-white);
}

.gallery-container {
  position: relative;
  margin-top: 3rem;
}

.gallery-scroll {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  padding: 1rem 0;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.gallery-scroll::-webkit-scrollbar {
  display: none;
}

.gallery-item {
  flex: 0 0 350px;
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--smooth-transition);
}

.gallery-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--hover-shadow);
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(164, 16, 52, 0.9));
  color: var(--harvard-white);
  padding: 2rem 1rem 1rem;
  font-weight: 600;
}

.gallery-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.gallery-btn {
  background: var(--harvard-crimson);
  color: var(--harvard-white);
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--smooth-transition);
}

.gallery-btn:hover {
  background: var(--crimson-dark);
  transform: scale(1.1);
}

/* Career Section */
.career-section {
  background: var(--background-cream);
}

.career-categories {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}

.career-category {
  background: var(--harvard-white);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--card-shadow);
  transition: var(--smooth-transition);
}

.career-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--hover-shadow);
}

.category-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.category-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 1rem;
}

.category-header h3 {
  color: var(--harvard-crimson);
  margin-bottom: 0.5rem;
}

.category-header p {
  color: var(--text-light);
  font-style: italic;
  margin: 0;
}

.career-items {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.career-item {
  background: var(--harvard-crimson);
  color: var(--harvard-white);
  padding: 0.75rem 1rem;
  border-radius: 20px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--smooth-transition);
}

.career-item:hover {
  background: var(--crimson-dark);
  transform: scale(1.05);
}

/* Placements Section */
.placements-section {
  background: var(--harvard-white);
}

.placement-companies {
  margin-bottom: 3rem;
  text-align: center;
}

.placement-companies h3 {
  color: var(--harvard-crimson);
  margin-bottom: 2rem;
}

.companies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.company-item {
  background: var(--harvard-gray);
  color: var(--harvard-white);
  padding: 1rem;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  transition: var(--smooth-transition);
}

.company-item:hover {
  background: var(--harvard-crimson);
  transform: scale(1.05);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testimonial-card {
  background: var(--background-cream);
  padding: 2rem;
  border-radius: 12px;
  border-left: 5px solid var(--harvard-crimson);
  transition: var(--smooth-transition);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 4rem;
  color: var(--harvard-crimson);
  font-family: var(--font-heading);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--hover-shadow);
}

.testimonial-content p {
  font-style: italic;
  color: var(--text-dark);
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.testimonial-author h4 {
  color: var(--harvard-crimson);
  margin-bottom: 0.5rem;
}

.testimonial-author span {
  color: var(--text-light);
  font-weight: 600;
}

/* Infrastructure Section */
.infrastructure-section {
  background: var(--background-cream);
}

.facilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.facility-card {
  background: var(--harvard-white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  transition: var(--smooth-transition);
  border-top: 4px solid var(--harvard-crimson);
  text-align: center;
}

.facility-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--hover-shadow);
}

.facility-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.facility-card h3 {
  color: var(--harvard-crimson);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.facility-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* About Section */
.about-section {
  background: var(--harvard-white);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
  align-items: start;
}

.about-text h3 {
  color: var(--harvard-crimson);
  margin-bottom: 1.5rem;
  font-size: 1.8rem;
}

.about-text p {
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.timeline {
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--harvard-crimson);
}

.timeline-item {
  display: flex;
  margin-bottom: 2rem;
  position: relative;
}

.timeline-year {
  background: var(--harvard-crimson);
  color: var(--harvard-white);
  padding: 12px 16px;
  border-radius: 8px;
  font-weight: 700;
  min-width: 80px;
  text-align: center;
  position: relative;
  z-index: 1;
  font-size: 0.9rem;
}

.timeline-content {
  margin-left: 2rem;
  background: var(--background-cream);
  padding: 1.5rem;
  border-radius: 8px;
  flex: 1;
  border-left: 3px solid var(--harvard-crimson);
}

.timeline-content h4 {
  color: var(--harvard-crimson);
  margin-bottom: 0.5rem;
}

.timeline-content p {
  color: var(--text-light);
  margin: 0;
}

/* Contact Section */
.contact-section {
  background: var(--harvard-black);
  color: var(--harvard-white);
}

.contact-section .section-title {
  color: var(--harvard-white);
}

.contact-section .section-subtitle {
  color: var(--harvard-silver);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.contact-form {
  background: var(--harvard-white);
  padding: 3rem;
  border-radius: 16px;
  box-shadow: var(--card-shadow);
}

.contact-form h3 {
  color: var(--harvard-crimson);
  margin-bottom: 2rem;
}

.contact-info {
  padding: 2rem 0;
}

.contact-details {
  margin-bottom: 3rem;
}

.contact-details h4 {
  color: var(--harvard-white);
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.5rem;
  gap: 0.5rem;
}

.contact-item strong {
  color: var(--harvard-white);
  font-weight: 600;
}

.contact-item span {
  color: var(--harvard-silver);
}

.ncvt-badge {
  background: var(--harvard-crimson);
  color: var(--harvard-white);
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
}

.badge-content h4 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
  color: var(--harvard-white);
}

.badge-content p {
  margin: 0;
  font-weight: 500;
}

/* Footer */
.footer {
  background: var(--harvard-gray);
  color: var(--harvard-white);
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
  color: var(--harvard-white);
  margin-bottom: 1rem;
}

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

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section ul li a {
  color: var(--harvard-silver);
  text-decoration: none;
  transition: var(--smooth-transition);
}

.footer-section ul li a:hover {
  color: var(--harvard-white);
}

.footer-bottom {
  border-top: 1px solid var(--harvard-silver);
  padding-top: 2rem;
  text-align: center;
  color: var(--harvard-silver);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--harvard-white);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: var(--card-shadow);
    padding: 2rem 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .features-grid,
  .facilities-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .course-meta {
    flex-direction: column;
    gap: 1rem;
  }
  
  .modules-grid {
    grid-template-columns: 1fr;
  }
  
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .container {
    padding: 0 15px;
  }
  
  .companies-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gallery-item {
    flex: 0 0 280px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .course-card,
  .contact-form {
    padding: 2rem 1.5rem;
  }
  
  section {
    padding: 60px 0;
  }
  
  .companies-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-item {
    flex: 0 0 250px;
  }
  
  .career-items {
    flex-direction: column;
  }
}

/* Animation styles */
.animate-element {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-element.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}