/* ============================================
   Tilburg Investment Club - Main Stylesheet
   ============================================ */

/* CSS Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #0a1628;
  --color-primary-light: #111d32;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #3b82f6;
  --color-white: #ffffff;
  --color-off-white: #f8f9fa;
  --color-light-gray: #e9ecef;
  --color-mid-gray: #6b7280;
  --color-dark-gray: #374151;
  --color-text: #1f2937;
  --color-text-light: #9ca3af;
  --color-text-on-dark: #d1d5db;
  --color-border: #e5e7eb;
  --color-card-dark: #141e30;
  --color-success: #10b981;

  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Lexend', sans-serif;
  --font-ui: 'Instrument Sans', sans-serif;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition: 0.3s ease;
  --max-width: 1200px;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.6;
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-dark-gray);
}

.text-white h1, .text-white h2, .text-white h3, .text-white h4,
.text-white p, .text-white a, .text-white li, .text-white span {
  color: var(--color-white);
}

.text-white p, .text-white .subtitle {
  color: var(--color-text-on-dark);
}

/* ============================================
   Layout Utilities
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.section-sm {
  padding: 4rem 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

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

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

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

.subtitle {
  font-family: var(--font-ui);
  font-size: 1.15rem;
  color: var(--color-mid-gray);
  max-width: 640px;
}

.section-label {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent);
  margin-bottom: 1rem;
  display: inline-block;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header .subtitle {
  margin-top: 1rem;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

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

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

.btn-dark:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-sm {
  padding: 0.6rem 1.4rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

.btn .arrow {
  transition: transform var(--transition);
}

.btn:hover .arrow {
  transform: translateX(4px);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  padding: 0.75rem 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

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

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link .chevron {
  font-size: 0.7rem;
  transition: transform var(--transition);
}

.nav-item:hover .chevron {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 1.5rem;
  min-width: 560px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
  border: 1px solid var(--color-border);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.dropdown-category {
  padding: 0.75rem;
}

.dropdown-category-title {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-mid-gray);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all var(--transition);
}

.dropdown-link:hover {
  background: var(--color-off-white);
  color: var(--color-accent);
}

.dropdown-link .icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-apply {
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-apply:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

/* Mobile Nav */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition);
  border-radius: 2px;
}

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

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-primary);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 22, 40, 0.92) 0%,
    rgba(10, 22, 40, 0.7) 50%,
    rgba(10, 22, 40, 0.85) 100%
  );
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 700px;
  padding: 8rem 0 6rem;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: 1.5rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.hero p {
  color: var(--color-text-on-dark);
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-stat h3 {
  color: var(--color-white);
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.hero-stat p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card-body {
  padding: 1.75rem;
}

.card-body h4 {
  margin-bottom: 0.75rem;
}

.card-body p {
  font-size: 0.95rem;
  color: var(--color-mid-gray);
  margin-bottom: 1.25rem;
}

.card-tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-accent);
}

/* Dark Cards */
.card-dark {
  background: var(--color-card-dark);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.card-dark:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.card-dark h4 {
  color: var(--color-white);
}

.card-dark p {
  color: var(--color-text-on-dark);
}

/* Feature Card */
.feature-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(37, 99, 235, 0.2);
}

.feature-card .icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(37, 99, 235, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.feature-card h4 {
  margin-bottom: 0.75rem;
}

.feature-card p {
  font-size: 0.95rem;
}

/* Team Card */
.team-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.team-card-header {
  padding: 2rem 2rem 1.5rem;
  position: relative;
}

.team-card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.team-card-header h3 {
  margin-bottom: 0.5rem;
}

.team-card-header p {
  font-size: 0.95rem;
  color: var(--color-mid-gray);
}

.team-card-body {
  padding: 0 2rem 2rem;
}

.team-card-body ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.team-card-body li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--color-dark-gray);
}

.team-card-body li .check {
  color: var(--color-success);
  font-weight: bold;
  flex-shrink: 0;
}

.team-card-footer {
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--color-border);
  background: var(--color-off-white);
}

/* Sector Card */
.sector-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.sector-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.sector-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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

.sector-card .sector-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.sector-card h4 {
  margin-bottom: 0.5rem;
}

.sector-card p {
  font-size: 0.9rem;
  color: var(--color-mid-gray);
  margin-bottom: 1rem;
}

.sector-card .sector-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.sector-tag {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  background: var(--color-off-white);
  color: var(--color-mid-gray);
  border: 1px solid var(--color-border);
}

/* ============================================
   Testimonials
   ============================================ */
.testimonial-card {
  background: var(--color-card-dark);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition);
}

.testimonial-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.testimonial-card .quote {
  font-size: 1rem;
  color: var(--color-text-on-dark);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: rgba(255, 255, 255, 0.1);
}

.testimonial-info h5 {
  color: var(--color-white);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
}

.testimonial-info p {
  color: var(--color-text-light);
  font-size: 0.8rem;
}

/* ============================================
   Partners Rolling
   ============================================ */
.partners-section {
  padding: 3rem 0;
  background: var(--color-off-white);
  overflow: hidden;
}

.partners-track {
  display: flex;
  animation: scroll-partners 30s linear infinite;
  gap: 4rem;
  width: max-content;
}

.partners-track:hover {
  animation-play-state: paused;
}

.partner-logo {
  height: 36px;
  opacity: 0.5;
  filter: grayscale(100%);
  transition: all var(--transition);
  flex-shrink: 0;
}

.partner-logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

@keyframes scroll-partners {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: rgba(37, 99, 235, 0.2);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
}

.faq-question .faq-icon {
  font-size: 1.25rem;
  transition: transform var(--transition);
  color: var(--color-accent);
  flex-shrink: 0;
  margin-left: 1rem;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  color: var(--color-mid-gray);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================
   CTA / Newsletter Section
   ============================================ */
.cta-section {
  background: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.08);
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter-form {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
}

.newsletter-form input {
  flex: 1;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition);
}

.newsletter-form input::placeholder {
  color: var(--color-text-light);
}

.newsletter-form input:focus {
  border-color: var(--color-accent);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--color-primary);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 3rem 0 2rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo img {
  height: 36px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--color-text-light);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  transition: color var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-social {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: rgba(255, 255, 255, 0.12);
}

.footer-social img {
  width: 18px;
  height: 18px;
  filter: brightness(0) invert(0.7);
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--color-text-light);
}

/* ============================================
   Department Page Hero
   ============================================ */
.dept-hero {
  padding: 10rem 0 5rem;
  background: var(--color-primary);
  position: relative;
  overflow: hidden;
}

.dept-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.06);
}

.dept-hero::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.04);
}

.dept-hero .container {
  position: relative;
  z-index: 2;
}

.dept-hero h1 {
  color: var(--color-white);
  margin-bottom: 1.5rem;
}

.dept-hero .subtitle {
  color: var(--color-text-on-dark);
  font-size: 1.2rem;
  max-width: 640px;
}

.dept-hero .dept-badges {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.dept-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-on-dark);
}

/* ============================================
   Department Overview
   ============================================ */
.dept-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.dept-overview-img {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.dept-overview-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dept-overview-text h2 {
  margin-bottom: 1.25rem;
}

.dept-overview-text p {
  margin-bottom: 1rem;
}

/* ============================================
   Pillar Grid (quant page)
   ============================================ */
.pillar-card {
  background: var(--color-off-white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.pillar-card:hover {
  background: var(--color-white);
  border-color: var(--color-border);
  box-shadow: var(--shadow-lg);
}

.pillar-card .pillar-num {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: rgba(37, 99, 235, 0.15);
  margin-bottom: 1rem;
  line-height: 1;
}

.pillar-card h4 {
  margin-bottom: 0.75rem;
}

.pillar-card p {
  font-size: 0.9rem;
}

/* ============================================
   Page Specific: Dark Section
   ============================================ */
.dark-section {
  background: var(--color-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .dept-overview {
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }

  .nav-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--color-primary);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 999;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-dropdown {
    position: static;
    transform: none;
    min-width: unset;
    box-shadow: none;
    border: none;
    display: none;
    opacity: 1;
    visibility: visible;
    padding: 1rem;
    background: var(--color-off-white);
    border-radius: var(--radius-md);
    margin-top: 0.5rem;
  }

  .nav-item.open .nav-dropdown {
    display: block;
  }

  .dropdown-grid {
    grid-template-columns: 1fr;
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .dept-overview {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-content {
    padding: 7rem 0 4rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .footer-content {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .dept-hero {
    padding: 8rem 0 4rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

  .hero-buttons {
    flex-direction: column;
  }
}