/* North-Star: Sophisticated Black & White Color Scheme */
:root {
  --color-white: #ffffff;
  --color-black: #0a0a0a;
  --color-dark-gray: #1a1a1a;
  --color-gray-900: #252525;
  --color-gray-800: #333333;
  --color-gray-700: #4a4a4a;
  --color-gray-600: #666666;
  --color-gray-500: #808080;
  --color-gray-400: #999999;
  --color-gray-300: #b3b3b3;
  --color-gray-200: #d9d9d9;
  --color-gray-100: #e6e6e6;
  --color-gray-50: #f5f5f5;
  --color-light-gray: #f8f8f8;
  
  --font-family-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-main);
  color: var(--color-black);
  background-color: var(--color-white);
  line-height: var(--line-height-base);
  font-size: var(--font-size-base);
}

/* ========== TYPOGRAPHY ========== */
h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--color-black);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.25rem;
  color: var(--color-dark-gray);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--color-gray-800);
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-gray-800);
}

h5, h6 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-gray-700);
}

p {
  margin-bottom: 1rem;
  color: var(--color-gray-700);
  font-size: 1rem;
  line-height: 1.8;
}

a {
  color: var(--color-black);
  text-decoration: none;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
}

a:hover {
  border-bottom-color: var(--color-gray-800);
}

/* ========== NAVIGATION ========== */
.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-100);
  backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav nav {
  display: flex;
  gap: 2rem;
  padding: 1.25rem 0;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

.nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-gray-700);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  letter-spacing: 0.3px;
}

.nav a:hover,
.nav a:focus {
  color: var(--color-black);
  border-bottom-color: var(--color-black);
}

.nav a:active {
  color: var(--color-gray-600);
}

/* ========== LAYOUT ========== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

main {
  min-height: calc(100vh - 200px);
}

/* ========== HERO SECTION ========== */
.hero {
  padding: 4rem 1rem;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-light-gray) 100%);
  border-bottom: 1px solid var(--color-gray-100);
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  max-width: 700px;
  margin-bottom: 2rem;
}

/* ========== CARDS & SECTIONS ========== */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: 8px;
  padding: 2rem;
  transition: var(--transition);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.card:hover {
  border-color: var(--color-gray-200);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.grid {
  display: grid;
  gap: 2rem;
  margin: 2rem 0;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 6px;
  border: 2px solid var(--color-black);
  background-color: var(--color-black);
  color: var(--color-white);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  line-height: 1.5;
}

.btn:hover {
  background-color: var(--color-gray-800);
  border-color: var(--color-gray-800);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-outlined {
  background-color: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}

.btn-outlined:hover {
  background-color: var(--color-black);
  color: var(--color-white);
}

.btn-secondary {
  background-color: var(--color-light-gray);
  color: var(--color-black);
  border-color: var(--color-gray-200);
}

.btn-secondary:hover {
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-300);
}

/* ========== SECTION STYLES ========== */
section {
  padding: 3rem 1rem;
  border-bottom: 1px solid var(--color-gray-100);
}

section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--color-gray-200);
}

/* ========== LIST STYLES ========== */
ul, ol {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--color-gray-700);
}

li {
  margin-bottom: 0.75rem;
  line-height: 1.8;
}

/* ========== FORM STYLES ========== */
form {
  margin: 2rem 0;
}

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

label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-gray-800);
}

input, textarea {
  width: 100%;
  padding: 0.75rem;
  font-family: var(--font-family-main);
  font-size: 1rem;
  border: 1px solid var(--color-gray-200);
  border-radius: 4px;
  background-color: var(--color-white);
  color: var(--color-black);
  transition: var(--transition);
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--color-black);
  box-shadow: 0 0 0 3px rgba(10, 10, 10, 0.1);
}

input::placeholder, textarea::placeholder {
  color: var(--color-gray-400);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========== FOOTER ========== */
footer {
  background-color: var(--color-dark-gray);
  color: var(--color-gray-200);
  padding: 3rem 1rem;
  margin-top: 3rem;
}

footer a {
  color: var(--color-gray-200);
  border-bottom-color: var(--color-gray-600);
}

footer a:hover {
  color: var(--color-white);
  border-bottom-color: var(--color-white);
}

footer p {
  color: var(--color-gray-300);
  margin-bottom: 0.5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

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

.footer-section ul {
  list-style: none;
  margin-left: 0;
}

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

/* ========== HIGHLIGHTS & ACCENTS ========== */
.highlight {
  background-color: var(--color-gray-100);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  font-weight: 500;
}

.accent-box {
  background-color: var(--color-light-gray);
  border-left: 4px solid var(--color-black);
  padding: 1.5rem;
  border-radius: 4px;
  margin: 1.5rem 0;
}

.accent-box p {
  margin-bottom: 0;
}

/* ========== BADGES & LABELS ========== */
.badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background-color: var(--color-gray-800);
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 20px;
  letter-spacing: 0.5px;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}

.badge-light {
  background-color: var(--color-gray-200);
  color: var(--color-black);
}

.badge-njit {
  background-color: var(--color-black);
  color: var(--color-white);
}

.badge-local {
  background-color: var(--color-dark-gray);
  color: var(--color-white);
}

.badge-founder {
  background-color: var(--color-gray-700);
  color: var(--color-white);
}

/* ========== FOUNDER VIBE ========== */
.founder-note {
  background: linear-gradient(135deg, rgba(10,10,10,0.02) 0%, rgba(10,10,10,0.05) 100%);
  border: 1px dashed var(--color-gray-300);
  padding: 1rem;
  border-radius: 6px;
  font-size: 0.95rem;
  color: var(--color-gray-700);
  margin: 1.5rem 0;
  font-style: italic;
}

.founder-note strong {
  color: var(--color-black);
  font-style: normal;
}

/* ========== CASE STUDY CARDS ========== */
.case-study-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: 8px;
  padding: 2rem;
  transition: var(--transition);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  position: relative;
}

.case-study-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-black) 0%, var(--color-gray-600) 100%);
  border-radius: 8px 8px 0 0;
}

.case-study-card:hover {
  border-color: var(--color-gray-300);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}

.case-study-meta {
  display: flex;
  gap: 1rem;
  margin: 1rem 0;
  font-size: 0.9rem;
  color: var(--color-gray-600);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-gray-100);
}

.case-study-metric {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.case-study-metric strong {
  color: var(--color-black);
  font-size: 1.1rem;
}

/* ========== LOCAL HERO ========== */
.local-callout {
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-light-gray) 100%);
  border: 2px solid var(--color-gray-200);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
  text-align: center;
}

.local-callout strong {
  color: var(--color-black);
  letter-spacing: -0.5px;
}

/* ========== WORKSHOP SECTION ========== */
.workshop-card {
  background: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: 8px;
  padding: 1.5rem;
  transition: var(--transition);
}

.workshop-card:hover {
  border-color: var(--color-black);
  background: var(--color-light-gray);
}

.workshop-card h4 {
  margin-top: 0;
}

/* ========== ICON STYLES (for emojis) ========== */
.icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  display: block;
}

/* ========== STATS SECTION ========== */
.stat-block {
  text-align: center;
  padding: 1.5rem;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-black);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--color-gray-600);
  font-weight: 500;
}

/* ========== DIVIDER ========== */
hr {
  border: none;
  border-top: 1px solid var(--color-gray-100);
  margin: 2rem 0;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .nav nav {
    gap: 1rem;
    padding: 1rem 0;
  }

  .nav a {
    font-size: 0.9rem;
    padding-bottom: 0.25rem;
  }

  .hero {
    padding: 2rem 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

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

  section {
    padding: 2rem 1rem;
  }

  .badge {
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
    margin-right: 0.35rem;
    margin-bottom: 0.35rem;
  }

  .stat-number {
    font-size: 2rem;
  }

  .case-study-meta {
    flex-direction: column;
    gap: 0.5rem;
  }
}