/* CCSF Student Workers Union - Main Styles */

:root {
  --primary: #006747;
  --primary-dark: #004d35;
  --secondary: #004225;
  --accent: #ffc72c;
  --light: #faf9f7;
  --dark: #1a1a1a;
  --gray: #6b7280;
  --gray-light: #e5e7eb;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: var(--light);
}

/* Navigation */
.navbar {
  background: white;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-logo span {
  color: var(--secondary);
}

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

.nav-links a {
  text-decoration: none;
  color: var(--dark);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.2s;
}

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

/* Mobile menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--dark);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 6rem 2rem;
  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,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.1;
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.4rem;
  opacity: 0.95;
  max-width: 700px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--secondary);
  font-weight: 700;
}

.btn-primary:hover {
  background: #e6b200;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 199, 44, 0.4);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.8);
}

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

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

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

/* Sections */
.section {
  padding: 5rem 2rem;
}

.section-alt {
  background: white;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--gray);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: all 0.3s;
  border: 1px solid var(--gray-light);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--secondary);
}

.card p {
  color: var(--gray);
  line-height: 1.7;
}

/* Team/Bio Cards */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.team-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: all 0.3s;
  border: 1px solid var(--gray-light);
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.team-photo {
  height: 200px;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: white;
}

.team-info {
  padding: 1.5rem;
}

.team-info h3 {
  font-size: 1.25rem;
  color: var(--secondary);
  margin-bottom: 0.25rem;
}

.team-role {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.team-info p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Forms */
.form-section {
  max-width: 700px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--gray-light);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  padding: 1rem;
  background: var(--primary);
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
}

.form-submit:hover {
  background: var(--primary-dark);
}

/* Papers/Research List */
.paper-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.paper-card {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--gray-light);
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  transition: all 0.3s;
}

.paper-card:hover {
  transform: translateX(8px);
  border-color: var(--primary);
}

.paper-icon {
  width: 50px;
  height: 50px;
  background: var(--secondary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.paper-content h3 {
  font-size: 1.2rem;
  color: var(--secondary);
  margin-bottom: 0.5rem;
}

.paper-meta {
  font-size: 0.9rem;
  color: var(--gray);
  margin-bottom: 0.75rem;
}

.paper-content p {
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.paper-link {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.paper-link:hover {
  text-decoration: underline;
}

/* Page Header */
.page-header {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 4rem 2rem;
  text-align: center;
}

.page-header h1 {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.page-header p {
  font-size: 1.2rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* Stats */
.stats-row {
  display: flex;
  justify-content: center;
  gap: 4rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

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

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
}

.stat-label {
  font-size: 1rem;
  opacity: 0.9;
}

/* CTA Section */
.cta-section {
  background: var(--primary);
  color: white;
  text-align: center;
  padding: 4rem 2rem;
}

.cta-section h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.1rem;
  opacity: 0.95;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta-section .btn-primary:hover {
  background: var(--light);
}

/* Footer */
.footer {
  background: var(--secondary);
  color: white;
  padding: 3rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer p {
  opacity: 0.8;
  margin-bottom: 1.5rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.footer-links a {
  color: white;
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  font-size: 0.9rem;
  opacity: 0.7;
}

/* Tabs */
.tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: 2px solid var(--gray-light);
  border-radius: 8px;
  font-weight: 600;
  color: var(--gray);
  cursor: pointer;
  transition: all 0.2s;
}

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

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

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Responsive */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    padding: 0.75rem 1rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

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

  .section-header h2 {
    font-size: 2rem;
  }

  .stats-row {
    gap: 2rem;
  }

  .stat-number {
    font-size: 2.25rem;
  }

  .paper-card {
    flex-direction: column;
  }
}