/*
 * YegBUG Design System
 * Custom CSS for Edmonton Bioinformatics User Group
 * A scholarly, scientific community aesthetic
 */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */

:root {
  /* Primary palette - scholarly and scientific */
  --yb-navy: #1e3a5f;
  --yb-navy-dark: #152c4a;
  --yb-teal: #2d8b8b;
  --yb-teal-light: #e8f4f4;
  --yb-teal-hover: #247575;

  /* Accent colors - muted, professional */
  --yb-gold: #c4a35a;
  --yb-gold-light: #f8f3e8;
  --yb-sage: #6b8e6b;
  --yb-sage-light: #f0f5f0;

  /* Neutrals - warm academic tones */
  --yb-cream: #fafaf7;
  --yb-white: #ffffff;
  --yb-gray-100: #f7f7f5;
  --yb-gray-200: #e8e8e4;
  --yb-gray-300: #d1d1cb;
  --yb-gray-400: #a0a89c;
  --yb-gray-500: #6b7280;
  --yb-gray-600: #4a5568;
  --yb-gray-700: #374151;
  --yb-gray-800: #1f2937;

  /* Status colors - subdued */
  --yb-success: #5a8f5a;
  --yb-warning: #c9a227;
  --yb-info: #4a7c9b;
  --yb-error: #b85450;

  /* Shadows */
  --yb-shadow-sm: 0 1px 2px rgba(30, 58, 95, 0.05);
  --yb-shadow-md: 0 4px 6px rgba(30, 58, 95, 0.08);
  --yb-shadow-lg: 0 10px 25px rgba(30, 58, 95, 0.1);
  --yb-shadow-card: 0 2px 8px rgba(30, 58, 95, 0.06);

  /* Transitions */
  --yb-transition: all 0.25s ease;
  --yb-transition-fast: all 0.15s ease;

  /* Border radius */
  --yb-radius-sm: 4px;
  --yb-radius-md: 8px;
  --yb-radius-lg: 12px;
  --yb-radius-full: 9999px;

  /* Spacing */
  --yb-space-xs: 0.25rem;
  --yb-space-sm: 0.5rem;
  --yb-space-md: 1rem;
  --yb-space-lg: 1.5rem;
  --yb-space-xl: 2rem;
  --yb-space-2xl: 3rem;
  --yb-space-3xl: 4rem;
}

/* ========================================
   Base Typography
   ======================================== */

body {
  font-family: 'Source Serif 4', 'Georgia', serif;
  color: var(--yb-gray-700);
  background-color: var(--yb-cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6,
.yb-heading {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 600;
  color: var(--yb-navy);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 0.875rem;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.25rem;
  margin-bottom: 0.625rem;
}

h5 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

h6 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.lead {
  font-size: 1.125rem;
  color: var(--yb-gray-600);
  font-weight: 400;
}

a {
  color: var(--yb-teal);
  text-decoration: none;
  transition: var(--yb-transition-fast);
}

a:hover {
  color: var(--yb-teal-hover);
}

/* ========================================
   Navigation
   ======================================== */

.yb-navbar {
  background: linear-gradient(135deg, var(--yb-navy) 0%, var(--yb-navy-dark) 100%);
  box-shadow: var(--yb-shadow-md);
  padding: 0.75rem 0;
}

.yb-navbar .navbar-brand {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  color: var(--yb-white) !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.yb-navbar .navbar-brand svg {
  width: 32px;
  height: 32px;
}

.yb-navbar .nav-link {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85) !important;
  padding: 0.5rem 1rem !important;
  border-radius: var(--yb-radius-sm);
  transition: var(--yb-transition-fast);
}

.yb-navbar .nav-link:hover,
.yb-navbar .nav-link:focus {
  color: var(--yb-white) !important;
  background-color: rgba(255, 255, 255, 0.1);
}

.yb-navbar .nav-link.active,
.yb-navbar .nav-item.active .nav-link {
  color: var(--yb-white) !important;
  background-color: rgba(255, 255, 255, 0.15);
}

.yb-navbar .dropdown-menu {
  border: none;
  box-shadow: var(--yb-shadow-lg);
  border-radius: var(--yb-radius-md);
  padding: 0.5rem;
  margin-top: 0.5rem;
}

.yb-navbar .dropdown-item {
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: var(--yb-radius-sm);
  color: var(--yb-gray-700);
}

.yb-navbar .dropdown-item:hover {
  background-color: var(--yb-teal-light);
  color: var(--yb-teal);
}

/* ========================================
   Hero Section
   ======================================== */

.yb-hero {
  background: linear-gradient(135deg, var(--yb-teal) 0%, var(--yb-navy) 100%);
  position: relative;
  overflow: hidden;
  padding: 4rem 0;
}

.yb-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 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%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
}

.yb-hero-content {
  position: relative;
  z-index: 1;
}

.yb-hero h1 {
  color: var(--yb-white);
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.yb-hero .lead {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  max-width: 600px;
}

.yb-hero-icon {
  opacity: 0.2;
  position: absolute;
  right: -50px;
  top: 50%;
  transform: translateY(-50%);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  padding: 0.625rem 1.25rem;
  border-radius: var(--yb-radius-md);
  transition: var(--yb-transition);
  font-size: 0.9rem;
}

.yb-btn-primary,
.btn-primary {
  background-color: var(--yb-teal);
  border-color: var(--yb-teal);
  color: var(--yb-white);
}

.yb-btn-primary:hover,
.btn-primary:hover {
  background-color: var(--yb-teal-hover);
  border-color: var(--yb-teal-hover);
  transform: translateY(-1px);
  box-shadow: var(--yb-shadow-md);
}

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

.yb-btn-secondary:hover,
.btn-outline-primary:hover {
  background-color: var(--yb-teal);
  border-color: var(--yb-teal);
  color: var(--yb-white);
  transform: translateY(-1px);
}

.yb-btn-light {
  background-color: var(--yb-white);
  border-color: var(--yb-white);
  color: var(--yb-navy);
}

.yb-btn-light:hover {
  background-color: var(--yb-gray-100);
  box-shadow: var(--yb-shadow-md);
}

.btn-light {
  background-color: var(--yb-white);
  color: var(--yb-navy);
  border: none;
}

.btn-light:hover {
  background-color: var(--yb-gray-100);
  color: var(--yb-navy);
}

.btn-outline-light {
  border: 2px solid rgba(255, 255, 255, 0.8);
  color: var(--yb-white);
}

.btn-outline-light:hover {
  background-color: var(--yb-white);
  color: var(--yb-navy);
}

/* ========================================
   Cards
   ======================================== */

.yb-card,
.card {
  background: var(--yb-white);
  border: 1px solid var(--yb-gray-200);
  border-radius: var(--yb-radius-lg);
  box-shadow: var(--yb-shadow-card);
  transition: var(--yb-transition);
  overflow: hidden;
}

.yb-card:hover,
.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--yb-shadow-lg);
  border-color: var(--yb-gray-300);
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  color: var(--yb-navy);
  margin-bottom: 0.75rem;
}

.card-text {
  color: var(--yb-gray-600);
  line-height: 1.6;
}

/* Feature card variant */
.yb-feature-card {
  text-align: center;
  padding: 2rem;
}

.yb-feature-card .feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--yb-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.75rem;
}

.yb-feature-card .feature-icon.teal {
  background-color: var(--yb-teal-light);
  color: var(--yb-teal);
}

.yb-feature-card .feature-icon.sage {
  background-color: var(--yb-sage-light);
  color: var(--yb-sage);
}

.yb-feature-card .feature-icon.gold {
  background-color: var(--yb-gold-light);
  color: var(--yb-gold);
}

/* Team/Role card variant */
.yb-role-card {
  border-left: 4px solid var(--yb-teal);
}

.yb-role-card .role-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--yb-radius-full);
  background: linear-gradient(135deg, var(--yb-teal) 0%, var(--yb-navy) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--yb-white);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* ========================================
   Profile Cards (People)
   ======================================== */

.yb-profile-card {
  text-align: center;
}

.yb-profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--yb-radius-full);
  object-fit: cover;
  border: 3px solid var(--yb-gray-200);
  margin-bottom: 1rem;
}

.yb-profile-avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: var(--yb-radius-full);
  background: linear-gradient(135deg, var(--yb-gray-300) 0%, var(--yb-gray-400) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--yb-white);
  font-size: 2rem;
}

/* ========================================
   Badges & Tags
   ======================================== */

.badge {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: var(--yb-radius-full);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.yb-badge {
  background-color: var(--yb-gray-100);
  color: var(--yb-gray-600);
  border: 1px solid var(--yb-gray-200);
}

.yb-badge-teal,
.badge.bg-primary {
  background-color: var(--yb-teal-light) !important;
  color: var(--yb-teal) !important;
  border: 1px solid var(--yb-teal);
}

.yb-badge-sage,
.badge.bg-success {
  background-color: var(--yb-sage-light) !important;
  color: var(--yb-sage) !important;
  border: 1px solid var(--yb-sage);
}

.yb-badge-gold,
.badge.bg-warning {
  background-color: var(--yb-gold-light) !important;
  color: #8b7340 !important;
  border: 1px solid var(--yb-gold);
}

.badge.bg-info {
  background-color: #e8f1f5 !important;
  color: var(--yb-info) !important;
  border: 1px solid var(--yb-info);
}

.badge.bg-secondary {
  background-color: var(--yb-gray-100) !important;
  color: var(--yb-gray-600) !important;
}

.badge.bg-light {
  background-color: var(--yb-gray-100) !important;
  color: var(--yb-gray-700) !important;
  border: 1px solid var(--yb-gray-200);
}

/* ========================================
   Sections
   ======================================== */

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

.yb-section-alt {
  background-color: var(--yb-gray-100);
}

.yb-section-header {
  margin-bottom: 3rem;
}

.yb-section-header h2 {
  position: relative;
  display: inline-block;
}

.yb-section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--yb-teal) 0%, var(--yb-gold) 100%);
  border-radius: 2px;
}

.yb-section-header.text-center h2::after {
  left: 50%;
  transform: translateX(-50%);
}

/* ========================================
   Footer
   ======================================== */

.yb-footer {
  background: linear-gradient(135deg, var(--yb-navy-dark) 0%, var(--yb-navy) 100%);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 0 1.5rem;
  position: relative;
}

.yb-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--yb-teal) 0%, var(--yb-gold) 50%, var(--yb-sage) 100%);
}

.yb-footer h5,
.yb-footer h6 {
  color: var(--yb-white);
  font-family: 'Inter', sans-serif;
  font-weight: 600;
}

.yb-footer a {
  color: rgba(255, 255, 255, 0.7);
}

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

.yb-footer hr {
  border-color: rgba(255, 255, 255, 0.1);
  margin: 2rem 0;
}

.yb-footer-bottom {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* ========================================
   Event Cards
   ======================================== */

.yb-event-card {
  position: relative;
}

.yb-event-date {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--yb-navy);
  color: var(--yb-white);
  padding: 0.5rem 0.75rem;
  border-radius: var(--yb-radius-md);
  text-align: center;
  min-width: 60px;
}

.yb-event-date .month {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
}

.yb-event-date .day {
  font-family: 'Inter', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
}

.yb-event-date-badge {
  background: var(--yb-navy);
  color: white;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  text-align: center;
  min-width: 50px;
}

.yb-event-date-badge .month {
  font-family: 'Inter', sans-serif;
  font-size: 0.65rem;
  text-transform: uppercase;
  display: block;
  letter-spacing: 0.05em;
}

.yb-event-date-badge .day {
  font-family: 'Inter', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1;
}

/* ========================================
   Alerts
   ======================================== */

.alert {
  border-radius: var(--yb-radius-md);
  border: none;
  font-family: 'Inter', sans-serif;
}

.alert-success {
  background-color: var(--yb-sage-light);
  color: var(--yb-sage);
}

.alert-info {
  background-color: var(--yb-teal-light);
  color: var(--yb-teal);
}

.alert-warning {
  background-color: var(--yb-gold-light);
  color: #7d6633;
}

/* ========================================
   Pagination
   ======================================== */

.pagination .page-link {
  font-family: 'Inter', sans-serif;
  color: var(--yb-gray-600);
  border-color: var(--yb-gray-200);
  border-radius: var(--yb-radius-sm);
  margin: 0 0.15rem;
}

.pagination .page-link:hover {
  background-color: var(--yb-teal-light);
  border-color: var(--yb-teal);
  color: var(--yb-teal);
}

.pagination .page-item.active .page-link {
  background-color: var(--yb-teal);
  border-color: var(--yb-teal);
}

/* ========================================
   Mission/Vision blockquotes
   ======================================== */

.yb-mission-quote {
  background: linear-gradient(135deg, var(--yb-teal-light) 0%, var(--yb-white) 100%);
  border-left: 4px solid var(--yb-teal);
  padding: 1.5rem 2rem;
  border-radius: 0 var(--yb-radius-lg) var(--yb-radius-lg) 0;
  margin: 1.5rem 0;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--yb-gray-700);
}

/* ========================================
   Organization structure
   ======================================== */

.yb-org-level {
  position: relative;
  padding-left: 2rem;
}

.yb-org-level::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--yb-teal) 0%, var(--yb-gray-200) 100%);
}

/* ========================================
   Empty states
   ======================================== */

.yb-empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--yb-gray-500);
}

.yb-empty-state i {
  font-size: 4rem;
  opacity: 0.5;
  margin-bottom: 1rem;
}

/* ========================================
   Utility Classes
   ======================================== */

.text-teal {
  color: var(--yb-teal) !important;
}

.text-navy {
  color: var(--yb-navy) !important;
}

.text-gold {
  color: var(--yb-gold) !important;
}

.text-sage {
  color: var(--yb-sage) !important;
}

.bg-teal {
  background-color: var(--yb-teal) !important;
}

.bg-teal-light {
  background-color: var(--yb-teal-light) !important;
}

.bg-navy {
  background-color: var(--yb-navy) !important;
}

.bg-cream {
  background-color: var(--yb-cream) !important;
}

.border-teal {
  border-color: var(--yb-teal) !important;
}

/* ========================================
   Responsive adjustments
   ======================================== */

@media (max-width: 768px) {
  .yb-hero h1 {
    font-size: 2rem;
  }

  .yb-hero {
    padding: 3rem 0;
  }

  .yb-section {
    padding: 3rem 0;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }
}