@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Light Theme (Default) */
  --bg-primary: #f6f8fc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  /* Brand/Theme Gradients */
  --grad-clinical: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
  --glow-clinical: rgba(14, 165, 233, 0.2);
  
  --grad-academic: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
  --glow-academic: rgba(245, 158, 11, 0.2);
  
  --grad-wellness: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --glow-wellness: rgba(99, 102, 241, 0.2);
  
  --brand: #6366f1;
  --border-color: rgba(226, 232, 240, 0.8);
  --glass-blur: 16px;
  
  /* Layout Radius & Shadow */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --shadow-md: 0 10px 30px -10px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 40px -15px rgba(15, 23, 42, 0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  /* Dark Theme */
  --bg-primary: #070b13;
  --bg-secondary: #0f172a;
  --bg-card: rgba(15, 23, 42, 0.6);
  --bg-card-hover: rgba(15, 23, 42, 0.85);
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.06);
  
  --glow-clinical: rgba(14, 165, 233, 0.4);
  --glow-academic: rgba(245, 158, 11, 0.4);
  --glow-wellness: rgba(99, 102, 241, 0.4);
}

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

body {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: var(--transition);
  padding-bottom: 6rem;
}

/* Ambient glow bubbles */
body::before, body::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: 0.12;
  pointer-events: none;
  transition: var(--transition);
}
body::before {
  top: -150px;
  right: -100px;
  background: radial-gradient(circle, #6366f1 0%, transparent 70%);
}
body::after {
  bottom: -150px;
  left: -100px;
  background: radial-gradient(circle, #0ea5e9 0%, transparent 70%);
}
[data-theme="dark"]::before, [data-theme="dark"]::after {
  opacity: 0.22;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-card);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.brand-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.brand-info h1 {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.brand-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.icon-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.icon-btn:hover {
  background: rgba(99, 102, 241, 0.1);
  color: #6366f1;
  border-color: #6366f1;
}

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Greeting Section */
.welcome-hero {
  margin: 3rem 0 2rem 0;
  text-align: center;
  animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-15px); }
  to { opacity: 1; transform: translateY(0); }
}

.welcome-hero h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--text-primary) 30%, #6366f1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.welcome-hero p {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  max-width: 600px;
  margin: 0 auto;
}

/* Search Bar Wrapper */
.search-wrapper {
  max-width: 500px;
  margin: 0 auto 3rem auto;
  position: relative;
  box-shadow: var(--shadow-md);
  border-radius: 50px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.search-wrapper:focus-within {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15), var(--shadow-lg);
}

.search-input {
  width: 100%;
  padding: 1rem 1.5rem 1rem 3rem;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
}

.search-icon {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Section Dividers */
.section-title {
  font-size: 1.2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

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

/* Grid Layout */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

/* Home Card Styles */
.hub-card {
  text-decoration: none;
  color: inherit;
  background: var(--bg-card);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 200px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.hub-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  transition: var(--transition);
}

/* Category Accents & Glows */
.hub-card.clinical::before { background: var(--grad-clinical); }
.hub-card.academic::before { background: var(--grad-academic); }
.hub-card.wellness::before { background: var(--grad-wellness); }

.hub-card.clinical:hover {
  border-color: #0ea5e9;
  box-shadow: 0 15px 35px -10px var(--glow-clinical);
  transform: translateY(-5px);
  background: var(--bg-card-hover);
}

.hub-card.academic:hover {
  border-color: #f59e0b;
  box-shadow: 0 15px 35px -10px var(--glow-academic);
  transform: translateY(-5px);
  background: var(--bg-card-hover);
}

.hub-card.wellness:hover {
  border-color: #6366f1;
  box-shadow: 0 15px 35px -10px var(--glow-wellness);
  transform: translateY(-5px);
  background: var(--bg-card-hover);
}

/* Icon box inside Card */
.card-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: white;
  transition: var(--transition);
}

.hub-card.clinical .card-icon-box { background: var(--grad-clinical); }
.hub-card.academic .card-icon-box { background: var(--grad-academic); }
.hub-card.wellness .card-icon-box { background: var(--grad-wellness); }

.hub-card:hover .card-icon-box {
  transform: scale(1.1) rotate(3deg);
}

/* Card details */
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  flex: 1;
}

/* Badge inside Card */
.card-badge {
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 50px;
  margin-top: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.hub-card.clinical .card-badge { background: rgba(14, 165, 233, 0.12); color: #0ea5e9; }
.hub-card.academic .card-badge { background: rgba(245, 158, 11, 0.12); color: #d97706; }
.hub-card.wellness .card-badge { background: rgba(99, 102, 241, 0.12); color: #6366f1; }

.card-badge.waiting {
  background: rgba(239, 68, 68, 0.1) !important;
  color: #ef4444 !important;
}

/* Hover arrow indicator */
.card-arrow {
  position: absolute;
  right: 1.5rem;
  bottom: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  transform: translateX(-5px);
  opacity: 0;
  transition: var(--transition);
}

.hub-card:hover .card-arrow {
  transform: translateX(0);
  opacity: 1;
}

/* Modal styling for placeholder links */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 480px;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
  position: relative;
  animation: modalIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.175);
}

@keyframes modalIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin: 0 auto 1.5rem auto;
}

.modal h3 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.modal p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.modal-close-btn {
  background: transparent;
  border: none;
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

/* Empty State Search */
.empty-state {
  display: none;
  text-align: center;
  padding: 3rem 0;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}