/* Professional Medical Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Professional Theme (Light) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --accent-primary: #2563eb;
  --accent-secondary: #3b82f6;
  --accent-purple: #6366f1;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --navbar-bg: #ffffff;
  --card-bg: #ffffff;
  --radius-md: 8px;
  --radius-lg: 12px;
}

[data-theme="dark"] {
  /* Elegant Dark Theme Colors */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent-primary: #3b82f6;
  --accent-secondary: #60a5fa;
  --accent-purple: #818cf8;
  --border-color: #334155;
  --shadow-color: rgba(0, 0, 0, 0.5);
  --shadow-hover: rgba(0, 0, 0, 0.7);
  --navbar-bg: #0f172a;
  --card-bg: #1e293b;
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 2rem;
  background-color: var(--navbar-bg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
}

[data-theme="dark"] .navbar {
  background-color: rgba(45, 45, 45, 0.95);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo img {
  height: 32px;
  width: auto;
}

.logo span {
  color: var(--text-primary);
}

.logo span strong {
  color: var(--accent-secondary);
  font-weight: 700;
}

nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

nav ul li {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

nav ul li:hover {
  background-color: var(--bg-tertiary);
  color: var(--accent-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.book-btn {
  background-color: var(--accent-primary);
  color: white;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
}

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

.theme-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.theme-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

[data-theme="dark"] .theme-icon {
  transform: rotate(180deg);
}

/* Hero Section */
.hero {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-text h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.hero-text p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 36rem;
  margin-bottom: 2rem;
}

.learn-btn {
  background-color: var(--accent-primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-md);
}

.learn-btn:hover {
  background-color: var(--accent-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Hero Stats Card */
.hero-stats-card {
  background-color: var(--card-bg);
  padding: 30px;
  border-radius: 20px;
  box-shadow: 0 10px 30px var(--shadow-color);
  border: 1px solid var(--border-color);
  max-width: 350px;
  min-width: 300px;
}

.hero-stats-card .stats-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.quick-stat {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background-color: var(--bg-tertiary);
  border-radius: 12px;
  margin-bottom: 12px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.quick-stat:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

.quick-stat .stat-icon {
  font-size: 2rem;
  min-width: 50px;
  text-align: center;
}

.quick-stat div {
  flex: 1;
}

.quick-stat h4 {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 2px;
}

.quick-stat p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

.quick-action-btn {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-purple));
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-top: 15px;
  width: 100%;
}

.quick-action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(123, 97, 255, 0.4);
}

/* Quick Actions Section */
.quick-actions {
  padding: 60px 60px;
  background-color: var(--bg-secondary);
}

.quick-actions-container {
  max-width: 1100px;
  margin: 0 auto;
}

.quick-actions h2 {
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: 40px;
  color: var(--text-primary);
}

.actions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.action-btn {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  padding: 25px 20px;
  border: none;
  border-radius: 15px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px var(--shadow-color);
}

.action-btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(41, 169, 248, 0.4);
}

.action-icon {
  font-size: 2.5rem;
}

/* Footer */
.footer {
  background-color: var(--bg-tertiary);
  padding: 50px 60px 20px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto 30px;
}

.footer-section h4 {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: 15px;
  font-weight: 600;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  color: var(--accent-primary);
  margin-bottom: 15px;
}

.footer-desc {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.9rem;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
  font-size: 0.9rem;
}

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

.footer-contact {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Features Section */
.features {
  padding: 4rem 2rem;
  background-color: var(--bg-secondary);
}

.features h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: left;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  cursor: pointer;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    padding: 60px 30px;
    text-align: center;
  }

  .hero-text {
    max-width: 100%;
  }

  .hero-text h1 {
    font-size: 2.2rem;
    justify-content: center;
  }

  .hero-stats-card {
    margin-top: 30px;
    max-width: 100%;
    min-width: auto;
  }

  .hero-img {
    margin-top: 40px;
  }

  .navbar {
    flex-direction: column;
    gap: 10px;
    padding: 15px 30px;
  }

  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .quick-actions {
    padding: 40px 30px;
  }

  .actions-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .footer {
    padding: 40px 30px 20px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

/* Forms and Inputs */
.form-container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 2.5rem;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Profile Specific */
.profile-header {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.profile-avatar {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: white;
  font-weight: 700;
  box-shadow: var(--shadow-md);
}

.profile-info h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.profile-info p {
  color: var(--text-secondary);
  font-size: 1rem;
}

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

.info-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.info-item span {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

/* Professional Tables */
.professional-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
}

.professional-table th {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-color);
}

.professional-table td {
  padding: 1rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
}

.professional-table tr:last-child td {
  border-bottom: none;
}

.professional-table tr:hover td {
  background-color: rgba(37, 99, 235, 0.02);
}

.professional-table input,
.professional-table select {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-primary);
  padding: 0.5rem;
  width: 100%;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.professional-table input:focus,
.professional-table select:focus {
  background: var(--bg-secondary);
  border-color: var(--accent-primary);
  outline: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* Professional Charts & Analytics */
.chart-container {
  position: relative;
  height: 250px;
  width: 100%;
  margin: 1.5rem 0;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 200px;
  gap: 1rem;
  padding: 1rem;
}

.bar {
  flex: 1;
  background: linear-gradient(to top, var(--accent-primary), var(--clinical-blue));
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  position: relative;
  min-height: 5px;
  transition: all 0.3s ease;
}

.bar:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.bar-label {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

.bar-value {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.75rem;
}

.pie-chart-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.legend {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}