/* Psychological Design Variables */
:root {
  --primary: #00c8ff;
  --secondary: #7b2dff;
  --accent: #ff2d7b;
  --dark: #0a0e17;
  --darker: #05080f;
  --light: #f0f5ff;
  --soft-gray: #8a9bb8;
  --text-light: #ffffff;
  --text-muted: #b0b0b0;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --membrane-medium: rgba(123, 45, 255, 0.3);
  --glow: 0 0 20px rgba(0, 200, 255, 0.3);
  --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 12px 48px rgba(0, 0, 0, 0.15);
  --gradient-primary: linear-gradient(135deg, #00c8ff 0%, #7b2dff 100%);
  --gradient-dark: linear-gradient(135deg, #05080f 0%, #0a0e17 100%);
}

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

body {
  font-family: var(--font-main);
  background: var(--darker);
  color: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Calming Background Layers */
.particle-network {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: 
    radial-gradient(circle at 20% 80%, rgba(123, 45, 255, 0.08) 0%, transparent 65%),
    radial-gradient(circle at 80% 20%, rgba(0, 200, 255, 0.08) 0%, transparent 65%),
    radial-gradient(circle at 40% 40%, rgba(255, 45, 123, 0.05) 0%, transparent 65%);
  opacity: 0.98;
}

.background-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: 
    radial-gradient(circle at 20% 80%, rgba(123, 45, 255, 0.08) 0%, transparent 85%),
    radial-gradient(circle at 80% 20%, rgba(0, 200, 255, 0.08) 0%, transparent 85%),
    radial-gradient(circle at 40% 40%, rgba(255, 45, 123, 0.05) 0%, transparent 85%);
}

/* Subtle Glow Elements */
.glow-element {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  z-index: -1;
  pointer-events: none;
}

.glow-center {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: gentle-pulse 20s ease-in-out infinite;
}

.glow-corner-1 {
  width: 300px;
  height: 300px;
  background: var(--secondary);
  top: -100px;
  left: -100px;
  animation: gentle-float 25s ease-in-out infinite;
}

.glow-corner-2 {
  width: 250px;
  height: 250px;
  background: var(--accent);
  bottom: -80px;
  right: -80px;
  animation: gentle-float 30s ease-in-out infinite reverse;
}

@keyframes gentle-pulse {
  0%, 100% { opacity: 0.08; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.15; transform: translate(-50%, -50%) scale(1.05); }
}

@keyframes gentle-float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(20px, 20px) rotate(120deg); }
  66% { transform: translate(-15px, 15px) rotate(240deg); }
}

/* Hero Section */
.hero-container {
  position: relative;
  padding: 6rem 2rem 4rem;
  background: var(--gradient-dark);
  overflow: hidden;
  min-height: 85vh;
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-text {
  padding-right: 2rem;
}

.hero-badge {
  display: inline-block;
  background: rgba(0, 200, 255, 0.1);
  border: 1px solid rgba(0, 200, 255, 0.3);
  color: var(--primary);
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--light) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--soft-gray);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.btn-primary, .btn-secondary {
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

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

.btn-secondary:hover {
  background: rgba(0, 200, 255, 0.1);
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  height: 400px;
  background: linear-gradient(45deg, rgba(0, 200, 255, 0.1), rgba(123, 45, 255, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
}

.medical-visual {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.visual-icon {
  font-size: 4rem;
  color: var(--primary);
  margin-bottom: 1rem;
  opacity: 0.8;
}

.visual-label {
  font-size: 1.2rem;
  color: var(--light);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.visual-description {
  color: var(--soft-gray);
  font-size: 0.9rem;
  max-width: 300px;
}

/* Lead Magnet Sidebar */
.lead-magnet-sidebar {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  width: 320px;
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 200, 255, 0.2);
  border-radius: var(--border-radius);
  padding: 2rem;
  z-index: 100;
  box-shadow: var(--shadow-medium);
  display: none;
}

.lead-magnet-sidebar.active {
  display: block;
}

.lead-magnet-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.lead-magnet-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.lead-magnet-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--light);
  margin-bottom: 0.5rem;
}

.lead-magnet-subtitle {
  color: var(--soft-gray);
  font-size: 0.9rem;
}

.lead-magnet-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.form-group label {
  font-size: 0.9rem;
  color: var(--soft-gray);
  font-weight: 500;
}

.form-group input {
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
  color: var(--light);
  font-size: 0.9rem;
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(0, 200, 255, 0.05);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin: 1rem 0;
}

.form-checkbox input {
  margin-top: 0.25rem;
}

.form-checkbox label {
  font-size: 0.85rem;
  color: var(--soft-gray);
  line-height: 1.4;
}

.download-btn {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow);
}

.close-sidebar {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--soft-gray);
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition);
}

.close-sidebar:hover {
  color: var(--primary);
}

/* Main Content Container */
.main-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 4rem 2rem;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-subtitle {
  color: var(--primary);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--light);
  margin-bottom: 1rem;
}

.section-description {
  color: var(--soft-gray);
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Treatment Approach Grid */
.treatment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.treatment-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.treatment-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 200, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.treatment-card.core {
  border-color: var(--primary);
  background: linear-gradient(135deg, 
    rgba(0, 200, 255, 0.05) 0%, 
    rgba(123, 45, 255, 0.05) 100%);
}

.treatment-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.treatment-card.core .treatment-icon {
  color: var(--primary);
  animation: gentle-pulse 3s infinite;
}

.treatment-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--light);
  margin-bottom: 1rem;
}

.treatment-card p {
  color: var(--soft-gray);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.treatment-features {
  list-style: none;
  margin-top: 1.5rem;
}

.treatment-features li {
  color: var(--soft-gray);
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
  position: relative;
}

.treatment-features li:before {
  content: "•";
  color: var(--primary);
  position: absolute;
  left: 0;
}

/* Protocol Card Button Group */
.protocol-card-btn-group {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.protocol-card-btn {
  background-color: #1e4a7a;
  color: white;
  border: none;
  border-radius: 2rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 10px rgba(30, 74, 122, 0.2);
  border: 1px solid transparent;
  text-decoration: none;
  display: inline-block;
}

.protocol-card-btn:hover {
  background-color: #0f3457;
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(30, 74, 122, 0.3);
}

.protocol-card-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(30, 74, 122, 0.2);
}

/* Rationale Button Group */
.rationale-btn-group {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.rationale-btn {
  background-color: #ffffff;
  color: #1e4a7a;
  border: 2px solid #1e4a7a;
  border-radius: 2.5rem;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(30, 74, 122, 0.1);
  flex: 0 1 auto;
  text-decoration: none;
  display: inline-block;
}

.rationale-btn:hover {
  background-color: #1e4a7a;
  color: white;
  border-color: #1e4a7a;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(30, 74, 122, 0.25);
}

.rationale-btn:active {
  transform: translateY(0);
}

/* Download Card Styles */
.download-card {
  background: #f9fcff;
  border: 1px solid #dde5ed;
  border-radius: 24px;
  padding: 1.5rem 1.2rem 1.2rem;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  margin-top: 2rem;
}

.download-card:hover {
  border-color: #a6c0d9;
  background: #ffffff;
  box-shadow: 0 12px 22px -10px rgba(18, 67, 112, 0.2);
  transform: translateY(-3px);
}

.file-icon {
  font-size: 2.4rem;
  margin-bottom: 0.7rem;
}

.file-title {
  font-weight: 650;
  font-size: 1.25rem;
  color: #0f2f44;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.file-title .ext {
  background: #d9e2ec;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 30px;
  color: #1d4460;
}

.file-desc {
  font-size: 0.9rem;
  color: #4f6579;
  margin: 0.5rem 0 1.1rem;
  flex: 1;
}

.file-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px dashed #c7d6e5;
  padding-top: 0.8rem;
}

.size-badge {
  background: #dde9f3;
  padding: 0.2rem 0.7rem;
  border-radius: 40px;
  font-size: 0.75rem;
  color: #15445f;
}

.download-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #1f4e79;
  color: white;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.55rem 1.2rem;
  border-radius: 40px;
  transition: 0.15s ease;
  border: 1px solid #163a57;
  box-shadow: 0 4px 6px -2px rgba(27, 66, 99, 0.3);
  cursor: pointer;
}

.download-link:hover {
  background: #0f3b5c;
  border-color: #0b2a40;
}

/* Clinical Implementation Button Group */
.clinical-implementation-btn-group {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
  width: 100%;
  max-width: 800px;
}

.clinical-implementation-btn-group .protocol-card-btn {
  margin-top: 0;
  flex: 1 1 auto;
  min-width: 120px;
  text-align: center;
}

/* Clinical Process Section */
.clinical-process {
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--border-radius);
  padding: 4rem;
  margin: 4rem 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.process-step {
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
}

.process-step h4 {
  font-size: 1.25rem;
  color: var(--light);
  margin-bottom: 1rem;
}

.process-step p {
  color: var(--soft-gray);
  line-height: 1.6;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, 
    rgba(0, 200, 255, 0.1) 0%, 
    rgba(123, 45, 255, 0.1) 100%);
  border-radius: var(--border-radius);
  padding: 4rem;
  text-align: center;
  margin: 4rem 0;
  border: 1px solid rgba(0, 200, 255, 0.2);
}

.cta-banner h2 {
  font-size: 2.5rem;
  color: var(--light);
  margin-bottom: 1.5rem;
}

.cta-banner p {
  color: var(--soft-gray);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

/* Delightful Divider */
.content-divider {
  border: none;
  height: 2px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(0, 200, 255, 0.3) 25%, 
    rgba(123, 45, 255, 0.3) 50%, 
    rgba(0, 200, 255, 0.3) 75%, 
    transparent 100%);
  margin: 3rem auto;
  width: 80%;
  position: relative;
}

.content-divider::before,
.content-divider::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  animation: subtle-sparkle 4s infinite;
}

.content-divider::before {
  left: 25%;
  animation-delay: 0.5s;
}

.content-divider::after {
  right: 25%;
  animation-delay: 1.5s;
}

@keyframes subtle-sparkle {
  0%, 100% { opacity: 0.5; transform: translateY(-50%) scale(1); }
  50% { opacity: 1; transform: translateY(-50%) scale(1.2); }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-text {
    padding-right: 0;
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.75rem;
  }
  
  .lead-magnet-sidebar {
    position: relative;
    top: auto;
    right: auto;
    transform: none;
    width: 100%;
    max-width: 400px;
    margin: 2rem auto;
    display: block;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .treatment-grid {
    grid-template-columns: 1fr;
  }
  
  .clinical-process {
    padding: 2rem;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
  }
  
  .cta-banner {
    padding: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .protocol-card-btn-group {
    flex-direction: column;
  }
  
  .protocol-card-btn-group .protocol-card-btn {
    width: 100%;
  }
  
  .rationale-btn-group {
    flex-direction: column;
  }
  
  .rationale-btn {
    width: 100%;
    text-align: center;
  }
  
  .clinical-implementation-btn-group {
    flex-direction: column;
    max-width: 100%;
  }
  
  .clinical-implementation-btn-group .protocol-card-btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .rationale-btn {
    padding: 0.75rem 1.5rem;
  }
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Print Styles */
@media print {
  .protocol-card-btn,
  .rationale-btn,
  .download-link,
  .clinical-implementation-btn-group .protocol-card-btn {
    display: none;
  }
}