/* ========================================
   QI3IX Unified Design System v2.0
   Enhanced with Dark Theme Components
   ======================================== */

/* ========================================
   COLOR SYSTEM
   ======================================== */
:root {
  /* Primary Brand Colors */
  --photon-blue: #2368FF;
  --quantum-teal: #00B7C3;
  --quantum-violet: #6C63FF;
  --deep-purple: #7C3AED;

  /* Accent Colors */
  --soft-gold: #F59E0B;
  --success-green: #10B981;
  --warning-amber: #F59E0B;
  --error-red: #DC2626;

  /* Neutral Palette */
  --midnight-graphite: #1A1F2E;
  --slate-dark: #0A0E1A;
  --slate-medium: #64748B;
  --slate-light: #E2E8F0;

  /* Text Colors */
  --text-dark: #1E293B;
  --text-medium: #64748B;
  --text-light: #94A3B8;
  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;

  /* Background Colors */
  --bg-light: #F8FAFC;
  --bg-white: #FFF;
  --bg-dark: #0A0E1A;
  --bg-card: #1A1F2E;
  --bg-hover: #252B3F;

  /* Border & Effects */
  --border-color: #E2E8F0;
  --border-dark: rgb(128 222 234 / 20%);
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 5%);
  --shadow-md: 0 4px 6px rgb(0 0 0 / 10%);
  --shadow-lg: 0 10px 15px rgb(0 0 0 / 10%);
  --shadow-xl: 0 20px 25px rgb(0 0 0 / 15%);

  /* Transitions */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--photon-blue), var(--quantum-violet));
  --gradient-teal: linear-gradient(135deg, var(--quantum-teal), var(--photon-blue));
  --gradient-purple: linear-gradient(135deg, var(--deep-purple), var(--quantum-violet));
  --gradient-gold: linear-gradient(135deg, var(--soft-gold), var(--warning-amber));
  --gradient-dark: linear-gradient(135deg, var(--slate-dark) 0%, #0F1419 100%);

  /* Dark Theme Specific */
  --qi3-teal: #80DEEA;
  --qi3-purple: #FF47E3;
  --qi3-cyan: #06B6D4;
  --qi3-amber: #F59E0B;
  --qi3-green: #10B981;
  --qi3-red: #DC2626;
  --qi3-blue: #0078D4;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Dark Theme Body */
body.dark-theme {
  background: var(--gradient-dark);
  color: var(--text-primary);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--midnight-graphite);
  margin-bottom: 1rem;
}

.dark-theme h1,
.dark-theme h2,
.dark-theme h3,
.dark-theme h4,
.dark-theme h5,
.dark-theme h6 {
  color: var(--text-primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

a {
  color: var(--photon-blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--quantum-violet);
}

.dark-theme a {
  color: var(--qi3-teal);
}

.dark-theme a:hover {
  color: var(--qi3-purple);
}

/* ========================================
   LAYOUT COMPONENTS
   ======================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container.narrow {
  max-width: 900px;
}

.container.wide {
  max-width: 1400px;
}

.content {
  padding: 3rem 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (width <= 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (width <= 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   HEADER STYLES
   ======================================== */
.header {
  padding: 4rem 2rem;
  text-align: center;
  background: var(--gradient-primary);
  color: white;
  position: relative;
  overflow: hidden;
}

.header.quantum-theme {
  background: var(--gradient-teal);
}

.header.purple-theme {
  background: var(--gradient-purple);
}

/* Dark Theme Header */
.header.dark-header {
  background: transparent;
  border-bottom: 2px solid var(--border-dark);
  margin-bottom: 3rem;
  padding-bottom: 2rem;
}

.header-icon {
  font-size: 4rem;
  background: var(--gradient-teal);
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  font-weight: 400;
}

.dark-theme .subtitle {
  color: var(--text-secondary);
}

/* ========================================
   CARD COMPONENTS
   ======================================== */
.card {
  background: white;
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* Dark Theme Cards */
.dark-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition-base);
}

.dark-card:hover {
  background: var(--bg-hover);
  border-color: var(--qi3-teal);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgb(128 222 234 / 15%);
}

.dark-theme .card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
}

.dark-theme .card:hover {
  background: var(--bg-hover);
  border-color: var(--qi3-purple);
  box-shadow: 0 8px 30px rgb(255 71 227 / 30%);
}

/* Card Accents */
.card.accent-top {
  border-top: 4px solid var(--photon-blue);
}

.card.accent-top.green-card {
  border-top-color: var(--success-green);
}

.card.accent-top.purple-card {
  border-top-color: var(--quantum-violet);
}

.card.accent-top.gold-card {
  border-top-color: var(--soft-gold);
}

/* ========================================
   BUTTON STYLES
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-base);
  border: none;
  text-decoration: none;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgb(35 104 255 / 30%);
}

.btn-secondary {
  background: white;
  color: var(--photon-blue);
  border: 2px solid var(--photon-blue);
}

.btn-secondary:hover {
  background: var(--photon-blue);
  color: white;
}

/* Dark Theme Buttons */
.dark-theme .btn-secondary {
  background: transparent;
  color: var(--qi3-teal);
  border: 1px solid var(--border-dark);
}

.dark-theme .btn-secondary:hover {
  background: rgb(128 222 234 / 10%);
  border-color: var(--qi3-teal);
}

.dark-theme .btn-primary {
  background: linear-gradient(135deg, var(--qi3-teal), var(--qi3-purple));
}

.dark-theme .btn-primary:hover {
  box-shadow: 0 4px 20px rgb(255 71 227 / 40%);
}

/* ========================================
   ICON COMPONENTS
   ======================================== */
.icon-box {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* ========================================
   BADGE COMPONENTS
   ======================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  background: var(--bg-light);
  color: var(--text-dark);
}

/* Status Badges */
.badge.status-active {
  background: rgb(16 185 129 / 10%);
  color: var(--success-green);
  border: 1px solid var(--success-green);
}

.badge.status-development {
  background: rgb(245 158 11 / 10%);
  color: var(--soft-gold);
  border: 1px solid var(--soft-gold);
}

.badge.status-planned {
  background: rgb(99 102 241 / 10%);
  color: var(--quantum-violet);
  border: 1px solid var(--quantum-violet);
}

.badge.badge-tier1 {
  background: rgb(245 158 11 / 20%);
  color: var(--qi3-amber);
}

.badge.badge-mcp {
  background: rgb(6 182 212 / 20%);
  color: var(--qi3-cyan);
}

/* ========================================
   SECTION COMPONENTS
   ======================================== */
.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dark-theme .section-title {
  background: linear-gradient(135deg, var(--qi3-teal), var(--qi3-purple));
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--text-medium);
  margin-bottom: 2rem;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-icon {
  font-size: 2rem;
}

/* ========================================
   FEATURE LIST
   ======================================== */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  color: var(--text-dark);
}

.feature-list li i {
  color: var(--success-green);
  font-size: 1.125rem;
}

.dark-theme .feature-list li {
  color: var(--text-secondary);
}

/* ========================================
   STATS & METRICS
   ======================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgb(255 71 227 / 20%);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--qi3-teal), var(--qi3-cyan));
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.metric-card {
  background: white;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  transition: var(--transition-base);
}

.metric-card:hover {
  border-color: var(--photon-blue);
  box-shadow: 0 8px 24px rgb(35 104 255 / 15%);
}

.metric-value {
  font-size: 3rem;
  font-weight: 800;
  color: var(--photon-blue);
}

.metric-label {
  font-size: 0.875rem;
  color: var(--text-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.5rem;
}

/* ========================================
   BREADCRUMB
   ======================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.breadcrumb a {
  color: var(--qi3-teal);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--qi3-purple);
}

/* ========================================
   AGENT/ITEM LIST
   ======================================== */
.agent-list {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.agent-item {
  background: rgb(128 222 234 / 5%);
  border: 1px solid var(--border-dark);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition-base);
}

.agent-item:hover {
  background: rgb(255 71 227 / 10%);
  border-color: var(--qi3-purple);
  transform: translateX(8px);
}

.agent-icon {
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--qi3-cyan), var(--qi3-teal));
}

.agent-info {
  flex: 1;
}

.agent-name {
  font-weight: 600;
  color: var(--qi3-teal);
  margin-bottom: 0.25rem;
}

.agent-role {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ========================================
   TIER CARDS (PRICING)
   ======================================== */
.tier-card {
  border: 2px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition-base);
  background: white;
}

.tier-card:hover {
  border-color: var(--photon-blue);
  box-shadow: 0 8px 24px rgb(35 104 255 / 15%);
}

.tier-recommended {
  border-color: var(--photon-blue);
  background: linear-gradient(135deg, rgb(35 104 255 / 5%), rgb(108 99 255 / 5%));
  position: relative;
}

.tier-recommended::before {
  content: 'RECOMMENDED';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--photon-blue);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.price-tag {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--midnight-graphite);
  margin: 1rem 0;
}

.price-period {
  font-size: 1rem;
  color: var(--text-medium);
  font-weight: 400;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  margin-top: 4rem;
  padding: 2rem;
  text-align: center;
  border-top: 2px solid var(--border-color);
  color: var(--text-medium);
}

.dark-theme .footer {
  border-top-color: var(--border-dark);
  color: var(--text-secondary);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-in;
}

.animate-slide-up {
  animation: slideUp 0.6s ease-out;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (width <= 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }

  .container {
    padding: 0 1rem;
  }

  .header {
    padding: 2rem 1rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}