/* ================================================
   Hoxy AI - Modern Design System (Linear-inspired)
   ================================================ */

/* ===== CSS Variables ===== */
:root {
  /* Primary Colors - Linear-inspired palette */
  --primary: #5E6AD2;
  --primary-light: #7B83EB;
  --primary-dark: #4752C4;
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  /* Neutral Colors */
  --background: #0A0B0E;
  --surface: #16181D;
  --surface-light: #1C1F26;
  --surface-lighter: #25282F;
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.04);
  
  /* Text Colors */
  --text-primary: #FFFFFF;
  --text-secondary: #A8A9B4;
  --text-tertiary: #6B6D76;
  --text-accent: #5E6AD2;
  
  /* Semantic Colors */
  --success: #4ADE80;
  --warning: #FBBF24;
  --error: #F87171;
  --info: #60A5FA;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-success: linear-gradient(135deg, #4ADE80 0%, #22C55E 100%);
  --gradient-dark: linear-gradient(180deg, #0A0B0E 0%, #16181D 100%);
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(94, 106, 210, 0.2) 0%, transparent 70%);
  
  /* Effects */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(94, 106, 210, 0.15);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index */
  --z-base: 1;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-modal: 30;
  --z-tooltip: 40;
  --z-notification: 50;
}

/* ===== Global Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--background);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Background with gradient mesh */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(94, 106, 210, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(102, 126, 234, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

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 {
  color: var(--text-secondary);
  line-height: 1.7;
}

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

a:hover {
  color: var(--primary-light);
}

/* ===== Container ===== */
.container {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Header Navigation ===== */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: rgba(10, 11, 14, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.header-nav.scrolled {
  background: rgba(10, 11, 14, 0.95);
  box-shadow: var(--shadow-lg);
}

.main-nav {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-link {
  padding: var(--spacing-xs) var(--spacing-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  border-radius: var(--radius-md);
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  padding-top: 64px;
  padding-bottom: var(--spacing-2xl);
}

/* ===== Hero Section ===== */
.service-header {
  padding: var(--spacing-2xl) var(--spacing-lg);
  text-align: center;
  position: relative;
  margin-bottom: var(--spacing-xl);
}

.service-logo {
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out;
}

.service-logo img {
  height: 80px;
  width: auto;
  filter: brightness(0) invert(1);
}

.service-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

/* ===== Proposition Input Section ===== */
.proposition-input-section {
  max-width: 800px;
  margin: 0 auto var(--spacing-2xl);
  padding: 0 var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.input-container-large {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.input-container-large::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(94, 106, 210, 0.5), 
    transparent
  );
  animation: shimmer 3s infinite;
}

.input-wrapper-large {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.input-wrapper-large textarea {
  width: 100%;
  min-height: 120px;
  padding: var(--spacing-md);
  background: var(--surface-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  resize: vertical;
  transition: all var(--transition-base);
  outline: none;
}

.input-wrapper-large textarea:focus {
  border-color: var(--primary);
  background: var(--surface-lighter);
  box-shadow: 0 0 0 3px rgba(94, 106, 210, 0.1);
}

.input-wrapper-large textarea::placeholder {
  color: var(--text-tertiary);
}

/* ===== Analysis Buttons ===== */
.analysis-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.analyze-btn-large {
  position: relative;
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.scientific-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.scientific-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.philosophical-btn {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(240, 147, 251, 0.3);
}

.philosophical-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(240, 147, 251, 0.4);
}

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

.analyze-btn-large:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Button ripple effect */
.analyze-btn-large::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.analyze-btn-large:active::after {
  width: 300px;
  height: 300px;
}

/* ===== Loading Animation ===== */
.loading-animation {
  display: none;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.ai-thinking {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.brain-container {
  width: 24px;
  height: 24px;
  position: relative;
}

.brain {
  width: 100%;
  height: 100%;
  position: relative;
  animation: pulse 2s infinite;
}

.neuron {
  position: absolute;
  width: 4px;
  height: 4px;
  background: white;
  border-radius: 50%;
  animation: float 3s infinite;
}

.neuron:nth-child(1) { top: 20%; left: 20%; animation-delay: 0s; }
.neuron:nth-child(2) { top: 20%; right: 20%; animation-delay: 0.5s; }
.neuron:nth-child(3) { bottom: 20%; left: 20%; animation-delay: 1s; }
.neuron:nth-child(4) { bottom: 20%; right: 20%; animation-delay: 1.5s; }

.thinking-text {
  color: white;
  font-size: 0.875rem;
}

.thinking-dot {
  display: inline-block;
  animation: blink 1.4s infinite;
}

.thinking-dot:nth-child(2) { animation-delay: 0.2s; }
.thinking-dot:nth-child(3) { animation-delay: 0.4s; }
.thinking-dot:nth-child(4) { animation-delay: 0.6s; }

/* ===== Recommendations Grid ===== */
.proposition-recommendations {
  max-width: 1280px;
  margin: 0 auto var(--spacing-2xl);
  padding: 0 var(--spacing-lg);
}

.recommendations-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.recommendations-header h3 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.recommendations-header p {
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.recommendations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.recommendation-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.recommendation-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.recommendation-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-xl), 0 0 30px rgba(94, 106, 210, 0.2);
}

.recommendation-card:hover::before {
  opacity: 1;
}

.recommendation-rank {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: white;
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.category-badge {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.category-badge.technology {
  background: rgba(94, 106, 210, 0.2);
  color: var(--primary-light);
}

.category-badge.medical {
  background: rgba(74, 222, 128, 0.2);
  color: var(--success);
}

.category-badge.environment {
  background: rgba(96, 165, 250, 0.2);
  color: var(--info);
}

.category-badge.education {
  background: rgba(251, 191, 36, 0.2);
  color: var(--warning);
}

.category-badge.economy {
  background: rgba(248, 113, 113, 0.2);
  color: var(--error);
}

.trend-indicator {
  font-size: 1.25rem;
}

.card-content {
  position: relative;
  z-index: 1;
  margin-bottom: var(--spacing-md);
}

.card-content h4 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  line-height: 1.4;
}

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

.recommendation-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.recommendation-count {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.analyze-recommendation-btn {
  padding: 8px 16px;
  background: rgba(94, 106, 210, 0.1);
  border: 1px solid var(--primary);
  border-radius: var(--radius-md);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.analyze-recommendation-btn:hover {
  background: var(--primary);
  color: white;
  transform: scale(1.05);
}

/* ===== Result Section ===== */
.result-section {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out;
}

.result-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.result-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  animation: bounce 0.6s ease-out;
}

.result-header h3 {
  font-size: 1.75rem;
  color: var(--text-primary);
}

.result-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(10px);
}

.truth-score-container {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.score-display {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: var(--spacing-lg);
}

.score-number {
  font-size: 4rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.score-percent {
  font-size: 2rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.truth-bar-container {
  max-width: 400px;
  margin: 0 auto var(--spacing-md);
}

.truth-bar {
  position: relative;
  height: 8px;
  background: var(--surface-lighter);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.bar-background {
  position: absolute;
  inset: 0;
  background: var(--surface-lighter);
}

.bar-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.bar-indicator {
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: left 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.bar-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

.score-label {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.tier-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.tier-badge {
  padding: 8px 20px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  font-weight: 600;
  color: white;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.analysis-content {
  padding: var(--spacing-lg);
  background: var(--surface-light);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.95rem;
  max-height: 500px;
  overflow-y: auto;
}

.analysis-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.analysis-h3 {
  display: block;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: 600;
}

/* ===== Footer ===== */
.footer {
  margin-top: auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.8;
}

.business-info {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.business-details {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.company-info {
  margin-bottom: var(--spacing-sm);
}

.separator {
  margin: 0 var(--spacing-xs);
  opacity: 0.5;
}

.copyright {
  margin-top: var(--spacing-sm);
  color: var(--text-tertiary);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(10px, -10px); }
  50% { transform: translate(-10px, 10px); }
  75% { transform: translate(10px, 10px); }
}

@keyframes blink {
  0%, 60%, 100% { opacity: 1; }
  30% { opacity: 0; }
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface);
}

::-webkit-scrollbar-thumb {
  background: var(--surface-lighter);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }
  
  .analysis-buttons {
    grid-template-columns: 1fr;
  }
  
  .recommendations-grid {
    grid-template-columns: 1fr;
  }
  
  .score-number {
    font-size: 3rem;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .nav-link {
    display: none;
  }
  
  .main-nav {
    padding: 0 var(--spacing-md);
  }
  
  .proposition-input-section,
  .result-section {
    padding: 0 var(--spacing-md);
  }
}