:root {
  --bg-primary: #0a0b14;
  --bg-secondary: #1a1b26;
  --bg-tertiary: #24283b;
  --bg-card: #1f2335;
  --text-primary: #c0caf5;
  --text-secondary: #9aa5ce;
  --text-muted: #565f89;
  --accent-primary: #7aa2f7;
  --accent-secondary: #bb9af7;
  --success: #9ece6a;
  --warning: #e0af68;
  --danger: #f7768e;
  --border: #292e42;
  --shadow: rgba(0, 0, 0, 0.3);
  --gradient-primary: linear-gradient(135deg, #7aa2f7 0%, #bb9af7 100%);
  --gradient-success: linear-gradient(135deg, #9ece6a 0%, #73daca 100%);
  --gradient-danger: linear-gradient(135deg, #f7768e 0%, #ff9e64 100%);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Animated background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(122, 162, 247, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(187, 154, 247, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(158, 206, 106, 0.05) 0%, transparent 50%);
  z-index: -1;
  animation: backgroundShift 20s ease-in-out infinite;
}

@keyframes backgroundShift {
  0%, 100% { transform: translateX(0) translateY(0); }
  25% { transform: translateX(-20px) translateY(-10px); }
  50% { transform: translateX(20px) translateY(10px); }
  75% { transform: translateX(-10px) translateY(20px); }
}

.container {
  margin-top: 2rem;
  max-width: 100%;
  display: flex;
  gap: 6rem;
  /* margin: 0 auto; */
  padding: 1rem;
  padding-left: 3rem;
  min-height: 100vh;
}

/* Page grid layout */
.page-grid {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.left-rail {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  /* margin-right: rem; */
  position: sticky;
  top: 4rem;
  align-self: start;
}

.right-content {
  min-width: 0; /* prevents overflow in grid children */
}

/* Sidebar cards */
.rail-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem 1.2rem;
  box-shadow: 0 8px 24px var(--shadow);
  backdrop-filter: blur(10px);
  margin-bottom: 1rem;
}

.rail-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: #F2AA45;
  margin-bottom: 0.6rem;
  /* font-style: italic; */
}

.rail-text {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 0.95rem;
  /* font-style: italic; */
}

/* Numbered steps with theme bullets */
.rail-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.rail-steps li {
  position: relative;
  counter-increment: step;
  padding-left: 2.2rem;
  margin: 0.75rem 0;
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 0.95rem;
}

.rail-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.1rem;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--bg-primary);
  background: var(--gradient-primary);
  box-shadow: 0 4px 14px rgba(122, 162, 247, 0.35);
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.header::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.logo-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 32px rgba(122, 162, 247, 0.3);
  animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
}

.title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-weight: 400;
}

/* Main content */
.main-content {
  display: grid;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

/* Card component */
.card {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px var(--shadow);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0.5;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 48px var(--shadow);
  border-color: rgba(122, 162, 247, 0.3);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title::before {
  content: '✨';
  font-size: 1.2rem;
}

/* Button styles */
.button-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.btn {
  padding: 1rem 1.5rem;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: inherit;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-real {
  background: var(--gradient-success);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(158, 206, 106, 0.3);
}

.btn-real:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(158, 206, 106, 0.4);
}

.btn-fake {
  background: var(--gradient-danger);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(247, 118, 142, 0.3);
}

.btn-fake:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(247, 118, 142, 0.4);
}

.btn-check {
  background: var(--gradient-primary);
  color: white;
  padding: 1.2rem 2rem;
  font-size: 1.1rem;
  border-radius: 16px;
  box-shadow: 0 6px 24px rgba(122, 162, 247, 0.3);
  width: 100%;
  margin-top: 1rem;
}

.btn-check:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(122, 162, 247, 0.4);
}

.btn-check:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Textarea */
.input-group {
  margin-bottom: 1rem;
}

.input-label {
  display: block;
  margin-bottom: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.textarea {
  width: 100%;
  min-height: 200px;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border);
  border-radius: 16px;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.6;
  resize: vertical;
  transition: all 0.3s ease;
}

.textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(122, 162, 247, 0.1);
  background: var(--bg-tertiary);
}

.textarea::placeholder {
  color: var(--text-muted);
}

/* Results */
.result-section {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
  pointer-events: none;
}

.result-section.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.result-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.5rem;
  border-radius: 16px;
  font-size: 1.2rem;
  font-weight: 600;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.result-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

.result-real {
  background: linear-gradient(135deg, rgba(158, 206, 106, 0.2) 0%, rgba(115, 218, 202, 0.2) 100%);
  border: 2px solid rgba(158, 206, 106, 0.3);
  color: var(--success);
}

.result-fake {
  background: linear-gradient(135deg, rgba(247, 118, 142, 0.2) 0%, rgba(255, 158, 100, 0.2) 100%);
  border: 2px solid rgba(247, 118, 142, 0.3);
  color: var(--danger);
}

.result-icon {
  font-size: 2rem;
  animation: bounce 1s ease-in-out;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

.confidence {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-left: 0.5rem;
}

/* Loading animation */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--text-secondary);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top: 2px solid var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  .button-group {
    grid-template-columns: 1fr;
  }
  
  .title {
    font-size: 2rem;
  }
  
  .card {
    padding: 1.5rem;
  }
}

/* Responsive: stack on tablet/mobile */
@media (max-width: 1024px) {
  .page-grid {
    grid-template-columns: 1fr;
  }
  .left-rail {
    position: relative;
    top: 0;
    order: 2;
  }
  .right-content {
    order: 1;
  }
}

@media (max-width: 480px) {
  .logo-icon {
    width: 50px;
    height: 50px;
    font-size: 24px;
  }
  
  .title {
    font-size: 1.8rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
  
  .card {
    padding: 1rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles */
.btn:focus-visible,
.textarea:focus-visible,
.rail-card:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.corrected-news-card {
  background: #1e1e2e;        /* dark card background */
  border: 1px solid #3a3a55;  /* subtle border */
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin-top: 1rem;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  animation: fadeIn 0.4s ease;
}

.corrected-title {
  font-size: 1.1rem;
  color: #4ade80; /* green accent */
  margin-bottom: 0.6rem;
  font-weight: 600;
}

.corrected-body {
  font-size: 0.95rem;
  line-height: 1.5;
  color: #e4e4e7;
}
  
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

body.chrome-extension-body {
  /* Define the fixed size of the extension window */
  width: 600px;
  height: 800px;
  /* Allow vertical scrolling if content overflows the fixed height */
  overflow-y: auto;
  overflow-x: hidden;
  /* Ensure the background animation is contained */
  position: relative;
}

body.chrome-extension-body .container {
  /* Override layout for a simpler, single-column view */
  display: block;
  /* Reduce padding to maximize space */
  padding: 1.5rem;
  margin-top: 1rem;
  /* Remove flex properties that are no longer needed */
  gap: 0;
  min-height: auto; /* Not needed for a fixed-height container */
}

/* Since the extension is narrow, the @media (max-width: 1024px) rule
   already stacks the columns. We just need to adjust spacing. */
body.chrome-extension-body .page-grid {
  gap: 1.5rem; /* Reduce space between the stacked main content and sidebar */
}

body.chrome-extension-body .left-rail {
  /* Disable sticky positioning which is irrelevant in a small, scrollable popup */
  position: static;
  top: auto;
}

body.chrome-extension-body .header {
  margin-bottom: 2rem; /* Tighter header margin */
}

body.chrome-extension-body .textarea {
  min-height: 150px; /* Make the textarea a bit smaller to save vertical space */
  padding: 1rem;
}

body.chrome-extension-body .card {
  padding: 1.5rem; /* Slightly reduced card padding */
}