/* GitHub Primer System Colors */
:root {
  --color-bg-default: #0d1117;
  --color-bg-subtle: #161b22;
  --color-bg-inset: #010409;
  --color-border-default: #30363d;
  --color-border-muted: #21262d;
  --color-fg-default: #e6edf3;
  --color-fg-muted: #7d8590;
  --color-fg-accent: #2f81f7;
  --color-accent-fg: #58a6ff;
  --color-btn-primary-bg: #238636;
  --color-btn-primary-hover-bg: #2ea44f;
  --color-btn-primary-border: rgba(240, 246, 252, 0.1);
  --color-btn-bg: #21262d;
  --color-btn-hover-bg: #30363d;
  --color-btn-border: #30363d;
  --color-success-fg: #3fb950;
  --color-danger-fg: #f85149;
  
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

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

body {
  background-color: var(--color-bg-default);
  color: var(--color-fg-default);
  font-family: var(--font-stack);
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent-fg);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header & Navigation */
header {
  background-color: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border-default);
  padding: 16px 32px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-group svg {
  fill: var(--color-fg-default);
}

.logo-text {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

nav a {
  color: var(--color-fg-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--color-fg-default);
  text-decoration: none;
}

nav a.active {
  color: var(--color-fg-default);
  font-weight: 600;
}

.btn-header {
  background-color: var(--color-btn-primary-bg);
  color: #ffffff;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--color-btn-primary-border);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn-header:hover {
  background-color: var(--color-btn-primary-hover-bg);
  text-decoration: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 80px 24px;
  background: radial-gradient(circle at top, rgba(31, 111, 235, 0.1) 0%, transparent 60%);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(56, 139, 253, 0.15);
  color: var(--color-accent-fg);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid rgba(56, 139, 253, 0.3);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 20px;
  color: var(--color-fg-muted);
  max-width: 720px;
  margin: 0 auto 32px auto;
}

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
}

.btn-primary {
  background-color: var(--color-btn-primary-bg);
  color: #ffffff !important;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--color-btn-primary-border);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-primary:hover {
  background-color: var(--color-btn-primary-hover-bg);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-btn-bg);
  color: var(--color-fg-default) !important;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--color-btn-border);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-secondary:hover {
  background-color: var(--color-btn-hover-bg);
  text-decoration: none;
  transform: translateY(-1px);
}

/* Interactive Demo Showcase */
.showcase-wrapper {
  max-width: 1000px;
  margin: 0 auto;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border-default);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.window-bar {
  background-color: var(--color-bg-inset);
  border-bottom: 1px solid var(--color-border-default);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.window-dots {
  display: flex;
  gap: 8px;
}

.window-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-border-default);
}
.window-dot.red { background-color: #ff5f56; }
.window-dot.yellow { background-color: #ffbd2e; }
.window-dot.green { background-color: #27c93f; }

.window-title {
  font-size: 13px;
  color: var(--color-fg-muted);
  font-family: monospace;
}

.mock-github {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 520px;
  background-color: var(--color-bg-default);
}

@media (max-width: 768px) {
  .mock-github {
    grid-template-columns: 1fr;
  }
  .mock-github .sidebar {
    display: none;
  }
}

/* Sidebar mock */
.sidebar {
  border-right: 1px solid var(--color-border-default);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.avatar-placeholder {
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1f6feb, #238636);
  margin-bottom: 16px;
  border: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: #fff;
}

.profile-name {
  font-size: 20px;
  font-weight: 600;
}

.profile-username {
  font-size: 16px;
  color: var(--color-fg-muted);
  margin-top: -12px;
  margin-bottom: 8px;
}

.profile-bio {
  font-size: 14px;
  color: var(--color-fg-default);
}

.injected-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.action-btn-injected {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  width: 100%;
}

.action-btn-injected.message {
  background-color: var(--color-btn-primary-bg);
  color: #fff;
  border: 1px solid var(--color-btn-primary-border);
}
.action-btn-injected.message:hover {
  background-color: var(--color-btn-primary-hover-bg);
}

.action-btn-injected.inbox {
  background-color: #1f6feb;
  color: #fff;
  border: 1px solid rgba(240,246,252,0.1);
  position: relative;
}
.action-btn-injected.inbox:hover {
  background-color: #388bfd;
}

.badge-count {
  background-color: var(--color-danger-fg);
  color: white;
  border-radius: 10px;
  padding: 1px 6px;
  font-size: 11px;
  font-weight: 600;
}

/* Chat container mock */
.chat-area {
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--color-bg-default);
}

.chat-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border-default);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-message-row {
  display: flex;
  width: 100%;
}

.chat-message-row.right {
  justify-content: flex-end;
}

.chat-message-bubble {
  max-width: 70%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  position: relative;
}

.chat-message-row.left .chat-message-bubble {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border-default);
  border-bottom-left-radius: 2px;
}

.chat-message-row.right .chat-message-bubble {
  background-color: var(--color-fg-accent);
  color: white;
  border-bottom-right-radius: 2px;
}

.bubble-meta {
  font-size: 11px;
  color: var(--color-fg-muted);
  margin-bottom: 4px;
}
.chat-message-row.right .bubble-meta {
  color: rgba(255, 255, 255, 0.7);
}

.bubble-text {
  word-break: break-word;
}

.chat-input-area {
  padding: 16px;
  border-top: 1px solid var(--color-border-default);
  display: flex;
  gap: 12px;
}

.chat-input-area input {
  flex: 1;
  background-color: var(--color-bg-inset);
  border: 1px solid var(--color-border-default);
  border-radius: 6px;
  color: var(--color-fg-default);
  padding: 8px 12px;
  font-size: 14px;
  outline: none;
}

.chat-input-area input:focus {
  border-color: var(--color-fg-accent);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.3);
}

.chat-send-btn {
  background-color: var(--color-btn-primary-bg);
  border: 1px solid var(--color-btn-primary-border);
  border-radius: 6px;
  color: white;
  padding: 8px 16px;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
}
.chat-send-btn:hover {
  background-color: var(--color-btn-primary-hover-bg);
}



/* Features Grid */
.features-section {
  padding-top: 64px;
  border-top: 1px solid var(--color-border-muted);
}

.section-title {
  text-align: center;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border-default);
  padding: 32px;
  border-radius: 8px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-fg-accent);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background-color: rgba(47, 129, 247, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-accent-fg);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-fg-muted);
  font-size: 15px;
}

/* Security Architecture Section */
.security-section {
  padding: 80px 24px;
  margin-top: 64px;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border-default);
  border-radius: 12px;
}

.security-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 992px) {
  .security-content {
    grid-template-columns: 1fr;
  }
}

.security-text h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 24px;
}

.security-text p {
  color: var(--color-fg-muted);
  margin-bottom: 20px;
  font-size: 16px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tech-tag {
  background-color: var(--color-bg-default);
  border: 1px solid var(--color-border-default);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  font-family: monospace;
}

.security-flow {
  background-color: var(--color-bg-default);
  border: 1px solid var(--color-border-default);
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.flow-step {
  display: flex;
  gap: 16px;
  position: relative;
}

.flow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 12px;
  top: 24px;
  bottom: -24px;
  width: 2px;
  background-color: var(--color-border-default);
}

.flow-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background-color: var(--color-fg-accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  z-index: 1;
}

.flow-details h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.flow-details p {
  font-size: 13px;
  color: var(--color-fg-muted);
}

/* Privacy Policy Layout (Markdown document style) */
.markdown-body {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border-default);
  border-radius: 12px;
  padding: 48px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

@media (max-width: 576px) {
  .markdown-body {
    padding: 24px;
  }
}

.markdown-body h1 {
  font-size: 32px;
  font-weight: 700;
  border-bottom: 1px solid var(--color-border-default);
  padding-bottom: 12px;
  margin-bottom: 24px;
}

.markdown-body h2 {
  font-size: 22px;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border-default);
  padding-bottom: 8px;
  margin-top: 32px;
  margin-bottom: 16px;
}

.markdown-body p {
  margin-bottom: 16px;
  color: var(--color-fg-default);
  line-height: 1.6;
}

.markdown-body ul, .markdown-body ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.markdown-body li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.markdown-body blockquote {
  padding: 0 16px;
  color: var(--color-fg-muted);
  border-left: 4px solid var(--color-border-default);
  margin-bottom: 16px;
}

.last-updated {
  font-size: 14px;
  color: var(--color-fg-muted);
  margin-bottom: 32px;
  font-style: italic;
}

/* Footer styling */
footer {
  border-top: 1px solid var(--color-border-default);
  padding: 40px 24px;
  margin-top: 80px;
  background-color: var(--color-bg-inset);
  color: var(--color-fg-muted);
  font-size: 14px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--color-fg-muted);
}

.footer-links a:hover {
  color: var(--color-fg-default);
}

/* Extension Mock Alert Popup */
.alert-popup {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border-default);
  border-left: 4px solid var(--color-success-fg);
  border-radius: 8px;
  padding: 16px 24px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 16px;
  transform: translateY(120%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.alert-popup.show {
  transform: translateY(0);
}

.alert-content h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.alert-content p {
  font-size: 12px;
  color: var(--color-fg-muted);
}

.alert-close {
  background: none;
  border: none;
  color: var(--color-fg-muted);
  cursor: pointer;
  font-size: 16px;
}
.alert-close:hover {
  color: var(--color-fg-default);
}