/* ==============================================================================
   Hexo Butterfly Custom Stylesheet
   Created for a Premium, Tech-Focused Aesthetic
   ============================================================================== */

/* --- Import Google Fonts --- */
/* Outfit is imported in _config.butterfly.yml, we apply it here */
:root {
  --global-font: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
  --code-font: 'Fira Code', Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
  
  /* Light Mode Colors */
  --theme-main: #6366f1; /* Modern Indigo */
  --theme-main-hover: #4f46e5;
  --body-bg: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --shadow-light: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --nav-bg: rgba(255, 255, 255, 0.7);
  --nav-text: #0f172a;
  --border-color: #e2e8f0;

  /* Heatmap Colors */
  --heatmap-l0: #ebedf0;
  --heatmap-l1: #9be9a8;
  --heatmap-l2: #40c463;
  --heatmap-l3: #30a14e;
  --heatmap-l4: #216e39;
}

[data-theme="dark"] {
  /* Dark Mode Colors */
  --body-bg: #090d16; /* Deep Obsidian */
  --card-bg: #111827; /* Dark Grey/Blue */
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --shadow-light: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.5);
  --nav-bg: rgba(17, 24, 39, 0.7);
  --nav-text: #f1f5f9;
  --border-color: #1f2937;

  /* Heatmap Colors */
  --heatmap-l0: #161b22;
  --heatmap-l1: #0e4429;
  --heatmap-l2: #006d32;
  --heatmap-l3: #26a641;
  --heatmap-l4: #39d353;
}

/* --- Global Typography Overrides --- */
body {
  font-family: var(--global-font) !important;
  background-color: var(--body-bg) !important;
  color: var(--text-main) !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--global-font) !important;
  color: var(--text-main) !important;
  font-weight: 700 !important;
  letter-spacing: -0.025em;
}

/* Header site title text readability */
#site-title, #site-subtitle {
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.75), 0 1px 3px rgba(0, 0, 0, 0.9) !important;
}

/* --- Navigation Bar Glassmorphism --- */
#nav {
  background: var(--nav-bg) !important;
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#nav a {
  color: var(--nav-text) !important;
  font-weight: 500;
  transition: color 0.2s ease;
}

#nav a:hover {
  color: var(--theme-main) !important;
}

/* --- Post Cards Layout & Animations --- */
#recent-posts > .recent-post-item {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color);
  border-radius: 16px !important;
  box-shadow: var(--shadow-light) !important;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

#recent-posts > .recent-post-item:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-hover) !important;
  border-color: var(--theme-main);
}

.recent-post-item .post_cover img {
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.recent-post-item:hover .post_cover img {
  transform: scale(1.05) !important;
}

/* --- Aside Widgets Styles --- */
.card-widget {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 16px !important;
  box-shadow: var(--shadow-light) !important;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.card-widget:hover {
  box-shadow: var(--shadow-hover) !important;
  border-color: var(--theme-main);
}

/* --- Typography & Post Content Readability --- */
#article-container {
  font-size: 16px !important;
  line-height: 1.8 !important;
  color: var(--text-main) !important;
}

#article-container p {
  margin-bottom: 1.5rem !important;
}

/* Custom rounded styling for note tags */
.note {
  border-radius: 8px !important;
  padding: 1rem 1.25rem !important;
  border-left-width: 4px !important;
}

/* --- Code Block Upgrades --- */
figure.highlight {
  background: #0d1117 !important; /* GitHub dark theme background */
  border: 1px solid var(--border-color) !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow-light) !important;
  overflow: hidden;
  margin: 1.5rem 0 !important;
}

/* Code block title bar / toolbar */
figure.highlight figcaption, 
figure.highlight .highlight-tools {
  background: #161b22 !important;
  border-bottom: 1px solid #21262d !important;
  color: #8b949e !important;
  font-family: var(--global-font) !important;
  font-size: 0.85rem !important;
}

/* Code fonts */
figure.highlight td.code pre, 
figure.highlight td.code,
code {
  font-family: var(--code-font) !important;
}

/* Copy button */
.copy-notice {
  font-family: var(--global-font) !important;
  border-radius: 6px !important;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 10px;
}

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

/* --- Custom Transition Animation --- */
#body-wrap {
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}