/* ==========================================================================
   test.parksangjun.art Design System Tokens & Utilities
   Theme: Kiln Stoneware & Celadon Glaze (Mobile-First Studio Experience)
   ========================================================================== */

:root {
  /* Core Palette Tokens */
  --bg-dark: #191e1b;
  --bg-surface: #222925;
  --bg-surface-elevated: #2b332e;
  --bg-porcelain: #f5f2eb;
  
  /* Accents */
  --celadon-sage: #7da490;
  --celadon-glow: rgba(125, 164, 144, 0.25);
  --terracotta-rust: #d47a5b;
  --terracotta-glow: rgba(212, 122, 91, 0.3);
  
  /* Typography Colors */
  --ink-primary: #f5f2eb;
  --ink-muted: #a3b8ac;
  --ink-dark: #1e2421;
  --ink-dark-muted: #4f6e5f;
  
  /* Structural Tokens */
  --font-sans: 'Montserrat', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Noto Serif KR', 'Nanum Myeongjo', serif;
  --border-subtle: rgba(125, 164, 144, 0.18);
  --border-highlight: rgba(212, 122, 91, 0.4);
  --radius-card: 16px;
  --radius-pill: 9999px;
  --shadow-elevation: 0 16px 40px rgba(0, 0, 0, 0.45);
}

/* Global Reset & Base Styling */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-dark);
  color: var(--ink-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Responsive Editorial Layout */
.test-layout-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem;
}

@media (min-width: 992px) {
  .test-layout-wrapper {
    grid-template-columns: 360px 1fr;
    gap: 2.5rem;
    padding: 2.5rem;
  }
  
  .test-sidebar-pass {
    position: sticky;
    top: 2.5rem;
    align-self: start;
  }
}

.test-main-feed {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Glassmorphism Surface Utility */
.glass-panel {
  background: rgba(34, 41, 37, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

/* Studio Seal Tag */
.studio-seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--terracotta-rust);
  color: var(--bg-porcelain);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 2px 8px;
  border-radius: 4px;
  box-shadow: 0 2px 8px var(--terracotta-glow);
}

/* View Transitions Support */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.3s;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--celadon-sage);
}