:root {
  /* OKLCH Colors */
  --bg-color: oklch(0.15 0.01 250);
  --card-bg: oklch(0.22 0.02 250);
  --text-primary: oklch(0.95 0.01 250);
  --text-secondary: oklch(0.7 0.02 250);
  --primary: oklch(0.6 0.15 250); /* Electric Blue */
  --accent: oklch(0.7 0.2 330);  /* Neon Pink */
  --secondary: oklch(0.4 0.05 250);
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.6);
  
  --radius: 12px;
  --container-max: 800px;
}

@layer base, components, utilities;

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

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

  /* Subtle noise texture */
  body::before {
    content: "";
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0.03;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    z-index: 9999;
  }

  .container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
  }
}

@layer components {
  .main-header {
    background-color: rgba(24, 27, 34, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    font-size: 1.8rem;
    font-weight: 900;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
  }

  .card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .card:hover {
    box-shadow: var(--shadow-lg);
  }

  .btn {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
  }

  .btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 0 15px rgba(60, 130, 246, 0.3);
  }

  .btn-accent {
    background-color: var(--accent);
    color: white;
    box-shadow: 0 0 15px rgba(236, 72, 153, 0.3);
  }

  .btn-primary:hover, .btn-accent:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
  }

  .post-composer {
    margin: 2rem 0;
  }

  .post-composer.hidden {
    display: none;
  }

  .composer-card textarea {
    width: 100%;
    min-height: 120px;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 1rem;
    margin: 1rem 0;
    font-size: 1rem;
    resize: vertical;
  }

  .composer-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
  }

  .feed {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }
}

/* Base style for custom element */
fuk-post {
  display: block;
}