:root {
  --bg-dark: #0f1115;
  --bg-elevated: #141820;
  --panel-bg: #1a1d23;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.35);
  --text-main: #e2e8f0;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  --border: #2d333f;
  --radius: 14px;
  --radius-sm: 10px;
  --hub-max: 1120px;
  --editor-block-gap: 28px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text-main);
  font-family: "Pretendard", system-ui, sans-serif;
  background-color: var(--bg-dark);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 100% 50%, rgba(99, 102, 241, 0.06), transparent);
  overflow-x: hidden;
}

.hub-shell {
  display: flex;
  min-height: 100vh;
}

.hub-sidebar-ad {
  flex: 0 0 160px;
  min-height: 120px;
  background: #000;
  border-right: 1px solid var(--border);
  padding: 20px 8px;
}

.hub-sidebar-ad .adsbygoogle {
  display: block;
  width: 100%;
  max-width: 144px;
}

.hub-main {
  flex: 1;
  min-width: 0;
  padding: 40px 24px 64px;
}

.hub-inner {
  max-width: var(--hub-max);
  margin: 0 auto;
}

.hub-header {
  margin-bottom: 36px;
}

.hub-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.12);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
}

.hub-title {
  margin: 0 0 10px;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hub-title .accent {
  color: var(--accent);
}

.hub-lead {
  margin: 0;
  max-width: none;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-dim);
}

.hub-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 28px;
}

.hub-search-wrap {
  flex: 1 1 220px;
  min-width: 0;
  max-width: 400px;
  position: relative;
}

.hub-search {
  width: 100%;
  padding: 12px 16px 12px 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel-bg);
  color: var(--text-main);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

.hub-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.hub-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.hub-count {
  font-size: 13px;
  color: var(--text-dim);
  white-space: nowrap;
}

.hub-ad-banner {
  margin-bottom: var(--editor-block-gap);
  min-height: 200px;
  border-radius: var(--radius);
  background: #0a0c10;
  border: 1px dashed var(--border);
  overflow: hidden;
}

.hub-ad-banner .adsbygoogle {
  display: block;
  width: 100%;
  min-height: 200px;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.hub-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 200px;
  padding: 22px 22px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(165deg, var(--panel-bg) 0%, var(--bg-elevated) 100%);
  text-decoration: none;
  color: inherit;
  transition:
    transform 0.22s ease,
    border-color 0.22s ease,
    box-shadow 0.22s ease;
  overflow: hidden;
}

.hub-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(
    circle at 100% 0%,
    var(--card-accent-glow, rgba(59, 130, 246, 0.15)),
    transparent 55%
  );
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.hub-card:not(.is-disabled):hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--card-accent, var(--accent)) 45%, var(--border));
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.35),
    0 0 0 1px color-mix(in srgb, var(--card-accent, var(--accent)) 25%, transparent);
}

.hub-card:not(.is-disabled):hover::before {
  opacity: 1;
}

.hub-card.is-disabled {
  cursor: default;
  opacity: 0.55;
  pointer-events: none;
}

.hub-card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(59, 130, 246, 0.2);
  color: #93c5fd;
}

.hub-card-badge.is-soon {
  background: rgba(100, 116, 139, 0.25);
  color: var(--text-dim);
}

.hub-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--card-accent, var(--accent)) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--accent)) 30%, var(--border));
  margin-bottom: 16px;
}

.hub-card-title {
  margin: 0 0 4px;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hub-card-subtitle {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--card-accent, var(--accent));
}

.hub-card-desc {
  margin: 0;
  flex: 1;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-dim);
}

.hub-card-cta {
  margin-top: 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--card-accent, var(--accent));
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hub-card-cta::after {
  content: "→";
  transition: transform 0.2s ease;
}

.hub-card:not(.is-disabled):hover .hub-card-cta::after {
  transform: translateX(4px);
}

.hub-empty {
  grid-column: 1 / -1;
  padding: 48px 24px;
  text-align: center;
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--text-dim);
  font-size: 14px;
}

.hub-footer {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

@media (max-width: 900px) {
  .hub-sidebar-ad {
    display: none;
  }

  .hub-main {
    padding: 28px 16px 48px;
  }
}

@media (max-width: 520px) {
  .hub-grid {
    grid-template-columns: 1fr;
  }
}