/* ===== Variables ===== */
:root {
  --pico-font-family: "Noto Sans KR", system-ui, -apple-system, sans-serif;
}

/* ===== Brand ===== */
.brand {
  font-weight: 700;
  font-size: 1.5rem;
  text-decoration: none;
  letter-spacing: -0.02em;
  color: var(--pico-contrast);
}

/* ===== Content Grid ===== */
.grid-layout {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--pico-block-spacing-vertical);
}

.grid-layout article {
  margin: 0;
  display: flex;
  flex-direction: column;
}

/* ===== 클릭 가능한 카드 ===== */
.content-card {
  position: relative;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.content-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

/* Stretched link — article 전체를 덮는 투명 레이어 */
.stretched-link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* ===== Detail Layout ===== */
.detail-layout {
  display: grid;
  gap: var(--pico-block-spacing-vertical);
}

.detail-info {
  display: flex;
  flex-direction: column;
  gap: var(--pico-block-spacing-vertical);
}

/* ===== iframe ===== */
.iframe-wrapper {
  position: relative;
  aspect-ratio: 16 / 9;
  width: 100%;
  background: var(--pico-card-background-color);
  border-radius: var(--pico-border-radius);
  overflow: hidden;
}

.iframe-wrapper iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.iframe-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--pico-card-background-color);
}

/* ===== Spinner ===== */
.spinner {
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--pico-muted-border-color);
  border-top-color: var(--pico-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===== Tags ===== */
.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--pico-border-radius);
  background: var(--pico-code-background-color);
  color: var(--pico-muted-color);
  text-decoration: none;
}

.tag:hover {
  color: var(--pico-primary);
}

/* ===== 브라우저 전체화면 모드 (F11 감지) ===== */
body.is-fullscreen {
  overflow: hidden;
}

/* iframe-wrapper를 viewport에 고정하고 16:9 레터박스 적용 */
body.is-fullscreen .iframe-wrapper {
  position: fixed;
  inset: 0;
  z-index: 9999;
  width: 100%;
  height: 100%;
  aspect-ratio: unset;
  border-radius: 0;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.is-fullscreen .iframe-wrapper iframe {
  width: min(100vw, 177.78vh);
  height: min(100vh, 56.25vw);
}