/**
 * 모바일(뷰포트 좁음): 플랫폼 UI 표시
 * PC·태블릿 가로 등(768px 이상): 앱 스토어 안내만 표시
 */
:root {
  --mjn-bg: #0f1419;
  --mjn-surface: #1a222c;
  --mjn-text: #e8eaed;
  --mjn-muted: #9aa0a6;
  --mjn-accent: #c9a227;
  --mjn-safe-bottom: env(safe-area-inset-bottom, 0);
}

.mjn-pc-only {
  display: none !important;
}

.mjn-mobile-only {
  display: block;
}

@media (min-width: 768px) {
  .mjn-pc-only {
    display: flex !important;
  }

  .mjn-mobile-only {
    display: none !important;
  }
}

/* ——— PC: 앱 스토어만 ——— */
.mjn-pc-store {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding: 2rem 1.5rem calc(2rem + var(--mjn-safe-bottom));
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #121820 0%, #0a0e12 50%, #151c24 100%);
  color: var(--mjn-text);
  font-weight: 500;
}

.mjn-pc-store__inner {
  max-width: 28rem;
  text-align: center;
}

.mjn-pc-store__brand {
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0 0 0.75rem;
  color: var(--mjn-text);
}

.mjn-pc-store__lead {
  font-size: 1.05rem;
  line-height: 1.55;
  margin: 0 0 0.5rem;
  font-weight: 500;
}

.mjn-pc-store__sub {
  font-size: 0.92rem;
  color: var(--mjn-muted);
  line-height: 1.5;
  margin: 0 0 2rem;
  font-weight: 500;
}

.mjn-pc-store__badges {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  align-items: stretch;
}

.mjn-store-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.25rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  border: 1px solid transparent;
}

.mjn-store-btn:hover {
  transform: translateY(-1px);
}

.mjn-store-btn--apple {
  background: #fff;
  color: #000;
}

.mjn-store-btn--google {
  background: #1f1f1f;
  color: #fff;
  border-color: #3c4043;
}

.mjn-pc-store__foot {
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--mjn-muted);
  font-weight: 500;
}

.mjn-pc-store__foot a {
  color: var(--mjn-accent);
}

/* ——— 모바일: 플랫폼 셸 ——— */
.mjn-mobile-shell {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding: 0 0 calc(1.5rem + var(--mjn-safe-bottom));
  box-sizing: border-box;
  background: var(--mjn-bg);
  color: var(--mjn-text);
  font-weight: 500;
}

.mjn-mobile-shell a {
  color: var(--mjn-accent);
}

.mjn-mobile-top {
  padding: 1rem 1.1rem 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(26, 34, 44, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.mjn-mobile-top h1 {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.3;
}

.mjn-mobile-top .mjn-tagline {
  font-size: 0.8rem;
  color: var(--mjn-muted);
  margin: 0.35rem 0 0;
  font-weight: 500;
}

.mjn-mobile-main {
  padding: 1.1rem 1.1rem 0;
  max-width: 32rem;
  margin: 0 auto;
}

.mjn-card {
  background: var(--mjn-surface);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  margin-bottom: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.mjn-card h2 {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 1.05rem;
  margin: 0 0 0.6rem;
  font-weight: 700;
}

.mjn-card p,
.mjn-card li {
  font-size: 0.92rem;
  line-height: 1.55;
  color: #c4c7cc;
  margin: 0 0 0.5rem;
  font-weight: 500;
}

.mjn-card ul {
  margin: 0;
  padding-left: 1.15rem;
}

.mjn-btn-row {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.mjn-btn {
  display: block;
  text-align: center;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  background: rgba(201, 162, 39, 0.15);
  color: var(--mjn-accent);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid rgba(201, 162, 39, 0.35);
}

.mjn-btn:active {
  opacity: 0.9;
}

.mjn-btn--secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: #c4c7cc;
}

.mjn-admin-banner {
  background: rgba(201, 162, 39, 0.1);
  border: 1px solid rgba(201, 162, 39, 0.35);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  margin-bottom: 0.75rem;
  font-size: 0.84rem;
  line-height: 1.5;
  color: #d7d9dc;
  font-weight: 500;
}

.mjn-admin-banner strong {
  color: var(--mjn-accent);
}

.mjn-dev-toggle {
  width: 100%;
  text-align: left;
  padding: 0.6rem 0;
  background: none;
  border: none;
  color: var(--mjn-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mjn-dev-panel[hidden] {
  display: none !important;
}

.mjn-dev-panel label {
  display: block;
  font-size: 0.78rem;
  color: var(--mjn-muted);
  margin-bottom: 0.35rem;
  font-weight: 500;
}

.mjn-dev-panel input[type="url"] {
  width: 100%;
  box-sizing: border-box;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: #0f1419;
  color: var(--mjn-text);
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.mjn-dev-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.mjn-dev-actions button {
  flex: 1;
  min-width: 6rem;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: #252d38;
  color: var(--mjn-text);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
}

.mjn-health-out {
  margin-top: 0.6rem;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  background: #0f1419;
  font-size: 0.75rem;
  font-family: ui-monospace, monospace;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 10rem;
  overflow: auto;
  color: #a8d5a2;
}

.mjn-health-out.mjn-health-out--err {
  color: #f5a8a8;
}

.mjn-mobile-foot {
  padding: 1rem 1.1rem;
  font-size: 0.75rem;
  color: var(--mjn-muted);
  text-align: center;
  line-height: 1.45;
  font-weight: 500;
}