.mpv1050-app-shell {
  --mpv-bg: #f5f2ea;
  --mpv-panel: #fffdf8;
  --mpv-ink: #2b261f;
  --mpv-muted: #7c7266;
  --mpv-line: #ddd4c7;
  --mpv-accent: #6f5b3e;
  --mpv-accent-2: #d8c29d;
  --mpv-shadow: 0 18px 50px rgba(56, 45, 30, 0.14);
  --mpv-radius: 22px;

  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 28px 0;
  color: var(--mpv-ink);
  font-family: "Segoe UI", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
}

.mpv1050-app-shell * {
  box-sizing: border-box;
}

.mpv1050-app-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  margin-bottom: 24px;
}

.mpv1050-eyebrow {
  margin: 0 0 8px;
  color: var(--mpv-accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.mpv1050-app-header h1 {
  margin: 0;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.05;
  color: var(--mpv-ink);
}

.mpv1050-lead {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--mpv-muted);
  font-size: 16px;
}

.mpv1050-header-actions,
.mpv1050-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.mpv1050-app-shell button {
  border: 0;
  border-radius: 999px;
  padding: 11px 16px;
  background: var(--mpv-ink);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.mpv1050-app-shell button:hover {
  transform: translateY(-1px);
}

.mpv1050-app-shell button.mpv1050-ghost {
  background: transparent;
  color: var(--mpv-ink);
  outline: 1px solid var(--mpv-line);
}

.mpv1050-workspace {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 22px;
  align-items: start;
}

.mpv1050-drop-panel,
.mpv1050-preview-panel {
  background: rgba(255, 253, 248, 0.92);
  border: 1px solid rgba(221, 212, 199, 0.9);
  border-radius: var(--mpv-radius);
  box-shadow: var(--mpv-shadow);
  overflow: hidden;
}

.mpv1050-drop-panel {
  padding: 18px;
  position: sticky;
  top: 18px;
}

.mpv1050-drop-zone {
  min-height: 230px;
  border: 2px dashed var(--mpv-accent-2);
  border-radius: 18px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 10px;
  padding: 20px;
  text-align: center;
  background: #fffaf0;
  cursor: pointer;
}

.mpv1050-drop-zone.mpv1050-dragover {
  border-color: var(--mpv-accent);
  background: #fff4d8;
}

.mpv1050-drop-zone input {
  display: none;
}

.mpv1050-drop-icon {
  display: grid;
  place-items: center;
  width: 74px;
  height: 74px;
  border-radius: 20px;
  color: #fff;
  background: linear-gradient(145deg, var(--mpv-accent), #352a1d);
  font-weight: 900;
  letter-spacing: -0.06em;
}

.mpv1050-drop-zone strong {
  font-size: 18px;
}

.mpv1050-drop-zone small {
  color: var(--mpv-muted);
}

.mpv1050-file-info {
  margin: 16px 0;
  display: grid;
  gap: 10px;
}

.mpv1050-file-info > div {
  border: 1px solid var(--mpv-line);
  border-radius: 15px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.56);
}

.mpv1050-label {
  display: block;
  color: var(--mpv-muted);
  font-size: 12px;
  margin-bottom: 4px;
}

.mpv1050-status {
  margin: 14px 0 0;
  color: var(--mpv-muted);
  font-size: 13px;
}

.mpv1050-preview-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 16px 22px;
  border-bottom: 1px solid var(--mpv-line);
}

.mpv1050-preview-header h2 {
  margin: 0;
  color: var(--mpv-ink);
}

.mpv1050-preview-header span {
  color: var(--mpv-muted);
  font-size: 13px;
}

.mpv1050-markdown-body {
  min-height: 640px;
  padding: 30px;
  background: var(--mpv-panel);
  line-height: 1.78;
  font-size: 16px;
  color: var(--mpv-ink);
}

.mpv1050-markdown-body h1,
.mpv1050-markdown-body h2,
.mpv1050-markdown-body h3 {
  line-height: 1.25;
  margin-top: 1.5em;
  margin-bottom: 0.55em;
  color: var(--mpv-ink);
}

.mpv1050-markdown-body h1:first-child,
.mpv1050-markdown-body h2:first-child,
.mpv1050-markdown-body h3:first-child {
  margin-top: 0;
}

.mpv1050-markdown-body h1 {
  padding-bottom: 0.25em;
  border-bottom: 2px solid var(--mpv-line);
}

.mpv1050-markdown-body h2 {
  padding-bottom: 0.2em;
  border-bottom: 1px solid var(--mpv-line);
}

.mpv1050-markdown-body p {
  margin: 0.8em 0;
}

.mpv1050-markdown-body a {
  color: #6d4b1f;
  font-weight: 700;
}

.mpv1050-markdown-body blockquote {
  margin: 1.2em 0;
  padding: 0.6em 1em;
  border-left: 5px solid var(--mpv-accent-2);
  background: #faf4e8;
  color: #554b40;
}

.mpv1050-markdown-body code {
  padding: 0.15em 0.35em;
  border-radius: 6px;
  background: #efe6d7;
  font-family: Consolas, Monaco, monospace;
}

.mpv1050-markdown-body pre {
  overflow: auto;
  padding: 16px;
  border-radius: 14px;
  background: #27231e;
  color: #f7efe2;
}

.mpv1050-markdown-body pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.mpv1050-markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
}

.mpv1050-markdown-body th,
.mpv1050-markdown-body td {
  border: 1px solid var(--mpv-line);
  padding: 10px;
}

.mpv1050-markdown-body th {
  background: #efe3cf;
}

.mpv1050-markdown-body img {
  max-width: 100%;
  border-radius: 12px;
}

.mpv1050-empty-state {
  display: grid;
  place-items: center;
  align-content: center;
  min-height: 480px;
  text-align: center;
  color: var(--mpv-muted);
}

.mpv1050-empty-state h3 {
  color: var(--mpv-ink);
}

@media (max-width: 860px) {
  .mpv1050-app-header {
    display: block;
  }

  .mpv1050-header-actions {
    margin-top: 18px;
  }

  .mpv1050-workspace {
    grid-template-columns: 1fr;
  }

  .mpv1050-drop-panel {
    position: static;
  }

  .mpv1050-markdown-body {
    min-height: 420px;
    padding: 22px;
  }
}