.app-shell {
  width: min(100% - 2rem, 980px);
  margin: 0 auto;
  padding: 3rem 0;
}

.site-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: end;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.site-header h1 {
  font-size: 4rem;
  line-height: 0.95;
  letter-spacing: 0;
}

.site-header p:not(.eyebrow) {
  max-width: 18rem;
  color: var(--muted);
  line-height: 1.7;
  text-align: right;
}

.eyebrow {
  margin-bottom: 0.5rem;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1.25rem;
}

.composer {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel-bg);
  box-shadow: var(--shadow);
}

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

.composer-options {
  color: var(--muted);
}

.composer-options summary {
  width: fit-content;
  cursor: pointer;
}

.option-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 12rem));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.option-fields label {
  display: grid;
  gap: 0.35rem;
  color: var(--text);
  font-size: 0.9rem;
}

.notes-feed {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 1rem, 980px);
    padding: 1.25rem 0;
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .site-header p:not(.eyebrow) {
    max-width: none;
    text-align: left;
  }

  .site-header h1 {
    font-size: 2.75rem;
  }

  .composer-actions,
  .composer-actions input {
    width: 100%;
  }

  .option-fields {
    grid-template-columns: 1fr;
  }
}