.App {
  display: grid;
  /* 
    3 rows: 
      1) Profile
      2) Main content (left = message, right = online)
      3) New message
  */
  grid-template-rows: auto 1fr auto;
  /* 2 columns: left for chat, right for online */
  grid-template-columns: 2fr 1fr;

  height: 100vh; /* fill viewport height */
  width: clamp(300px, 100%, 1200px);
  margin: 0 auto;
}

/* ----- Profile (Row 1, spans both columns) ----- */
.profile {
  grid-column: 1 / 3;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid var(--theme-color);
}

.profile h1 {
  margin-right: auto; /* pushes name/edit form to the right */
}

.profile form {
  display: flex;
  flex-grow: 1;
  align-items: center;
  gap: 0.5rem;
  max-width: 300px;
}

.profile form input {
  background-color: var(--textbox-color);
}

/* ----- Chat Messages (Row 2, Col 1) ----- */
.message-panel {
  grid-row: 2 / 3;
  grid-column: 1 / 2;

  /* Ensure this section scrolls if content is long */
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.messages {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.system-message {
  background-color: var(--theme-color);
  color: var(--theme-color-contrast);
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-style: italic;
}

.user-message {
  background-color: var(--textbox-color);
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
}

.message h1 {
  margin-right: 0.5rem;
}

/* ----- Online Panel (Row 2, Col 2) ----- */
.online {
  grid-row: 2 / 3;
  grid-column: 2 / 3;

  /* Also scroll independently if needed */
  overflow-y: auto;
  padding: 1rem;
  border-left: 1px solid var(--theme-color);
  white-space: pre-wrap;
  font-family: monospace;
}

/* ----- New Message (Row 3, spans columns 1-2) ----- */
.new-message {
  grid-column: 1 / 3;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  border-top: 1px solid var(--theme-color);
}

.new-message form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  max-width: 600px;
}

.new-message form h3 {
  margin-bottom: 0.25rem;
}

/* Distinct background for the textarea */
.new-message form textarea {
  font-family: monospace;
  font-weight: 400;
  font-size: 1rem;
  resize: vertical;
  min-height: 80px;
  background-color: var(--textbox-color);
  color: inherit;

  /* Subtle shadow for visibility */
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.12),
    0 1px 2px rgba(0, 0, 0, 0.24);
}

@media (prefers-color-scheme: dark) {
  .new-message form textarea {
    box-shadow: 0 0 0 1px #17492b;
  }
}