:root {
  --primary-color: #0000FF;
  --primary-hover-color: #0056b3;
  --danger-color: #dc3545;
  --danger-hover-color: #c82333;
  --background-color: #ffffff;
  --widget-background-color: #ffffff;
  --border-color: #dee2e6;
  --text-color: #212529;
  --muted-text-color: #6c757d;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --border-radius: 8px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

body {
  margin: 0;
  font-family: var(--font-family);
  background-color: var(--background-color);
  color: var(--text-color);
}

/* ===== Wrapper ===== */
.firebase-comments-widget {
  max-width: 700px;
  margin: 2rem auto;
  padding: 1rem;
}

/* ===== Spinner ===== */
.spinner {
  border: 4px solid rgba(0, 0, 0, 0.1);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border-left-color: var(--primary-color);
  margin: 20px auto;
  animation: spin 1s ease infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.muted {
  color: var(--muted-text-color);
  text-align: center;
}
.muted.error {
  color: var(--danger-color);
}


/* ===== Comment Form ===== */
.comment-form-shell {
  margin-bottom: 1.5rem;
}

.comment-form {
  background: var(--widget-background-color);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.replying-to {
  font-size: 0.9em;
  color: var(--muted-text-color);
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.comment-form input[type="text"],
.comment-form textarea {
  width: 100%;
  padding: 0.75rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: inherit;
  background-color: #fdfdff;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.comment-form input[type="text"]:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
}

.comment-form textarea {
  resize: vertical;
  min-height: 80px;
}

.form-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

#char-counter {
  font-size: 0.8em;
  color: var(--muted-text-color);
}

.actions {
  display: flex;
  gap: 0.5rem;
}

.btn {
  display: inline-block;
  font-weight: 600;
  color: var(--text-color);
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  background-color: transparent;
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  border-radius: var(--border-radius);
  transition: all 0.2s ease-in-out;
}
.btn:hover {
  background-color: #f1f3f5;
}
.btn.primary {
  color: #fff;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}
.btn.primary:hover {
  background-color: var(--primary-hover-color);
  border-color: var(--primary-hover-color);
}
.btn.primary:disabled {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  opacity: 0.65;
  cursor: not-allowed;
}

.btn.small {
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
  font-weight: normal;
  border: none;
  color: var(--muted-text-color);
}
.btn.small:hover {
  background: none;
  color: var(--primary-color);
  text-decoration: underline;
}
.btn.small.danger {
  color: var(--danger-color);
}

/* ===== Comments List ===== */
.comment-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.comment-item {
  background: var(--widget-background-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
}

.comment-item.reply-item {
  margin-left: 20px;
}

.comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.comment-author {
  font-weight: 600;
  color: var(--text-color);
}

.comment-date {
  font-size: 0.8em;
  color: var(--muted-text-color);
}

.comment-body {
  font-size: 1rem;
  line-height: 1.6;
  margin: 0.5rem 0;
  color: #343a40;
}

.comment-actions {
  margin-top: 0.5rem;
}

.inline-reply-slot > .comment-form-shell {
  margin-top: 1rem;
  margin-bottom: 0;
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .firebase-comments-widget {
    padding: 0.5rem;
    margin: 1rem auto;
  }
  .comment-form {
    padding: 1rem;
  }
  .form-footer {
    flex-direction: column-reverse;
    align-items: stretch;
  }
  .actions {
    justify-content: flex-end;
  }
  #char-counter {
    text-align: right;
    margin-bottom: 0.5rem;
  }
  .comment-item.reply-item {
    margin-left: 10px;
  }
}