.chatbox-card {
  background: rgba(255, 255, 255, .7);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  position: relative;
}

.chatbox-card::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 16%;
  width: 88px;
  height: 20px;
  background: linear-gradient(135deg,
      color-mix(in srgb, var(--soft) 80%, #fff),
      color-mix(in srgb, var(--soft) 55%, #fff));
  opacity: .9;
  border-radius: 999px;
  transform: rotate(-4deg);
  box-shadow: 0 3px 6px rgb(0 0 0 / .12);
  pointer-events: none;
}

.chatbox-header {
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.chatbox-card .section-title {
  display: flex;
  align-items: center;
  gap: .4rem;
  margin-bottom: 0;
  font-size: 1.15rem;
}

.chatbox-card .section-title::after {
  content: "";
  flex: 1;
  height: 2px;
  margin-left: .4rem;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--pink) 85%, transparent),
    transparent
  );
  opacity: .75;
}

.chatbox-card .section-title .i {
  font-size: 1.3rem;
}

.chatbox-card .meta {
  font-size: .85rem;
  opacity: .8;
}

.chatbox-header .meta::before {
  content: "♡";
  margin-right: .25rem;
  font-size: .85rem;
  opacity: .7;
}

.chatbox-frame {
  border-radius: var(--radius);
  padding: 1rem;
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--cream) 80%, #fff),
      color-mix(in srgb, var(--soft) 55%, #fff),
      color-mix(in srgb, var(--sage, var(--soft)) 65%, #fff)
    );
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  box-shadow: var(--shadow);
  transition: transform .12s ease, box-shadow .12s ease;
}

.chatbox-frame:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 18px rgb(0 0 0 / .12);
}

.chatbox-frame iframe {
  width: 100%;
  height: clamp(260px, 48vh, 380px);
  border: none;
  display: block;
  border-radius: var(--radius);
  background: #fff;
}

.chatbox-note {
  text-align: right;
  font-size: .8rem;
  opacity: .75;
}

@media (max-width: 640px) {
  .chatbox-card {
    gap: .5rem;
  }

  .chatbox-card .section-title::after {
    display: none;
  }

  .chatbox-frame {
    padding: .6rem;
  }

  .chatbox-frame iframe {
    height: 320px;
  }
}