.support-chat {
  --sc-bg: var(--bg-card, var(--bg, #111113));
  --sc-panel: var(--bg-elevated, var(--bg, #18181b));
  --sc-text: var(--text, #f4f4f5);
  --sc-muted: var(--text-muted, #9b9ba3);
  --sc-border: var(--border, #27272a);
  --sc-hover: var(--bg-hover, #1f1f23);
  --sc-input: var(--bg-input, var(--bg, #0f0f11));
  --sc-accent: var(--btn-primary-bg, var(--text, #f4f4f5));
  --sc-accent-text: var(--btn-primary-text, var(--bg, #09090b));
  --sc-font: var(--font, "Inter", system-ui, sans-serif);
  position: fixed;
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: max(1rem, env(safe-area-inset-bottom, 0px));
  z-index: 80;
  -webkit-tap-highlight-color: transparent;
  font-family: var(--sc-font);
  color: var(--sc-text);
}

body:has(#admin-screen:not(.hidden)) .support-chat,
.support-chat.is-admin-hidden {
  display: none !important;
}

.support-chat-toggle {
  position: relative;
  width: 3.1rem;
  height: 3.1rem;
  border-radius: 999px;
  border: 1px solid var(--sc-border);
  background: var(--toggle-bg, var(--sc-panel));
  color: var(--sc-text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
}

.support-chat-toggle:hover {
  background: var(--sc-hover);
}

.support-chat-toggle svg {
  width: 1.35rem;
  height: 1.35rem;
}

.support-chat-badge {
  position: absolute;
  top: -0.2rem;
  right: -0.2rem;
  min-width: 1.15rem;
  height: 1.15rem;
  padding: 0 0.28rem;
  border-radius: 999px;
  background: var(--sc-accent);
  color: var(--sc-accent-text);
  font-size: 0.68rem;
  font-weight: 650;
  line-height: 1.15rem;
  text-align: center;
}

.support-chat-badge.hidden,
.support-chat .hidden {
  display: none !important;
}

.support-chat-panel {
  position: absolute;
  right: 0;
  bottom: calc(3.1rem + 0.65rem);
  width: min(22.5rem, calc(100vw - 1.5rem));
  height: min(32rem, calc(100dvh - 6rem));
  display: flex;
  flex-direction: column;
  background: var(--sc-panel);
  border: 1px solid var(--sc-border);
  border-radius: 14px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.38);
  overflow: hidden;
}

.support-chat.is-capturing {
  visibility: hidden;
}

.support-chat-head {
  display: grid;
  grid-template-columns: 2rem 1fr 2rem;
  align-items: center;
  gap: 0.4rem;
  padding: 0.8rem 0.65rem 0.8rem 0.9rem;
  border-bottom: 1px solid var(--sc-border);
}

.support-chat-head-spacer {
  width: 2rem;
  height: 2rem;
}

.support-chat-head strong {
  font-size: 0.95rem;
  font-weight: 650;
  text-align: center;
}

.support-chat-close {
  width: 2rem;
  height: 2rem;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--sc-muted);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.support-chat-close:hover {
  background: var(--sc-hover);
  color: var(--sc-text);
}

.support-chat-log {
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 0.85rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  overscroll-behavior: contain;
  scrollbar-gutter: auto;
}

.support-chat-log:not(:has(.support-chat-msg)) {
  justify-content: center;
  align-items: center;
}

.support-chat-empty {
  margin: 0;
  color: var(--sc-muted);
  font-size: 0.86rem;
  text-align: center;
  max-width: 16rem;
  line-height: 1.4;
}

.support-chat-msg {
  max-width: 88%;
  padding: 0.55rem 0.7rem;
  border-radius: 12px;
  font-size: 0.9rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
}

.support-chat-msg time {
  display: block;
  margin-top: 0.28rem;
  font-size: 0.68rem;
  opacity: 0.7;
}

.support-chat-msg.is-user {
  margin-left: auto;
  background: var(--sc-accent);
  color: var(--sc-accent-text);
  border-bottom-right-radius: 4px;
}

.support-chat-msg.is-admin {
  margin-right: auto;
  background: var(--sc-hover);
  border: 1px solid var(--sc-border);
  border-bottom-left-radius: 4px;
}

.support-chat-msg-photo {
  display: block;
  margin-bottom: 0.35rem;
}

.support-chat-msg-photo img {
  display: block;
  max-width: 100%;
  max-height: 12rem;
  border-radius: 8px;
  object-fit: cover;
}

.support-chat-msg-text {
  display: block;
}

.support-chat-form {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.7rem;
  border-top: 1px solid var(--sc-border);
  background: var(--sc-bg);
}

.support-chat-attach {
  position: relative;
  width: 4.4rem;
}

.support-chat-attach img {
  display: block;
  width: 4.4rem;
  height: 4.4rem;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--sc-border);
}

.support-chat-attach-remove {
  position: absolute;
  top: -0.35rem;
  right: -0.35rem;
  width: 1.2rem;
  height: 1.2rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: var(--sc-accent);
  color: var(--sc-accent-text);
  font-size: 0.85rem;
  line-height: 1;
  cursor: pointer;
}

.support-chat-compose {
  display: flex;
  align-items: flex-end;
  gap: 0.4rem;
}

.support-chat-tool {
  align-self: flex-end;
  width: 2.4rem;
  min-width: 2.4rem;
  height: 2.6rem;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--sc-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.support-chat-tool svg {
  width: 1.15rem;
  height: 1.15rem;
}

.support-chat-tool:hover {
  background: var(--sc-hover);
  color: var(--sc-text);
}

.support-chat-compose textarea {
  flex: 1;
  min-height: 2.6rem;
  max-height: 7rem;
  resize: none;
  overflow-x: hidden;
  overflow-y: hidden;
  border: 1px solid var(--sc-border);
  border-radius: 10px;
  background: var(--sc-input);
  color: var(--sc-text);
  font: inherit;
  font-size: 0.9rem;
  padding: 0.55rem 0.7rem;
  outline: none;
}

.support-chat-compose textarea:focus {
  border-color: var(--border-strong, #52525b);
}

.support-chat-send {
  align-self: flex-end;
  width: 2.6rem;
  min-width: 2.6rem;
  height: 2.6rem;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: var(--sc-accent);
  color: var(--sc-accent-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.support-chat-send svg {
  width: 1.15rem;
  height: 1.15rem;
}

.support-chat-send:disabled {
  opacity: 0.55;
  cursor: default;
}

.support-chat-error {
  margin: 0 0.7rem 0.65rem;
  color: var(--sc-muted);
  font-size: 0.78rem;
}

@media (max-width: 640px) {
  .support-chat {
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    bottom: max(0.75rem, env(safe-area-inset-bottom, 0px));
  }

  .support-chat-panel {
    width: min(22.5rem, calc(100vw - 1.25rem));
    height: min(70dvh, calc(100dvh - 5.5rem));
  }
}