.staf-agent {
  --sa-brand: #1f4e79;
  --sa-brand-text: #ffffff;
  --sa-bg: #ffffff;
  --sa-text: #1d2733;
  --sa-muted: #5b6573;
  --sa-user-bg: #e8f0f8;
  --sa-border: #d6dde6;
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  z-index: 99999;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.45;
  color: var(--sa-text);
}

.staf-agent *,
.staf-agent *::before,
.staf-agent *::after {
  box-sizing: border-box;
}

.staf-agent-toggle {
  background: var(--sa-brand);
  color: var(--sa-brand-text);
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}

.staf-agent-toggle:focus-visible,
.staf-agent button:focus-visible,
.staf-agent input:focus-visible,
.staf-agent select:focus-visible,
.staf-agent textarea:focus-visible {
  outline: 3px solid #f2b705;
  outline-offset: 2px;
}

.staf-agent-panel[hidden] {
  display: none;
}

.staf-agent-panel {
  position: absolute;
  right: 0;
  bottom: 56px;
  width: min(380px, calc(100vw - 32px));
  height: min(560px, calc(100vh - 110px));
  display: flex;
  flex-direction: column;
  background: var(--sa-bg);
  border: 1px solid var(--sa-border);
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
  overflow: hidden;
}

.staf-agent-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--sa-brand);
  color: var(--sa-brand-text);
}

.staf-agent-close {
  background: transparent;
  border: 0;
  color: var(--sa-brand-text);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.staf-agent-log {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #f7f9fb;
}

.staf-agent-msg {
  max-width: 88%;
  padding: 10px 12px;
  border-radius: 12px;
  white-space: pre-line;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.staf-agent-msg.bot {
  align-self: flex-start;
  background: var(--sa-bg);
  border: 1px solid var(--sa-border);
}

.staf-agent-msg.user {
  align-self: flex-end;
  background: var(--sa-user-bg);
}

.staf-agent-msg.typing {
  color: var(--sa-muted);
  font-style: italic;
}

.staf-agent-msg a {
  color: var(--sa-brand);
  text-decoration: underline;
  word-break: break-all;
}

.staf-agent-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 14px 0;
  background: #f7f9fb;
}

.staf-agent-quick:empty {
  display: none;
}

.staf-agent-chip {
  background: var(--sa-bg);
  color: var(--sa-brand);
  border: 1px solid var(--sa-brand);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

.staf-agent-chip:hover {
  background: var(--sa-user-bg);
}

.staf-agent-form {
  display: flex;
  gap: 8px;
  padding: 10px 14px;
  border-top: 1px solid var(--sa-border);
  background: var(--sa-bg);
}

.staf-agent-form input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--sa-border);
  border-radius: 8px;
  font-size: 15px;
  color: var(--sa-text);
  background: var(--sa-bg);
}

.staf-agent button[type="submit"] {
  background: var(--sa-brand);
  color: var(--sa-brand-text);
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
}

.staf-agent button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: default;
}

.staf-agent-note {
  margin: 0;
  padding: 0 14px 10px;
  font-size: 11px;
  color: var(--sa-muted);
  background: var(--sa-bg);
}

.staf-agent-callback {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--sa-bg);
  border: 1px solid var(--sa-border);
  border-radius: 12px;
  padding: 12px;
  align-self: stretch;
}

.staf-agent-callback label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--sa-muted);
}

.staf-agent-callback input[type="text"],
.staf-agent-callback input[type="tel"],
.staf-agent-callback input[type="email"],
.staf-agent-callback select,
.staf-agent-callback textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--sa-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--sa-text);
  background: #ffffff;
  font-family: inherit;
}

.staf-agent-callback .staf-agent-consent {
  flex-direction: row;
  align-items: flex-start;
  gap: 8px;
}

.staf-agent-callback button[type="submit"] {
  align-self: flex-start;
}

.staf-agent-status {
  margin: 0;
  font-size: 13px;
  color: #a33a00;
}

.staf-agent .staf-agent-hp {
  position: absolute !important;
  left: -10000px !important;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

@media (max-width: 480px) {
  .staf-agent {
    right: 10px;
    left: 10px;
  }
  .staf-agent-panel {
    right: 0;
    left: 0;
    width: auto;
    bottom: 56px;
  }
  .staf-agent-toggle {
    float: right;
  }
}

@media (prefers-color-scheme: dark) {
  .staf-agent:not(.staf-agent--light) {
    --sa-bg: #1b222b;
    --sa-text: #e8edf2;
    --sa-muted: #a7b1bd;
    --sa-user-bg: #243548;
    --sa-border: #34404d;
  }
  .staf-agent:not(.staf-agent--light) .staf-agent-log,
  .staf-agent:not(.staf-agent--light) .staf-agent-quick {
    background: #151b22;
  }
  .staf-agent:not(.staf-agent--light) .staf-agent-msg a {
    color: #8cc4ff;
  }
  .staf-agent:not(.staf-agent--light) .staf-agent-chip {
    color: #8cc4ff;
    border-color: #8cc4ff;
  }
  .staf-agent:not(.staf-agent--light) .staf-agent-callback input[type="text"],
  .staf-agent:not(.staf-agent--light) .staf-agent-callback input[type="tel"],
  .staf-agent:not(.staf-agent--light) .staf-agent-callback input[type="email"],
  .staf-agent:not(.staf-agent--light) .staf-agent-callback select,
  .staf-agent:not(.staf-agent--light) .staf-agent-callback textarea {
    background: #101419;
  }
}