:root {
  --bryko-ai-primary: #e61052;
  --bryko-ai-bg: #09090d;
  --bryko-ai-card: rgba(20, 20, 28, .96);
  --bryko-ai-border: rgba(255,255,255,.08);
  --bryko-ai-text: #f5f7fa;
  --bryko-ai-muted: #a9afbf;
}

.bryko-ai-agent {
  background: radial-gradient(circle at top right, rgba(230,16,82,.12), transparent 30%), linear-gradient(180deg, #0d0d14 0%, #09090d 100%);
  color: var(--bryko-ai-text);
  border: 1px solid var(--bryko-ai-border);
  border-radius: 22px;
  box-shadow: 0 24px 70px rgba(0,0,0,.45);
  overflow: hidden;
  max-width: 860px;
}

.bryko-ai-agent--floating {
  position: fixed;
  right: 18px;
  bottom: 88px;
  width: min(420px, calc(100vw - 24px));
  z-index: 99999;
}

.bryko-ai-agent.is-hidden { display: none; }

.bryko-ai-agent__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: linear-gradient(135deg, rgba(255,255,255,.02) 0%, rgba(230,16,82,.08) 100%);
  border-bottom: 1px solid var(--bryko-ai-border);
}

.bryko-ai-agent__sub { color: var(--bryko-ai-muted); font-size: 12px; margin-top: 4px; }

.bryko-ai-agent__messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 300px;
  max-height: 450px;
  overflow-y: auto;
  padding: 18px;
}

.bryko-ai-agent__message {
  max-width: 88%;
  padding: 14px 16px;
  border-radius: 18px;
  line-height: 1.55;
  font-size: 14px;
}

.bryko-ai-agent__message--assistant {
  align-self: flex-start;
  background: var(--bryko-ai-card);
  border: 1px solid var(--bryko-ai-border);
}

.bryko-ai-agent__message--user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--bryko-ai-primary) 0%, #85153f 100%);
  color: #fff;
}

.bryko-ai-agent__form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 16px 18px 18px;
  border-top: 1px solid var(--bryko-ai-border);
}

.bryko-ai-agent__input {
  width: 100%;
  min-height: 58px;
  border-radius: 16px;
  border: 1px solid var(--bryko-ai-border);
  background: #0e1016;
  color: var(--bryko-ai-text);
  padding: 14px 16px;
  resize: vertical;
}

.bryko-ai-agent__input:focus {
  outline: none;
  border-color: rgba(230,16,82,.55);
  box-shadow: 0 0 0 3px rgba(230,16,82,.12);
}

.bryko-ai-agent__button,
.bryko-ai-widget-launcher__button,
.bryko-ai-agent__close {
  border: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--bryko-ai-primary) 0%, #85153f 100%);
  color: #fff;
  cursor: pointer;
}

.bryko-ai-agent__button {
  min-width: 110px;
  padding: 12px 16px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.bryko-ai-agent__close {
  width: 40px;
  height: 40px;
  font-size: 22px;
  line-height: 1;
}

.bryko-ai-widget-launcher {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 99999;
}

.bryko-ai-widget-launcher__button {
  width: 58px;
  height: 58px;
  border-radius: 999px;
  font-weight: 800;
  box-shadow: 0 18px 40px rgba(0,0,0,.35);
}

.bryko-ai-agent__message p:last-child { margin-bottom: 0; }

@media (max-width: 640px) {
  .bryko-ai-agent__form { grid-template-columns: 1fr; }
  .bryko-ai-agent--floating { right: 12px; bottom: 82px; width: calc(100vw - 24px); }
  .bryko-ai-agent__messages { min-height: 250px; max-height: 380px; }
}