.ai-chat-toggle { position: fixed; right: 22px; bottom: 22px; z-index: 30; padding: 12px 20px; border: 0; border-radius: 999px; background: #173e31; color: #fff; font-weight: 700; box-shadow: 0 4px 18px #173e3130; cursor: pointer; }
.ai-chat-panel { position: fixed; right: 18px; bottom: 76px; z-index: 31; width: min(390px, calc(100vw - 36px)); height: min(650px, calc(100dvh - 100px)); display: flex; flex-direction: column; background: #fff; border: 1px solid #dfe5e1; border-radius: 16px; box-shadow: 0 12px 50px #142c3233; overflow: hidden; }
.ai-chat-panel[hidden] { display: none; }
.ai-chat-head { display: flex; align-items: center; justify-content: space-between; padding: 16px; border-bottom: 1px solid #dfe5e1; background: #f5f8f4; }
.ai-chat-head small { display: block; margin-top: 3px; font-size: .7rem; color: #5f746a; }
.ai-chat-head button { border: 0; background: transparent; font-size: 1.6rem; color: #173e31; cursor: pointer; }
.ai-chat-messages { flex: 1; min-height: 0; overflow: auto; padding: 16px; }
.ai-chat-welcome { color: #5f746a; font-size: .85rem; line-height: 1.5; }
.ai-chat-message { margin: 0 0 12px; padding: 10px 12px; border-radius: 10px; background: #f1f4ef; font-size: .85rem; line-height: 1.5; white-space: pre-wrap; overflow-wrap: anywhere; }
.ai-chat-message.user { background: #e5f3e9; margin-left: 25px; }
.ai-chat-message.assistant { margin-right: 15px; }
.ai-chat-message small { display: block; margin-bottom: 5px; color: #536b60; font-size: .65rem; font-weight: 700; }
.ai-chat-status { min-height: 20px; padding: 0 16px; margin: 0 0 6px; font-size: .75rem; color: #65756d; }
.ai-chat-form { padding: 12px 16px 16px; border-top: 1px solid #dfe5e1; }
.ai-chat-form label { display: block; font-size: .75rem; margin-bottom: 6px; }
.ai-chat-form textarea { width: 100%; resize: vertical; max-height: 140px; min-height: 65px; padding: 10px; border: 1px solid #c9d8cc; border-radius: 8px; }
.ai-chat-form > div { display: flex; justify-content: space-between; gap: 10px; margin-top: 8px; }
.ai-chat-form button { padding: 8px 14px; border: 1px solid #c9d8cc; border-radius: 7px; background: #fff; color: #173e31; cursor: pointer; }
.ai-chat-form #ai-chat-send { background: #173e31; color: white; }
.ai-chat-form button:disabled { opacity: .5; cursor: wait; }
@media (max-width: 560px) { .ai-chat-panel { right: 10px; bottom: 70px; width: calc(100vw - 20px); } .ai-chat-toggle { right: 12px; bottom: 14px; } }