.ai-chat-widget {
    --ai-chat-accent: #0f6b5c;
    --ai-chat-accent-dark: #0b544a;
    --ai-chat-accent-text: #ffffff;
    --ai-chat-status: #4ade80;
    --ai-chat-radius: 24px;
    --ai-chat-font: inherit;
}

.ai-chat-bubble {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: var(--ai-chat-accent);
    color: var(--ai-chat-accent-text);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 10px 26px rgba(15, 107, 92, 0.4), 0 2px 6px rgba(15, 107, 92, 0.3);
    z-index: 9999;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.ai-chat-bubble:hover {
    transform: scale(1.06);
    box-shadow: 0 14px 32px rgba(15, 107, 92, 0.45), 0 4px 10px rgba(15, 107, 92, 0.35);
}

.ai-chat-bubble-dot {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--ai-chat-status);
    border: 2px solid var(--ai-chat-accent);
    animation: ai-chat-pulse 2.2s ease-in-out infinite;
}

@keyframes ai-chat-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.25); opacity: 0.75; }
}

.ai-chat-panel {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 320px;
    height: min(640px, calc(100vh - 110px));
    background: #fff;
    border: 1px solid rgba(15, 30, 26, 0.06);
    border-radius: var(--ai-chat-radius);
    box-shadow: 0 24px 60px rgba(10, 30, 26, 0.22), 0 6px 16px rgba(10, 30, 26, 0.12);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-family: var(--ai-chat-font);
    z-index: 9999;
    opacity: 0;
    transform: translateY(14px) scale(0.97);
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s linear 0.2s;
}

.ai-chat-panel-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.ai-chat-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 18px;
    background: linear-gradient(160deg, var(--ai-chat-accent) 0%, var(--ai-chat-accent-dark) 100%);
    color: var(--ai-chat-accent-text);
}

.ai-chat-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.16);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ai-chat-header-text {
    flex: 1;
}

.ai-chat-title {
    font-weight: 600;
    font-size: 14.5px;
    line-height: 1.25;
}

.ai-chat-status {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.75);
    display: flex;
    align-items: center;
    gap: 5px;
}

.ai-chat-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ai-chat-status);
}

.ai-chat-close {
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.85);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.ai-chat-close:hover {
    opacity: 0.75;
    transform: scale(1.1);
}

.ai-chat-clear {
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.ai-chat-clear:hover {
    opacity: 0.75;
    transform: scale(1.1);
}

.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 14px;
    background: #f4f7f6;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ai-chat-message-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.ai-chat-message-row-user {
    justify-content: flex-end;
}

.ai-chat-message-avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--ai-chat-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ai-chat-message-group {
    display: flex;
    flex-direction: column;
    max-width: 80%;
}

.ai-chat-message-row-user .ai-chat-message-group {
    align-items: flex-end;
}

.ai-chat-message {
    padding: 9px 13px;
    line-height: 1.4;
    border-radius: 16px;
    font-size: 13.5px;
    overflow-wrap: anywhere;
}

.ai-chat-message ul,
.ai-chat-message ol {
    margin: 6px 0;
    padding-left: 20px;
}

.ai-chat-message li {
    margin: 2px 0;
}

.ai-chat-message a {
    color: inherit;
    text-decoration: underline;
}

.ai-chat-message-user {
    background: var(--ai-chat-accent);
    color: var(--ai-chat-accent-text);
    border-bottom-right-radius: 3px;
}

.ai-chat-message-assistant {
    background: #fff;
    color: #24262b;
    box-shadow: 0 1px 4px rgba(15, 40, 35, 0.1);
    border-bottom-left-radius: 3px;
}

.ai-chat-message-time {
    font-size: 10.5px;
    color: #9aa3a1;
    margin-top: 3px;
    padding: 0 4px;
}

.ai-chat-typing {
    display: flex;
    gap: 4px;
    background: #fff;
    box-shadow: 0 1px 4px rgba(15, 40, 35, 0.1);
    border-radius: 16px;
    border-bottom-left-radius: 3px;
    padding: 11px 14px;
}

.ai-chat-typing span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #9aa3a1;
    animation: ai-chat-bounce 1.2s ease-in-out infinite;
}

.ai-chat-typing span:nth-child(2) { animation-delay: 0.15s; }
.ai-chat-typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes ai-chat-bounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
    30% { transform: translateY(-4px); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
    .ai-chat-bubble-dot,
    .ai-chat-typing span {
        animation: none;
    }

    .ai-chat-panel,
    .ai-chat-bubble,
    .ai-chat-close,
    .ai-chat-send {
        transition: none;
    }
}

.ai-chat-form {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    border-top: 1px solid #eceef1;
    padding: 14px;
    background: #fff;
}

.ai-chat-input {
    flex: 1;
    box-sizing: border-box;
    resize: none;
    overflow-y: hidden;
    max-height: 120px;
    min-height: 48px;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 13px 18px;
    font: 15px var(--ai-chat-font);
    line-height: 1.4;
    transition: border-color 0.15s ease;
}

.ai-chat-input:focus {
    outline: none;
    border-color: var(--ai-chat-accent);
}

.ai-chat-send {
    border: none;
    background: var(--ai-chat-accent);
    color: var(--ai-chat-accent-text);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.15s ease;
}

.ai-chat-send:hover {
    transform: scale(1.08);
}