.wa-ai-button {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 9999;
    transition: all .3s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
}

.wa-ai-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

.wa-ai-button:active {
    transform: scale(0.95);
}

.wa-ai-button svg {
    width: 32px;
    height: 32px;
    fill: #fff;
}

.wa-ai-button.pulse {
    animation: waPulse .6s ease-out;
}

@keyframes waPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.wa-ai-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 22px;
    height: 22px;
    background: #FF3B30;
    border-radius: 50%;
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0);
    transition: all .3s;
}

.wa-ai-badge.show {
    opacity: 1;
    transform: scale(1);
}

.wa-ai-badge.fade-out {
    opacity: 0;
    transform: scale(0.8);
    transition: all 1s ease-out;
}

.wa-ai-widget {
    position: fixed;
    bottom: 170px;
    right: 20px;
    width: 360px;
    height: 500px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.2);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(15px);
    pointer-events: none;
    transition: opacity .6s ease, transform .6s ease;
}

.wa-ai-widget.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.wa-ai-header {
    background: #075E54;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.wa-ai-header-back {
    color: #fff;
    cursor: pointer;
    padding: 10px;
    margin: -10px;
    margin-right: 2px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    border-radius: 50%;
}

.wa-ai-header-back:active {
    background: rgba(255, 255, 255, 0.1);
}

.wa-ai-header-back svg {
    width: 24px;
    height: 24px;
    pointer-events: none;
}

.wa-ai-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    overflow: hidden;
    transition: opacity .3s;
}

.wa-ai-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity .3s;
}

.wa-ai-header-info {
    flex: 1;
}

.wa-ai-header-name {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    transition: opacity .3s;
}

.wa-ai-header-status {
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
}

.wa-ai-chat {
    flex: 1;
    background: #ECE5DD;
    padding: 16px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.wa-ai-date {
    text-align: center;
    margin: 10px 0;
}

.wa-ai-date span {
    background: #E1F2FB;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 12px;
    color: #54656F;
}

.wa-ai-message {
    max-width: 85%;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.4;
    position: relative;
    animation: waMessageIn .3s ease;
}

@keyframes waMessageIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.wa-ai-message.received {
    background: #fff;
    align-self: flex-start;
    border-top-left-radius: 0;
}

.wa-ai-message.received::before {
    content: '';
    position: absolute;
    top: 0;
    left: -8px;
    border-width: 0 8px 8px 0;
    border-style: solid;
    border-color: transparent #fff transparent transparent;
}

.wa-ai-message.sent {
    background: #DCF8C6;
    align-self: flex-end;
    border-top-right-radius: 0;
}

.wa-ai-message.sent::before {
    content: '';
    position: absolute;
    top: 0;
    right: -8px;
    border-width: 8px 8px 0 0;
    border-style: solid;
    border-color: #DCF8C6 transparent transparent transparent;
}

.wa-ai-message-time {
    font-size: 11px;
    color: #8696a0;
    text-align: right;
    margin-top: 4px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 4px;
}

.wa-ai-message.sent .wa-ai-message-time svg {
    width: 13px;
    height: 13px;
    fill: #8696a0;
}

.wa-ai-message.sent .wa-ai-message-time svg.read {
    fill: #53bdeb;
}

.wa-ai-message a {
    color: #027eb5;
    text-decoration: none;
    font-weight: 500;
}

.wa-ai-message a:hover {
    text-decoration: underline;
}

.wa-ai-typing {
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 9px 12px;
    background: #fff;
    border-radius: 7.5px;
    align-self: flex-start;
    border-top-left-radius: 0;
    position: relative;
    box-shadow: 0 1px .5px rgba(0, 0, 0, 0.13);
}

.wa-ai-typing::before {
    content: '';
    position: absolute;
    top: 0;
    left: -8px;
    border-width: 0 8px 8px 0;
    border-style: solid;
    border-color: transparent #fff transparent transparent;
}

.wa-ai-typing span {
    width: 9px;
    height: 9px;
    background: #b3b3b3;
    border-radius: 50%;
    animation: waTyping 1.5s ease-in-out infinite;
}

.wa-ai-typing span:nth-child(2) {
    animation-delay: .15s;
}

.wa-ai-typing span:nth-child(3) {
    animation-delay: .3s;
}

@keyframes waTyping {
    0%, 100% {
        background: #b3b3b3;
        transform: scale(1);
    }
    35% {
        background: #6b6b6b;
        transform: scale(1.15);
    }
    50% {
        background: #8d8d8d;
        transform: scale(1);
    }
}

.wa-ai-input-area {
    background: #F0F2F5;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.wa-ai-input {
    flex: 1;
    background: #fff;
    border: none;
    border-radius: 24px;
    padding: 10px 16px;
    font-size: 16px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.wa-ai-input::placeholder {
    color: #8696a0;
}

.wa-ai-input:focus {
    outline: none;
    box-shadow: none;
}

.wa-ai-send {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    background: #00A884;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .2s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
}

.wa-ai-send:hover {
    background: #008f72;
}

.wa-ai-send:active {
    background: #007a5e;
    transform: scale(0.95);
}

.wa-ai-send svg {
    width: 20px;
    height: 20px;
    fill: #fff;
    pointer-events: none;
}

.wa-ai-transfer-buttons {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.wa-ai-transfer-buttons button {
    padding: 12px 20px;
    border: none;
    border-radius: 22px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    min-height: 44px;
}

.wa-ai-transfer-buttons .wa-btn-yes {
    background: #00a884;
    color: #fff;
}

.wa-ai-transfer-buttons .wa-btn-yes:hover,
.wa-ai-transfer-buttons .wa-btn-yes:active {
    background: #008f72;
}

.wa-ai-transfer-buttons .wa-btn-no {
    background: #f0f2f5;
    color: #667781;
}

.wa-ai-transfer-buttons .wa-btn-no:hover,
.wa-ai-transfer-buttons .wa-btn-no:active {
    background: #e4e6eb;
}

.wa-ai-transferring {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: #fff;
    border-radius: 8px;
    align-self: flex-start;
    border-top-left-radius: 0;
    position: relative;
    animation: waMessageIn .3s ease;
}

.wa-ai-transferring::before {
    content: '';
    position: absolute;
    top: 0;
    left: -8px;
    border-width: 0 8px 8px 0;
    border-style: solid;
    border-color: transparent #fff transparent transparent;
}

.wa-ai-transferring-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #e5e7eb;
    border-top-color: #25D366;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.wa-ai-transferring-text {
    font-size: 14px;
    color: #6b7280;
}

@media (max-width: 768px) {
    .wa-ai-widget {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100% !important;
        height: 100% !important;
        max-height: 100% !important;
        border-radius: 0 !important;
        z-index: 999999 !important;
        display: flex !important;
        flex-direction: column !important;
    }

    .wa-ai-button {
        right: 20px;
        bottom: 90px;
        width: 56px;
        height: 56px;
        z-index: 999998 !important;
    }

    .wa-ai-header {
        padding: 12px 16px;
        padding-top: max(12px, env(safe-area-inset-top));
        flex-shrink: 0;
        position: relative;
        z-index: 10;
    }

    .wa-ai-chat {
        flex: 1;
        min-height: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }

    .wa-ai-input-area {
        padding: 10px 12px;
        padding-bottom: max(10px, env(safe-area-inset-bottom));
        background: #F0F2F5;
        flex-shrink: 0;
        position: relative;
        z-index: 10;
    }

    .wa-ai-input {
        font-size: 16px !important;
        padding: 12px 16px;
        min-height: 44px;
        -webkit-appearance: none;
        border-radius: 22px;
    }

    .wa-ai-send {
        width: 44px;
        height: 44px;
        min-width: 44px;
        min-height: 44px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .wa-ai-header-back {
        padding: 8px;
        margin: -8px;
        margin-right: 4px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .wa-ai-header-back svg {
        width: 28px;
        height: 28px;
    }

    .wa-ai-transfer-buttons button {
        padding: 12px 20px;
        min-height: 44px;
        font-size: 15px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .wa-ai-message {
        max-width: 88%;
        font-size: 15px;
    }

    .wa-ai-badge {
        top: -4px;
        right: -4px;
    }
}

body.wa-chat-open {
    overflow: hidden !important;
    position: fixed !important;
    width: 100% !important;
    height: 100% !important;
}

@supports (height: 100dvh) {
    @media (max-width: 768px) {
        .wa-ai-widget.open {
            height: 100dvh !important;
        }
    }
}