/* ============================================
   ATS V&I ASSISTANT - PRODUCTION-SAFE CSS
   Tối ưu để chống conflict với mọi WordPress Theme
   ============================================ */

/* --- ULTRA RESET - Chống mọi theme override --- */
#vi-chat-launcher,
#vi-chat-launcher *,
#vi-chat-window,
#vi-chat-window *,
#vi-chat-window *::before,
#vi-chat-window *::after {
    box-sizing: border-box !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif !important;
    letter-spacing: normal !important;
    text-transform: none !important;
    text-decoration: none !important;
    font-style: normal !important;
    word-spacing: normal !important;
    text-shadow: none !important;
    -webkit-font-smoothing: antialiased !important;
    -moz-osx-font-smoothing: grayscale !important;
}

/* ========== CHAT LAUNCHER BUTTON ========== */
#vi-chat-launcher {
    all: unset !important; /* Reset hoàn toàn */
    position: fixed !important; 
    bottom: 20px !important; 
    right: 20px !important;
    background: linear-gradient(135deg, #0066cc 0%, #004a99 100%) !important; 
    background-color: #0066cc !important;
    color: #ffffff !important;
    padding: 12px 20px !important; 
    border-radius: 30px !important; 
    cursor: pointer !important;
    box-shadow: 0 4px 20px rgba(0, 102, 204, 0.4) !important;
    display: flex !important; 
    align-items: center !important; 
    gap: 8px !important;
    z-index: 2147483647 !important; /* Max z-index */
    line-height: 1.4 !important;
    transition: all 0.3s ease !important;
    border: none !important;
    outline: none !important;
    margin: 0 !important;
    float: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
}

#vi-chat-launcher:hover {
    transform: translateY(-2px) scale(1.02) !important;
    box-shadow: 0 6px 25px rgba(0, 102, 204, 0.5) !important;
    background: linear-gradient(135deg, #0077ee 0%, #0055aa 100%) !important;
}

#vi-chat-launcher:active {
    transform: translateY(0) scale(0.98) !important;
}

#vi-chat-launcher:focus {
    outline: none !important;
    box-shadow: 0 4px 20px rgba(0, 102, 204, 0.4), 0 0 0 3px rgba(0, 102, 204, 0.3) !important;
}

#vi-chat-launcher svg {
    width: 24px !important;
    height: 24px !important;
    min-width: 24px !important;
    min-height: 24px !important;
    stroke: #ffffff !important;
    fill: none !important;
    display: inline-block !important;
    vertical-align: middle !important;
}

#vi-chat-launcher span {
    font-size: 14px !important;
    font-weight: 600 !important;
    color: #ffffff !important;
    line-height: 1.4 !important;
    display: inline-block !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* ========== CHAT WINDOW CONTAINER ========== */
#vi-chat-window {
    all: unset !important; /* Reset hoàn toàn */
    position: fixed !important; 
    bottom: 80px !important; 
    right: 20px !important;
    width: 370px !important; 
    height: 550px !important; 
    max-height: 85vh !important;
    background: #ffffff !important; 
    background-color: #ffffff !important;
    border-radius: 16px !important;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15) !important;
    display: flex !important; 
    flex-direction: column !important;
    z-index: 2147483647 !important;
    overflow: hidden !important;
    border: 1px solid #e0e0e0 !important;
    opacity: 1 !important;
    transform: translateY(0) scale(1) !important;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

#vi-chat-window.vi-hidden { 
    display: flex !important;
    opacity: 0 !important;
    transform: translateY(20px) scale(0.95) !important;
    pointer-events: none !important;
    visibility: hidden !important;
}

/* ========== HEADER ========== */
#vi-chat-window .vi-header {
    all: unset !important;
    display: flex !important; 
    background: linear-gradient(135deg, #0066cc 0%, #004a99 100%) !important; 
    background-color: #0066cc !important;
    padding: 16px 18px !important; 
    justify-content: space-between !important; 
    align-items: center !important;
    flex-direction: row !important;
    min-height: 65px !important;
    width: 100% !important;
    flex-shrink: 0 !important;
    box-sizing: border-box !important;
}

#vi-chat-window .vi-header-info {
    display: flex !important; 
    flex-direction: column !important; 
    align-items: flex-start !important;
    gap: 4px !important;
}

#vi-chat-window .vi-header h3 { 
    all: unset !important;
    display: block !important;
    font-size: 17px !important; 
    font-weight: 700 !important; 
    color: #ffffff !important; 
    line-height: 1.2 !important; 
    margin: 0 !important;
    padding: 0 !important;
}

/* ========== STATUS BADGE ========== */
#vi-chat-window #vi-system-status-wrapper {
    display: block !important;
    min-height: 20px !important;
}

#vi-chat-window .vi-badge {
    all: unset !important;
    display: inline-block !important;
    font-size: 11px !important; 
    padding: 3px 10px !important; 
    border-radius: 12px !important;
    line-height: 1.4 !important;
    font-weight: 500 !important;
    transition: all 0.2s ease !important;
}

#vi-chat-window .vi-badge.loading { 
    background: rgba(255, 255, 255, 0.25) !important; 
    background-color: rgba(255, 255, 255, 0.25) !important;
    color: #ffffff !important; 
}

#vi-chat-window .vi-badge.online { 
    background: rgba(255, 255, 255, 0.95) !important; 
    background-color: rgba(255, 255, 255, 0.95) !important;
    color: #0066cc !important; 
    font-weight: 600 !important; 
}

#vi-chat-window .vi-badge.guest {
    background: rgba(255, 255, 255, 0.2) !important;
    background-color: rgba(255, 255, 255, 0.2) !important;
    color: #ffffff !important;
}

#vi-chat-window .vi-badge.error { 
    background: #ffebeb !important; 
    background-color: #ffebeb !important;
    color: #cc0000 !important; 
    font-weight: 600 !important;
}

#vi-chat-window .vi-badge:empty {
    display: none !important;
}

/* ========== CLOSE BUTTON ========== */
#vi-chat-window .vi-close-btn { 
    all: unset !important;
    display: flex !important; 
    align-items: center !important;
    justify-content: center !important;
    background: rgba(255, 255, 255, 0.1) !important; 
    background-color: rgba(255, 255, 255, 0.1) !important;
    border: none !important; 
    color: #ffffff !important; 
    cursor: pointer !important; 
    padding: 8px !important; 
    border-radius: 8px !important;
    width: 36px !important; 
    height: 36px !important;
    min-width: 36px !important;
    min-height: 36px !important;
    transition: background 0.2s ease !important;
    box-sizing: border-box !important;
}

#vi-chat-window .vi-close-btn:hover {
    background: rgba(255, 255, 255, 0.25) !important;
    background-color: rgba(255, 255, 255, 0.25) !important;
}

#vi-chat-window .vi-close-btn:focus {
    outline: none !important;
}

#vi-chat-window .vi-close-btn svg {
    width: 20px !important;
    height: 20px !important;
    min-width: 20px !important;
    min-height: 20px !important;
    stroke: #ffffff !important;
    fill: none !important;
    display: block !important;
}

/* ========== MESSAGE BODY ========== */
#vi-chat-window .vi-body { 
    all: unset !important;
    display: block !important;
    flex: 1 1 auto !important; 
    padding: 16px !important; 
    overflow-y: auto !important; 
    overflow-x: hidden !important;
    background: #f8f9fa !important; 
    background-color: #f8f9fa !important;
    box-sizing: border-box !important;
}

#vi-chat-window .vi-body::-webkit-scrollbar {
    width: 6px !important;
}
#vi-chat-window .vi-body::-webkit-scrollbar-track {
    background: transparent !important;
}
#vi-chat-window .vi-body::-webkit-scrollbar-thumb {
    background: #cccccc !important;
    border-radius: 3px !important;
}

#vi-chat-window .vi-body::after { 
    content: "" !important; 
    display: table !important; 
    clear: both !important; 
}

/* ========== MESSAGES ========== */
#vi-chat-window .vi-message { 
    all: unset !important;
    display: block !important;
    max-width: 82% !important; 
    padding: 12px 16px !important; 
    border-radius: 16px !important; 
    font-size: 14px !important; 
    line-height: 1.55 !important; 
    margin-bottom: 12px !important;
    clear: both !important;
    position: relative !important;
    word-wrap: break-word !important;
    word-break: break-word !important;
    animation: viMessageSlide 0.2s ease !important;
    box-sizing: border-box !important;
}

@keyframes viMessageSlide {
    from { 
        opacity: 0; 
        transform: translateY(8px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

#vi-chat-window .vi-message.bot-message { 
    background: #ffffff !important; 
    background-color: #ffffff !important;
    color: #333333 !important; 
    float: left !important; 
    border-bottom-left-radius: 4px !important; 
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08) !important;
}

#vi-chat-window .vi-message.user-message { 
    background: linear-gradient(135deg, #0066cc 0%, #004a99 100%) !important; 
    background-color: #0066cc !important;
    color: #ffffff !important; 
    float: right !important; 
    border-bottom-right-radius: 4px !important; 
}

/* ========== TYPING INDICATOR ========== */
#vi-chat-window .vi-typing-indicator {
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
    padding: 4px 0 !important;
}

#vi-chat-window .vi-typing-indicator span {
    all: unset !important;
    display: inline-block !important;
    width: 8px !important;
    height: 8px !important;
    min-width: 8px !important;
    min-height: 8px !important;
    background: #0066cc !important;
    background-color: #0066cc !important;
    border-radius: 50% !important;
    animation: viTypingBounce 1.4s infinite ease-in-out !important;
}

#vi-chat-window .vi-typing-indicator span:nth-child(1) { animation-delay: 0s !important; }
#vi-chat-window .vi-typing-indicator span:nth-child(2) { animation-delay: 0.2s !important; }
#vi-chat-window .vi-typing-indicator span:nth-child(3) { animation-delay: 0.4s !important; }

@keyframes viTypingBounce {
    0%, 60%, 100% { 
        transform: translateY(0); 
        opacity: 0.4;
    }
    30% { 
        transform: translateY(-6px); 
        opacity: 1;
    }
}

/* ========== INPUT AREA ========== */
#vi-chat-window .vi-input-area {
    all: unset !important;
    display: flex !important; 
    align-items: center !important; 
    padding: 14px 16px !important; 
    border-top: 1px solid #eaeaea !important; 
    background: #ffffff !important;
    background-color: #ffffff !important;
    gap: 10px !important;
    min-height: 68px !important;
    flex-shrink: 0 !important;
    box-sizing: border-box !important;
    width: 100% !important;
}

/* INPUT TEXTAREA - Specificity cực cao */
#vi-chat-window .vi-input-area #vi-user-input,
#vi-chat-window #vi-user-input,
textarea#vi-user-input {
    all: unset !important;
    display: block !important;
    flex: 1 1 auto !important; 
    width: auto !important;
    min-width: 0 !important;
    margin: 0 !important;
    background: #f5f5f5 !important;
    background-color: #f5f5f5 !important;
    border: 1px solid transparent !important; 
    border-radius: 22px !important;
    padding: 10px 18px !important; 
    font-size: 14px !important; 
    color: #333333 !important;
    height: 44px !important; 
    min-height: 44px !important;
    max-height: 44px !important;
    line-height: 22px !important;
    box-shadow: none !important;
    outline: none !important;
    resize: none !important;
    transition: border-color 0.2s ease, background-color 0.2s ease !important;
    box-sizing: border-box !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    overflow: hidden !important;
}

#vi-chat-window #vi-user-input:focus,
textarea#vi-user-input:focus {
    border-color: #0066cc !important;
    background: #ffffff !important;
    background-color: #ffffff !important;
    outline: none !important;
    box-shadow: none !important;
}

#vi-chat-window #vi-user-input:disabled,
textarea#vi-user-input:disabled {
    background: #e9e9e9 !important;
    background-color: #e9e9e9 !important;
    color: #999999 !important;
    cursor: not-allowed !important;
}

#vi-chat-window #vi-user-input::placeholder,
textarea#vi-user-input::placeholder {
    color: #999999 !important;
    opacity: 1 !important;
}

/* SEND BUTTON - Specificity CỰC CAO để chống theme override */
#vi-chat-window .vi-input-area #vi-send-btn,
#vi-chat-window #vi-send-btn,
#vi-chat-window button#vi-send-btn,
button#vi-send-btn {
    all: unset !important;
    display: flex !important; 
    justify-content: center !important; 
    align-items: center !important;
    background: linear-gradient(135deg, #0066cc 0%, #004a99 100%) !important; 
    background-color: #0066cc !important;
    width: 44px !important; 
    height: 44px !important; 
    min-width: 44px !important;
    min-height: 44px !important;
    max-width: 44px !important;
    max-height: 44px !important;
    border-radius: 50% !important; 
    border: none !important;
    padding: 0 !important; 
    margin: 0 !important;
    cursor: pointer !important; 
    box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3) !important;
    transition: all 0.2s ease !important;
    flex-shrink: 0 !important;
    box-sizing: border-box !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    position: relative !important;
    overflow: visible !important;
}

#vi-chat-window #vi-send-btn:hover:not(:disabled),
button#vi-send-btn:hover:not(:disabled) {
    transform: scale(1.05) !important;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.4) !important;
    background: linear-gradient(135deg, #0077ee 0%, #0055aa 100%) !important;
    background-color: #0077ee !important;
}

#vi-chat-window #vi-send-btn:active:not(:disabled),
button#vi-send-btn:active:not(:disabled) {
    transform: scale(0.95) !important;
}

#vi-chat-window #vi-send-btn:focus,
button#vi-send-btn:focus {
    outline: none !important;
    box-shadow: 0 2px 8px rgba(0, 102, 204, 0.3), 0 0 0 3px rgba(0, 102, 204, 0.2) !important;
}

#vi-chat-window #vi-send-btn:disabled,
button#vi-send-btn:disabled {
    background: #cccccc !important;
    background-color: #cccccc !important;
    background-image: none !important;
    cursor: not-allowed !important;
    box-shadow: none !important;
    opacity: 0.7 !important;
}

/* Send button SVG */
#vi-chat-window #vi-send-btn svg,
button#vi-send-btn svg {
    width: 18px !important; 
    height: 18px !important; 
    min-width: 18px !important;
    min-height: 18px !important;
    stroke: #ffffff !important; 
    fill: none !important; 
    display: block !important;
    pointer-events: none !important;
}

/* ========== REGISTER OVERLAY ========== */
#vi-chat-window #vi-register-overlay {
    all: unset !important;
    position: absolute !important; 
    top: 0 !important; 
    left: 0 !important; 
    right: 0 !important; 
    bottom: 0 !important;
    background: rgba(255, 255, 255, 0.97) !important; 
    background-color: rgba(255, 255, 255, 0.97) !important;
    z-index: 100 !important;
    display: flex !important; 
    align-items: center !important; 
    justify-content: center !important;
    padding: 20px !important;
    animation: viOverlayFade 0.25s ease !important;
    box-sizing: border-box !important;
}

#vi-chat-window #vi-register-overlay.vi-hidden {
    display: none !important;
}

@keyframes viOverlayFade {
    from { opacity: 0; }
    to { opacity: 1; }
}

#vi-chat-window .vi-register-content {
    width: 100% !important;
    max-width: 280px !important;
    text-align: center !important;
}

#vi-chat-window .vi-register-content h4 {
    all: unset !important;
    display: block !important;
    font-size: 18px !important;
    font-weight: 700 !important;
    color: #333333 !important;
    margin: 0 0 10px 0 !important;
    padding: 0 !important;
    line-height: 1.3 !important;
}

#vi-chat-window .vi-register-content p {
    all: unset !important;
    display: block !important;
    font-size: 14px !important;
    color: #666666 !important;
    margin: 0 0 20px 0 !important;
    line-height: 1.5 !important;
    padding: 0 !important;
}

#vi-chat-window #vi-register-form {
    display: flex !important;
    flex-direction: column !important;
    gap: 12px !important;
}

/* Register form inputs */
#vi-chat-window .vi-register-content input[type="text"],
#vi-chat-window .vi-register-content input[type="email"],
#vi-chat-window .vi-register-content input[type="tel"],
#vi-chat-window #vi-register-form input { 
    all: unset !important;
    display: block !important; 
    width: 100% !important; 
    height: 44px !important; 
    min-height: 44px !important;
    padding: 10px 14px !important; 
    border: 1px solid #dddddd !important;
    border-radius: 8px !important;
    font-size: 14px !important;
    color: #333333 !important;
    background: #ffffff !important;
    background-color: #ffffff !important;
    outline: none !important;
    transition: border-color 0.2s ease !important;
    box-sizing: border-box !important;
    -webkit-appearance: none !important;
}

#vi-chat-window .vi-register-content input:focus,
#vi-chat-window #vi-register-form input:focus {
    border-color: #0066cc !important;
    outline: none !important;
}

#vi-chat-window .vi-register-content input::placeholder,
#vi-chat-window #vi-register-form input::placeholder {
    color: #999999 !important;
    opacity: 1 !important;
}

/* Register button */
#vi-chat-window #vi-reg-btn,
#vi-chat-window button#vi-reg-btn,
button#vi-reg-btn {
    all: unset !important;
    display: block !important;
    width: 100% !important; 
    background: linear-gradient(135deg, #0066cc 0%, #004a99 100%) !important; 
    background-color: #0066cc !important;
    color: #ffffff !important;
    padding: 12px 20px !important; 
    border: none !important; 
    border-radius: 8px !important;
    font-size: 15px !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    margin-top: 4px !important;
    box-sizing: border-box !important;
    text-align: center !important;
    -webkit-appearance: none !important;
}

#vi-chat-window #vi-reg-btn:hover:not(:disabled),
button#vi-reg-btn:hover:not(:disabled) {
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3) !important;
    background: linear-gradient(135deg, #0077ee 0%, #0055aa 100%) !important;
}

#vi-chat-window #vi-reg-btn:disabled,
button#vi-reg-btn:disabled {
    background: #999999 !important;
    background-color: #999999 !important;
    background-image: none !important;
    cursor: not-allowed !important;
    opacity: 0.8 !important;
}

#vi-chat-window .vi-error-text {
    color: #cc0000 !important;
    font-size: 13px !important;
    margin-top: 10px !important;
    min-height: 18px !important;
    display: block !important;
}

/* ========== MOBILE RESPONSIVE ========== */
@media screen and (max-width: 480px) {
    #vi-chat-launcher {
        bottom: 15px !important;
        right: 15px !important;
        padding: 12px !important;
        border-radius: 50% !important;
        width: 50px !important;
        height: 50px !important;
        justify-content: center !important;
    }
    
    #vi-chat-launcher span {
        display: none !important;
    }
    
    #vi-chat-window {
        bottom: 0 !important;
        right: 0 !important;
        left: 0 !important;
        top: 0 !important;
        width: 100% !important;
        height: 100% !important;
        max-height: 100% !important;
        border-radius: 0 !important;
        border: none !important;
    }
    
    #vi-chat-window .vi-header {
        border-radius: 0 !important;
    }
    
    #vi-chat-window .vi-message {
        max-width: 88% !important;
    }
}

/* ========== THEME CONFLICT OVERRIDES ========== */
/* Chống các common WordPress theme patterns */

#vi-chat-window button,
#vi-chat-window input,
#vi-chat-window textarea,
#vi-chat-window select {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
    font-size: inherit !important;
}

#vi-chat-window a {
    color: #0066cc !important;
    text-decoration: underline !important;
}

#vi-chat-window a:hover {
    color: #004a99 !important;
}

/* Prevent theme button resets */
#vi-chat-window button:not(.vi-close-btn) {
    background-image: linear-gradient(135deg, #0066cc 0%, #004a99 100%) !important;
}

/* Fix for some themes that hide overflow */
#vi-chat-window,
#vi-chat-window .vi-body {
    overflow-anchor: none !important;
}