/* ============================================================================
   UI3 - CHATBOX CSS
   Tubi AI NB Plugin v2.9.11
   
   Đường dẫn: tubi-ai-nb/ui3/css/ui3-chatbox.css
   
   CHANGES v2.9.11:
   - Thêm toolbar (Đọc/Lưu/In) cho tin nhắn bot
   - Cải thiện nút gửi: căn chỉnh, màu gradient đẹp
   - Bỏ hiệu ứng nháy, thêm transition mượt
   - Placeholder mới: "Hãy chia sẻ, tâm sự..."
   ============================================================================ */

/* ========== CSS VARIABLES ========== */
:root {
    --ui3-primary: #4facfe;
    --ui3-primary-dark: #3d9be8;
    --ui3-secondary: #00f2fe;
    --ui3-success: #48bb78;
    --ui3-warning: #ed8936;
    --ui3-danger: #f56565;
    --ui3-gray-100: #f7fafc;
    --ui3-gray-200: #edf2f7;
    --ui3-gray-300: #e2e8f0;
    --ui3-gray-400: #cbd5e0;
    --ui3-gray-500: #a0aec0;
    --ui3-gray-600: #718096;
    --ui3-gray-700: #4a5568;
    --ui3-gray-800: #2d3748;
    --ui3-shadow: 0 4px 20px rgba(79, 172, 254, 0.25);
    --ui3-shadow-lg: 0 8px 32px rgba(79, 172, 254, 0.3);
    --ui3-radius: 20px;
    --ui3-radius-sm: 12px;
}

/* ========== WRAPPER ========== */
.tubi-ui3-wrap { 
    position: fixed; 
    bottom: 20px; 
    right: 20px; 
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}

/* ========== NÚT TOGGLE ========== */
.tubi-ui3-toggle {
    width: 56px; 
    height: 56px; 
    display: flex; 
    align-items: center; 
    justify-content: center;
    background: linear-gradient(135deg, var(--ui3-primary) 0%, var(--ui3-secondary) 100%);
    border: none; 
    border-radius: 50%;
    box-shadow: var(--ui3-shadow-lg);
    cursor: pointer; 
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.tubi-ui3-toggle:hover {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.4);
}

.tubi-ui3-toggle:active {
    transform: scale(1.02);
}

.tubi-ui3-wrap.is-open .tubi-ui3-toggle { 
    display: none; 
}

.tubi-ui3-toggle svg { 
    width: 26px; 
    height: 26px; 
    fill: white; 
}

/* ========== FIX NÚT TOGGLE - OVERRIDE THEME ========== */
button.tubi-ui3-toggle,
.tubi-ui3-wrap button.tubi-ui3-toggle {
    width: 56px !important;
    height: 56px !important;
    border: none !important;
    border-radius: 50% !important;
    background: linear-gradient(135deg, var(--ui3-primary) 0%, var(--ui3-secondary) 100%) !important;
    padding: 0 !important;
}

button.tubi-ui3-toggle svg,
.tubi-ui3-wrap button.tubi-ui3-toggle svg {
    width: 26px !important;
    height: 26px !important;
    position: relative !important;
    display: block !important;
}

/* ========== CHATBOX ========== */
.tubi-ui3-chatbox {
    width: 380px; 
    height: 520px; 
    background: white; 
    border-radius: var(--ui3-radius);
    box-shadow: var(--ui3-shadow-lg);
    display: none; 
    flex-direction: column; 
    overflow: hidden;
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.tubi-ui3-wrap.is-open .tubi-ui3-chatbox { 
    display: flex; 
}

/* ========== HEADER ========== */
.tubi-ui3-header {
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    padding: 10px 16px; 
    background: linear-gradient(135deg, var(--ui3-primary) 0%, var(--ui3-secondary) 100%);
    color: white; 
}

.tubi-ui3-header-info { 
    display: flex; 
    align-items: center; 
    gap: 12px; 
}

.tubi-ui3-avatar { 
    width: 32px; 
    height: 32px; 
    background: rgba(255,255,255,0.2); 
    border-radius: 50%; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    overflow: hidden;
    backdrop-filter: blur(10px);
    font-size: 18px;
}

.tubi-ui3-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tubi-ui3-title { 
    font-size: 16px; 
    font-weight: 600; 
    letter-spacing: -0.3px;
}

.tubi-ui3-close { 
    width: 30px; 
    height: 30px; 
    background: rgba(255,255,255,0.15); 
    border: none; 
    border-radius: 50%; 
    color: white; 
    font-size: 16px; 
    cursor: pointer; 
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
}

.tubi-ui3-close:hover {
    background: rgba(255,255,255,0.25);
    transform: rotate(90deg);
}

/* ========== FIX NÚT ĐÓNG - OVERRIDE THEME ========== */
#tubi-ui3-chatbox .tubi-ui3-close,
.tubi-ui3-wrap .tubi-ui3-close {
    border: none !important;
    border-radius: 50% !important;
    background: rgba(255,255,255,0.15) !important;
    width: 30px !important;
    height: 30px !important;
    padding: 0 !important;
}

#tubi-ui3-chatbox .tubi-ui3-close:hover,
.tubi-ui3-wrap .tubi-ui3-close:hover {
    background: rgba(255,255,255,0.25) !important;
    border: none !important;
}

/* ========== BỘ ĐẾM KÝ TỰ TRONG HEADER ========== */
.tubi-ui3-header .tubi-ui3-char-counter {
    display: inline-block;
    margin-left: 8px;
    font-size: 11px;
    color: rgba(255,255,255,0.7);
    font-weight: 500;
    padding: 2px 8px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
}

.tubi-ui3-header .tubi-ui3-char-counter.is-warning {
    color: #ffd93d;
    background: rgba(255,217,61,0.2);
}

.tubi-ui3-header .tubi-ui3-char-counter.is-over {
    color: #ff6b6b;
    background: rgba(255,107,107,0.2);
}

/* Ẩn counter cũ ở input */
.tubi-ui3-input-container .tubi-ui3-char-counter {
    display: none;
}

/* ========== MESSAGES ========== */
.tubi-ui3-messages { 
    flex: 1; 
    overflow-y: auto; 
    overflow-x: hidden;
    padding: 20px; 
    background: var(--ui3-gray-100);
    scroll-behavior: smooth;
}

.tubi-ui3-messages::-webkit-scrollbar {
    width: 6px;
}

.tubi-ui3-messages::-webkit-scrollbar-track {
    background: transparent;
}

.tubi-ui3-messages::-webkit-scrollbar-thumb {
    background: var(--ui3-gray-300);
    border-radius: 3px;
}

.tubi-ui3-message { 
    display: flex; 
    gap: 10px; 
    margin-bottom: 16px;
    animation: fadeIn 0.3s ease;
}

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

.tubi-ui3-message-avatar { 
    width: 36px; 
    height: 36px; 
    background: white; 
    border-radius: 50%; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    overflow: hidden;
}

.tubi-ui3-message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========== MESSAGE CONTENT WRAPPER ========== */
.tubi-ui3-message-content {
    max-width: calc(100% - 46px);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tubi-ui3-message-bubble { 
    padding: 12px 16px; 
    border-radius: 18px; 
    font-size: 15px; 
    line-height: 1.5;
    word-wrap: break-word;
}

.tubi-ui3-message-bot .tubi-ui3-message-bubble { 
    background: white; 
    color: var(--ui3-gray-800); 
    border-bottom-left-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.tubi-ui3-message-user { 
    flex-direction: row-reverse; 
}

.tubi-ui3-message-user .tubi-ui3-message-content {
    align-items: flex-end;
}

.tubi-ui3-message-user .tubi-ui3-message-bubble { 
    background: linear-gradient(135deg, var(--ui3-primary) 0%, var(--ui3-secondary) 100%);
    color: var(--ui3-gray-800); 
    border-bottom-right-radius: 6px;
}

/* ========== TOOLBAR (Đọc/Lưu/In) ========== */
.tubi-ui3-toolbar {
    display: flex;
    gap: 4px;
    padding-top: 4px;
}

.tubi-ui3-toolbar-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 500;
    color: var(--ui3-gray-500);
    background: transparent;
    border: 1px solid var(--ui3-gray-200);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.tubi-ui3-toolbar-btn:hover {
    color: var(--ui3-primary);
    border-color: var(--ui3-primary);
    background: rgba(102, 126, 234, 0.05);
}

.tubi-ui3-toolbar-btn:active {
    transform: scale(0.95);
}

.tubi-ui3-toolbar-btn.is-playing {
    color: var(--ui3-warning);
    border-color: var(--ui3-warning);
    background: rgba(237, 137, 54, 0.1);
}

.tubi-ui3-toolbar-btn.is-success {
    color: var(--ui3-success);
    border-color: var(--ui3-success);
    background: rgba(72, 187, 120, 0.1);
}

/* Override theme for toolbar buttons */
.tubi-ui3-wrap .tubi-ui3-toolbar-btn,
button.tubi-ui3-toolbar-btn {
    border: 1px solid var(--ui3-gray-200) !important;
    border-radius: 16px !important;
    background: transparent !important;
    padding: 6px 10px !important;
    min-width: auto !important;
    height: auto !important;
    color: var(--ui3-gray-500) !important;
}

.tubi-ui3-wrap .tubi-ui3-toolbar-btn:hover,
button.tubi-ui3-toolbar-btn:hover {
    border-color: var(--ui3-primary) !important;
    background: rgba(102, 126, 234, 0.05) !important;
    color: var(--ui3-primary) !important;
}

.tubi-ui3-wrap .tubi-ui3-toolbar-btn:active,
button.tubi-ui3-toolbar-btn:active,
.tubi-ui3-wrap .tubi-ui3-toolbar-btn:focus,
button.tubi-ui3-toolbar-btn:focus {
    color: var(--ui3-gray-500) !important;
    background: transparent !important;
}

.tubi-ui3-wrap .tubi-ui3-toolbar-btn.is-playing,
button.tubi-ui3-toolbar-btn.is-playing {
    color: var(--ui3-warning) !important;
    border-color: var(--ui3-warning) !important;
    background: rgba(237, 137, 54, 0.1) !important;
}

.tubi-ui3-wrap .tubi-ui3-toolbar-btn.is-success,
button.tubi-ui3-toolbar-btn.is-success {
    color: var(--ui3-success) !important;
    border-color: var(--ui3-success) !important;
    background: rgba(72, 187, 120, 0.1) !important;
}

/* ========== INPUT AREA ========== */
.tubi-ui3-input-area { 
    padding: 16px 20px;
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    background: white; 
    border-top: 1px solid var(--ui3-gray-200);
}

.tubi-ui3-input-wrapper { 
    display: flex; 
    gap: 12px; 
    align-items: center;
}

.tubi-ui3-input-container {
    flex: 1;
    position: relative;
}

.tubi-ui3-input { 
    width: 100%;
    min-height: 48px; 
    max-height: 120px;
    padding: 12px 18px; 
    border: 2px solid var(--ui3-gray-200); 
    border-radius: 24px; 
    font-size: 15px; 
    resize: none; 
    font-family: inherit;
    outline: none;
    transition: all 0.2s ease;
    background: var(--ui3-gray-100);
    color: var(--ui3-gray-800);
    line-height: 1.4;
}

.tubi-ui3-input:focus {
    border-color: var(--ui3-primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.tubi-ui3-input.is-over-limit {
    border-color: var(--ui3-danger);
    box-shadow: 0 0 0 4px rgba(245, 101, 101, 0.1);
}

.tubi-ui3-input::placeholder {
    color: var(--ui3-gray-400);
}

/* ========== NÚT GỬI - THIẾT KẾ MỚI ========== */
.tubi-ui3-send { 
    width: 48px; 
    height: 48px; 
    background: var(--ui3-gray-300);
    border: none; 
    border-radius: 50%; 
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.tubi-ui3-send:not(:disabled) {
    background: linear-gradient(135deg, var(--ui3-primary) 0%, var(--ui3-secondary) 100%);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.tubi-ui3-send:not(:disabled):hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.tubi-ui3-send:not(:disabled):active {
    transform: scale(0.98);
}

.tubi-ui3-send svg {
    width: 22px;
    height: 22px;
    fill: white;
    transition: transform 0.2s ease;
}

.tubi-ui3-send:not(:disabled):hover svg {
    transform: translateX(2px);
}

/* ========== FIX NÚT GỬI - OVERRIDE THEME ========== */
button#tubi-ui3-send,
#tubi-ui3-chatbox button.tubi-ui3-send,
.tubi-ui3-wrap button.tubi-ui3-send,
#tubi-ui3-chatbox .tubi-ui3-send,
.tubi-ui3-wrap .tubi-ui3-send {
    width: 48px !important;
    height: 48px !important;
    border-radius: 50% !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
}

button#tubi-ui3-send:disabled,
#tubi-ui3-chatbox button.tubi-ui3-send:disabled,
.tubi-ui3-wrap button.tubi-ui3-send:disabled {
    background: var(--ui3-gray-300) !important;
    box-shadow: none !important;
    cursor: not-allowed !important;
    transform: none !important;
}

button#tubi-ui3-send:not(:disabled),
#tubi-ui3-chatbox button.tubi-ui3-send:not(:disabled),
.tubi-ui3-wrap button.tubi-ui3-send:not(:disabled) {
    background: linear-gradient(135deg, var(--ui3-primary) 0%, var(--ui3-secondary) 100%) !important;
}

/* ========== TRẠNG THÁI ĐANG XỬ LÝ ========== */
.tubi-ui3-send.is-processing {
    pointer-events: none;
}

.tubi-ui3-send.is-processing svg {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ========== TYPING INDICATOR ========== */
.tubi-ui3-typing {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.tubi-ui3-typing.is-visible {
    display: flex;
}

.tubi-ui3-typing-dots {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: white;
    border-radius: 18px;
    border-bottom-left-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.tubi-ui3-typing-dot {
    width: 8px;
    height: 8px;
    background: var(--ui3-gray-400);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}

.tubi-ui3-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.tubi-ui3-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

/* ========== RESPONSIVE MOBILE ========== */
@media (max-width: 480px) {
    .tubi-ui3-wrap {
        bottom: 15px;
        right: 15px;
    }
    
    .tubi-ui3-wrap.is-open {
        bottom: 0;
        right: 0;
        left: 0;
        top: auto;
    }
    
    .tubi-ui3-chatbox {
        width: 100vw;
        height: 85vh;
        max-height: 85vh;
        border-radius: var(--ui3-radius) var(--ui3-radius) 0 0;
    }
    
    .tubi-ui3-header {
        padding: 14px 16px;
    }
    
    .tubi-ui3-messages {
        padding: 16px;
        max-height: calc(85vh - 140px);
    }
    
    .tubi-ui3-input-area {
        padding: 12px 16px;
        padding-bottom: max(12px, env(safe-area-inset-bottom));
    }
    
    .tubi-ui3-input {
        font-size: 16px;
        min-height: 44px;
        padding: 10px 16px;
    }
    
    .tubi-ui3-send {
        width: 44px;
        height: 44px;
    }
    
    .tubi-ui3-message-bubble {
        font-size: 15px;
    }
    
    .tubi-ui3-toolbar-btn {
        padding: 5px 8px;
        font-size: 11px;
    }
}