/**
 * BizCity WebChat Widget - CSS Styles
 * Ported từ bizgpt-agent/style_float.php với đầy đủ tính năng
 */

:root {
    --bizchat-primary: #1976e7;
    --bizchat-primary-hover: #1565d8;
    --bizchat-primary-light: #dbeafe;
    --bizchat-bg-primary: #ffffff;
    --bizchat-bg-secondary: #f6f7fb;
    --bizchat-bg-tertiary: #e4e6eb;
    --bizchat-text-primary: #1b1b23;
    --bizchat-text-secondary: #6b7280;
    --bizchat-text-tertiary: #9ca3af;
    --bizchat-border: #ececec;
    --bizchat-success: #10b981;
    --bizchat-error: #d02828;
    --bizchat-warning: #f59e0b;
    --bizchat-shadow: 0 5px 32px rgba(36,54,117,0.13), 0 2px 10px rgba(0,0,0,0.04);
    --bizchat-radius-full: 50%;
    --bizchat-kb: 0px; /* JS set for keyboard */
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ========================= 
   Float Button 
   ========================= */
#bizchat-float-btn {
    position: fixed;
    right: 88px;
    bottom: 75px;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--bizchat-primary);
    box-shadow: 0 8px 38px 0 #215bf142, 0 2px 14px #215bfa22;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 99999;
    border: none;
    animation: bizchat-bounce 1.9s cubic-bezier(.22,1,.36,1) infinite alternate;
    transition: box-shadow 0.32s, transform 0.20s;
}

#bizchat-float-btn img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: block;
    box-shadow: 0 2px 8px #215bfa13;
    pointer-events: none;
    margin: 0 auto;
}

#bizchat-float-btn span {
    font-size: 28px;
}

#bizchat-float-btn:hover {
    box-shadow: 0 0 44px 10px #1976e799, 0 8px 30px #215bfa22;
    transform: scale(1.085) rotate(-4deg);
    animation-play-state: paused;
}

#bizchat-float-btn::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: radial-gradient(rgba(45,116,255,0.17) 40%, rgba(40,110,255,0.02) 92%);
    animation: bizchat-pulse 2.6s cubic-bezier(.4,0,.4,1) infinite;
    z-index: -1;
}

@keyframes bizchat-bounce {
    0% { transform: translateY(0px) scale(1); }
    70% { transform: translateY(-10px) scale(1.05); }
    80% { transform: translateY(-14px) scale(1.07); }
    100% { transform: translateY(-7px) scale(0.97); }
}

@keyframes bizchat-pulse {
    0% { opacity: .48; transform: translate(-50%,-50%) scale(1); }
    65% { opacity: .26; }
    100% { opacity: .18; transform: translate(-50%,-50%) scale(1.18); }
}

/* ========================= 
   Chat Window 
   ========================= */
#bizchat-window {
    position: fixed;
    right: 30px;
    bottom: 120px;
    width: 370px;
    max-width: 100vw;
    min-width: 260px;
    max-height: 70vh;
    background: #fff;
    z-index: 99999;
    border-radius: 18px;
    box-shadow: var(--bizchat-shadow);
    font-family: "Segoe UI", "Arial", sans-serif;
    overflow: hidden;
    display: none;
    flex-direction: column;
    transition: width .35s, height .35s, left .35s, top .35s;
}

#bizchat-window.active {
    display: flex !important;
}

#bizchat-window.bizchat-hidden {
    display: none !important;
}

#bizchat-window.bizchat-maximized {
    width: 85vw !important;
    max-width: 960px !important;
    height: 80vh !important;
    max-height: 740px !important;
    left: 50% !important;
    top: 50% !important;
    right: auto !important;
    bottom: auto !important;
    transform: translate(-50%,-50%) !important;
    border-radius: 20px;
}

/* ========================= 
   Header 
   ========================= */
.bizchat-header {
    background: #1859ab;
    color: #fff;
    font-size: 15px;
    padding: 0px 10px 0px 12px;
    font-weight: 700;
    border-radius: 18px 18px 0 0;
    display: flex;
    align-items: center;
    gap: 10px;
    height: 55px;
}

.bizchat-header > span {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    line-height: 1.2;
}

.bizchat-header-actions {
    align-items: center;
    gap: 6px;
    height:65px;
}

.bizchat-header-btn {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    line-height: 1;
    padding: 0 6px;
    transition: opacity .18s;
}

.bizchat-header-btn:hover {
    opacity: .85;
}

/* ========================= 
   Messages Area 
   ========================= */
.bizchat-messages {
    flex: 1;
    width: 100%;
    background: #ffffff;
    overflow-y: auto;
    padding: 24px 14px 14px 18px;
    min-height: 66px;
    box-sizing: border-box;
    -webkit-overflow-scrolling: touch;
}

/* ========================= 
   Message Bubbles 
   ========================= */
.bizchat-message {
    display: flex;
    align-items: flex-end;
    margin-bottom: 13px;
    max-width: 98%;
}

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

.bizchat-message.bot {
    justify-content: flex-start;
    flex-direction: row;
}

.bizchat-message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bizchat-primary-light);
    color: #357;
    font-size: 21px;
    font-weight: 700;
    margin: 0 7px;
    box-shadow: 0 1.5px 5px rgba(36,54,117,.08);
    flex-shrink: 0;
    overflow: hidden;
}

.bizchat-message.bot .bizchat-message-avatar {
    background: #e3e8f7;
}

.bizchat-message.user .bizchat-message-avatar {
    background: var(--bizchat-primary);
    color: #fff;
    margin-left: 12px;
    margin-right: 0;
}

.bizchat-message-content {
    max-width: 70vw;
}

.bizchat-message-bubble {
    padding: 12px 18px;
    border-radius: 21px;
    background: #e4e6eb;
    color: #222;
    font-size: 16px;
    font-weight: 500;
    max-width: 100%;
    min-width: 32px;
    word-break: break-word;
    line-height: 1.62;
    box-shadow: 0 2px 9px rgba(30,70,130,0.03);
    white-space: pre-line;
}

.bizchat-message.user .bizchat-message-bubble {
    background: var(--bizchat-primary);
    color: #fff;
    border-bottom-right-radius: 8px;
    border-bottom-left-radius: 21px;
    margin-right: 2px;
    text-align: left;
}

.bizchat-message.bot .bizchat-message-bubble {
    background: #e5eefd;
    color: #184;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 21px;
    margin-left: 1.5px;
    text-align: left;
}

.bizchat-message-time {
    font-size: 11px;
    color: var(--bizchat-text-tertiary);
    margin-top: 4px;
    padding: 0 4px;
}

/* Typing indicator */
.bizchat-typing {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 18px;
    background: #e5eefd;
    border-radius: 21px;
    border-bottom-left-radius: 8px;
}

.bizchat-typing-dot {
    width: 8px;
    height: 8px;
    background: #999;
    border-radius: 50%;
    animation: bizchat-typing-bounce 1.4s ease-in-out infinite;
}

.bizchat-typing-dot:nth-child(1) { animation-delay: 0s; }
.bizchat-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.bizchat-typing-dot:nth-child(3) { animation-delay: 0.4s; }

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

/* ========================= 
   Input Area 
   ========================= */
.bizchat-input-area {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    padding: 6px 6px calc(8px + var(--safe-bottom)) 6px;
    border-top: 1px solid var(--bizchat-border);
    background: #fff;
}

.bizchat-input-wrapper {
    display: flex;
    align-items: center;
    width: 100%;
    margin-bottom: 5px;
}

.bizchat-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 16px;
    background: #f5f5f5;
    border: none;
    border-radius: 20px;
    outline: none;
    min-height: 44px;
    max-height: 90px;
    resize: none;
    margin-right: 8px;
    font-family: inherit;
    color: #222;
    margin-bottom: 0px;;
}

.bizchat-input:focus {
    background: #fff;
}

.bizchat-send-btn {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    font-size: 15px;
    background: var(--bizchat-primary);
    color: #fff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: 0px;;
}

.bizchat-send-btn:hover {
    background: var(--bizchat-primary-hover);
}

.bizchat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Icon row */
.bizchat-icon-row {
    display: flex;
    justify-content: flex-start;
    gap: 10px;
    padding-left: 2px;
    height: 29px;;
}

.bizchat-bar-btn {
    background: #e8eaed;
    border: none;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .2s ease, color .2s ease;
    padding-top: 0px;
}

.bizchat-bar-btn:hover {
    background: var(--bizchat-primary);
    color: #fff;
}

.bizchat-bar-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Recording state for voice button */
#bizchat-voice-btn.recording {
    background: var(--bizchat-error);
    animation: bizchat-mic-pulse 1.2s infinite;
    color: #fff;
}

@keyframes bizchat-mic-pulse {
    0% { box-shadow: 0 0 0 0 #fd8080aa; }
    70% { box-shadow: 0 0 0 8px #fd808000; }
    100% { box-shadow: 0 0 0 0 #fd8080aa; }
}

/* ========================= 
   Notification Effects 
   ========================= */
.bizchat-highlight {
    box-shadow: 0 0 20px 5px #ff9800;
    animation: bizchat-pop .5s;
}

@keyframes bizchat-pop {
    0% { transform: scale(.9); }
    60% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.bizchat-notify {
    animation: bizchat-shake .4s;
}

@keyframes bizchat-shake {
    0% { transform: translate(0); }
    20% { transform: translate(-3px); }
    40% { transform: translate(3px); }
    60% { transform: translate(-3px); }
    80% { transform: translate(3px); }
    100% { transform: translate(0); }
}

@keyframes bizchat-fade-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================= 
   Media Elements 
   ========================= */
.bizchat-photo-msg {
    max-width: 200px;
    border-radius: 8px;
    display: block;
}

.bizchat-audio-msg {
    max-width: 200px;
}

/* ========================= 
   Mobile Responsive 
   ========================= */
@media (max-width: 700px) {
    #bizchat-window,
    #bizchat-window.bizchat-maximized {
        position: fixed !important;
        inset: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        max-height: 100vh !important;
        border-radius: 0 !important;
        transform: translateY(calc(-1 * var(--bizchat-kb))) !important;
        overflow: hidden !important;
        display: flex !important;
        flex-direction: column !important;
    }
    
    #bizchat-window:not(.active) {
        display: none !important;
    }
    
    .bizchat-messages {
        flex: 1 1 auto !important;
        min-height: 0 !important;
        overflow-y: auto !important;
    }
    
    .bizchat-input-area {
        position: sticky !important;
        bottom: 0 !important;
        z-index: 10 !important;
    }
    
    .bizchat-message-bubble {
        font-size: 13.4px;
        padding: 10px 11px;
    }
    
    .bizchat-message-avatar {
        width: 26px;
        height: 26px;
        font-size: 14px;
    }
    
    .bizchat-input {
        font-size: 13.5px;
    }
}

@media (max-width: 500px) {
    #bizchat-float-btn {
        width: 54px;
        height: 54px;
        right: 12px;
        bottom: 12px;
    }
    
    #bizchat-float-btn img {
        width: 34px;
        height: 34px;
    }
}

/* ========================= 
   Quick Replies 
   ========================= */
.bizchat-quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bizchat-bg-secondary);
}

.bizchat-quick-btn {
    background: #fff;
    border: 1px solid var(--bizchat-border);
    border-radius: 16px;
    padding: 6px 14px;
    font-size: 13px;
    color: var(--bizchat-text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.bizchat-quick-btn:hover {
    background: var(--bizchat-primary);
    color: #fff;
    border-color: var(--bizchat-primary);
}

/* ========================= 
   Dark Mode Support 
   ========================= */
/* Disabled - always use light theme for chat widget
@media (prefers-color-scheme: dark) {
    :root {
        --bizchat-bg-primary: #1a1a1a;
        --bizchat-bg-secondary: #2d2d2d;
        --bizchat-bg-tertiary: #3d3d3d;
        --bizchat-text-primary: #ffffff;
        --bizchat-text-secondary: #a0a0a0;
        --bizchat-border: #404040;
    }
    
    #bizchat-window {
        background: var(--bizchat-bg-primary);
    }
    
    .bizchat-header {
        background: #1859ab;
    }
    
    .bizchat-message-bubble {
        background: var(--bizchat-bg-tertiary);
        color: var(--bizchat-text-primary);
    }
    
    .bizchat-message.bot .bizchat-message-bubble {
        background: #2a3f5f;
        color: #e0e0e0;
    }
    
    .bizchat-input {
        background: var(--bizchat-bg-tertiary);
        color: var(--bizchat-text-primary);
    }
    
    .bizchat-bar-btn {
        background: var(--bizchat-bg-tertiary);
        color: var(--bizchat-text-primary);
    }
}
*/