/* 3c6a_section3.css - Threads Style Chat */

/* Container căn giữa */
#section3 .chat-container-full {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 10;
}

/* Chat Box Frame */
#section3 .col-chat.full-width {
    width: 100%;
    height: 85vh;
    display: flex;
    flex-direction: column;
    
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    overflow: hidden;
}

/* Header */
.chat-header {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: #fff;
    text-align: center;
    letter-spacing: 0.5px;
}

/* Khu vực Feed Tin nhắn */
.chat-messages-area {
    flex-grow: 1;
    overflow-y: auto;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    scrollbar-width: thin;
    scrollbar-color: #333 transparent;
}

.chat-messages-area::-webkit-scrollbar {
    width: 4px;
}
.chat-messages-area::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 2px;
}

/* Message Row */
.chat-msg-row.thread-style {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    animation: fadeIn 0.3s ease;
}

.chat-msg-row.thread-style:last-child {
    border-bottom: none;
}

/* Avatar Placeholder */
.msg-avatar-placeholder {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #333, #555);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-family: 'Fredoka', sans-serif;
    flex-shrink: 0;
    font-size: 0.9rem;
}

/* Content Wrapper */
.msg-content-wrapper {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Header: Name + Time */
.msg-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.msg-name {
    font-weight: 600;
    color: #00ffcc; /* Neon cyan nổi bật */
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
}

.msg-time {
    font-size: 0.75rem;
    color: #888;
}

/* Message Body */
.msg-bubble {
    color: #ffffff; /* Màu chữ trắng sáng nổi bật */
    font-size: 0.95rem;
    line-height: 1.5;
    white-space: pre-wrap;
    text-shadow: 0 0 1px rgba(0,0,0,0.5); /* Shadow nhẹ giúp chữ rõ hơn */
}

/* Input Area - Cleaner Look */
.chat-input-box {
    padding: 15px 20px;
    background: rgba(10, 10, 15, 0.95);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Input Fields */
.chat-input-box input {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 12px 16px;
    border-radius: 20px;
    outline: none;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.chat-input-box input:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(0, 255, 204, 0.5);
    box-shadow: 0 0 10px rgba(0, 255, 204, 0.1);
}

#chat-name-input {
    width: 120px; /* Vừa phải */
    text-align: center;
    font-weight: 600;
    color: #00ffcc;
}

#chat-msg-input {
    flex-grow: 1;
}

#chat-send-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: #00ffcc;
    color: #000;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    box-shadow: 0 0 15px rgba(0, 255, 204, 0.3);
}

#chat-send-btn:hover {
    transform: scale(1.1);
    background: #fff;
}

#chat-send-btn:active {
    transform: scale(0.95);
}

@media (max-width: 600px) {
    .chat-messages-area {
        padding-bottom: 20px;
    }
    
    .chat-input-box {
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 15, 0.98);
        z-index: 20;
        flex-wrap: nowrap;
        padding: 10px;
    }
    
    #chat-name-input {
        width: 80px;
        padding: 10px 5px;
        font-size: 0.85rem;
    }

    #chat-msg-input {
        padding: 10px 12px;
        font-size: 0.9rem;
    }

    #chat-send-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}