.chat-main {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    position: absolute;
    top: 0;
    left: 0;
    z-index: 20;
    transform: translateX(100%);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: visible;
}

.chat-main.active {
    transform: translateX(0);
}

.chat-header-main {
    padding: calc(10px + var(--safe-top)) 10px 10px;
    display: flex;
    align-items: center;
    gap: 4px;
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    min-height: 56px;
    position: relative;
    z-index: 5;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.chat-header-main::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59,130,246,0.15), transparent);
}

.back-btn {
    margin-right: 2px;
}

.chat-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    max-width: 60%;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    transition: background 0.12s ease;
}

.chat-user-info:hover {
    background: var(--bg-hover);
}

.chat-avatar-main {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    flex-shrink: 0;
}

.chat-user-details {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.chat-user-name {
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-user-status {
    font-size: 12px;
    color: var(--text-muted);
}

.chat-actions {
    display: flex;
    gap: 2px;
}

.reply-preview {
    display: none;
    align-items: center;
    padding: 8px 14px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    gap: 10px;
    position: relative;
}

.reply-preview::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.reply-preview.active {
    display: flex;
}

.reply-content {
    flex: 1;
    min-width: 0;
}

.reply-label {
    font-size: 10px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.reply-text {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 1px;
}

.reply-cancel {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    display: flex;
    transition: all 0.12s ease;
}

.reply-cancel:hover {
    background: var(--bg-hover);
    color: var(--text-secondary);
}

.reply-cancel svg {
    width: 16px;
    height: 16px;
}