.instagram-messages-wrapper {
    width: 100%;
    height: calc(100vh - 70px);
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    display: flex;
    overflow: hidden;
    transition: none;
}

.instagram-messages-sidebar {
    width: 100%;
    max-width: 400px;
    background: var(--surface-card);
    border-right: 2px solid var(--border-default);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: none;
}

.instagram-messages-header {
    padding: 16px 20px;
    border-bottom: 2px solid var(--border-default);
    background: var(--surface-elevated);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.instagram-messages-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.instagram-messages-user-handle {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.instagram-messages-new-btn {
    display: none;
}

.instagram-messages-search {
    padding: 8px 16px;
    border-bottom: 2px solid var(--border-default);
    background: var(--surface-elevated);
    flex-shrink: 0;
}

.instagram-messages-search-input {
    width: 100%;
    background: var(--surface-card);
    border: 2px solid var(--border-default);
    border-radius: 8px;
    padding: 8px 12px 8px 36px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    position: relative;
    transition: border-color 0.2s ease;
}

.instagram-messages-search-input:focus {
    border-color: var(--accent-primary);
    background: var(--bg-primary);
}

.instagram-messages-search-icon {
    position: absolute;
    left: 28px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.instagram-conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.instagram-conversation-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid rgba(var(--border-default-rgb, 58, 58, 58), 0.5);
    text-decoration: none;
    color: var(--text-primary);
    touch-action: manipulation;
    min-height: 72px;
    background: transparent;
    transition: background-color 0.2s ease;
}

.instagram-conversation-item:active {
    background: rgba(var(--surface-elevated-rgb, 37, 37, 37), 0.4);
}

.instagram-conversation-item.active {
    background: rgba(var(--accent-primary-rgb, 143, 171, 143), 0.12);
    border-left: 3px solid var(--accent-primary);
}

.instagram-conversation-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

.instagram-conversation-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.instagram-conversation-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.instagram-conversation-preview {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.instagram-conversation-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    flex-shrink: 0;
}

.instagram-conversation-time {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.instagram-unread-badge {
    background: var(--accent-primary);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

.instagram-chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--surface-card);
    overflow: hidden;
    transition: none;
}

.instagram-chat-header {
    padding: 12px 20px;
    border-bottom: 2px solid var(--border-default);
    background: var(--surface-elevated);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.instagram-chat-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.instagram-chat-header-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: white;
    overflow: hidden;
}

.instagram-chat-header-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instagram-chat-header-info {
    display: flex;
    flex-direction: column;
}

.instagram-chat-header-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.instagram-chat-header-handle {
    font-size: 12px;
    color: var(--text-muted);
}

.instagram-chat-header-actions {
    display: none;
}

.instagram-chat-header-btn {
    display: none;
}

.instagram-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: transparent;
}

.instagram-message {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    max-width: 70%;
}

.instagram-message.own {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.instagram-message-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 10px;
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

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

.instagram-message-bubble {
    background: var(--surface-elevated);
    border: 2px solid var(--border-default);
    border-radius: 18px;
    padding: 8px 12px;
    font-size: 14px;
    line-height: 1.4;
    color: var(--text-primary);
    word-wrap: break-word;
    white-space: pre-wrap;
    word-break: break-word;
}

.instagram-message.own .instagram-message-bubble {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

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

.instagram-message.own .instagram-message-time {
    text-align: right;
}

.instagram-chat-input-container {
    padding: 12px 16px;
    border-top: 2px solid var(--border-default);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    background: var(--surface-card);
}

.instagram-chat-quick-buttons {
    display: none;
}

.instagram-chat-quick-btn {
    display: none;
}

.instagram-chat-input-wrapper {
    flex: 1;
    position: relative;
}

.instagram-chat-input {
    width: 100%;
    background: var(--surface-elevated);
    border: 2px solid var(--border-default);
    border-radius: 22px;
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    resize: none;
    overflow-y: auto;
    min-height: 44px;
    max-height: 200px;
    line-height: 1.5;
    transition: border-color 0.2s ease, background 0.2s ease;
    box-sizing: border-box;
}

.instagram-chat-input:focus {
    border-color: var(--accent-primary);
    background: var(--bg-primary);
}

.instagram-chat-input::placeholder {
    color: var(--text-muted);
}

.instagram-chat-send-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    touch-action: manipulation;
    flex-shrink: 0;
}

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

.instagram-empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    text-align: center;
}

.instagram-empty-state-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.instagram-empty-state-text {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.instagram-empty-state-hint {
    font-size: 14px;
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .instagram-messages-wrapper {
        flex-direction: column;
        height: calc(100vh - 70px);
    }
    
    .instagram-messages-sidebar {
        width: 100%;
        max-width: 100%;
        display: flex;
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 10;
    }
    
    .instagram-messages-sidebar.mobile-hidden {
        display: none;
    }
    
    .instagram-chat-main {
        width: 100%;
        display: none;
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 10;
        transition: none;
    }
    
    .instagram-chat-main.mobile-visible {
        display: flex;
    }
    
    .instagram-messages-sidebar {
        transition: none;
    }
    
    .instagram-messages-back-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border: none;
        background: transparent;
        color: var(--text-primary);
        cursor: pointer;
        font-size: 20px;
        touch-action: manipulation;
        margin-right: 8px;
    }
}

@media (min-width: 901px) {
    .instagram-messages-back-btn {
        display: none;
    }
    
    .instagram-chat-main {
        display: none;
    }
    
    .instagram-chat-main[style*="display: flex"] {
        display: flex !important;
    }
}