.sidebar {
    width: 280px;
    background-color: rgb(10 124 255 / 5%);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    padding: 20px 0;
    height: 100vh;
    border-right: 1px solid rgba(13,13,13,0.06);
    position: relative;
    z-index: 100;
}

.sidebar.collapsed {
    width: 80px;
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1050;
        background: white;
        box-shadow: 2px 0 20px rgba(0,0,0,0.1);
    }
    .sidebar.show {
        transform: translateX(0);
    }
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    margin-bottom: 24px;
}

.sidebar.collapsed .sidebar-header {
    padding: 0 12px;
    justify-content: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar.collapsed .logo-area {
    gap: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0a7cff;
    font-size: 20px;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.sidebar.collapsed .logo-icon {
    display: none;
}

.logo-text {
    font-weight: 600;
    font-size: 20px;
    color: #0d0d0d;
    white-space: nowrap;
}

.sidebar.collapsed .logo-text {
    display: none;
}

.collapse-btn {
    background: none;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(13,13,13,0.58);
    cursor: pointer;
    flex-shrink: 0;
}

.collapse-btn:hover {
    background: rgba(13,13,13,0.03);
}

@media (max-width: 768px) {
    .collapse-btn {
        display: none;
    }
}

.nav-grid {
    display: flex;
    flex-direction: column;
    padding: 0 12px;
    gap: 2px;
    margin-bottom: 24px;
}

.menu-row {
    display: grid;
    grid-template-columns: 24px 1fr;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    min-height: 44px;
    color: rgba(13,13,13,0.58);
    transition: background 0.15s;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.menu-icon {
    font-size: 20px;
    width: 24px;
    text-align: center;
    color: rgba(13,13,13,0.58);
    display: block;
}

.menu-text {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    line-height: 1.4;
}

.menu-row.active {
    background: rgba(13,13,13,0.03);
    color: #0d0d0d;
}

.menu-row.active .menu-icon {
    color: #0a7cff;
}

.menu-row:hover:not(.active) {
    background: rgba(13,13,13,0.03);
}

.sidebar.collapsed .menu-text {
    display: none;
}

.sidebar.collapsed .menu-row {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 10px 0;
}

.tooltip {
    position: absolute;
    background: #202020;
    color: white;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.1);
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.sidebar:not(.collapsed) .tooltip {
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
}

.sidebar.collapsed .tooltip {
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
}

.sidebar.collapsed .menu-row:hover .tooltip,
.sidebar.collapsed .chat-row:hover .tooltip,
.sidebar.collapsed .user-row:hover .tooltip {
    opacity: 1;
    visibility: visible;
}

.chats-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 12px;
}

.section-label {
    font-size: 11px;
    color: rgba(13,13,13,0.4);
    padding: 12px 12px 6px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.sidebar.collapsed .section-label {
    display: none;
}

.chat-row {
    display: grid;
    grid-template-columns: 24px 1fr 24px;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    min-height: 44px;
    color: rgba(13,13,13,0.58);
    transition: background 0.15s;
}

.chat-row .menu-icon {
    font-size: 20px;
    width: 24px;
    text-align: center;
}

.chat-row .fa-comment { color: #e53e3e; }
.chat-row .fa-image { color: #ff8a00; }
.chat-row .fa-video { color: #0a7cff; }
.chat-row .fa-graduation-cap { color: #8a4fe5; }
.chat-row .fa-dice { color: #e53e99; }

.chat-info {
    overflow: hidden;
}

.sidebar.collapsed .chat-info {
    display: none;
}

.chat-name {
    font-size: 14px;
    font-weight: 500;
    color: #0d0d0d;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-preview {
    font-size: 12px;
    color: rgba(13,13,13,0.4);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-row:hover {
    background: rgba(13,13,13,0.03);
}

.sidebar.collapsed .chat-row {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 10px 0;
}

.delete-chat {
    background: none;
    border: none;
    color: rgba(13,13,13,0.58);
    font-size: 16px;
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s, color 0.2s;
    width: 24px;
    height: 24px;
}
.chat-row:hover .delete-chat {
    opacity: 1;
}
.delete-chat:hover {
    background: rgba(13,13,13,0.03);
    color: #e53e3e;
}
.sidebar.collapsed .delete-chat {
    display: none;
}
@media (max-width: 768px) {
    .delete-chat {
        opacity: 1 !important;
    }
}

.user-footer {
    margin-top: auto;
    padding: 0 12px;
    position: relative;
}

.user-row {
    display: grid;
    grid-template-columns: 24px 1fr;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    min-height: 44px;
    transition: background 0.15s;
}

.user-row:hover {
    background: rgba(13,13,13,0.03);
}

.avatar {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(13,13,13,0.58);
    font-size: 16px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.user-info {
    overflow: hidden;
}

.sidebar.collapsed .user-info {
    display: none;
}

.user-name {
    font-size: 14px;
    font-weight: 600;
    color: #0d0d0d;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-badge {
    font-size: 11px;
    color: rgba(13,13,13,0.4);
    display: flex;
    align-items: center;
    gap: 3px;
}

.user-badge i {
    color: #ffb347;
    font-size: 8px;
}

.sidebar.collapsed .user-row {
    grid-template-columns: 1fr;
    justify-items: center;
    padding: 10px 0;
}

.user-menu {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 8px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    padding: 6px;
    min-width: 200px;
    border: 1px solid rgba(13,13,13,0.12);
    display: none;
    z-index: 1060;
}

.user-menu.show {
    display: block;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    color: #0d0d0d;
    font-size: 14px;
    cursor: pointer;
}

.menu-item i {
    width: 20px;
    color: rgba(13,13,13,0.58);
}

.menu-item:hover {
    background: rgba(13,13,13,0.03);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.4);
    z-index: 1040;
    opacity: 0;
    transition: opacity 0.3s;
}
.sidebar-overlay.show {
    display: block;
    opacity: 1;
}
@media (max-width: 768px) {
    .sidebar-overlay.show {
        display: block;
    }
}
.user-menu .menu-item {
    text-decoration: none;
    color: #0d0d0d;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
}

.user-menu .menu-item i {
    width: 20px;
    color: rgba(13,13,13,0.58);
}

.user-menu .menu-item:hover {
    background: rgba(13,13,13,0.03);
}

.chat-avatar {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
}
.sidebar.collapsed .chat-avatar {
    width: 24px;
    height: 24px;
}

.chat-row.active {
    background: rgba(13, 13, 13, 0.03);
}

.chat-row {
    margin-bottom: 4px;  /* creates a gap between chat rows */
    /* existing styles */
}

.chats-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 0 12px;
    overflow-y: auto;
    overflow-x: hidden; /* ← добавляем, чтобы скрыть горизонтальный скролл */
    scrollbar-width: thin;
}


/* Стилизация скролла для .chats-section */
.chats-section::-webkit-scrollbar {
    width: 6px;
}
.chats-section::-webkit-scrollbar-track {
    background: rgba(13, 13, 13, 0.05);
    border-radius: 3px;
}
.chats-section::-webkit-scrollbar-thumb {
    background: #0a7cff;
    border-radius: 3px;
}
.chats-section::-webkit-scrollbar-thumb:hover {
    background: #248aff;
}
/* Firefox */
.chats-section {
    scrollbar-width: thin;
    scrollbar-color: #0a7cff rgba(13, 13, 13, 0.05);
}

.login-btn-sidebar {
    width: 100%;
    background: var(--btn-primary);
    border: none;
    border-radius: 40px;
    padding: 12px 16px;
    font-weight: 500;
    font-size: 14px;
    color: white;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 16px;
}
.login-btn-sidebar:hover {
    background: #248aff;
}

/* sidebar.css — добавьте стили */
.logo-link {
    text-decoration: none;
    display: block;
    color: inherit;
}
.logo-link:hover .logo-text {
    color: var(--icon-accent);
}
/* sidebar.css — добавьте/замените стили */
.login-btn-sidebar {
    width: 100%;
    background: var(--btn-primary);
    border: none;
    border-radius: 40px;
    padding: 12px 16px;
    font-weight: 500;
    font-size: 14px;
    color: white;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-btn-sidebar i {
    font-size: 16px;
}

.sidebar.collapsed .login-text {
    display: none;
}

.sidebar.collapsed .login-btn-sidebar {
    padding: 12px;
    width: auto;
}

.login-btn-sidebar:hover {
    background: #248aff;
}