body.has-side-header {
    padding-left: 60px;
}

.header-bar {
    position: fixed;
    left: 0;
    top: 0;
    width: 60px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.96);
    border-right: 1px solid #eaeaea;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.header-inner {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 16px 6px 18px;
    box-sizing: border-box;
}

.header-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    width: 100%;
}

.header-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
}

.header-logo img {
    width: 34px;
    height: 34px;
    display: block;
}

.header-nav {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.header-nav .nav-item,
.header-settings-btn,
.header-quota-btn {
    color: transparent;
    text-decoration: none;
}

.sidebar-icon-btn,
.avatar-btn {
    position: relative;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 10px;
    padding: 0;
    margin: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    background-image: var(--nav-icon);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 20px 20px;
    box-shadow: none;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
    box-sizing: border-box;
}

.sidebar-icon-btn:hover,
.avatar-btn:hover {
    transform: translateX(2px);
    opacity: 0.82;
}

.header-nav .nav-item.active,
.sidebar-icon-btn.active {
    opacity: 1;
}

.avatar-btn {
    background-image: none;
}

.avatar-btn img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: block;
}

.header-right {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.header-more-btn {
    color: transparent;
    text-decoration: none;
}

.header-side-link {
    color: transparent;
    text-decoration: none;
}

.sidebar-quota-menu {
    position: absolute;
    left: calc(100% + 22px);
    top: 0;
    width: 232px;
    background: #ffffff;
    border: 1px solid #ececec;
    border-radius: 14px;
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
    padding: 10px;
    box-sizing: border-box;
    display: none;
    z-index: 120;
}

.sidebar-quota-menu.open {
    display: block;
}

.sidebar-quota-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 10px;
}

.sidebar-quota-tab {
    border: none;
    background: rgba(23, 162, 184, 0.08);
    color: #5b6b76;
    font-size: 13px;
    line-height: 1;
    padding: 9px 8px;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.18s ease, color 0.18s ease;
}

.sidebar-quota-tab.is-active {
    background: rgba(23, 162, 184, 0.18);
    color: #17a2b8;
}

.sidebar-quota-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px 0 14px;
}

.sidebar-quota-loading[hidden] {
    display: none !important;
}

.sidebar-quota-menu.is-loading .sidebar-quota-tabs,
.sidebar-quota-menu.is-loading .sidebar-quota-status,
.sidebar-quota-menu.is-loading .sidebar-quota-body,
.sidebar-quota-menu.is-loading .sidebar-quota-buy {
    display: none;
}

.sidebar-quota-menu.is-message-only .sidebar-quota-tabs,
.sidebar-quota-menu.is-message-only .sidebar-quota-body,
.sidebar-quota-menu.is-message-only .sidebar-quota-buy {
    display: none;
}

.sidebar-quota-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid #d1d5db;
    border-top-color: #111827;
    border-radius: 50%;
    animation: quota-spin 0.7s linear infinite;
}

.sidebar-quota-status {
    margin-bottom: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    background: #f8fafc;
    color: #64748b;
    font-size: 12px;
    line-height: 1.5;
}

.sidebar-quota-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-quota-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 11px 12px;
    border-radius: 12px;
    background: #f8fafc;
}

.sidebar-quota-row[hidden] {
    display: none !important;
}

.sidebar-quota-label {
    color: #475569;
    font-size: 13px;
    line-height: 1.4;
}

.sidebar-quota-value {
    color: #0f172a;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
}

.sidebar-quota-buy {
    display: block;
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: 14px;
    background: linear-gradient(135deg, #17a2b8 0%, #1290a3 100%);
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    box-shadow: 0 10px 22px rgba(23, 162, 184, 0.22);
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.sidebar-quota-buy[hidden] {
    display: none !important;
}

.sidebar-quota-buy:hover {
    opacity: 1;
    transform: translateY(-1px);
    box-shadow: 0 14px 26px rgba(23, 162, 184, 0.28);
}

@keyframes quota-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.header-settings-btn.is-disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.sidebar-icon-btn[data-tooltip]::after,
.avatar-btn[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    padding: 8px 12px;
    border-radius: 10px;
    background: rgba(17, 24, 39, 0.92);
    color: #ffffff;
    font-size: 13px;
    line-height: 1;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
    z-index: 1002;
}

.sidebar-icon-btn[data-tooltip]:hover,
.avatar-btn[data-tooltip]:hover {
    z-index: 1001;
}

.sidebar-icon-btn[data-tooltip]:hover::after,
.avatar-btn[data-tooltip]:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(2px);
}

.avatar-dropdown {
    position: absolute;
    left: calc(100% + 14px);
    bottom: 0;
    right: auto;
    top: auto;
    background: #fff;
    border: 1px solid #eee;
    box-shadow: 0 10px 28px rgba(0,0,0,0.12);
    border-radius: 12px;
    width: 200px;
    padding: 8px;
    display: none;
}

.avatar-dropdown.open {
    display: block;
}

.dropdown-item {
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    padding: 9px 10px;
    border-radius: 8px;
    color: #222;
    font-size: 14px;
    cursor: pointer;
}

.dropdown-item:hover {
    background: #f5f5f5;
}

.dropdown-item:disabled {
    color: #aaa;
    cursor: not-allowed;
    background: transparent;
}

.dropdown-item[hidden] {
    display: none;
}

.sidebar-more-menu {
    position: absolute;
    left: calc(100% + 22px);
    bottom: 0;
    width: 220px;
    background: #ffffff;
    border: 1px solid #ececec;
    border-radius: 14px;
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
    padding: 8px;
    box-sizing: border-box;
    display: none;
    z-index: 120;
}

.sidebar-more-menu.open {
    display: block;
}

.sidebar-more-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-more-item,
.sidebar-more-subitem {
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    color: #111827;
    text-decoration: none;
    font-size: 14px;
    line-height: 1.4;
    border-radius: 10px;
    box-sizing: border-box;
}

.sidebar-more-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    cursor: pointer;
}

.sidebar-more-link {
    justify-content: flex-start;
}

.sidebar-more-item:hover,
.sidebar-more-subitem:hover {
    background: #f5f7fb;
}

.sidebar-more-arrow {
    width: 8px;
    height: 8px;
    border-top: 1.5px solid #6b7280;
    border-right: 1.5px solid #6b7280;
    transform: rotate(45deg);
    flex: 0 0 8px;
    transition: opacity 0.2s ease;
}

.sidebar-more-subitem {
    display: block;
    padding: 10px 12px;
    cursor: pointer;
}

.sidebar-more-item.is-open {
    background: #f5f7fb;
}

.sidebar-more-submenu {
    position: absolute;
    left: calc(100% + 8px);
    top: 0;
    width: 180px;
    background: #ffffff;
    border: 1px solid #ececec;
    border-radius: 14px;
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
    padding: 8px;
    box-sizing: border-box;
    display: none;
    z-index: 121;
}

.sidebar-more-submenu::before {
    content: "";
    position: absolute;
    left: -14px;
    top: 0;
    width: 14px;
    height: 100%;
}

.sidebar-more-submenu.open {
    display: block;
}

.sidebar-more-subpanel {
    display: flex;
    flex-direction: column;
}

.sidebar-more-subpanel[hidden] {
    display: none;
}

.sidebar-more-submenu .sidebar-more-subitem + .sidebar-more-subitem {
    margin-top: 2px;
}

.sidebar-more-footer {
    margin-top: 8px;
    padding: 10px 12px 4px;
    font-size: 11px;
    line-height: 1.5;
    color: #94a3b8;
}

@media (max-width: 768px) {
    body.has-side-header {
        padding-left: 52px;
    }

    .header-bar {
        width: 52px;
    }

    .header-inner {
        padding: 14px 5px 16px;
    }

    .sidebar-icon-btn,
    .avatar-btn {
        width: 32px;
        height: 32px;
        border-radius: 8px;
        background-size: 18px 18px;
    }

    .avatar-btn img {
        width: 24px;
        height: 24px;
    }

    .sidebar-more-menu {
        width: 200px;
    }

    .sidebar-quota-menu {
        width: 204px;
    }

    .sidebar-more-submenu {
        width: 168px;
    }
}