.user-chip-wrap {
    position: relative;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.user-chip-btn {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 5px 10px 5px 6px;
    background: var(--bg-elevated, rgba(255,255,255,0.06));
    border: 1px solid var(--border-default, rgba(255,255,255,0.10));
    border-radius: 99px;
    cursor: pointer;
    color: var(--text-primary);
    transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    white-space: nowrap;
    user-select: none;
}

    .user-chip-btn:hover {
        background: var(--bg-nav-hover, rgba(255,255,255,0.10));
        border-color: rgba(78, 141, 255, 0.35);
        box-shadow: 0 0 0 3px rgba(78, 141, 255, 0.10);
    }

    .user-chip-btn[aria-expanded="true"] {
        background: var(--bg-nav-hover, rgba(255,255,255,0.12));
        border-color: rgba(78, 141, 255, 0.50);
    }

.user-chip-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1d4ed8, #3b82f6);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    letter-spacing: 0;
    line-height: 1;
}

.user-chip-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    line-height: 1.1;
}

.user-chip-welcome {
    font-size: 0.65rem;
    color: var(--text-tertiary, #6b7280);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.user-chip-name {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-chip-chevron {
    width: 12px;
    height: 12px;
    stroke: var(--text-tertiary, #6b7280);
    fill: none;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.user-chip-btn[aria-expanded="true"] .user-chip-chevron {
    transform: rotate(180deg);
}

.user-chip-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 240px;
    background: var(--bg-elev-1, var(--bg-card, #282834));
    border: 1px solid var(--outline, var(--border-default, rgba(255,255,255,0.10)));
    border-radius: var(--radius-lg, 14px);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.4), 0 12px 32px -4px rgba(0,0,0,0.5);
    z-index: 10000;
    overflow: hidden;

    opacity: 0;
    transform: translateY(-6px) scale(0.98);
    transform-origin: top right;
    transition: opacity 0.18s ease, transform 0.18s cubic-bezier(0.34,1.2,0.64,1);
    pointer-events: none;
}

    .user-chip-menu.chip-menu--open {
        opacity: 1;
        transform: translateY(0) scale(1);
        pointer-events: auto;
    }

.chip-menu-head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.125rem 0.875rem;
    border-bottom: 1px solid var(--outline, rgba(255,255,255,0.08));
}

.chip-menu-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1d4ed8, #3b82f6);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    letter-spacing: 0;
    line-height: 1;
    box-shadow: 0 2px 8px rgba(0,0,0,0.35);
}

.chip-menu-head-info {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.chip-menu-display {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary, #efefef);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chip-menu-email {
    font-size: 0.75rem;
    color: var(--text-tertiary, #6b7280);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chip-menu-tier-row {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 1px;
}

.chip-menu-body {
    padding: 0.375rem 0;
}

.chip-menu-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.625rem 1.125rem;
    background: transparent;
    border: none;
    color: var(--text-primary, #efefef);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: background 0.12s ease, color 0.12s ease;
    line-height: 1.3;
}

    .chip-menu-item svg {
        width: 15px;
        height: 15px;
        stroke: var(--text-tertiary, #6b7280);
        fill: none;
        stroke-width: 2;
        flex-shrink: 0;
        transition: stroke 0.12s ease;
    }

    .chip-menu-item:hover {
        background: rgba(255, 255, 255, 0.06);
    }

        .chip-menu-item:hover svg {
            stroke: var(--text-primary, #efefef);
        }

.chip-menu-item--upgrade {
    color: #fbbf24;
    font-weight: 600;
}

    .chip-menu-item--upgrade svg {
        stroke: #fbbf24;
    }

    .chip-menu-item--upgrade:hover {
        background: rgba(251,191,36,0.08);
        color: #fcd34d;
    }

        .chip-menu-item--upgrade:hover svg {
            stroke: #fcd34d;
        }

.chip-menu-item--danger {
    color: var(--accent-red, #ff5b6e);
}

    .chip-menu-item--danger svg {
        stroke: var(--accent-red, #ff5b6e);
    }

    .chip-menu-item--danger:hover {
        background: rgba(255, 91, 110, 0.08);
    }

.chip-menu-divider {
    height: 1px;
    background: var(--outline, rgba(255,255,255,0.08));
    margin: 0.25rem 0;
}

.upgrade-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 99500;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.upgrade-modal-dialog {
    width: 100%;
    max-width: 420px;
    background: var(--bg-elev-1, var(--bg-card, #282834));
    border: 1px solid var(--outline, rgba(255,255,255,0.10));
    border-radius: var(--radius-lg, 14px);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.5), 0 20px 48px -8px rgba(0,0,0,0.6);
    overflow: hidden;
    animation: auth-card-in 0.22s cubic-bezier(0.34,1.3,0.64,1) both;
}

.upgrade-modal-icon-wrap {
    display: flex;
    justify-content: center;
    padding: 2rem 1.5rem 0.75rem;
}

.upgrade-modal-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md, 10px);
    background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(139,92,246,0.15));
    border: 1px solid rgba(251,191,36,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
}

    .upgrade-modal-icon svg {
        width: 24px;
        height: 24px;
        stroke: #fbbf24;
        fill: none;
        stroke-width: 2;
    }

.upgrade-modal-body {
    padding: 0 1.5rem 1.25rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
}

.upgrade-modal-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary, #efefef);
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin: 0;
}

.upgrade-modal-message {
    font-size: 0.875rem;
    color: var(--text-secondary, #9a9ab0);
    line-height: 1.6;
    margin: 0;
    max-width: 320px;
}

.upgrade-bullets-list {
    list-style: none;
    margin: 0.25rem 0 0;
    padding: 0;
    width: 100%;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.upgrade-bullet {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.84rem;
    color: var(--text-secondary, #9a9ab0);
    line-height: 1.45;
}

    .upgrade-bullet::before {
        content: '✓';
        color: #4e8dff;
        font-weight: 800;
        font-size: 0.8rem;
        flex-shrink: 0;
        margin-top: 1px;
    }

.upgrade-modal-foot {
    display: flex;
    gap: 0.6rem;
    padding: 0 1.5rem 1.5rem;
}

.upgrade-modal-cancel {
    flex: 1;
    height: 44px;
    background: transparent;
    border: 1px solid var(--outline, rgba(255,255,255,0.10));
    border-radius: var(--radius-md, 10px);
    color: var(--text-secondary, #9a9ab0);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}

    .upgrade-modal-cancel:hover {
        background: rgba(255,255,255,0.05);
    }

.upgrade-modal-cta {
    flex: 2;
    height: 44px;
    background: linear-gradient(135deg, #4e8dff, #7c3aed);
    border: none;
    border-radius: var(--radius-md, 10px);
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: filter 0.15s ease, transform 0.12s ease;
    box-shadow: 0 4px 16px rgba(78,141,255,0.3);
}

    .upgrade-modal-cta:hover {
        filter: brightness(1.12);
    }

    .upgrade-modal-cta:active {
        transform: translateY(1px);
    }

@media (max-width: 600px) {
    .user-chip-info,
    .user-chip-chevron {
        display: none;
    }

    .user-chip-btn {
        padding: 4px;
        border-radius: 50%;
    }

    .user-chip-avatar {
        width: 32px;
        height: 32px;
        font-size: 0.78rem;
    }

    .user-chip-menu {
        right: -4px;
        min-width: 220px;
    }
}

@media (max-width: 440px) {
    .upgrade-modal-overlay {
        align-items: flex-end;
        padding: 0;
    }

    .upgrade-modal-dialog {
        max-width: 100%;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        padding-bottom: env(safe-area-inset-bottom, 0);
    }
}

.auth-overlay {
    position: fixed !important;
    inset: 0;
    z-index: 10000 !important;
    background: rgba(0, 0, 0, 0.80) !important;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-secondary, #16161a);
    border: 1px solid var(--border-default, rgba(255,255,255,0.12));
    border-radius: 16px;
    box-shadow: 0 24px 64px rgba(0,0,0,0.7);
    overflow: hidden;
    animation: authSlideIn 0.35s cubic-bezier(0.34, 1.4, 0.64, 1);
}

@keyframes authSlideIn {
    from {
        opacity: 0;
        transform: scale(0.92) translateY(-30px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.auth-brand {
    padding: 2.5rem 2rem 1.75rem;
    text-align: center;
    background: var(--bg-primary, #111116);
    border-bottom: 1px solid var(--border-default, rgba(255,255,255,0.08));
}

.auth-brand-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #4e8dff 0%, #22e0b3 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    box-shadow: 0 8px 24px rgba(78, 141, 255, 0.3);
}

    .auth-brand-icon svg {
        width: 28px;
        height: 28px;
        color: #fff;
    }

    .auth-brand-icon .auth-brand-logo {
        width: 100%;
        height: 100%;
        object-fit: contain;
        padding: 8px;
        border-radius: 14px;
    }

.auth-brand-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary, #f0f0f6);
    margin: 0 0 0.5rem;
    letter-spacing: -0.02em;
}

.auth-brand-sub {
    font-size: 0.9rem;
    color: var(--text-secondary, #9898a8);
    margin: 0;
}

.auth-tabs-strip {
    display: flex;
    gap: 0;
    background: var(--bg-primary, #111116);
    padding: 0;
    border-bottom: 1px solid var(--border-default, rgba(255,255,255,0.08));
}

.auth-tab-btn {
    flex: 1;
    padding: 1rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary, #9898a8);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

    .auth-tab-btn:hover {
        color: var(--text-primary, #f0f0f6);
        background: rgba(255,255,255,0.03);
    }

    .auth-tab-btn.active {
        color: var(--text-primary, #f0f0f6);
        border-bottom-color: var(--accent-blue, #4e8dff);
        background: var(--bg-secondary, #16161a);
    }

.auth-form-body {
    padding: 2rem;
    background: var(--bg-secondary, #16161a);
}

.auth-input {
    width: 100%;
    padding: 0.95rem 1.15rem;
    background: var(--bg-primary, #111116);
    border: 1px solid var(--border-default, rgba(255,255,255,0.12));
    border-radius: 10px;
    color: var(--text-primary, #f0f0f6);
    font-size: 0.95rem;
    transition: all 0.2s ease;
    margin-bottom: 1rem;
}

    .auth-input:focus {
        outline: none;
        border-color: var(--accent-blue, #4e8dff);
        box-shadow: 0 0 0 4px rgba(78, 141, 255, 0.15);
        background: var(--bg-secondary, #16161a);
    }

    .auth-input::placeholder {
        color: var(--text-tertiary, #66667a);
    }

.auth-error-box,
.auth-info-box {
    padding: 1rem 1.15rem;
    border-radius: 10px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.auth-error-box {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fca5a5;
}

.auth-info-box {
    background: rgba(78, 141, 255, 0.12);
    border: 1px solid rgba(78, 141, 255, 0.35);
    color: #93c5fd;
}

.auth-action-btn {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #4e8dff 0%, #22e0b3 100%);
    border: none;
    border-radius: 10px;
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 16px rgba(78, 141, 255, 0.3);
}

    .auth-action-btn:hover {
        filter: brightness(1.12);
        transform: translateY(-1px);
        box-shadow: 0 6px 20px rgba(78, 141, 255, 0.4);
    }

    .auth-action-btn:active {
        transform: translateY(0);
    }

    .auth-action-btn:disabled {
        opacity: 0.6;
        cursor: not-allowed;
        filter: none;
        transform: none;
    }

.auth-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: authSpin 0.6s linear infinite;
}

.auth-spinner-sm {
    width: 14px;
    height: 14px;
}

@keyframes authSpin {
    to {
        transform: rotate(360deg);
    }
}

.auth-link-btn {
    background: none;
    border: none;
    color: var(--accent-blue, #4e8dff);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem 0;
    transition: color 0.2s ease;
    display: block;
    width: 100%;
    text-align: center;
}

    .auth-link-btn:hover {
        color: #22e0b3;
    }

.auth-guest-section {
    padding: 1.5rem 2rem 2rem;
    background: var(--bg-primary, #111116);
    border-top: 1px solid var(--border-default, rgba(255,255,255,0.08));
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

    .auth-divider::before,
    .auth-divider::after {
        content: '';
        flex: 1;
        height: 1px;
        background: var(--border-default, rgba(255,255,255,0.12));
    }

    .auth-divider span {
        font-size: 0.75rem;
        color: var(--text-tertiary, #66667a);
        text-transform: uppercase;
        letter-spacing: 0.08em;
        font-weight: 600;
    }

.auth-guest-btn {
    width: 100%;
    padding: 0.95rem 1.5rem;
    background: transparent;
    border: 1px solid var(--border-default, rgba(255,255,255,0.16));
    border-radius: 10px;
    color: var(--text-primary, #f0f0f6);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.875rem;
}

    .auth-guest-btn:hover {
        background: rgba(255,255,255,0.05);
        border-color: rgba(255,255,255,0.28);
    }

.auth-guest-note {
    font-size: 0.8rem;
    color: var(--text-tertiary, #66667a);
    text-align: center;
    margin: 0;
    line-height: 1.5;
}

@media (max-width: 500px) {
    .auth-overlay {
        padding: 0;
        align-items: flex-end;
    }

    .auth-card {
        max-width: 100%;
        border-radius: 16px 16px 0 0;
        animation: authSlideInMobile 0.35s cubic-bezier(0.34, 1.4, 0.64, 1);
    }

    @keyframes authSlideInMobile {
        from {
            transform: translateY(100%);
        }

        to {
            transform: translateY(0);
        }
    }

    .auth-brand,
    .auth-form-body,
    .auth-guest-section {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

.auth-tab-btn:focus-visible,
.auth-action-btn:focus-visible,
.auth-guest-btn:focus-visible,
.auth-link-btn:focus-visible {
    outline: 2px solid var(--accent-blue, #4e8dff);
    outline-offset: 2px;
}

.auth-cancel-btn {
    width: 100%;
    padding: 0.6rem 1rem;
    margin-top: 0.25rem;
    background: none;
    border: none;
    color: var(--text-tertiary, #66667a);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: color 0.2s ease, background 0.2s ease;
}

    .auth-cancel-btn:hover {
        color: var(--text-primary, #f0f0f6);
        background: rgba(255, 255, 255, 0.05);
    }

.auth-support-note {
    margin: 0.875rem 0 0;
    font-size: 0.8rem;
    color: var(--text-tertiary, #66667a);
    text-align: center;
    line-height: 1.5;
}

    .auth-support-note a {
        color: var(--accent-blue, #4e8dff);
        font-weight: 600;
        text-decoration: none;
        transition: color 0.2s ease;
    }

        .auth-support-note a:hover {
            color: #22e0b3;
            text-decoration: underline;
        }