:root[data-theme="sapphire-day"] {
    --bg: #EDF0F7;
    --card: #FFFFFF;
    --hover: #E3E9F5;
    --primary: #0F52BA;
    --primary-hover: #2D6FD1;
    --primary-text: #FFFFFF;
    --text: #1B2333;
    --text-secondary: #57607A;
    --text-muted: #8B93AA;
    --success: #2E9E6B;
    --error: #C6414B;
    --warning: #C6952B;
    --border: rgba(27, 35, 51, .10);
    --overlay-bg: #0A1628;
}

[data-theme="sapphire-day"] .setting-warning {
    background: rgba(198, 149, 43, .12);
}

[data-theme="sapphire-day"] .approve-banner {
    background: rgba(46, 158, 107, .12);
}

[data-theme="sapphire-day"] .approve-banner.approve-banner-stale {
    background: rgba(198, 149, 43, .12);
}

[data-theme="sapphire-day"] .thumb {
    background: #E6EBF5;
    border-color: rgba(27, 35, 51, .18);
}

[data-theme="sapphire-day"] .btn-fs,
[data-theme="sapphire-day"] .fs-top-right,
[data-theme="sapphire-day"] .fs-bottom-left,
[data-theme="sapphire-day"] .fs-bottom-right {
    background: rgba(255, 255, 255, .85);
    border-color: rgba(27, 35, 51, .14);
}

[data-theme="sapphire-day"] .btn-fs:hover {
    background: rgba(255, 255, 255, .97);
}

[data-theme="sapphire-day"] .fs-attention-pulse {
    box-shadow: inset 0 0 60px rgba(15, 82, 186, .5);
}