/* Vivanto core + approved optional secondary palette. Core identity is preserved. */
:root{
 --color-brand-ink:#1B292B;--color-brand-teal:#0F766E;--color-brand-deep:#0A4F4A;--color-brand-paper:#F7F9F9;
 --color-mint:#45CBB4;--color-mint-soft:#E4EFEC;--color-mint-dark:#0A4F4A;
 --color-blue:#6EA8FF;--color-blue-soft:#E8F0FF;--color-blue-dark:#234DA4;
 --color-coral:#F47F72;--color-coral-soft:#FFF0ED;--color-coral-dark:#9B372E;
 --color-yellow:#F6C453;--color-yellow-soft:#FFF7DE;--color-yellow-dark:#745000;
 --color-pink:#EEA9CE;--color-pink-soft:#FCEBF4;--color-pink-dark:#913B68;
 --color-purple:#A08AE7;--color-purple-soft:#F1ECFF;--color-purple-dark:#5D42A2;
 --color-primary:var(--color-brand-teal);--color-primary-hover:var(--color-brand-deep);--color-text-primary:var(--color-brand-ink);
 --scene-accent:var(--color-mint);--scene-soft:var(--color-mint-soft);--scene-dark:var(--color-mint-dark);
 --button-bg:var(--color-primary);--button-fg:var(--color-brand-paper);--card-accent:var(--scene-accent);--card-soft:var(--scene-soft);
}
[data-tone="blue"]{--scene-accent:var(--color-blue);--scene-soft:var(--color-blue-soft);--scene-dark:var(--color-blue-dark)}
[data-tone="coral"]{--scene-accent:var(--color-coral);--scene-soft:var(--color-coral-soft);--scene-dark:var(--color-coral-dark)}
[data-tone="yellow"]{--scene-accent:var(--color-yellow);--scene-soft:var(--color-yellow-soft);--scene-dark:var(--color-yellow-dark)}
[data-tone="pink"]{--scene-accent:var(--color-pink);--scene-soft:var(--color-pink-soft);--scene-dark:var(--color-pink-dark)}
[data-tone="purple"]{--scene-accent:var(--color-purple);--scene-soft:var(--color-purple-soft);--scene-dark:var(--color-purple-dark)}
.deck[data-color-mode="base"]{--scene-accent:var(--color-brand-teal);--scene-soft:var(--color-mint-soft);--scene-dark:var(--color-brand-deep)}