@media (prefers-color-scheme:dark){:root{--brand-bg:#1A1210;--brand-surface:#241C18;--brand-secondary:#2E2420;--brand-secondary-light:#3A2E28;--brand-border:#3D3228;--brand-text:#F0E8E0;--brand-text-muted:#A89888;--brand-text-light:#786858;--shadow-sm:0 1px 3px rgba(0, 0, 0, 0.3);--shadow-md:0 4px 12px rgba(0, 0, 0, 0.4);--shadow-lg:0 8px 24px rgba(0, 0, 0, 0.5);--shadow-xl:0 16px 48px rgba(0, 0, 0, 0.6)}.nav-header{background:rgb(36 28 24 / .96);border-bottom-color:var(--brand-border)}.card{background:var(--brand-surface);border-color:var(--brand-border)}.card-book{background:var(--brand-surface);border-color:var(--brand-border)}.mood-card--cozy{background:linear-gradient(135deg,#3A2A1A,#2E2218)}.mood-card--thrilling{background:linear-gradient(135deg,#2A1A3A,#221830)}.mood-card--bittersweet{background:linear-gradient(135deg,#3A1A1A,#301818)}.mood-card--mind-bending{background:linear-gradient(135deg,#1A2A3A,#182030)}.mood-card--romantic{background:linear-gradient(135deg,#3A1A2A,#301820)}.mood-card--dark{background:linear-gradient(135deg,#2A2A2A,#222222)}.mood-card--uplifting{background:linear-gradient(135deg,#3A3A1A,#303018)}.mood-card--melancholy{background:linear-gradient(135deg,#1A2030,#182028)}.book-filter__pill{background:var(--brand-surface);border-color:var(--brand-border);color:var(--brand-text-muted)}}html.dark{--brand-bg:#1A1210;--brand-surface:#241C18;--brand-secondary:#2E2420;--brand-secondary-light:#3A2E28;--brand-border:#3D3228;--brand-text:#F0E8E0;--brand-text-muted:#A89888;--brand-text-light:#786858}