:root{--chat-bg-primary:#141618;--chat-bg-secondary:#181a1c;--chat-bg-tertiary:#1a1c1e;--chat-bg-input:#242424;--chat-bg-input-focus:#2a2a2a;--chat-bg-user-message:#232323;--chat-bg-user-message-hover:#252525;--chat-overlay-subtle:rgba(255,255,255,0.02);--chat-overlay-soft:rgba(255,255,255,0.03);--chat-overlay-active:rgba(255,255,255,0.04);--chat-overlay-input:rgba(255,255,255,0.05);--chat-overlay-input-focus:rgba(255,255,255,0.08);--chat-overlay-hover:rgba(255,255,255,0.1);--chat-overlay-dark:rgba(0,0,0,0.5);--sidebar-search-overlay:rgba(255,255,255,0.03);--sidebar-search-overlay-focus:rgba(255,255,255,0.05);--sidebar-item-hover:rgba(255,255,255,0.07);--sidebar-item-active:rgba(255,255,255,0.09);--chat-text-primary:#b5bcc4;--chat-text-secondary:#a1a9b1;--chat-text-success:#22c55e;--chat-text-error:#ef4444;--chat-text-error-hover:#dc2626;--chat-accent-primary:#e55a2b;--chat-accent-hover:#f5652c;--chat-border-subtle:rgba(255,255,255,0.1);--chat-border-soft:rgba(255,255,255,0.08);--chat-bg-success:rgba(34,197,94,0.1);--chat-bg-error:rgba(239,68,68,0.1);--chat-bg-error-hover:rgba(239,68,68,0.2);--chat-border-error:rgba(239,68,68,0.3);--chat-font-size-base:15.5px;--chat-line-height-normal:1.5;--chat-line-height-relaxed:1.75;--chat-space-sm:8px;--chat-space-md:12px;--chat-space-lg:16px;--chat-space-xl:24px;--chat-selection-bg:rgba(255,255,255,0.08);--chat-selection-text:#ffffff;--chat-container-width:1000px;--chat-padding-horizontal:24px;--chat-space-2xl:32px;--chat-radius-md:8px;--chat-radius-lg:12px;--chat-radius-xl:16px;--chat-radius-2xl:20px;--chat-transition-fast:0.15s 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100%),var(--chat-bg-primary);--chat-gradient-kebab:var(--chat-gradient-block);--blk-bg:var(--chat-gradient-block);--blk-fg:var(--chat-text-secondary)}.chat-theme-blue,body.chat-theme-blue{--chat-bg-primary:#192d45;--chat-bg-secondary:#1d3041;--chat-bg-tertiary:#22364a;--chat-bg-input:#26384a;--chat-bg-input-focus:#2b3e52;--chat-bg-user-message:#26384a;--chat-bg-user-message-hover:#2b3e52;--chat-overlay-subtle:#213241;--chat-overlay-soft:#26384a;--chat-overlay-active:#2b3e52;--chat-overlay-input:#26384a;--chat-overlay-input-focus:#2b3e52;--chat-overlay-hover:#2b3e52;--chat-text-primary:#e8eaed;--chat-text-secondary:#bfc5cb;--sidebar-search-overlay:#324458;--sidebar-search-overlay-focus:#364a60;--sidebar-item-hover:#3a4f65;--sidebar-item-active:#3e546a;--chat-border-subtle:transparent;--chat-border-soft:transparent;--chat-gradient-block:linear-gradient(135deg,#2d3f55,#33475f 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