:root{
--font-sans:Inter,"Noto Sans Bengali",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-7:32px;--space-8:40px;--space-9:48px;
--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:22px;
--sidebar-width:272px;--sidebar-collapsed-width:78px;--topbar-height:70px;
--motion-fast:140ms;--motion-normal:220ms;--motion-slow:340ms;
--bg:#f4f6fa;--surface:#ffffff;--surface-2:#f8f9fc;--surface-3:#eef1f6;--text:#162033;--muted:#667085;--border:#e4e7ec;
--primary:#4f46e5;--primary-hover:#4338ca;--primary-soft:rgba(79,70,229,.09);
--success:#16a34a;--danger:#dc2626;--warning:#d97706;--info:#0284c7;
--shadow-sm:0 1px 2px rgba(16,24,40,.04);--shadow-md:0 10px 30px rgba(16,24,40,.07);--shadow-lg:0 24px 60px rgba(16,24,40,.12);
}
[data-theme=dark]{
--bg:#080c13;--surface:#101722;--surface-2:#151e2b;--surface-3:#1b2635;--text:#f4f7fb;--muted:#98a2b3;--border:#273244;
--primary:#818cf8;--primary-hover:#a5b4fc;--primary-soft:rgba(129,140,248,.13);
--success:#4ade80;--danger:#f87171;--warning:#fbbf24;--info:#38bdf8;
--shadow-sm:0 1px 2px rgba(0,0,0,.28);--shadow-md:0 12px 34px rgba(0,0,0,.32);--shadow-lg:0 26px 70px rgba(0,0,0,.42);
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:var(--font-sans);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}button,input{font:inherit}button{min-height:44px}