:root{--z-sticky:200;--z-toast:10001;--z-tooltip:800;--z-max:9999;--z-overlay:9998;--primary:#2c3e50;--primary-dark:#1a252f;--primary-600:#486581;--accent-100:#dbeafe;--accent-500:#3b82f6;--accent:#3b82f6;--accent-light:#60a5fa;--accent-dark:#2563eb;--success:#059669;--success-light:#10b981;--warning:#d97706;--warning-light:#f59e0b;--danger:#dc2626;--danger-light:#ef4444;--info:#0891b2;--font-size-xs:clamp(0.75rem,0.7rem + 0.25vw,0.875rem);--font-size-sm:clamp(0.875rem,0.8rem + 0.375vw,1rem);--font-size-base:clamp(1rem,0.925rem + 0.375vw,1.125rem);--font-size-lg:clamp(1.125rem,1rem + 0.625vw,1.375rem);--font-size-xl:clamp(1.25rem,1.1rem + 0.75vw,1.625rem);--font-size-2xl:clamp(1.5rem,1.25rem + 1.25vw,2.25rem);--white:#ffffff;--gray-50:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-400:#94a3b8;--gray-500:#64748b;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;--gray-900:#0f172a;--bg-body:#f8fafc;--bg-card:#ffffff;--shadow-sm:0 1px 2px rgba(0,0,0,0.04),0 1px 3px rgba(0,0,0,0.08);--shadow-md:0 2px 4px rgba(0,0,0,0.04),0 4px 8px rgba(0,0,0,0.08),0 1px 2px rgba(0,0,0,0.04);--shadow-lg:0 4px 8px rgba(0,0,0,0.04),0 8px 16px rgba(0,0,0,0.08),0 16px 32px rgba(0,0,0,0.06);--shadow-xl:0 8px 16px rgba(0,0,0,0.04),0 16px 32px rgba(0,0,0,0.08),0 24px 48px rgba(0,0,0,0.08);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--transition-fast:0.2s cubic-bezier(0.25,0.46,0.45,0.94);--transition-normal:0.3s cubic-bezier(0.25,0.46,0.45,0.94);--spring:0.5s cubic-bezier(0.34,1.56,0.64,1);--font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif,'Noto Sans 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var(--spring);font-weight:500;backdrop-filter:blur(8px)}@keyframes toastSlideIn{from{opacity:0;transform:translateX(100%) scale(0.8)}to{opacity:1;transform:translateX(0) scale(1)}}@media (max-width:480px){#toast-container{right:12px;left:12px}.toast{min-width:0;width:100%;max-width:none;font-size:14px;padding:14px 18px}}body.dark-theme{--bg-body:#0c1017;--bg-card:#161c2e;--primary:#f8fafc;--gray-50:#1e293b;--gray-100:#334155;--gray-200:#475569;--gray-300:#64748b;--gray-400:#94a3b8;--gray-500:#cbd5e1;--gray-600:#e2e8f0;--gray-700:#f1f5f9;--white:#f8fafc;--accent:#60a5fa;--accent-light:#93c5fd;--accent-dark:#3b82f6;--success:#34d399;--warning:#fbbf24;--danger:#f87171;--shadow-sm:0 1px 2px rgba(0,0,0,0.5),0 0 0 1px rgba(255,255,255,0.03);--shadow-md:0 4px 6px rgba(0,0,0,0.5),0 0 0 1px rgba(255,255,255,0.03);--shadow-lg:0 10px 20px rgba(0,0,0,0.5),0 0 0 1px rgba(255,255,255,0.03);--shadow-xl:0 20px 40px rgba(0,0,0,0.5),0 0 0 1px rgba(255,255,255,0.03)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);border-radius:var(--radius-md);font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;background:var(--gray-100);color:var(--gray-700)}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn:active{transform:translateY(0)}.btn:disabled,.btn[disabled]{opacity:0.6;cursor:not-allowed;transform:none}.btn-primary{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-light) 100%);color:var(--white);box-shadow:0 4px 14px rgba(59,130,246,0.35)}.btn-secondary{background:var(--gray-100);color:var(--gray-700);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background:var(--gray-200)}.btn-danger{background:linear-gradient(135deg,var(--danger) 0%,var(--danger-light) 100%);color:var(--white)}.btn-sm{padding:var(--space-2) 12px;font-size:13px}.hidden{display:none !important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}button,a,input,select,textarea{font-family:inherit}a:not([class]){color:var(--accent);text-decoration:underline;text-underline-offset:3px}a:not([class]):hover{color:var(--accent-dark)}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--gray-300);border-radius:var(--radius-full);border:2px solid transparent;background-clip:padding-box}::-webkit-scrollbar-thumb:hover{background:var(--gray-400);background-clip:padding-box}