:root{--bg:#060b18;--bg-card:#0a1226e0;--bg-input:#ffffff0a;--bg-input-focus:#3b82f614;--border:#3b82f62e;--border-focus:#60a5fa8c;--border-card:#3b82f638;--blue-900:#1e3a5f;--blue-700:#1d4ed8;--blue-600:#2563eb;--blue-500:#3b82f6;--blue-400:#60a5fa;--blue-300:#93c5fd;--blue-200:#bfdbfe;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#475569;--success:#22c55e;--error:#f87171;--warning:#fbbf24;--radius-sm:8px;--radius-md:12px;--radius-lg:20px;--shadow-card:0 25px 60px #0009, 0 0 0 1px var(--border-card), inset 0 1px 0 #ffffff0a;--shadow-glow:0 0 30px #3b82f626;--transition:.2s cubic-bezier(.4, 0, .2, 1)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{background-color:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe 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New,monospace;font-size:15px;font-weight:700}.link{color:var(--text-secondary);text-decoration:none}.link:hover{text-decoration:underline}[hidden]{display:none!important}@media (width<=480px){.auth-card{padding:28px 20px 24px}.dashboard-card{padding:28px 18px}.auth-header h1{font-size:18px}.tab-btn{padding:9px 10px;font-size:13px}.calc-result{flex-direction:column;gap:6px}.result-value{font-size:36px}.header-inner{padding:12px 16px}.user-name{display:none}}