:root{--primary-blue: #2563eb;--dark-blue: #1d4ed8;--light-blue: #3b82f6;--background: #ffffff;--surface: #f8fafc;--text-primary: #1e293b;--text-secondary: #64748b;--border: #e2e8f0;--shadow: rgba(0, 0, 0, .1);--shadow-hover: rgba(0, 0, 0, .15)}[data-theme=dark]{--primary-blue: #3b82f6;--dark-blue: #2563eb;--light-blue: #60a5fa;--background: #0f172a;--surface: #1e293b;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--border: #334155;--shadow: rgba(0, 0, 0, .3);--shadow-hover: rgba(0, 0, 0, .4)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background-color:var(--background);color:var(--text-primary);line-height:1.6;transition:background-color .3s ease,color .3s ease}.scroll-to-top{position:fixed;bottom:2rem;right:2rem;z-index:999;display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;border:none;cursor:pointer;background-color:var(--primary-blue);color:#fff;box-shadow:var(--shadow-hover);opacity:.9;transition:opacity .2s ease,transform .2s ease}.scroll-to-top:hover{opacity:1;transform:translateY(-3px)}.scroll-to-top:active{transform:translateY(0);opacity:.85}@media (max-width: 900px){.scroll-to-top{bottom:5.5rem;right:1.25rem}}.page-loader{display:flex;align-items:center;justify-content:center;min-height:60vh}.page-loader__spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary-blue);border-radius:50%;animation:page-loader-spin .7s linear infinite}@keyframes page-loader-spin{to{transform:rotate(360deg)}}.pwa-banner{position:fixed;bottom:0;left:0;right:0;z-index:1000;display:flex;align-items:center;gap:.75rem;padding:.875rem 1.25rem;background-color:var(--surface);border-top:1px solid var(--border);box-shadow:var(--shadow);animation:pwa-slide-up .3s ease-out}@keyframes pwa-slide-up{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}.pwa-banner-icon{color:var(--primary-blue);flex-shrink:0}.pwa-banner-text{flex:1;font-size:.9rem;color:var(--text-primary)}.pwa-banner-actions{display:flex;align-items:center;gap:.5rem;flex-shrink:0}.pwa-banner-update-btn{padding:.4rem 1rem;background-color:var(--primary-blue);color:#fff;border:none;border-radius:6px;font-size:.875rem;font-weight:600;cursor:pointer;transition:opacity .2s}.pwa-banner-update-btn:hover{opacity:.85}.pwa-banner-dismiss-btn{display:flex;align-items:center;justify-content:center;padding:.35rem;background:transparent;border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);cursor:pointer;transition:color .2s,border-color .2s}.pwa-banner-dismiss-btn:hover{color:var(--text-primary);border-color:var(--text-secondary)}.pwa-install-banner{position:fixed;bottom:1rem;left:50%;transform:translate(-50%);z-index:1100;width:min(420px,calc(100vw - 2rem));background-color:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-hover);padding:1.1rem 1.25rem 1rem;display:flex;flex-direction:column;gap:.65rem;animation:pwa-install-pop .35s cubic-bezier(.34,1.56,.64,1)}@keyframes pwa-install-pop{0%{transform:translate(-50%) translateY(30px);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.pwa-install-banner-header{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.pwa-install-banner-title{display:flex;align-items:center;gap:.5rem;font-size:.95rem;font-weight:700;color:var(--text-primary)}.pwa-install-banner-icon{color:var(--primary-blue);flex-shrink:0}.pwa-install-close-btn{display:flex;align-items:center;justify-content:center;padding:.3rem;background:transparent;border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);cursor:pointer;flex-shrink:0;transition:color .2s,border-color .2s}.pwa-install-close-btn:hover{color:var(--text-primary);border-color:var(--text-secondary)}.pwa-install-banner-desc{font-size:.85rem;color:var(--text-secondary);line-height:1.45;margin:0}.pwa-install-instructions{background-color:var(--background);border:1px solid var(--border);border-radius:8px;padding:.75rem .9rem}.pwa-install-instructions-title{font-size:.82rem;font-weight:600;color:var(--text-primary);margin:0 0 .5rem}.pwa-install-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.4rem}.pwa-install-steps li{display:flex;align-items:flex-start;gap:.45rem;font-size:.82rem;color:var(--text-secondary);line-height:1.4}.pwa-install-step-icon{display:flex;align-items:center;color:var(--primary-blue);flex-shrink:0;margin-top:1px}.pwa-install-action-btn{display:flex;align-items:center;justify-content:center;gap:.5rem;width:100%;padding:.6rem 1rem;background-color:var(--primary-blue);color:#fff;border:none;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:opacity .2s}.pwa-install-action-btn:hover:not(:disabled){opacity:.85}.pwa-install-action-btn:disabled{opacity:.6;cursor:not-allowed}.pwa-install-never-btn{background:transparent;border:none;padding:0;font-size:.78rem;color:var(--text-secondary);cursor:pointer;text-align:center;text-decoration:underline;transition:color .2s}.pwa-install-never-btn:hover{color:var(--text-primary)}