*,*:before,*:after{box-sizing:border-box}*{margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;line-height:1.5;color:#1a1a1a;background:#f5f7fa}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}button{cursor:pointer}:focus-visible{outline:2px solid #0066cc;outline-offset:2px}:focus:not(:focus-visible){outline:none}.instrument-selector{display:flex;align-items:center;gap:12px;padding:16px;background:#f8f9fa;border-radius:8px;margin-bottom:24px}.selector-label{font-weight:500;color:#333}.select-wrapper{position:relative;min-width:200px}.select-button{display:flex;align-items:center;justify-content:space-between;width:100%;padding:10px 16px;font-size:16px;border:1px solid #ddd;border-radius:6px;background:#fff;cursor:pointer;transition:border-color .2s,box-shadow .2s}.select-button:hover{border-color:#888}.select-button:focus{outline:none;border-color:#06c;box-shadow:0 0 0 3px #0066cc26}.select-button.open{border-color:#06c;box-shadow:0 0 0 3px #0066cc26}.select-button-text{flex:1;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.select-button-arrow{margin-left:8px;font-size:12px;color:#666;transition:transform .2s}.select-button.open .select-button-arrow{transform:rotate(180deg)}.select-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;background:#fff;border:1px solid #ddd;border-radius:6px;box-shadow:0 4px 12px #00000026;z-index:100;max-height:300px;overflow:hidden;display:flex;flex-direction:column}.search-container{padding:8px;border-bottom:1px solid #eee}.search-input{width:100%;padding:8px 12px;font-size:14px;border:1px solid #ddd;border-radius:4px;outline:none;transition:border-color .2s,box-shadow .2s;box-sizing:border-box}.search-input:focus{border-color:#06c;box-shadow:0 0 0 2px #0066cc26}.search-input::placeholder{color:#999}.options-list{list-style:none;margin:0;padding:0;overflow-y:auto;max-height:240px}.option-item{padding:10px 16px;cursor:pointer;transition:background-color .15s}.option-item:hover{background-color:#f0f7ff}.option-item:focus{outline:none;background-color:#e6f2ff}.option-item.selected{background-color:#e6f2ff;font-weight:500}.no-results{padding:16px;text-align:center;color:#666;cursor:default}.loading-text,.error-text{color:#666}.instrument-selector.error{background:#fff5f5;border:1px solid #ffcccc}.error-text{color:#c00}@media(max-width:600px){.instrument-selector{flex-direction:column;align-items:stretch;gap:12px;width:100%;padding:20px;margin-bottom:16px}.selector-label{font-size:16px;order:-1}.select-wrapper{width:100%;min-width:unset}.select-button{padding:16px;font-size:18px;min-height:48px}.search-input{font-size:16px;padding:12px}.option-item{padding:14px 16px;font-size:16px}}.price-card{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 8px #00000014;border-left:4px solid #ccc;transition:transform .2s,box-shadow .2s}.price-card.flash-positive{animation:flash-green 1.5s ease-out}.price-card.flash-negative{animation:flash-red 1.5s ease-out}@keyframes flash-green{0%{background:#22c55e4d;box-shadow:0 0 20px #22c55e66}to{background:#fff;box-shadow:0 2px 8px #00000014}}@keyframes flash-red{0%{background:#ef44444d;box-shadow:0 0 20px #ef444466}to{background:#fff;box-shadow:0 2px 8px #00000014}}.price-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px #0000001f}.price-card.positive{border-left-color:#22c55e;background:linear-gradient(to right,#f0fdf4,#fff)}.price-card.negative{border-left-color:#ef4444;background:linear-gradient(to right,#fef2f2,#fff)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.exchange-name{margin:0;font-size:18px;font-weight:600;color:#1a1a1a;text-transform:uppercase;letter-spacing:.5px}.change-indicator{font-size:20px}.change-indicator.up{color:#22c55e}.change-indicator.down{color:#ef4444}.price-value{font-size:28px;font-weight:700;color:#1a1a1a;margin-bottom:8px}.currency{font-size:14px;font-weight:400;color:#666;margin-left:4px}.card-footer{display:flex;justify-content:flex-start}.price-change{font-size:14px;font-weight:500}.price-change.positive{color:#22c55e}.price-change.negative{color:#ef4444}.home-page{max-width:1200px;margin:0 auto;padding:24px}.page-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin-bottom:32px;position:relative}.header-actions{display:flex;align-items:center;gap:12px}.page-header h1{font-size:28px;font-weight:700;color:#1a1a1a;margin:0;flex:1}.user-section{display:flex;align-items:center;gap:12px;position:relative}.user-avatar{padding:8px;background:#f0f0f0;border:none;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background-color .2s;color:#666}.user-avatar:hover{background:#e0e0e0}.user-avatar:focus-visible{outline:2px solid #0066cc;outline-offset:2px}.user-menu{position:absolute;top:100%;right:0;background:#fff;border:1px solid #ddd;border-radius:8px;box-shadow:0 8px 24px #00000026;min-width:180px;z-index:1000;margin-top:4px;padding:12px}.menu-item{padding:16px 20px;width:100%;text-align:left;border:none;background:none;cursor:pointer;font-size:14px;display:block}.menu-item:hover{background:#f8f9fa}.menu-item.user-name{font-weight:600;color:#1a1a1a;cursor:default;border-bottom:1px solid #eee}.menu-item.user-name:hover{background:none}.menu-item.user-full-name{font-weight:500;color:#666;cursor:default;font-size:13px;padding-bottom:4px}.menu-item.user-full-name:hover{background:none}.logout-button{padding:16px 20px;font-size:14px;font-weight:500;color:#dc2626;background:transparent;border:1px solid #fecaca;border-radius:6px;cursor:pointer;transition:background-color .2s,border-color .2s;width:auto}.logout-button:hover{background:#fef2f2;border-color:#dc2626}.controls-section{display:flex;justify-content:flex-start;align-items:center;flex-wrap:wrap;gap:16px;margin-bottom:24px}.connection-status{display:flex;align-items:center;gap:8px;padding:8px 16px;background:#f8f9fa;border-radius:20px;font-size:14px;color:#666;position:relative}.status-dot-wrapper{cursor:pointer;display:flex;align-items:center;padding:4px;border-radius:50%;transition:background-color .2s}.status-dot-wrapper:hover{background:#0000001a}.status-dot-wrapper:focus-visible{outline:2px solid #0066cc;outline-offset:2px}.status-dot{width:10px;height:10px;border-radius:50%;animation:pulse 2s infinite}.status-dot.connected{background:#22c55e}.status-dot.connecting{background:#f59e0b}.status-dot.disconnected{background:#ef4444}.status-text{font-weight:500}.status-tooltip{position:absolute;top:110%;left:50%;transform:translate(-50%);background:#333;color:#fff;padding:8px 12px;border-radius:6px;font-size:13px;white-space:nowrap;z-index:1000;box-shadow:0 4px 12px #0003}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.error-banner{background:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:12px 16px;border-radius:8px;margin-bottom:24px}.prices-section{margin-top:24px}.section-title{font-size:20px;font-weight:600;color:#333;margin-bottom:20px}.prices-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.hint-text{color:#888;font-style:italic;text-align:center;margin-top:40px}.loading-indicator{display:flex;align-items:center;justify-content:center;gap:12px;padding:40px 20px;color:#666;font-size:16px}.loading-spinner{width:24px;height:24px;border:3px solid #e5e7eb;border-top-color:#3b82f6;border-radius:50%;animation:spin 1s linear infinite}@media(max-width:600px){.home-page{padding:12px}.page-header{margin-bottom:20px}.page-header h1{display:none}.header-actions{width:100%;justify-content:space-between}.user-section{width:auto}.controls-section{margin-bottom:12px}.status-text{display:none}.status-tooltip{top:120%}.prices-section{margin-top:8px}.section-title{font-size:18px;margin-bottom:16px}}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem;background:linear-gradient(135deg,#667eea,#764ba2)}.login-container{width:100%;max-width:400px;background:#fff;border-radius:12px;box-shadow:0 10px 40px #0003;overflow:hidden}.login-header{padding:2rem 2rem 1.5rem;text-align:center;background:#f8f9fa;border-bottom:1px solid #e9ecef}.login-header h1{font-size:1.5rem;font-weight:600;color:#1a1a1a;margin-bottom:.5rem}.login-header p{font-size:.875rem;color:#6c757d}.login-form{padding:1.5rem 2rem 2rem}.error-message{background:#fff5f5;border:1px solid #feb2b2;color:#c53030;padding:.75rem 1rem;border-radius:6px;margin-bottom:1rem;font-size:.875rem}.form-group{margin-bottom:1.25rem}.form-group label{display:block;font-size:.875rem;font-weight:500;color:#374151;margin-bottom:.5rem}.form-group input{width:100%;padding:.75rem 1rem;font-size:1rem;border:1px solid #d1d5db;border-radius:6px;background:#fff;color:#1a1a1a;transition:border-color .2s,box-shadow .2s}.form-group input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea26}.form-group input::placeholder{color:#9ca3af}.form-group input:disabled{background:#f3f4f6;cursor:not-allowed}.login-button{width:100%;padding:.875rem 1rem;font-size:1rem;font-weight:500;color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:6px;cursor:pointer;transition:opacity .2s,transform .1s}.login-button:hover:not(:disabled){opacity:.9}.login-button:active:not(:disabled){transform:scale(.98)}.login-button:disabled{opacity:.6;cursor:not-allowed}@media(max-width:480px){.login-container{border-radius:8px}.login-header{padding:1.5rem 1.5rem 1rem}.login-form{padding:1rem 1.5rem 1.5rem}}.app{min-height:100vh;background:#f5f7fa}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:16px;color:#666;font-size:16px}.loading-screen .loading-spinner{width:32px;height:32px;border:3px solid #e5e7eb;border-top-color:#667eea;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}