*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #f5f7fa;--color-surface: #ffffff;--color-border: #d1d5db;--color-text: #111827;--color-text-secondary: #6b7280;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-danger: #dc2626;--color-warn-bg: #fef3c7;--color-warn-border: #f59e0b;--color-warn-text: #92400e;--color-info-bg: #dbeafe;--color-info-border: #3b82f6;--color-info-text: #1e40af;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1), 0 1px 2px rgba(0, 0, 0, .06)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5;min-height:100vh}.loading{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--color-text-secondary);font-size:1rem}.login-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:1rem}.login-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:2rem;width:100%;max-width:380px}.login-card h1{font-size:1.25rem;font-weight:600;margin-bottom:1.5rem;text-align:center}.form-group{display:flex;flex-direction:column;gap:.25rem;margin-bottom:1rem}.form-group label{font-size:.875rem;font-weight:500;color:var(--color-text)}.form-group input{padding:.5rem .75rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:1rem;color:var(--color-text);background:var(--color-surface);transition:border-color .15s}.form-group input:focus{outline:2px solid var(--color-primary);outline-offset:1px;border-color:var(--color-primary)}.form-group input:disabled{opacity:.6;cursor:not-allowed}.error-message{background:#fee2e2;border:1px solid #fca5a5;border-radius:var(--radius);color:var(--color-danger);font-size:.875rem;padding:.5rem .75rem;margin-bottom:1rem}.btn-primary{width:100%;padding:.625rem 1rem;background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius);font-size:1rem;font-weight:500;cursor:pointer;transition:background .15s}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.app{display:flex;flex-direction:column;min-height:100vh}.header{background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:.75rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem}.header h1{font-size:1.125rem;font-weight:600}.header-right{display:flex;align-items:center;gap:1rem}.username{font-size:.875rem;color:var(--color-text-secondary)}.btn-secondary{padding:.375rem .75rem;background:transparent;color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius);font-size:.875rem;cursor:pointer;transition:background .15s,border-color .15s}.btn-secondary:hover{background:var(--color-bg);border-color:#9ca3af}.banner{padding:.625rem 1.5rem;font-size:.875rem;font-weight:500}.banner-warn{background:var(--color-warn-bg);border-bottom:1px solid var(--color-warn-border);color:var(--color-warn-text)}.banner-info{background:var(--color-info-bg);border-bottom:1px solid var(--color-info-border);color:var(--color-info-text)}.entity-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem;padding:1.5rem}.entity-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.25rem;display:flex;flex-direction:column;gap:.5rem}.entity-label{font-size:.875rem;font-weight:500;color:var(--color-text-secondary)}.entity-state{font-size:1.5rem;font-weight:600;color:var(--color-text)}.entity-unit{font-size:1rem;font-weight:400;color:var(--color-text-secondary)}.entity-updated{font-size:.75rem;color:var(--color-text-secondary)}.toggle-btn{margin-top:.5rem;padding:.5rem .75rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:.875rem;font-weight:500;cursor:pointer;transition:background .15s,color .15s,border-color .15s;background:var(--color-bg);color:var(--color-text)}.toggle-btn.on{background:#dcfce7;border-color:#86efac;color:#15803d}.toggle-btn.on:hover:not(:disabled){background:#bbf7d0}.toggle-btn.off{background:var(--color-bg);border-color:var(--color-border);color:var(--color-text-secondary)}.toggle-btn.off:hover:not(:disabled){background:#e5e7eb}.toggle-btn:disabled{opacity:.6;cursor:not-allowed}.toast-container{position:fixed;bottom:1.5rem;right:1.5rem;display:flex;flex-direction:column;gap:.5rem;z-index:100;max-width:360px}.toast{background:#1f2937;color:#f9fafb;border-radius:var(--radius);padding:.75rem 1rem;font-size:.875rem;box-shadow:0 4px 6px #0000001a;animation:toast-in .2s ease}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}