.weight-class-container{max-width:500px;margin:2rem auto;padding:2rem;border-radius:1rem;background:var(--bg-primary);border:1px solid var(--border-color);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;font-family:var(--font-primary);transition:all var(--transition-speed) ease}.weight-class-container:hover{box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d;transform:translateY(-2px)}.weight-class-title{font-size:1.75rem;font-weight:700;text-align:center;margin-bottom:1.5rem;color:var(--text-primary);letter-spacing:-.025em}.unit-toggle{display:flex;gap:1rem;margin-bottom:2rem;padding:.5rem;background:var(--bg-secondary);border-radius:.75rem;border:1px solid var(--border-color)}.unit-toggle label{flex:1;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1rem;border-radius:.5rem;font-size:.875rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-speed) ease;position:relative}.unit-toggle input[type=radio]{position:absolute;opacity:0;width:0;height:0}.unit-toggle input[type=radio]:checked+label{background:var(--accent-color);color:#fff;box-shadow:0 2px 4px #f43f5e4d}.unit-toggle label:hover{background:#f43f5e1a;color:var(--accent-color)}.inputs{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem}.inputs input{padding:1rem 1.25rem;border:2px solid var(--border-color);border-radius:.75rem;font-size:1rem;font-weight:500;color:var(--text-primary);background:var(--bg-primary);transition:all var(--transition-speed) ease;width:100%;min-height:48px}.inputs input[type=date]{position:relative;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none}.inputs input[type=date]::-webkit-calendar-picker-indicator{background:transparent;color:transparent;cursor:pointer;height:100%;width:100%;position:absolute;top:0;left:0;margin:0;padding:0;border:none}.inputs input[type=date]::-webkit-datetime-edit{padding:0;color:var(--text-primary)}.inputs input[type=date]::-webkit-datetime-edit-fields-wrapper{padding:0}.inputs input[type=date]::-webkit-datetime-edit-text{color:var(--text-secondary);padding:0 .25rem}.inputs input[type=date]::-webkit-datetime-edit-month-field,.inputs input[type=date]::-webkit-datetime-edit-day-field,.inputs input[type=date]::-webkit-datetime-edit-year-field{color:var(--text-primary);font-weight:500}.inputs input[type=date]::-moz-calendar-picker-indicator{background:transparent;color:transparent;cursor:pointer;height:100%;width:100%;position:absolute;top:0;left:0;margin:0;padding:0;border:none}.inputs input::placeholder{color:var(--text-secondary);font-weight:400}.inputs input:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px #f43f5e1a;transform:translateY(-1px)}.inputs input:hover{border-color:var(--accent-color)}.result-card{background:linear-gradient(135deg,var(--bg-secondary) 0%,rgba(244,63,94,.05) 100%);border-radius:1rem;border:1px solid var(--border-color);padding:1.5rem;margin-top:1rem;text-align:center}.result-card p{font-size:1rem;font-weight:500;color:var(--text-secondary);margin-bottom:.75rem;line-height:1.4}.result-card strong{font-weight:600;color:var(--accent-color)}.alert{padding:1rem 1.25rem;border-radius:.75rem;margin:1rem 0;font-size:.875rem;font-weight:500;line-height:1.4;border:1px solid;transition:all var(--transition-speed) ease}.alert-ok{background:#22c55e1a;border-color:#22c55e4d;color:#16a34a}.alert-caution{background:#f59e0b1a;border-color:#f59e0b4d;color:#f59e0b}.alert-risk{background:#ef44441a;border-color:#ef44444d;color:#dc2626}.cta{margin-top:1.5rem;padding:1rem 1.25rem;background:#3b82f60d;border:1px solid rgba(59,130,246,.2);border-radius:.75rem;font-size:.875rem;color:var(--text-secondary);line-height:1.4}.cta a{color:#2563eb;font-weight:600;text-decoration:none;transition:all var(--transition-speed) ease}.cta a:hover{color:#1d4ed8;text-decoration:underline}.date-message{text-align:center;padding:1rem 1.25rem;background:#3b82f61a;border:1px solid rgba(59,130,246,.3);border-radius:.75rem;color:#2563eb;font-weight:500;margin-top:1rem}@media (max-width: 640px){.weight-class-container{margin:1rem auto;padding:1.5rem}.weight-class-title{font-size:1.5rem}.unit-toggle{flex-direction:column;gap:.5rem}}@media (max-width: 480px){.weight-class-container{padding:1rem}.inputs input{padding:.875rem 1rem;min-height:44px;font-size:16px}.inputs input[type=date]{font-size:16px;-webkit-text-size-adjust:100%}.result-card{padding:1rem}.result-card p{font-size:.875rem}.alert,.cta{padding:.875rem 1rem;font-size:.8rem}.date-message{padding:.875rem 1rem;font-size:.875rem}}@media (prefers-color-scheme: dark){.weight-class-container{background:var(--bg-primary);border-color:var(--border-color)}.unit-toggle{background:var(--bg-secondary);border-color:var(--border-color)}.inputs input{background:var(--bg-primary);border-color:var(--border-color);color:var(--text-primary)}.result-card{background:linear-gradient(135deg,var(--bg-secondary) 0%,rgba(244,63,94,.1) 100%);border-color:var(--border-color)}.alert-ok{background:#22c55e26;border-color:#22c55e66}.alert-caution{background:#f59e0b26;border-color:#f59e0b66}.alert-risk{background:#ef444426;border-color:#ef444466}.cta{background:#3b82f61a;border-color:#3b82f64d}.date-message{background:#3b82f626;border-color:#3b82f666}}