body { 
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif; 
    -webkit-tap-highlight-color: transparent;
}
input, select, textarea { 
    font-size: 16px !important; 
}
::placeholder { 
    color: #94a3b8 !important; 
    opacity: 1; 
}
input[type="datetime-local"]::-webkit-datetime-edit { 
    color: #94a3b8; 
}
input[type="datetime-local"]:focus::-webkit-datetime-edit { 
    color: #334155; 
}
.recording-active { 
    animation: pulse 1.5s infinite; 
    background-color: #fee2e2 !important; 
    color: #ef4444 !important; 
}
@keyframes pulse { 
    0% { opacity: 1; } 
    50% { opacity: 0.5; } 
    100% { opacity: 1; } 
}
/* スマホ向けの微調整 */
@media (max-width: 640px) {
    .max-w-md {
        padding-bottom: 40px;
    }
}