/* Per-page styles for study-tips.html */
/* Input focus & counter */
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #0d9488;
    box-shadow: 0 0 0 1px #0d9488;
}
.counter { font-variant-numeric: tabular-nums; }

/* Small utility to prevent horizontal overflow + hide scrollbar like student-login.html */
html, body { 
    overflow-x: hidden; 
    scrollbar-width: none;      /* Firefox */
    -ms-overflow-style: none;   /* IE and Edge */
}
html::-webkit-scrollbar, body::-webkit-scrollbar { display: none; }
img { max-width: 100%; height: auto; display: block; }

/* Slow ping ring */
@keyframes ping-slow {
  75%, 100% { transform: scale(2); opacity: 0; }
}
.animate-ping-slow { animation: ping-slow 3.5s cubic-bezier(0, 0, 0.2, 1) infinite; }

/* Gentle WhatsApp button pulse */
@keyframes whatsapp { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }
.animate-whatsapp { animation: whatsapp 3s ease-in-out infinite; }