body {
    font-family: 'Inter', sans-serif;
}

/* Active Step Highlight 
   Used in the AI routine list to show which step is currently playing.
   Responsive border width based on screen size.
*/
.active-step {
    border-left: 6px solid #2563eb;
    background-color: #eff6ff;
}

@media (min-width: 768px) {
    .active-step {
        border-left: 8px solid #2563eb;
    }
}

/* Custom Range Slider Styling 
   Browsers (Chrome vs Firefox) handle range sliders differently.
   We need explicit styles for the track and the thumb (handle).
*/

/* Track Styling */
input[type=range] {
    -webkit-appearance: none;
    /* Hides default slider so we can create custom one */
    width: 100%;
    height: 20px;
    border-radius: 10px;
    background: #d1d5db;
    outline: none;
}

@media (min-width: 640px) {
    input[type=range] {
        height: 24px;
        border-radius: 12px;
    }
}

/* Thumb (Handle) Styling - Webkit (Chrome, Safari) */
input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #2563eb;
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@media (min-width: 640px) {
    input[type=range]::-webkit-slider-thumb {
        width: 42px;
        height: 42px;
        border: 4px solid white;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
}

@media (min-width: 768px) {
    input[type=range]::-webkit-slider-thumb {
        width: 48px;
        height: 48px;
    }
}

/* Thumb (Handle) Styling - Mozilla (Firefox) */
input[type=range]::-moz-range-thumb {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #2563eb;
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

@media (min-width: 640px) {
    input[type=range]::-moz-range-thumb {
        width: 42px;
        height: 42px;
        border: 4px solid white;
    }
}

@media (min-width: 768px) {
    input[type=range]::-moz-range-thumb {
        width: 48px;
        height: 48px;
    }
}

/* Custom Select Dropdown 
   Hides default arrow and replaces it with a custom SVG arrow 
   for consistent look across browsers.
*/
select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23007CB2%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 0.8em;
    padding-right: 2rem;
}

@media (min-width: 640px) {
    select {
        background-position: right 1rem center;
        background-size: 1em;
        padding-right: 2.5rem;
    }
}

/* Button Active States */
#tapZone:active {
    background-color: #6366f1;
    /* Indigo-500 */
}

.history-item:hover {
    background-color: #f3f4f6;
}

/* Ensure text doesn't break awkwardly on small screens */
.history-item span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Step items responsive text size */
.step-item {
    font-size: 0.875rem;
}

@media (min-width: 640px) {
    .step-item {
        font-size: 1rem;
    }
}

@media (min-width: 768px) {
    .step-item {
        font-size: 1.125rem;
    }
}

@media (min-width: 1024px) {
    .step-item {
        font-size: 1.25rem;
    }
}

/* Show the info popup when hovering the button OR the popup itself */
#infoBtn:hover+#infoModal,
#infoModal:hover {
    display: block;
}

/* NEW: Force open class (toggled by JS) */
#infoModal.stay-open {
    display: block !important;
}