*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}
.app-title {
    text-align: center;
    margin-top: 20px;     /* pushes it down from top */
    margin-bottom: 16px;
    font-size: 32px;      /* bigger title */
    font-weight: 700;
    color: white;         /* keep theme */
}

.app-title {
    letter-spacing: 1px;
    opacity: 0.9;
}

html,body{
    width:100%;
}

html{
    font-family: system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu;
    background-color:var(--bg-primary-color);
    color:var(--text-primary-color);
}

main{
    width:100%;
}

main section{
    width:100%;
    padding: var(--padding-2xl);
    display:flex;
    gap:var(--gutter-lg);
}

.btn{
    padding: var(--padding-sm) var(--padding-lg);
    border:none;
    outline:none;
    border-radius:var(--border-radius-sm);
    background-color:var(--bg-active-color);
    color:var(--text-active-color)
}
#reset-btn{
    background-color:var(--bg-danger-color);
    color:var(--text-primary-color);
}
#download-btn{
    background-color:var(--bg-success-color);
    color:var(--text-primary-color);
}

main section .left{
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:var(--gutter-lg);
    width:70%;
}

main section .right{
    width:30%;
    background-color:var(--bg-secondary-color);
    padding:var(--padding-lg);
    gap:var(--gutter-md);
}

main section .top{
    display:flex;
    align-items:center;
    gap:var(--gutter-md);
}
main section .bottom{
    background-color:var(--bg-secondary-color);
    width:100%;
    padding:var(--padding-2xl);
    aspect-ratio:5/3;
    border-radius:var(--border-radius-xl);
    display:flex;
    justify-content:center;
    align-items:center;
}

main section .bottom .placeholder{
    display:flex;
    flex-direction:column;
    align-items:center;
    opacity:0.6;
    gap:var(--gutter-md);
}

main section .bottom .placeholder i {
    font-size:8rem;
}

main section .bottom .placeholder p {
    font-size:var(--font-size-lg);
}

main section .right{
    display:flex;
    flex-direction:column;
    gap:var(--gutter-lg);
    border-radius:var(--border-radius-xl);
}

main section .right .filters{
    display:flex;
    flex-direction:column;
    gap:var(--gutter-md);
}

main section .right .filter input{
    width:100%;
    outline:none;
    margin-top:var(--margin-sm);
    appearance:none;
}

main section .right .filter input::-webkit-slider-runnable-track{
    background-color:var(--bg-active-color);
    height:3px;
    border-radius:2px;
}
/* 
main section .right .filter input::-moz-range-track{
    background-color:var(--bg-active-color);
    height:3px;
} */

main section .right .filter input::-webkit-slider-thumb{
    cursor:pointer;
    appearance:none;
    width:20px;
    height:20px;
    border-radius:50%;
    background-color:rgb(30, 22, 48);
    margin-top:-8.5px;

}

canvas{
    /* background-color:rgba(70, 44, 131, 0.808);  */
    max-width:90%;
    max-height:80vh;
    
    /* display:none; */
}

.presets {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.presets .btn {
    padding: 6px 10px;
    border-radius: 14px;
    border: none;
    background: #e7f9f6;
    color: #111;
    font-size: 13px;
    cursor: pointer;
    text-transform: capitalize;
    white-space: nowrap;
}

.presets .btn:hover {
    background: #c8f0ea;
}