/****  COMMON CSS SETTINGS FOR ALL DEVICES ***/

/* GLOBAL PAGE SETTINGS */
* {margin: 0; padding: 0; box-sizing: border-box;}
:root { 
    --button-1: 10em; --button-2: 15em;--button-3: 20em;--button-4: 25em;
    --fs-1: 1rem; --fs-2: 2rem; --fs-3: 3rem; --fs-4: 4rem;
    --height-1: 2dvh; --height-2: 4dvh; -height-3: 6dvh; --height-4: 8dvh;
    --margin-1: 1dvw; --margin-2: 2dvw; --margin-3: 6dvw; --margin-4: 8dvw;
    --padding-1: 2dvw; --padding-2: 4dvw; --padding-3: 6dvw; --padding-4: 8dvw;
    --width-1: 2dvw; --width-2: 4dvw; --width-3: 6dvw; --width-4: 8dvw;--width-5: 10dvw;--width-6: 12dvw;
    --s: .5dvw; --c:darkgrey 70% 35%; --d: blue;
    --main-color: red; --secondary-color: lightgreen;  --txt-color: aliceblue; 
    --img-bg-color: rgba(240, 240, 240, 0.9);
}
body {font-family: system-ui, apple-system, sans-serif; color:#333; margin: 0; padding: 0; box-sizing: border-box; overscroll-behavior-y: contain; }   
   
/* container general settings */
#container{position: relative; box-sizing: border-box; display: grid; grid-template-columns: repeat(auto-fit, minmax(auto-fill, 1fr)); grid-auto-rows: minmax(3dvh, auto); grid-auto-flow: column; max-width: 200rem; width: 100%; height: auto; margin-inline: auto ; overflow: auto; will-change: scroll-position; outline: 1dvw solid lightgreen; } 
#container{container-type: inline-size; container-name: parent;}

/* grid settings*/
#heading{grid-column: 1/5; grid-row:1/2;}
.instuctions{grid-column: 1/5; grid-row:2/3;}
.lw-container{grid-column:1/5; grid-row: 4/5;}
footer{grid-column: 1/5;grid-row: 5/6;}

/*** HEADING settings ***/
#heading{display: grid; grid-template-columns: 14% 85%; max-width: 200rem; width: 100%; height: 18dvh;}
#heading{--s: 1dvw; --c: lightgrey; --_s: calc(2*var(--s)) calc(2*var(--s)); --_g: 35.36% 35.36% at; --_c: #0000 66%,black 40% 70%, #0000 72%; background: radial-gradient(var(--_g) 100% 25%,var(--_c)) var(--s) var(--s)/var(--_s), radial-gradient(var(--_g) 0 75%,var(--_c)) var(--s) var(--s)/var(--_s),  radial-gradient(var(--_g) 100% 25%,var(--_c)) 0 0/var(--_s), radial-gradient(var(--_g) 0 75%,var(--_c)) 0 0/var(--_s), repeating-conic-gradient(var(--c) 0 25%,#0000 0 50%) 0 0/var(--_s), radial-gradient(var(--_c)) 0 calc(var(--s)/2)/var(--s) var(--s) var(--c); }
/* formatting language */
#language {position: fixed; max-width: 5%; width: 100%; height: 7dvh; display: flex; flex-flow: column nowrap; z-index: 1111;}
#language input{font-size: var(--fs-1); color: white; background-color: black; border: 0.1dvw solid black; line-height: 1;  padding-left: calc(var(--padding-1)*0.6); margin-block:0.3dvw;cursor: pointer; border-radius: 2dvw; }
#language input[class="chinese"]:not(h1){font-size: var(--fs-1);line-height: 1.5; letter-spacing: 0.01dvw; font-family: 松本，微软雅黑, Helvetica, sans-serif; }
/* navigation section formatting*/
#menu button{position: fixed; max-width: 6%; width: 100%; height: 2dvw; background:skyblue; opacity:1; color:white; box-shadow:inset 0 0 0 1px black; border:0.3dvw solid white; display: flex; justify-content: center; align-items: center; border-radius: 1dvw;}
#menu button{font-size: var(--fs-2); }
#menu button:hover{background:grey; color:aliceblue; box-shadow:inset 0 0 0 1px white; border:0.4dvw solid black; cursor: pointer;}  
/* formatting header */
header{padding-left: 1dvw; max-width: 200rem;  width: 100%;}
header h1{position: absolute; display: flex; flex-flow: row nowrap; justify-content: center; align-items: center; margin-inline: 20%;  margin-block: 5%; color: blue; font-size: var(--fs-4); text-align: center;  animation: infinite linear 30s styling; z-index: 99}
@keyframes styling{
    0%{ translate: 0dvw 0dvw  1dvw; color: black; } 
    25%{ translate: -4dvw -1dvw 2dvw; color:blue; }
    50%{ translate: 0dvw 0dvw 3dvw; color: red;} 
    75%{ translate: 4dvw 1dvw 2dvw; color: navy; }
    100%{ translate: 0dvw 0dvw 1dvw; color: black;} 
} 

/* formatting INSTRUCTION sextion */
.instructions p{color: black; margin-block: 0.5dvw; font-size: var(--fs-2); margin-left:5%; height: 2%; max-width: 200rem; width: 100%; } 

/* formatting the LW-CONTAINER main section*/
.lw-container{position: relative; width: 100%; max-height: 300dvh; height: 100%;}
.continent{position: relative; display: grid; grid-template-columns: repeat(6, 1fr); grid-auto-rows: minmax(8dvh, auto); column-gap: 1dvw; margin-bottom: 6dvh; }
.region{display: block; max-width: 8dvw; width: 100%; max-height: 10dvh; height: 100%; border: 0.1dvw solid burlywood; border-radius: 1dvw; box-shadow: -0.4dvw 0.3dvw 0.1dvw 0.4dvw skyblue; margin-block: auto; margin-inline: auto;}
.region p{font-size: var(--fs-3); padding-inline: 20%; padding-block: 10%}
.nation{display: block; max-width: 12dvw; width: 100%; max-height: 30dvh; height: 100%;}
.nation p{display: flex; color: darkblue; z-index:10; font-size: var(--fs-2); font-weight: 500;cursor: none; width: 100% ; border: 0.1dvw solid blue; justify-content: center;border-radius: 2dvw; background-color: beige;}
img{position: relative; max-width: 12dvw; width: 100%; max-height: 25dvh; height: 100%;}
.ref > img{display:block; transition: all 2s ease;} 
.ref > img:hover{display: block; cursor: pointer; transform: scale(1.2) translateY(0.7dvw); box-shadow: 0.5dvw 0.5dvw 2dvw 0.2dvw violet; border-radius: 4dvw;}  

/* format the WATERMARKING */
/* .gallery-item { position: relative;  display: float;} 
.gallery-item::after{ content: '© L. Witters';  position: absolute;  top: 11%; left: 16%; transform: translate(-50%, -50%); font-size: var(--fs-1); color: aqua; opacity: 0.8; pointer-events: none; } */
/*.lw-image::after{ content: '© L. Witters';  position: absolute;  top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: var(--fs-1); color: white; opacity: 0.8; pointer-events: none; } */


/** SETTINGS FOR OTHER DEVICES AND OTHER SIZES**/


/*max-width: 107rem = 1,712px */
@media only screen and (96rem <= width <= 107rem){
   #language, #menu button{max-width: 9%;}
   #menu button{height: 5%;}
   .lw-container{position: relative; width: 100%; max-height: 450dvh; height: 100%;}
   .continent{grid-template-columns: repeat(4, 1fr); }
   .region{display: block; max-width: 8dvw; width: 100%; max-height: 15dvh; height: 100%;margin-bottom: 1dvh; } 
   .nation{display: block; max-width: 20dvw; width: 100%; max-height: 25dvh; height: 100%; margin-bottom: 1dvh;}
   img{position: relative; max-width: 20dvw; width: 100%; max-height: 20dvh; height: 100%;}
}    

/*max-width: 96rem = 1,528px */
@media only screen and (85rem <= width <= 96rem){
   #language, #menu button{max-width: 10dvw;}
   #language input{font-size: calc(var(--fs-1)*1);}
   #menu button{height: 6dvh;font-size: calc(var(--fs-1)*1.5);}
   #heading header h1{font-size: calc(var(--fs-3)*1.5); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.5);margin-top: 2%;}
   .region, .nation{max-width: 90%;}
   .nation a img{max-width:90%;}
   .region p{font-size:calc(var(--fs-2)*1.3);}
   .nation p{max-width: 90%; font-size:calc(var(--fs-1)*1.1);}
}
@container parent (85rem <= width <= 96rem){
   #heading{width: 95rem; height: 9rem; margin-inline: 0dvw;}
   .instructions{width: 95rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container .continent{grid-template-columns: repeat(4, 1fr); gap: 0.1dvw;}
   
}

/* max-width: 85rem = 1,360px */
@media screen and (75rem <= width <= 85rem) {
   #language, #menu button{max-width: 10dvw;}
   #language input{font-size: calc(var(--fs-1)*1);}
   #menu button{height: 6dvh;font-size: calc(var(--fs-1)*1.5);}
   #heading header h1{font-size: calc(var(--fs-3)*1.5); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.5);margin-top: 2%;}
   .lw-container .continent{grid-template-columns: repeat(4, 1fr); gap: 0.2dvw;}
   .region, .nation{max-width: 90%;}
   .nation a img{max-width:95%;}
   .region p{font-size:calc(var(--fs-2)*1.3);}
   .nation p{max-width: 95%; font-size:calc(var(--fs-1)*1.1);}
} 

@container parent (75rem <= width <= 85rem){
   #heading{width: 85rem; height: 9rem; margin-inline: 0dvw;}
   .instructions{width: 85rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container{width: 83rem; height: auto; margin-inline: 2dvw;}
}

/* max-width: 75rem = 1,200px */
@media screen and (65rem <= width <= 75rem) {
   #language, #menu button{max-width: 10dvw;}
   #language input{font-size: calc(var(--fs-1)*1);}
   #menu button{height: 6dvh;font-size: calc(var(--fs-1)*1.5);}
   #heading header h1{font-size: calc(var(--fs-3)*1.5); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.5);margin-top: 2%;}
   .lw-container .continent{grid-template-columns: repeat(4, 1fr); gap: 0.2dvw;}
   .region{max-width: 90%; max-height: 50%;}
   .nation{max-width: 90%; max-height: 100%;}
   .nation a img{max-width:95%; max-height: 100%; height: 30dvh;}
   .region p{font-size:calc(var(--fs-2)*1.3);}
   .nation p{max-width: 95%; font-size:calc(var(--fs-1)*1.1);}
}

@container parent (65rem <= width <= 75rem){
   #heading{width: 75rem; height: 9rem; margin-inline: 0dvw;}
   .instructions{width: 75rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container{width: 73rem; height: auto; margin-inline: 2dvw;}
}

 /* max-width : 65rem  = 1,040px */
 @media screen and (55rem <= width <= 65rem) {   
   #language, #menu button{max-width: 10dvw;}
   #language input{font-size: calc(var(--fs-1)*1);}
   #menu button{height: 6dvh;font-size: calc(var(--fs-1)*1.5);}
   #heading header h1{font-size: calc(var(--fs-3)*1.5); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.5);margin-top: 2%;}
   .lw-container .continent{grid-template-columns: repeat(4, 1fr); gap: 0.2dvw;}
   .region{max-width: 90%; max-height: 50%;}
   .nation{max-width: 90%; max-height: 100%;}
   .nation a img{max-width:95%; max-height: 100%; height: 30dvh;}
   .region p{font-size:calc(var(--fs-2)*1.3);}
   .nation p{max-width: 95%; font-size:calc(var(--fs-1)*1.1);}
}

@container parent (55rem <= width <= 65rem){
   #heading{width: 65rem; height: 9rem; margin-inline: 0dvw;}
   .instructions{width: 65rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container{width: 63rem; height: auto; margin-inline: 2dvw;}
}
 
/* max-width: 55rem =  880px */
 @media screen and (45rem <= width <= 55rem){
   #language, #menu button{max-width: 12dvw;}
   #language input{font-size: calc(var(--fs-1)*0.9);}
   #menu button{height: 6dvh;font-size: calc(var(--fs-1)*1.3);}
   #heading header h1{font-size: calc(var(--fs-3)*1); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.2);margin-top: 2%;}
   .lw-container .continent{grid-template-columns: repeat(4, 1fr); gap: 0.2dvw;}
   .region{max-width: 90%; max-height: 50%;}
   .nation{max-width: 90%; max-height: 100%;}
   .nation a img{max-width:95%; max-height: 100%; height: 25dvh;}
   .region p{font-size:calc(var(--fs-2)*1.3);}
   .nation p{max-width: 95%; font-size:calc(var(--fs-1)*1.1);}
 }

@container parent (45rem <= width <= 55rem){
   #heading{width:55rem; height: 9rem; margin-inline: 0dvw;}
   .instructions{width: 55rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container{width: 53rem; height: auto; margin-inline: 2dvw;}
  
}

/* max-width: 45rem =  720px */
 @media screen and (35rem <= width <= 45rem){
   #language, #menu button{max-width: 13dvw;}
   #language input{font-size: calc(var(--fs-1)*0.8);}
   #menu button{height: 5dvh;font-size: calc(var(--fs-1)*1.1);}
   #heading header h1{font-size: calc(var(--fs-2)*1.4); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.2);margin-top: 2%;}
   .lw-container .continent{grid-template-columns: repeat(3, 1fr); gap: 0.2dvw;}
   .region{max-width: 90%; max-height: 50%;}
   .nation{max-width: 90%; max-height: 100%;}
   .nation a img{max-width:95%; max-height: 100%; height: 25dvh;}
   .region p{font-size:calc(var(--fs-2)*1.3);}
   .nation p{max-width: 95%; font-size:calc(var(--fs-1)*1.1);}
 }

@container parent (35rem <= width <= 45rem){
   #heading{width:45rem; height: 9rem; margin-inline: 0dvw;}
   .instructions{width: 45rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container{width: 43rem; height: auto; margin-inline: 2dvw;}
}

/* max-width: 35rem =  560px */
 @media screen and (25rem <= width <= 35rem){
   #language, #menu button{max-width: 15dvw;}
   #language input{font-size: calc(var(--fs-1)*0.8);}
   #menu button{height: 5dvh;font-size: calc(var(--fs-1)*1);}
   #heading header h1{font-size: calc(var(--fs-3)*1); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.2);margin-top: 2%;}
   .lw-container .continent{grid-template-columns: repeat(3, 1fr); gap: 0.2dvw;}
   .region{max-width: 90%; max-height: 50%;}
   .nation{max-width: 90%; max-height: 100%;}
   .nation a img{max-width:95%; max-height: 100%; height: 25dvh;}
   .region p{font-size:calc(var(--fs-2)*1.1);}
   .nation p{max-width: 90%; font-size:calc(var(--fs-1)*1);}
 }

@container parent (25rem <= width <= 35rem){
    #heading{width:35rem; height: 7rem; margin-inline: 0dvw;}
   .instructions{width: 35rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container{width: 33rem; height: auto; margin-inline: 2dvw;}
}
 
/* max-width: 25rem =  400px */
 @media screen and (20rem <= width <= 25rem){
   #language, #menu button{max-width: 12dvw;}
   #language input{font-size: calc(var(--fs-1)*0.9);}
   #menu button{height: 6dvh;font-size: calc(var(--fs-1)*1.3);}
   #heading header h1{font-size: calc(var(--fs-3)*1); margin-top: 2%;}
   .instructions p{width: auto; font-size:calc(var(--fs-1)*1.2);margin-top: 2%;}
   .lw-container .continent{grid-template-columns: repeat(4, 1fr); gap: 0.2dvw;}
   .region{max-width: 90%; max-height: 50%;}
   .nation{max-width: 90%; max-height: 100%;}
   .nation a img{max-width:95%; max-height: 100%; height: 25dvh;}
   .region p{font-size:calc(var(--fs-2)*1.3);}
   .nation p{max-width: 95%; font-size:calc(var(--fs-1)*1.1);}
 }

@container parent (20rem <= width <= 25rem){
    #heading{width: 25rem; height: 9rem; margin-inline: 0dvw;}
   .instructions{width: 25rem; height: 5rem; margin-inline: 2dvw;}
   .lw-container{width: 25rem; height: auto; margin-inline: 2dvw;}
}