:root{--ground:#437290;--card:#fff;--ink:#000b22;--sub:#112b43;--soft:#e0d8d1;--red:#db0000;--yellow:#ffe100;font-family:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",sans-serif;color:var(--ink);background:var(--ground);font-synthesis:none;font-variant-numeric:tabular-nums;--step:3px;-webkit-text-size-adjust:100%}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--ground);color:#fff;line-height:1.6}
button,input,select{font:inherit;color:inherit}
button{min-height:44px;padding:0 12px;border:2px solid var(--sub);background:#fff;color:var(--ink);cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent;border-radius:0}
button:disabled{cursor:default;background:var(--soft);color:var(--sub);border-style:dashed}
button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,canvas:focus-visible{outline:3px solid var(--yellow);outline-offset:2px;box-shadow:0 0 0 2px var(--ink)}
a{color:inherit}
p{margin:0}
.step-corners,.big-button{clip-path:polygon(0 var(--step),var(--step) var(--step),var(--step) 0,calc(100% - var(--step)) 0,calc(100% - var(--step)) var(--step),100% var(--step),100% calc(100% - var(--step)),calc(100% - var(--step)) calc(100% - var(--step)),calc(100% - var(--step)) 100%,var(--step) 100%,var(--step) calc(100% - var(--step)),0 calc(100% - var(--step)))}
/* 初期画面 */
.empty{min-height:100dvh;display:flex;flex-direction:column;padding:max(24px,env(safe-area-inset-top)) max(20px,env(safe-area-inset-right)) max(16px,env(safe-area-inset-bottom)) max(20px,env(safe-area-inset-left))}
.empty-inner{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;text-align:center;padding:16px 0}
#title{margin:0;font-size:clamp(32px,10vw,48px);line-height:1.2;font-weight:500;color:var(--yellow)}
#title canvas{display:block;image-rendering:pixelated;margin:0 auto}
#title.dotted .title-text{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
/* 画像の投入口。枠全体が1つのボタンで、ドラッグの受け口でもある */
.dropzone{flex:1 1 auto;display:flex;width:100%;max-width:480px;min-height:150px;max-height:400px}
.drop-target{--dash:#fff;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:16px;border:0;color:#fff;font-size:20px;font-weight:700;line-height:1.4;background:repeating-linear-gradient(90deg,var(--dash) 0 12px,transparent 12px 20px) 0 0/100% 4px no-repeat,repeating-linear-gradient(90deg,var(--dash) 0 12px,transparent 12px 20px) 0 100%/100% 4px no-repeat,repeating-linear-gradient(0deg,var(--dash) 0 12px,transparent 12px 20px) 0 0/4px 100% no-repeat,repeating-linear-gradient(0deg,var(--dash) 0 12px,transparent 12px 20px) 100% 0/4px 100% no-repeat;background-color:rgba(17,43,67,.28)}
.drop-target:active{background-color:rgba(17,43,67,.5)}
.drop-icon{width:72px;height:72px;flex:none}
.for-mouse{display:none}
.for-mouse small{display:block;font-size:14px;font-weight:400}
@media (hover:hover) and (pointer:fine){.for-touch{display:none}.for-mouse{display:block}.drop-target:hover{background-color:rgba(17,43,67,.42)}}
.dropzone.dragover .drop-target{--dash:var(--yellow);color:var(--yellow);background-color:var(--sub)}
.big-button{width:100%;min-height:56px;border:0;background:#fff;color:var(--ink);font-size:20px;font-weight:700}
.big-button.solid{background:var(--sub);color:#fff;min-height:48px;font-size:17px}
.big-button.solid:disabled{background:var(--soft);color:var(--sub)}
.empty-status{font-size:14px}
.empty-status:empty{display:none}
.credit{align-self:center;display:flex;align-items:center;min-height:44px;padding:0 12px;font-size:14px}
.message{position:fixed;z-index:10;left:8px;right:8px;top:max(8px,env(safe-area-inset-top));margin:0;padding:12px 14px;background:#fff;color:var(--red);border:3px solid var(--red);font-weight:700}
/* 編集画面 */
.editor{min-height:100dvh;display:flex;flex-direction:column}
.topbar{height:48px;flex:none;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:0 max(12px,env(safe-area-inset-right)) 0 max(12px,env(safe-area-inset-left));margin-top:env(safe-area-inset-top)}
.brand{font-size:16px;white-space:nowrap}
.top-actions{display:flex;gap:8px}
.topbar .quiet{background:transparent;color:#fff;border-color:#fff}
.topbar .quiet:disabled{background:transparent;color:#fff;border-color:#fff;border-style:solid;opacity:.45}
.topbar .icon{width:44px;padding:0;font-size:20px;line-height:1}
.preview{flex:1;min-height:0;display:flex;flex-direction:column}
.stage{position:relative;flex:1 1 0;min-height:190px}
.frame{position:absolute;inset:8px 12px;display:grid;place-items:center}
.frame canvas{grid-area:1/1;display:block;image-rendering:pixelated}
.frame #work{image-rendering:auto}
.busy{position:absolute;top:8px;right:12px;padding:2px 8px;background:#fff;color:var(--ink);font-size:13px}
.views{flex:none;display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:8px max(12px,env(safe-area-inset-right)) 12px max(12px,env(safe-area-inset-left))}
.views button{background:transparent;border-color:#fff;color:#fff}
.views button[aria-pressed=true]{background:#fff;color:var(--ink)}
.card{flex:none;background:var(--card);color:var(--ink);padding:0 max(16px,env(safe-area-inset-right)) calc(12px + env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left));display:flex;flex-direction:column;clip-path:polygon(0 var(--step),var(--step) var(--step),var(--step) 0,calc(100% - var(--step)) 0,calc(100% - var(--step)) var(--step),100% var(--step),100% 100%,0 100%)}
.tabs{display:grid;grid-template-columns:repeat(4,1fr);margin:0 -16px;border-bottom:2px solid var(--sub)}
.tabs button{border:0;background:transparent;font-weight:700}
.tabs button[aria-selected=true]{background:var(--sub);color:#fff}
/* タブを切り替えてもプレビューの大きさが変わらないよう高さを固定する */
.panels{height:220px;overflow-y:auto;overscroll-behavior:contain}
.panel{display:none;padding:6px 0}
.panel.on{display:block}
.field{display:grid;grid-template-columns:88px 1fr 34px;column-gap:10px;align-items:center;min-height:48px}
.field-head{display:contents;font-weight:700}
.field-head label{grid-area:1/1;font-size:14px;font-weight:700}
.field-head output{grid-area:1/3;text-align:right;font-weight:700}
.field input[type=range]{grid-area:1/2}
.field .help,.field-foot{grid-column:1/-1}
.field.wide{display:block;padding:4px 0}
.field.wide .field-head{display:flex;justify-content:space-between;align-items:baseline}
.field-foot{display:flex;justify-content:space-between;font-size:13px;color:var(--sub)}
.help{font-size:13px;color:var(--sub)}
input[type=range]{-webkit-appearance:none;appearance:none;display:block;width:100%;height:44px;margin:0;background:transparent;touch-action:pan-y}
input[type=range]::-webkit-slider-runnable-track{height:4px;background:var(--sub)}
input[type=range]::-moz-range-track{height:4px;background:var(--sub)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;margin-top:-11px;background:var(--ink);border:0;border-radius:0}
input[type=range]::-moz-range-thumb{width:26px;height:26px;background:var(--ink);border:0;border-radius:0}
input[type=range]:disabled{opacity:1}
input[type=range]:disabled::-webkit-slider-runnable-track{background:repeating-linear-gradient(90deg,var(--sub) 0 4px,#fff 4px 8px)}
input[type=range]:disabled::-moz-range-track{background:repeating-linear-gradient(90deg,var(--sub) 0 4px,#fff 4px 8px)}
input[type=range]:disabled::-webkit-slider-thumb{background:var(--soft);border:2px solid var(--sub)}
input[type=range]:disabled::-moz-range-thumb{background:var(--soft);border:2px solid var(--sub)}
/* パレット表 */
.pal{display:grid;grid-template-columns:1fr 92px;grid-template-rows:auto 44px 44px;gap:4px 8px}
.pal-corner{display:none}
.pal-head,.pal-head2{font-size:12px;font-weight:700;text-align:center;white-space:nowrap}
.pal-head span{justify-self:center}
.pal-head{display:grid;grid-template-columns:32px repeat(4,1fr);padding:0 2px}
.pal-head span:first-child{grid-column:2}
.pal-head2{grid-column:2}
.pal-head::before{content:"";grid-column:1}
.pal-row{display:grid;grid-template-columns:32px repeat(4,1fr);padding:0;overflow:hidden;background:#fff}
.pal-label{display:flex;align-items:center;justify-content:center;font-weight:700;background:#fff;color:var(--ink);border-right:2px solid var(--sub)}
.pal-cell{background:var(--c,#fff)}
.pal-row[aria-pressed=false] .pal-cell{background:repeating-linear-gradient(135deg,#fff 0 4px,var(--soft) 4px 8px)}
.pal-accents{grid-column:2;grid-row:2/4;display:grid;grid-template-columns:1fr 1fr;gap:4px}
.pal-accent{min-height:92px;padding:0;background:var(--c);font-weight:700;color:#fff}
.pal-accent[data-accent=yellow]{color:var(--ink)}
.pal-accent[aria-pressed=true]{box-shadow:inset 0 0 0 3px #fff,inset 0 0 0 6px var(--sub)}
.count{margin:6px 0 0;display:flex;gap:10px;align-items:center}
.count strong{font-size:20px;flex:none}
.outline{flex:none;font-weight:700}
#accent-field{margin-top:2px}
#accent-note{margin-top:4px}
/* 編集 */
.editor.editing{height:100dvh;overflow:hidden}
.editor.editing .views,.editor.editing #settings,.editor.editing .save-area,.editor.editing #reset{display:none}
/* 編集中だけ画像の上の指を奪う。それ以外は画像の上でスクロールできる */
.editor.editing .stage{touch-action:none;cursor:crosshair;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.editor.editing .frame{inset:0;display:block;overflow:hidden}
.editor.editing #display{position:absolute;left:0;top:0}
.editor.editing .stage.grab{cursor:grab}
.editor.editing .stage.panning{cursor:grabbing}
.zoom{position:absolute;right:max(8px,env(safe-area-inset-right));bottom:8px;display:grid;gap:4px}
.zoom button{width:44px;padding:0;font-size:22px;font-weight:700;line-height:1}
.edit-panel{display:grid;gap:6px;padding:8px 0 0}
.tool-row{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.tool-row button{padding:0 2px;font-weight:700}
.tool-row button[aria-pressed=true]{background:var(--sub);color:#fff}
.edit-colors{display:grid;grid-template-columns:1fr 52px;gap:4px}
.edit-colors.four{grid-template-columns:1fr auto}
.edit-palette{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
.edit-accents{display:grid;gap:4px}
.edit-colors.four .edit-accents{grid-auto-flow:column;grid-auto-columns:44px}
.edit-colors button{min-width:0;padding:0;background:var(--c);color:#fff;font-weight:700}
.edit-colors .on-yellow{color:var(--ink)}
.edit-colors button[aria-pressed=true]{box-shadow:inset 0 0 0 3px #fff,inset 0 0 0 6px var(--sub)}
.edit-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.edit-actions button{padding:0 2px}
/* 細かさの確認 */
.long-guard{margin-top:6px;padding:8px;border:2px solid var(--red);font-size:13px;font-weight:700}
.long-guard-actions{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:6px}
.long-guard-actions button{padding:0 2px;font-weight:700}
/* 保存 */
.save-area{display:grid;grid-template-columns:auto 1fr;gap:6px;padding-top:8px;border-top:2px solid var(--sub)}
.save-area .outline{padding:0 8px;font-size:15px;white-space:nowrap}
.save-area .save{padding:0 4px;font-size:15px;line-height:1.25}
.scale{display:grid;grid-template-columns:88px 1fr;column-gap:10px;align-items:center;margin-top:6px;font-size:14px;font-weight:700}
.scale select{width:100%;min-height:44px;padding:0 8px;border:2px solid var(--sub);background:#fff;color:var(--ink);border-radius:0;font-weight:400}
/* 背の低い端末はプレビューを優先し、設定だけをカード内でスクロールする */
@media (max-height:740px){.panels{height:196px}}
@media (max-height:620px){.panels{height:150px}}
@media (min-width:900px),(orientation:landscape) and (min-width:560px) and (max-height:560px){
.editor{display:grid;grid-template-columns:1fr 360px;grid-template-rows:auto 1fr;height:100dvh;min-height:320px}
.topbar{grid-column:1;grid-row:1}
.preview{grid-column:1;grid-row:2}
.card{grid-column:2;grid-row:1/3;overflow-y:auto;padding-top:12px}
.tabs{display:none}
.panels{height:auto;overflow:visible}
.panel{display:block;padding:8px 0 12px;border-bottom:2px solid var(--soft)}
#settings{flex:none}
.save-area{position:sticky;bottom:0;margin-top:auto;padding-bottom:4px;background:var(--card);border-top:2px solid var(--sub)}
.stage{min-height:0}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}