:root{--navy:#0b1f3a;--navy2:#1d3b66;--blue:#2a6fdb;--bg:#f5f5f7;--card:#fff;--line:#e3e5ea;--tx:#1d1d1f;--mute:#6e6e73;--r:20px;
--sat:env(safe-area-inset-top,0px);--sab:env(safe-area-inset-bottom,0px);--sal:env(safe-area-inset-left,0px);--sar:env(safe-area-inset-right,0px);--top:60px;--fil:56px}
@media(prefers-color-scheme:dark){:root{--bg:#0a1220;--card:#121c30;--line:#24324d;--tx:#f2f4f8;--mute:#9aa6bb}}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0}
body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",system-ui,sans-serif;background:var(--bg);color:var(--tx);line-height:1.6;overflow:hidden;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,p{margin:0}

.top{position:fixed;inset:0 0 auto 0;z-index:900;height:calc(var(--top) + var(--sat));padding:var(--sat) calc(20px + var(--sar)) 0 calc(20px + var(--sal));display:flex;align-items:center;gap:20px;background:var(--navy);color:#fff}
.brand h1{font-size:17px;font-weight:600;letter-spacing:.02em;line-height:1.2}
.brand p{font-size:11px;color:#a9b8d0;line-height:1.3}
.tabs{display:none;margin:0 auto;background:rgba(255,255,255,.1);border-radius:999px;padding:3px}
.tabs button{border:0;background:none;color:#cfd9ea;padding:6px 18px;border-radius:999px;cursor:pointer;font-size:14px}
.tabs button.on{background:#fff;color:var(--navy)}
.actions{margin-left:auto;display:flex;gap:8px}

.btn{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:8px 16px;font-size:14px;cursor:pointer;min-height:38px;text-align:center}
.btn:active{opacity:.7}
.top .btn{background:rgba(255,255,255,.12);border-color:transparent;color:#fff}
.top .btn.primary{background:#fff;color:var(--navy)}
.btn.primary{background:var(--navy);color:#fff;border-color:var(--navy)}
.btn.danger{color:#c0362c}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}

.filters{position:fixed;z-index:850;top:calc(var(--top) + var(--sat));left:0;right:0;height:var(--fil);display:flex;gap:8px;align-items:center;padding:0 calc(20px + var(--sar)) 0 calc(20px + var(--sal));background:var(--card);border-bottom:1px solid var(--line);overflow-x:auto}
.filters input,.filters select{height:36px;border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:0 14px;font-size:16px;flex:0 0 auto}
.filters input{width:240px}

main{position:fixed;inset:calc(var(--top) + var(--fil) + var(--sat)) 0 0 0}
.view{position:absolute;inset:0;display:none}
.view.on{display:block}
#map{height:100%;background:#dfe6ef}
#view-timeline{overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:calc(90px + var(--sab))}

.tabbar{position:fixed;z-index:900;left:0;right:0;bottom:0;display:flex;padding:6px 16px calc(6px + var(--sab));background:color-mix(in srgb,var(--card) 88%,transparent);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid var(--line)}
.tabbar button{flex:1;border:0;background:none;padding:10px;font-size:15px;color:var(--mute);border-radius:12px}
.tabbar button.on{color:var(--navy);font-weight:600}
@media(prefers-color-scheme:dark){.tabbar button.on{color:#fff}}

/* map */
.pin{display:block;width:22px;height:22px;border-radius:50%;background:var(--navy);border:3px solid #fff;box-shadow:0 2px 8px rgba(0,0,0,.35);transition:transform .2s}
.pin.sel{transform:scale(1.5);background:var(--blue)}
.leaflet-popup-content-wrapper{border-radius:16px;padding:0;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.2)}
.leaflet-popup-content{margin:0;width:230px!important;font-family:inherit}
.pop{padding:0 0 12px}
.pop .ph{aspect-ratio:16/10;border-radius:0}
.pop h3{font-size:16px;margin:10px 14px 0}
.pop p{font-size:12px;color:var(--mute);margin:0 14px}
.pop button{margin:10px 14px 0;width:calc(100% - 28px)}

/* photo */
.ph{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--navy2),#6f89b3);border-radius:14px}
.ph::before{content:attr(data-i);position:absolute;inset:0;display:grid;place-items:center;font-size:42px;font-weight:200;color:rgba(255,255,255,.55)}
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* timeline */
#timeline{max-width:880px;margin:0 auto;padding:28px calc(20px + var(--sar)) 0 calc(20px + var(--sal))}
.yr h2{font-size:44px;font-weight:700;letter-spacing:-.02em;margin:36px 0 4px}
.mo h3{font-size:14px;color:var(--mute);font-weight:500;margin:18px 0 10px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.card{all:unset;box-sizing:border-box;cursor:pointer;background:var(--card);border-radius:var(--r);overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.06);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(0,0,0,.12)}
.card:focus-visible{outline:2px solid var(--blue)}
.card .ph{aspect-ratio:4/3;border-radius:0}
.card .tx{padding:14px 16px 16px}
.card b{display:block;font-size:17px;font-weight:600;line-height:1.35}
.card span{font-size:13px;color:var(--mute)}
.empty{text-align:center;color:var(--mute);padding:80px 20px}

/* sheet */
.sheet{position:fixed;z-index:1000;background:var(--card);overflow-y:auto;-webkit-overflow-scrolling:touch;transition:transform .35s cubic-bezier(.2,.8,.2,1);
left:0;right:0;bottom:0;max-height:88dvh;border-radius:24px 24px 0 0;transform:translateY(105%);box-shadow:0 -10px 40px rgba(0,0,0,.25);padding-bottom:calc(24px + var(--sab))}
.sheet.open{transform:none}
.sheet .grip{width:40px;height:5px;border-radius:3px;background:var(--line);margin:10px auto 0}
.gallery{display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;padding:14px 20px 0;-webkit-overflow-scrolling:touch}
.gallery .ph{flex:0 0 86%;aspect-ratio:4/3;scroll-snap-align:center;border-radius:18px}
.sbody{padding:18px 24px 0}
.sbody h2{font-size:26px;line-height:1.25;letter-spacing:-.01em}
.sbody .meta{color:var(--mute);font-size:14px;margin-top:4px}
.sbody h4{margin:24px 0 6px;font-size:13px;color:var(--mute);font-weight:500}
.sbody .imp{white-space:pre-wrap;font-size:16px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips li{list-style:none;background:var(--bg);padding:5px 14px;border-radius:999px;font-size:14px}
.chips{padding:0;margin:0}
.sbody .coord{font-size:13px;color:var(--mute);font-variant-numeric:tabular-nums}
.sbtns{display:flex;gap:8px;margin-top:22px}
.sbtns .btn{flex:1}
.xbtn{position:absolute;top:10px;right:14px;width:34px;height:34px;border-radius:50%;border:0;background:rgba(0,0,0,.45);color:#fff;font-size:18px;z-index:2;cursor:pointer;position:sticky;float:right;margin:8px 14px -42px 0}

@media(min-width:760px){
 .tabs{display:flex}.tabbar{display:none}
 #view-timeline{padding-bottom:40px}
 .sheet{top:calc(var(--top) + var(--fil) + var(--sat) + 12px);bottom:12px;left:auto;right:12px;width:420px;max-height:none;border-radius:24px;transform:translateX(120%);padding-bottom:24px}
 .sheet .grip{display:none}
 .gallery .ph{flex-basis:92%}
}
@media(max-width:759px){.filters input{width:200px}.actions .btn{padding:8px 12px}.yr h2{font-size:36px}.brand p{display:none}.top{gap:10px}}

/* dialogs */
dialog{border:0;border-radius:24px;padding:24px;width:min(480px,92vw);max-height:90dvh;background:var(--card);color:var(--tx);box-shadow:0 20px 60px rgba(0,0,0,.35)}
dialog::backdrop{background:rgba(5,12,25,.55);backdrop-filter:blur(4px)}
dialog h2{font-size:22px;margin-bottom:14px}
dialog label{display:block;font-size:13px;color:var(--mute);margin-top:12px}
dialog input:not([type=file]),dialog textarea{display:block;width:100%;margin-top:4px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--bg);font-size:16px}
dialog input[type=file]{display:block;margin-top:6px;font-size:14px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.foot{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}
#btnPick{margin-top:12px;width:100%}
.stack{display:grid;gap:10px}.note{font-size:13px;color:var(--mute);margin-bottom:14px}
.filebtn{display:block;line-height:1.9}
.toast{position:fixed;z-index:2000;left:50%;bottom:calc(90px + var(--sab));transform:translate(-50%,20px);background:var(--navy);color:#fff;padding:10px 20px;border-radius:999px;font-size:14px;opacity:0;pointer-events:none;transition:.3s;max-width:90vw;text-align:center}
.toast.on{opacity:1;transform:translate(-50%,0)}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}