:root{--ink:#1b2841;--brand:#313f76;--brand-deep:#222d56;--soft:#f4f6fa;--line:#e5e8ef;--green:#4c6b5c;--muted:#798195;--white:#fff;--shadow:0 12px 36px rgba(29,43,68,.08)}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:system-ui,-apple-system,"Noto Sans KR",Arial,sans-serif;color:var(--ink);background:#f8f9fc;min-height:100vh}button,input,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.35;cursor:default}[hidden]{display:none!important}.topbar{height:67px;position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);padding:0 max(18px,env(safe-area-inset-left));box-shadow:0 1px 6px #17243d06}.brand{display:flex;align-items:center;gap:10px;color:var(--brand)}.brand-icon{display:grid;place-items:center;background:var(--brand);color:#fff;width:37px;height:37px;border-radius:11px;font-size:25px;font-weight:300}.brand span:last-child{display:flex;flex-direction:column;line-height:1.03;letter-spacing:2px}.brand strong{font-size:18px;letter-spacing:1.2px}.brand small{font-size:9px;margin-top:3px;letter-spacing:4px}.header-right{display:flex;align-items:center;gap:8px}.connection{font-size:11px;color:var(--muted);background:#eef1f5;border-radius:30px;padding:7px 10px}.connection.online{color:var(--green);background:#e9f3ec}.icon-button{width:38px;height:38px;background:white;border:1px solid var(--line);border-radius:10px;color:var(--brand);font-size:21px}main{max-width:1200px;margin:auto;padding:24px 16px 40px}.intro{margin-bottom:20px;display:flex;justify-content:space-between}.eyebrow{font-size:10px;letter-spacing:3px;color:var(--green);font-weight:800}.intro h1{font-size:29px;line-height:1.2;margin:7px 0 8px;letter-spacing:-1.5px}.intro p{margin:0;color:var(--muted);font-size:13px}.card{background:#fff;border:1px solid var(--line);border-radius:17px;box-shadow:var(--shadow)}.setup{padding:22px;max-width:740px;margin:0 auto 24px}.setup h2{font-size:19px;margin:0 0 8px}.muted{color:var(--muted);font-size:13px;line-height:1.65;margin:0 0 19px}.setup label{display:block;font-size:12px;font-weight:800;margin:16px 0 8px}.setup input{width:100%;border:1px solid #dce1e9;padding:13px 12px;border-radius:10px;outline:0;background:#fafbfe;font-size:14px;color:var(--ink)}.setup input:focus,.search-box:focus-within{outline:2px solid #cbd5fc;border-color:var(--brand)}.helper{font-size:11px;line-height:1.6;margin-top:8px;color:var(--muted)}.helper code{font-size:11px}.redirect-info{font-size:11px;background:#f7f8fb;padding:11px;border-radius:10px;color:var(--brand);overflow-wrap:anywhere}.buttonrow{display:flex;gap:10px;margin-top:14px}.primary{background:var(--brand);border:1px solid var(--brand);border-radius:10px;color:white;padding:13px 17px;font-size:13px;font-weight:800}.outline{background:white;color:var(--brand);border:1px solid #cbd3e5;border-radius:10px;padding:13px 17px;font-size:13px;font-weight:800}.error{color:#b13e3e;font-size:12px;white-space:pre-wrap;line-height:1.55}.search-panel{padding:15px;margin-bottom:24px}.search-title{display:flex;align-items:center;justify-content:space-between;font-weight:800;font-size:13px;padding:0 3px 13px}.text-button{border:0;background:none;color:var(--brand);font-size:12px;font-weight:800}.search-box{display:flex;align-items:center;border:1px solid #dce1ed;background:#f8f9fc;border-radius:12px;overflow:hidden}.search-box input{border:0;background:none;outline:0;min-width:0;flex:1;padding:13px 7px;font-size:15px}.magnify{font-size:25px;color:var(--muted);width:40px;text-align:center}.search-box button{border:0;background:none;font-size:22px;color:var(--muted);padding:8px 14px}.tabs{margin-top:15px;display:flex;gap:8px}.tabs button{border:1px solid var(--line);background:#f7f8fa;color:#697187;border-radius:30px;padding:9px 15px;font-size:12px;font-weight:800}.tabs button.active{color:var(--brand);background:#edf0fb;border-color:#d8def1}.result-head{display:flex;align-items:center;justify-content:space-between;margin:0 1px 15px;gap:12px}.result-head strong{font-size:18px}.result-head p{font-size:12px;margin:5px 0 0;color:var(--muted)}.result-head select{font-size:12px;color:var(--ink);border:1px solid var(--line);border-radius:9px;background:#fff;padding:10px 9px}.photo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.photo-grid.size-small{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px}.photo-grid.size-large{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.photo-card{border:1px solid var(--line);background:#fff;border-radius:12px;padding:5px;min-width:0;text-align:left;overflow:hidden;box-shadow:0 3px 8px #17243d08}.photo-card .image-shell{display:flex;align-items:center;justify-content:center;background:#f0f1f3;border-radius:9px;aspect-ratio:1/1;overflow:hidden}.photo-card img{display:block;width:100%;height:100%;object-fit:contain}.photo-card .filename{font-size:11px;line-height:1.45;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:7px 2px 3px;color:#26324d;font-weight:700}.photo-grid.size-small .filename{font-size:10px}.photo-grid.size-large .filename{font-size:12px}.skeleton{width:50%;height:45%;background:linear-gradient(100deg,#e4e6eb,#f5f6f9,#e4e6eb);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:8px}.broken{font-size:11px;text-align:center;color:var(--muted);padding:5px}.pagination{display:flex;align-items:center;justify-content:center;gap:22px;margin:25px 0 10px}.page-button{background:white;border:1px solid var(--line);border-radius:9px;padding:11px 15px;color:var(--brand);font-size:13px;font-weight:800}#pageNumber{font-size:13px;font-variant-numeric:tabular-nums}.empty,.loading-card{padding:55px 20px;text-align:center;color:var(--muted);background:#fff;border:1px dashed #d7dce5;border-radius:15px;font-size:13px}.loading-card{display:flex;flex-direction:column;align-items:center;gap:10px}.spinner{width:28px;height:28px;border:3px solid #e6eaf6;border-top-color:var(--brand);border-radius:50%;animation:spin 1s linear infinite}.loading-card strong{color:var(--ink)}.welcome{padding:45px 20px;text-align:center;max-width:740px;margin:0 auto}.welcome h2{font-size:22px;line-height:1.4}.welcome p{color:var(--muted);font-size:13px;line-height:1.6}.hero-mark{font-size:55px;color:var(--brand)}.wide{margin-top:15px;min-width:180px}.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(20px);background:#263553;color:#fff;border-radius:12px;padding:12px 16px;z-index:30;max-width:90vw;font-size:12px;box-shadow:0 6px 30px #0003;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.viewer{position:fixed;inset:0;z-index:40;background:#101623;display:flex;flex-direction:column;color:#fff}.viewer-bar{padding:calc(12px + env(safe-area-inset-top)) 16px 12px;display:flex;align-items:center;justify-content:space-between;background:#171f2c;gap:16px}.viewer-bar span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px;font-weight:750}.viewer button{border:0;color:white;background:#ffffff25;border-radius:11px;padding:8px 14px;font-size:19px}.viewer-stage{flex:1;position:relative;overflow:hidden;touch-action:none;display:flex;align-items:center;justify-content:center}.viewer-stage img{max-height:100%;max-width:100%;width:auto;height:auto;object-fit:contain;transform-origin:center;user-select:none;-webkit-user-drag:none;will-change:transform}.viewer-loading{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:#0008;padding:12px 15px;border-radius:10px;font-size:12px}.viewer-actions{display:flex;align-items:center;justify-content:space-evenly;gap:6px;padding:13px 8px calc(13px + env(safe-area-inset-bottom));background:#171f2c}.viewer-actions button{min-width:45px}#zoomReset{font-size:12px;min-width:62px}footer{padding:20px;max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;color:#adb2bd;font-size:10px;letter-spacing:1px}@keyframes spin{to{transform:rotate(360deg)}}@keyframes shimmer{100%{background-position-x:-200%}}@media(min-width:660px){main{padding:35px 26px 50px}.photo-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:15px}.photo-grid.size-small{grid-template-columns:repeat(8,minmax(0,1fr))}.photo-grid.size-large{grid-template-columns:repeat(4,minmax(0,1fr))}.photo-card{padding:7px}.search-panel{padding:20px}.intro h1{font-size:35px}}@media(min-width:1000px){.photo-grid{grid-template-columns:repeat(7,minmax(0,1fr))}.photo-grid.size-small{grid-template-columns:repeat(10,minmax(0,1fr))}.photo-grid.size-large{grid-template-columns:repeat(5,minmax(0,1fr))}}

/* OneDrive read-only folder explorer; small-screen friendly. */
.browse-button{margin-top:12px;width:100%;padding:11px}
.folder-picker{position:fixed;inset:0;z-index:50;background:rgba(14,22,39,.58);display:flex;align-items:center;justify-content:center;padding:14px}
.picker-panel{background:#fff;border-radius:16px;box-shadow:0 18px 65px #0b142a45;width:min(620px,100%);max-height:min(90vh,850px);display:flex;flex-direction:column;overflow:hidden;padding:20px}
.picker-top{display:flex;justify-content:space-between;align-items:start;gap:10px}
.picker-top h2{font-size:20px;margin:0 0 7px}
.picker-top p{font-size:12px;color:var(--muted);margin:0 0 13px;line-height:1.5}
.picker-x{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 11px}
.picker-location{font-size:12px;font-weight:750;line-height:1.5;overflow-wrap:anywhere;background:var(--soft);padding:11px;border-radius:8px;margin-bottom:11px}
.picker-actions{display:flex;gap:10px;margin-bottom:11px}
.picker-actions>button{flex:1;padding:10px}
.picker-list{flex:1;min-height:160px;max-height:55vh;overflow-y:auto;border:1px solid var(--line);border-radius:9px;padding:8px;color:var(--muted);font-size:13px}
.picker-folder{width:100%;display:flex;align-items:center;text-align:left;gap:10px;padding:13px 10px;border:0;border-bottom:1px solid #f1f2f6;background:#fff;color:var(--ink);min-height:47px}
.picker-folder:hover,.picker-folder:focus{background:#f3f5fa}
.picker-folder span:first-child{color:var(--brand)}
.picker-folder-note{margin-left:auto;font-size:10px;color:var(--muted)}
.picker-tip{font-size:11px;color:var(--muted);line-height:1.5;margin:11px 0 0}
@media(max-width:560px){.picker-panel{padding:14px}.picker-top h2{font-size:17px}.picker-list{max-height:50vh}}

/* V1.4: personal-device sign-in persistence UI */
.logout-button{padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:white;color:var(--muted);font-size:11px;font-weight:700}.remember-label{display:flex!important;align-items:flex-start;gap:11px;margin-top:16px!important;margin-bottom:14px!important;padding:12px;background:#f5f7fb;border:1px solid #e6eaf1;border-radius:11px;cursor:pointer}.remember-label input{width:18px!important;height:18px;flex-shrink:0;margin:2px 0 0;accent-color:var(--brand)}.remember-label span{display:flex;flex-direction:column;gap:4px}.remember-label strong{font-size:13px}.remember-label small{font-size:11px;line-height:1.55;font-weight:400;color:var(--muted)}

/* V1.5 browser thumbnail cache controls */
.clear-cache-button{margin-top:2px;width:100%;padding:10px}.clear-cache-button:focus{outline:2px solid var(--brand)}