:root{--background:#f7f9fc;--surface:#fff;--surface-muted:#f2f6fb;--surface-tint:#fff4f8;--text:#182033;--muted:#607086;--border:#d9e2ee;--accent:#2aa79b;--accent-strong:#0f766e;--accent-soft:#e7f8f5;--rose:#f472a5;--rose-soft:#fff1f6;--danger:#c9354d;--danger-soft:#fff1f3;--shadow:0 12px 28px #17203314}*{box-sizing:border-box}html,body{background:linear-gradient(180deg, #fbfcff 0%, var(--background) 42%, #f4f7fb 100%);min-height:100%;color:var(--text);margin:0;font-family:Arial,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif}button,input,textarea{font:inherit}button{border:0}a{color:inherit}.app-shell{background:0 0;min-height:100vh}.login-screen{place-items:center;min-height:100vh;padding:24px;display:grid}.login-panel{border:1px solid var(--border);background:var(--surface);width:min(100%,420px);box-shadow:var(--shadow);border-radius:8px;padding:28px}.login-title,.page-title{letter-spacing:0;margin:0}.login-title{font-size:1.6rem}.login-form{gap:14px;margin-top:24px;display:grid}.field-label{color:var(--muted);gap:8px;font-size:.92rem;font-weight:700;display:grid}.text-input{border:1px solid var(--border);background:var(--surface);width:100%;min-height:46px;color:var(--text);border-radius:8px;padding:10px 12px;box-shadow:inset 0 1px #fffc}.text-input:focus,.file-picker:focus-visible,.button:focus-visible,.icon-button:focus-visible,.album-chip:focus-visible,.album-sort-button:focus-visible,.photo-preview-button:focus-visible,.sort-button:focus-visible,.album-edit-toggle:focus-visible{outline-offset:2px;outline:3px solid #2aa79b38}.button,.icon-button{cursor:pointer;white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:8px;min-height:42px;font-weight:700;text-decoration:none;transition:background-color .14s,border-color .14s,color .14s,transform .14s;display:inline-flex}.button:disabled,.icon-button:disabled{cursor:not-allowed;opacity:.62}.button-primary{background:var(--accent);color:#fff;padding:0 16px;box-shadow:0 8px 18px #2aa79b33}.button-primary:hover:not(:disabled){background:var(--accent-strong)}.button-danger{background:var(--danger-soft);color:var(--danger);border:1px solid #c2415a3d;padding:0 12px}.button-danger:hover:not(:disabled){background:#ffe1e8}.button-secondary,.icon-button{border:1px solid var(--border);background:var(--surface);color:var(--text);box-shadow:0 5px 14px #1720330f}.button-secondary{padding:0 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10px;font-size:.82rem;font-weight:800;display:inline-flex}.album-sort-button:hover,.album-sort-button-active{background:var(--accent-soft);color:var(--accent-strong);border-color:#2aa79b5c}.album-strip{scrollbar-width:thin;gap:10px;padding:2px 0 4px;display:flex;overflow-x:auto}.album-chip{border:1px solid var(--border);background:var(--surface);min-width:max-content;min-height:40px;color:var(--text);cursor:pointer;border-radius:8px;align-items:center;gap:8px;padding:0 12px;font-weight:700;display:inline-flex;box-shadow:0 7px 16px #1720330d}.album-chip:hover,.album-chip-active{background:var(--accent-soft);color:var(--accent-strong);border-color:#2aa79b6b}.album-count{background:var(--rose-soft);min-width:24px;height:24px;color:var(--muted);border-radius:999px;justify-content:center;align-items:center;font-size:.78rem;display:inline-flex}.album-chip-active .album-count{background:var(--accent);color:#fff}.sort-bar{border:1px solid 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