:root{--bg-color:#f8fafc;--header-bg:#fffc;--text-color:#0f172a;--card-bg:#fff;--border-color:#e2e8f0;--primary-color:#3b82f6;--tag-bg:#e0f2fe;--tag-text:#0369a1}:root[data-theme=dark]{--bg-color:#0f172a;--header-bg:#0f172acc;--text-color:#f8fafc;--card-bg:#1e293b;--border-color:#334155;--primary-color:#60a5fa;--tag-bg:#38bdf820;--tag-text:#7dd3fc}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;transition:background-color .3s,color .3s}.app-container{flex-direction:column;min-height:100vh;display:flex}.header{z-index:100;background:var(--header-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);padding:1rem 2rem;transition:all .3s;position:sticky;top:0}.header-content{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;display:flex}.header h1{letter-spacing:-.02em;font-size:1.5rem;font-weight:700}.theme-toggle{cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:.5rem;font-size:1.5rem;transition:transform .2s;display:flex}.theme-toggle:hover{transform:scale(1.1)}.main-content{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:2rem}.loading{text-align:center;opacity:.7;padding:4rem;font-size:1.2rem}.album-section{margin-bottom:4rem}.section-title{border-bottom:2px solid var(--primary-color);margin-bottom:1.5rem;padding-bottom:.5rem;font-size:2rem;font-weight:800;display:inline-block}.photo-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem;display:grid}.photo-card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:16px;flex-direction:column;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s;display:flex;overflow:hidden}.photo-card:hover{transform:translateY(-4px);box-shadow:0 12px 24px -10px #0000004d}.img-wrapper{aspect-ratio:4/3;background:#000;overflow:hidden}.img-wrapper img{object-fit:cover;width:100%;height:100%;transition:transform .5s}.photo-card:hover .img-wrapper img{transform:scale(1.05)}.photo-meta{padding:1rem}.tags{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.tag{background:var(--tag-bg);color:var(--tag-text);border-radius:999px;align-items:center;gap:.25rem;padding:.25rem .75rem;font-size:.85rem;font-weight:500;display:inline-flex}.remove-tag{color:inherit;cursor:pointer;opacity:.6;background:0 0;border:none;font-size:1rem;line-height:1}.remove-tag:hover{opacity:1}.add-tag-btn{border:1px dashed var(--border-color);color:var(--text-color);cursor:pointer;background:0 0;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-size:1.2rem;transition:border-color .2s,color .2s;display:flex}.add-tag-btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.tag-input-wrapper{gap:.5rem;display:flex}.tag-input{background:var(--bg-color);border:1px solid var(--border-color);color:var(--text-color);border-radius:4px;outline:none;padding:.25rem .5rem;font-size:.85rem}.tag-input:focus{border-color:var(--primary-color)}.save-tag{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:4px;padding:.25rem .5rem;font-size:.85rem}