*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg: #0f172a;--bg-card: #1e293b;--bg-hover: #334155;--bg-input: #1e293b;--border: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--primary: #3b82f6;--primary-hover: #2563eb;--danger: #ef4444;--danger-hover: #dc2626;--green: #22c55e;--red: #ef4444;--radius: 8px;--radius-lg: 12px;--header-h: 56px;--nav-h: 56px}html,body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100dvh;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font:inherit}input{font:inherit}.app-layout{min-height:100dvh;display:flex;flex-direction:column}.app-header{height:var(--header-h);display:flex;align-items:center;justify-content:space-between;padding:0 16px;background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}.app-logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--text);text-decoration:none}.header-right{display:flex;align-items:center;gap:12px}.username{color:var(--text-muted);font-size:14px}.mobile-nav{display:none}.app-main{flex:1;padding:16px;max-width:1200px;width:100%;margin:0 auto}.btn-primary{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius);font-weight:500;font-size:14px;transition:background .15s}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:var(--bg-hover);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);font-weight:500;font-size:14px}.btn-icon{display:inline-flex;align-items:center;justify-content:center;padding:8px;background:none;border:none;color:var(--text-muted);border-radius:var(--radius);transition:background .15s,color .15s}.btn-icon:hover{background:var(--bg-hover);color:var(--text)}.btn-danger{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:var(--danger);color:#fff;border:none;border-radius:var(--radius);font-weight:500;font-size:14px}.btn-danger:hover{background:var(--danger-hover)}.btn-text{background:none;border:none;color:var(--primary);font-size:13px;padding:4px 0}.btn-full{width:100%;justify-content:center}.input{width:100%;padding:10px 12px;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);font-size:14px;outline:none;transition:border-color .15s}.input:focus{border-color:var(--primary)}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;color:var(--text-muted);margin-bottom:6px}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100dvh;padding:16px}.auth-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;width:100%;max-width:400px}.auth-card h1{font-size:24px;margin-bottom:4px}.auth-subtitle{color:var(--text-muted);font-size:14px;margin-bottom:24px}.auth-footer{text-align:center;margin-top:20px;font-size:14px;color:var(--text-muted)}.error-msg{color:var(--red);font-size:13px;margin:8px 0}.success-msg{color:var(--green);font-size:13px;margin:8px 0}.hint{color:var(--text-muted);font-size:12px;margin-top:8px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-header h1{font-size:22px}.header-left{display:flex;align-items:center;gap:8px}.group-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.group-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;text-decoration:none;color:var(--text);transition:border-color .15s,transform .15s}.group-card:hover{border-color:var(--primary);transform:translateY(-2px);text-decoration:none}.group-card-cover{height:120px;background:var(--bg-hover);display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.group-card-info{padding:12px 16px}.group-card-info h3{font-size:16px;margin-bottom:4px}.group-card-info p{color:var(--text-muted);font-size:13px;margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.group-card-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-muted)}.group-card-meta span{display:inline-flex;align-items:center;gap:4px}.role-badge{background:var(--bg-hover);padding:2px 8px;border-radius:12px;font-size:11px;text-transform:uppercase;letter-spacing:.5px}.visibility-badge{display:inline-flex;align-items:center;gap:4px;background:#3b82f626;color:var(--primary);padding:2px 8px;border-radius:12px;font-size:11px;font-weight:500}.visibility-options{display:flex;flex-direction:column;gap:8px}.visibility-option{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:border-color .15s;color:var(--text)}.visibility-option:hover{border-color:var(--primary)}.visibility-option.selected,.visibility-option:has(input:checked){border-color:var(--primary);background:#3b82f60d}.visibility-option input[type=radio]{margin-top:2px;accent-color:var(--primary)}.visibility-option svg{margin-top:2px;flex-shrink:0;color:var(--text-muted)}.visibility-option:has(input:checked) svg{color:var(--primary)}.visibility-option div{flex:1}.visibility-option strong{display:block;font-size:14px;margin-bottom:2px}.visibility-option span{font-size:12px;color:var(--text-muted)}.join-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 16px;background:#3b82f61a;border:1px solid var(--primary);border-radius:var(--radius-lg);margin-bottom:20px}.join-banner p{font-size:14px;color:var(--text)}.join-banner .btn-primary{flex-shrink:0;display:flex;align-items:center;gap:6px}.view-only-banner{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);margin-bottom:20px;font-size:14px;color:var(--text-muted)}.section-title{font-size:18px;font-weight:600;margin:32px 0 16px;color:var(--text)}.discover-card{display:flex;flex-direction:column}.discover-card .group-card-link{text-decoration:none;color:inherit;flex:1}.group-card-join{padding:0 16px 12px}.admin-user-details{display:flex;flex-direction:column;gap:2px}.admin-user-email{font-size:12px;color:var(--text-muted)}.btn-full{width:100%;display:flex;align-items:center;justify-content:center;gap:6px}.media-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:4px}.media-card{aspect-ratio:1;background:var(--bg-card);border:none;border-radius:4px;overflow:hidden;cursor:pointer;padding:0;position:relative}.media-card-inner{width:100%;height:100%;position:relative}.media-card-inner img{width:100%;height:100%;object-fit:cover}.media-placeholder{width:100%;height:100%;background:var(--bg-hover)}.media-badge{position:absolute;display:flex;align-items:center;gap:4px;padding:2px 6px;border-radius:4px;font-size:11px;font-weight:600}.video-badge{bottom:6px;left:6px;background:#000000b3;color:#fff}.size-badge{top:6px;right:6px;background:#ef4444d9;color:#fff}.upload-section{margin-bottom:20px}.dropzone{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:24px;text-align:center;color:var(--text-muted);cursor:pointer;transition:border-color .15s,background .15s;display:flex;flex-direction:column;align-items:center;gap:8px}.dropzone:hover,.dropzone-active{border-color:var(--primary);background:#3b82f60d}.dropzone p{font-size:14px}.upload-list{margin-top:12px;display:flex;flex-direction:column;gap:8px}.upload-item{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-card);border-radius:var(--radius);font-size:13px}.upload-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.upload-size{color:var(--text-muted)}.upload-progress{width:80px;height:4px;background:var(--bg-hover);border-radius:2px;overflow:hidden}.progress-bar{height:100%;background:var(--primary);transition:width .2s}.upload-error{display:flex;align-items:center;gap:4px;color:var(--red);font-size:12px}.text-green{color:var(--green)}.text-red{color:var(--red)}.media-viewer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000e6;z-index:100;display:flex;align-items:center;justify-content:center}.media-viewer-content{width:100%;height:100%;display:flex;flex-direction:column}.viewer-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#00000080}.viewer-filename{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewer-actions{display:flex;gap:4px;align-items:center}.viewer-actions .btn-icon.btn-danger{color:var(--danger);background:#ef444426;padding:6px 10px;gap:4px}.viewer-actions .btn-icon.btn-danger:hover{background:var(--danger);color:#fff}.confirm-label{font-size:12px;font-weight:600}.viewer-banner{display:flex;align-items:center;gap:8px;padding:8px 16px;background:#ef444426;color:var(--red);font-size:13px}.viewer-media{flex:1;display:flex;align-items:center;justify-content:center;padding:16px;overflow:hidden}.viewer-image{max-width:100%;max-height:100%;object-fit:contain}.viewer-video{max-width:100%;max-height:100%}.dialog-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}.dialog{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;width:100%;max-width:440px}.dialog-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.dialog-header h3{font-size:18px}.dialog-tabs{display:flex;gap:4px;margin-bottom:16px;background:var(--bg);padding:4px;border-radius:var(--radius)}.tab{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px;background:none;border:none;color:var(--text-muted);border-radius:6px;font-size:13px;transition:background .15s,color .15s}.tab:hover{color:var(--text)}.tab-active{background:var(--bg-card);color:var(--text)}.dialog-body{min-height:100px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.invite-link-row{display:flex;gap:8px}.settings-section{margin-bottom:32px}.settings-section h2{font-size:18px;margin-bottom:12px}.member-list{display:flex;flex-direction:column;gap:4px;margin-top:12px}.member-row{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--bg-card);border-radius:var(--radius)}.member-info{display:flex;align-items:center;gap:10px}.member-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.member-name{font-size:14px}.danger-zone{border-top:1px solid var(--danger);padding-top:16px}.danger-actions{display:flex;gap:8px}.empty-state{text-align:center;padding:48px 16px;color:var(--text-muted)}.empty-state h2{margin:12px 0 4px;color:var(--text)}.empty-state p{font-size:14px}.loading-screen{display:flex;align-items:center;justify-content:center;min-height:100dvh}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin:16px auto}@keyframes spin{to{transform:rotate(360deg)}}.sort-bar{display:flex;align-items:center;gap:8px;margin-bottom:12px}.sort-bar label{font-size:13px;color:var(--text-muted);white-space:nowrap}.sort-select{width:auto;min-width:160px;padding:6px 10px;font-size:13px}.uploader-badge{bottom:6px;right:6px;background:#000000b3;color:var(--text-muted);font-size:10px;font-weight:500;opacity:0;transition:opacity .15s}.media-card:hover .uploader-badge{opacity:1}.viewer-info{display:flex;flex-direction:column;gap:2px;overflow:hidden;min-width:0}.viewer-uploader{font-size:12px;color:var(--text-muted)}.friend-invite-list{display:flex;flex-direction:column;gap:4px;max-height:250px;overflow-y:auto}.friend-invite-row{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;background:var(--bg);border-radius:var(--radius)}.scroll-sentinel{height:1px}@media(max-width:768px){.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;height:var(--nav-h);background:var(--bg-card);border-top:1px solid var(--border);z-index:50;justify-content:space-around;align-items:center;padding-bottom:env(safe-area-inset-bottom)}.nav-item{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:11px;color:var(--text-muted);text-decoration:none}.nav-item.active{color:var(--primary)}.app-main{padding-bottom:calc(var(--nav-h) + 16px + env(safe-area-inset-bottom))}.media-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:2px}.group-grid{grid-template-columns:1fr}}@media(min-width:1024px){.media-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:6px}}