:root{--radius-xl: 16px;--radius-2xl: 18px;--radius-3xl: 24px;--text-xs: clamp(.675rem, .625rem + .25vw, .75rem);--text-sm: clamp(.75rem, .7rem + .25vw, .875rem);--text-base: clamp(.875rem, .825rem + .25vw, 1rem);--text-lg: clamp(1rem, .925rem + .375vw, 1.125rem);--text-xl: clamp(1.125rem, 1.025rem + .5vw, 1.375rem);--text-2xl: clamp(1.375rem, 1.175rem + .75vw, 1.75rem);--text-3xl: clamp(1.625rem, 1.325rem + 1.25vw, 2.125rem);--text-4xl: clamp(1.875rem, 1.475rem + 1.75vw, 2.875rem);--font-serif: Georgia, "Times New Roman", serif;--font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--z-content: 1;--z-float: 10;--z-avatar: 50;--z-popover: 100;--z-panel: 200;--z-overlay: 300;--z-modal: 400}:root{--ref-green-500: #22c55e;--ref-green-600: #16a34a;--ref-green-700: #15803d;--ref-amber-500: #f59e0b;--ref-amber-400: #fbbf24;--ref-red-100: #fee2e2;--ref-red-200: #fecaca;--ref-red-300: #fca5a5;--ref-red-400: #f87171;--ref-red-600: #dc2626;--color-bg: var(--theme-bg, #ffffff);--color-panel: var(--theme-panel, #ffffff);--color-panel-soft: var(--theme-panel-soft, #f8f8f8);--color-surface: var(--theme-surface, #ffffff);--color-surface-alt: var(--theme-surface-alt, #f5f5f5);--color-surface-raised: var(--theme-surface-raised, rgba(255, 255, 255, .96));--color-surface-inset: var(--theme-surface-inset, #eeeeee);--color-text: var(--theme-text, #111111);--color-text-muted: var(--theme-text-muted, #666666);--color-text-muted-2: var(--theme-text-muted-2, #999999);--color-border: var(--theme-border, #dddddd);--color-border-2: var(--theme-border-2, #cccccc);--color-accent: var(--theme-accent, #2563eb);--color-accent-light: var(--theme-accent-light, #60a5fa);--color-accent-subtle: var(--theme-accent-subtle, rgba(37, 99, 235, .12));--color-success: var(--theme-success, var(--ref-green-600));--color-success-strong: var(--theme-success-strong, var(--ref-green-700));--color-warning: var(--theme-warning, var(--ref-amber-500));--color-danger-soft: var(--theme-danger-soft, rgba(254, 226, 226, .5));--color-danger-border: var(--theme-danger-border, var(--ref-red-200));--color-danger-muted: var(--theme-danger-muted, var(--ref-red-300));--color-danger: var(--theme-danger, var(--ref-red-600));--shadow-sm: var(--theme-shadow-sm, 0 1px 2px rgb(0 0 0 / .08));--shadow-inner: var(--theme-shadow-inner, inset 0 2px 10px rgb(0 0 0 / .06));--syntax-json-key: var(--theme-json-key, #a626a4);--syntax-json-string: var(--theme-json-string, #50a14f);--syntax-json-number: var(--theme-json-number, #986801);--syntax-json-boolean: var(--theme-json-boolean, #c18401);--syntax-json-null: var(--theme-json-null, #e45649);--syntax-json-punc: var(--theme-json-punc, #383a42)}:root,[data-theme=light]{--brand-h: 32;--brand-s: 88%;--brand-l: 44%;--theme-bg: #f7f3ee;--theme-panel: #fffdfa;--theme-panel-soft: #fbf6ef;--theme-surface: #fffaf5;--theme-surface-alt: #f6efe6;--theme-surface-raised: rgba(255, 253, 250, .96);--theme-surface-inset: #ebe2d7;--theme-text: #201a15;--theme-text-muted: #7a6959;--theme-text-muted-2: #ab9784;--theme-border: #e8dccf;--theme-border-2: #dbcab8;--theme-accent: hsl(var(--brand-h) var(--brand-s) var(--brand-l));--theme-accent-light: hsl(var(--brand-h) var(--brand-s) 58%);--theme-accent-subtle: hsl(var(--brand-h) 90% 90% / .9);--theme-success: var(--ref-green-600);--theme-success-strong: var(--ref-green-700);--theme-warning: var(--ref-amber-500);--theme-danger-soft: rgb(254 226 226 / .5);--theme-danger-border: var(--ref-red-200);--theme-danger-muted: var(--ref-red-300);--theme-danger: var(--ref-red-600);--theme-shadow-sm: 0 1px 2px rgb(0 0 0 / .06);--theme-shadow-inner: inset 0 2px 10px rgb(0 0 0 / .05);--theme-json-key: #a626a4;--theme-json-string: #50a14f;--theme-json-number: #986801;--theme-json-boolean: #c18401;--theme-json-null: #e45649;--theme-json-punc: #383a42}[data-theme=dark]{--brand-h: 36;--brand-s: 94%;--brand-l: 52%;--theme-bg: #18181b;--theme-panel: #27272a;--theme-panel-soft: #222226;--theme-surface: #232326;--theme-surface-alt: #1e1e22;--theme-surface-raised: rgba(39, 39, 42, .96);--theme-surface-inset: #141417;--theme-text: #e4e4e7;--theme-text-muted: #a1a1aa;--theme-text-muted-2: #71717a;--theme-border: #3f3f46;--theme-border-2: #52525b;--theme-accent: hsl(var(--brand-h) var(--brand-s) 52%);--theme-accent-light: hsl(var(--brand-h) var(--brand-s) 62%);--theme-accent-subtle: hsl(var(--brand-h) 50% 28% / .45);--theme-success: var(--ref-green-500);--theme-success-strong: var(--ref-green-600);--theme-warning: var(--ref-amber-400);--theme-danger-soft: rgb(127 29 29 / .3);--theme-danger-border: #7f1d1d;--theme-danger-muted: #991b1b;--theme-danger: var(--ref-red-400);--theme-shadow-sm: 0 1px 2px rgb(0 0 0 / .22);--theme-shadow-inner: inset 0 2px 10px rgb(0 0 0 / .18);--theme-json-key: #c678dd;--theme-json-string: #98c379;--theme-json-number: #d19a66;--theme-json-boolean: #e5c07b;--theme-json-null: #e06c75;--theme-json-punc: #abb2bf}:root{--sidebar-width: 240px;--right-panel-width: 340px;--bg: var(--color-bg);--bg-sidebar: var(--color-panel-soft);--bg-sidebar-active: var(--color-accent-subtle);--surface: var(--color-surface);--surface-hover: var(--color-surface-alt);--border: var(--color-border);--border-strong: var(--color-border-2);--accent: var(--color-accent);--accent-hover: var(--color-accent-light);--accent-subtle: var(--color-accent-subtle);--text: var(--color-text);--text-secondary: var(--color-text-muted);--text-muted: var(--color-text-muted-2);--danger: var(--color-danger);--danger-bg: var(--color-danger-soft);--radius-sm: 6px;--radius: 8px;--radius-lg: 12px;--shadow: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 12px 40px rgba(0,0,0,.12);--font: var(--font-sans)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);font-size:14px;line-height:1.5;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}a{color:var(--accent);text-decoration:none}.loading-screen{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;background:var(--bg)}.loading-spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-secondary);font-size:14px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--bg)}.login-card{width:min(420px,100%);background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:40px 36px;text-align:center}.login-brand{margin-bottom:28px}.login-brand-mark{width:56px;height:56px;border-radius:14px;background:var(--accent);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;margin-bottom:12px}.login-brand-name{font-size:20px;font-weight:700;margin:0}.login-tagline{color:var(--text-secondary);font-size:14px;margin-top:4px}.login-form{display:flex;flex-direction:column;gap:16px;text-align:left}.login-submit{width:100%;padding:12px;font-size:15px}.login-footer{color:var(--text-muted);font-size:12px;margin-top:20px}.form-field{display:flex;flex-direction:column;gap:6px}.form-field label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-field input,.form-field select,.form-field textarea{padding:10px 12px;border:1px solid var(--border-strong);border-radius:var(--radius);background:var(--surface);transition:border-color .15s}.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle)}.form-error{color:var(--danger);background:var(--danger-bg);border:1px solid #efc9d4;padding:10px 12px;border-radius:var(--radius);font-size:13px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:var(--radius);font-weight:500;font-size:14px;border:none;transition:background .15s,box-shadow .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border-strong)}.btn-secondary:hover{background:var(--surface-hover)}.btn-sm{padding:4px 10px;font-size:12px;border-radius:var(--radius-sm);border:none;background:none;color:var(--text-secondary);transition:background .15s,color .15s}.btn-sm:hover{background:var(--surface-hover);color:var(--text)}.btn-ghost{background:none;border:1px solid var(--border)}.btn-ghost:hover{background:var(--surface-hover)}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:var(--radius);border:none;background:none;color:var(--text-secondary);transition:background .15s,color .15s}.icon-btn:hover{background:var(--surface-hover);color:var(--text)}.icon-btn--active{background:var(--accent-subtle);color:var(--accent)}.app-shell{display:grid;grid-template-columns:var(--sidebar-width) 1fr;min-height:100vh}.app-shell--right-open{grid-template-columns:var(--sidebar-width) 1fr}.app-main{display:flex;flex-direction:column;min-height:0;overflow:hidden}.app-content{flex:1;display:flex;min-height:0;overflow:hidden}.app-center{flex:1;min-width:0;display:flex;flex-direction:column;overflow:hidden}.app-right{width:var(--right-panel-width);border-left:1px solid var(--border);background:var(--surface);overflow-y:auto;flex-shrink:0}.right-panel-backdrop{display:none}.sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:16px 12px;overflow-y:auto}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:4px 4px 16px;margin-bottom:4px}.sidebar-close-btn{display:none}.brand{display:flex;align-items:center;gap:10px}.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;flex-shrink:0}.brand-text{line-height:1.3}.brand-text strong{font-size:14px;display:block}.brand-tagline{font-size:11px;color:var(--text-muted)}.sidebar-section-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);padding:0 8px;margin-bottom:6px}.channel-list{display:flex;flex-direction:column;gap:2px}.channel-item{display:flex;align-items:center;gap:6px;padding:6px 10px;border-radius:var(--radius);border:none;background:none;text-align:left;font-size:14px;font-weight:400;color:var(--text-secondary);transition:background .12s,color .12s}.channel-item:hover{background:var(--surface-hover);color:var(--text)}.channel-item--active{background:var(--bg-sidebar-active);color:var(--accent);font-weight:600}.channel-hash{font-weight:500;opacity:.6}.sidebar-spacer{flex:1}.sidebar-user{display:flex;align-items:center;gap:10px;padding:12px 8px;margin-top:8px;border-top:1px solid var(--border)}.sidebar-user-info{display:flex;flex-direction:column;gap:2px;min-width:0}.sidebar-user-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-actions{display:flex;flex-direction:column;gap:2px;margin-top:8px}.sidebar-action-btn{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:var(--radius);border:none;background:none;text-align:left;font-size:13px;color:var(--text-secondary);transition:background .12s}.sidebar-action-btn:hover{background:var(--surface-hover)}.topbar{display:flex;align-items:center;gap:16px;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--surface);min-height:56px}.topbar-menu-btn{display:none}.topbar-channel{flex:1;min-width:0}.topbar-title{font-size:16px;font-weight:600;margin:0}.topbar-desc{font-size:12px;color:var(--text-muted)}.topbar-actions{display:flex;align-items:center;gap:8px}.topbar-search{position:relative;display:flex;align-items:center}.topbar-search-icon{position:absolute;left:10px;color:var(--text-muted);pointer-events:none}.topbar-search-input{padding:7px 12px 7px 32px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);font-size:13px;width:200px;transition:border-color .15s,width .2s}.topbar-search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle);width:260px}.messaging-center{flex:1;display:flex;flex-direction:column;overflow:hidden}.message-feed{flex:1;overflow-y:auto;padding:16px 16px 8px}.day-divider{display:flex;align-items:center;gap:12px;padding:16px 0 8px}.day-divider-line{flex:1;height:1px;background:var(--border)}.day-divider-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.3px;color:var(--text-muted);white-space:nowrap}.message-card{padding:10px 12px;margin-bottom:8px;border-radius:var(--radius);border:1px solid transparent;transition:background .12s,border-color .12s;cursor:pointer;position:relative}.message-card:hover{background:var(--surface-hover);border-color:var(--border)}.message-card--selected{background:var(--accent-subtle);border-color:var(--border)}.message-card-row{display:flex;gap:10px;align-items:flex-start}.message-card-body{flex:1;min-width:0}.message-card-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:2px}.message-author{font-size:14px;font-weight:600}.message-time{font-size:12px;color:var(--text-muted)}.message-text{font-size:14px;line-height:1.5;word-break:break-word;margin:0}.message-card-actions{position:absolute;top:6px;right:8px;display:flex;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:2px;box-shadow:var(--shadow-sm)}.message-reply-count{display:inline-flex;align-items:center;gap:4px;margin-top:6px;padding:2px 0;font-size:12px;color:var(--accent);font-weight:500;border:none;background:none;cursor:pointer}.message-reply-count:hover{text-decoration:underline}.attachment-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.attachment-item{display:flex;align-items:center;gap:8px;padding:6px 10px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:13px}.attachment-thumb{border:none;background:var(--accent-subtle);border-radius:var(--radius-sm);width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer}.attachment-thumb-icon{font-size:16px}.attachment-file-icon{font-size:18px}.attachment-info{display:flex;flex-direction:column;min-width:0}.attachment-name{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:120px}.attachment-size{font-size:11px;color:var(--text-muted)}.attachment-actions{display:flex;gap:4px}.composer{padding:12px 20px 16px;border-top:1px solid var(--border);background:var(--surface)}.composer-input-row{display:flex;align-items:flex-end;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:8px 12px;transition:border-color .15s}.composer-input-row:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle)}.composer-input{flex:1;border:none;background:none;resize:none;padding:4px 0;font-size:14px;line-height:1.5;min-height:24px;max-height:160px}.composer-input:focus{outline:none}.composer-input::placeholder{color:var(--text-muted)}.composer-btns{display:flex;gap:4px;flex-shrink:0}.composer-attach-btn{color:var(--text-muted)}.composer-attach-btn:hover{color:var(--text)}.composer-send-btn{width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;border:none;display:flex;align-items:center;justify-content:center;transition:background .15s}.composer-send-btn:hover{background:var(--accent-hover)}.composer-send-btn:disabled{opacity:.35;cursor:not-allowed}.composer-attachments{margin-top:8px;display:flex;align-items:center;gap:8px}.composer-attach-count{font-size:12px;color:var(--accent);font-weight:500;padding:4px 10px;background:var(--accent-subtle);border-radius:999px}.thread-panel{display:flex;flex-direction:column;height:100%}.thread-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.thread-title{font-size:15px;font-weight:600;margin:0}.thread-original{padding:16px;border-bottom:1px solid var(--border)}.thread-msg-row{display:flex;gap:10px;align-items:flex-start}.thread-msg-body{flex:1;min-width:0}.thread-msg-meta{display:flex;align-items:center;gap:8px;margin-bottom:2px}.thread-divider{padding:8px 16px;border-bottom:1px solid var(--border);background:var(--bg)}.thread-reply-label{font-size:12px;color:var(--text-muted);font-weight:500}.thread-replies{flex:1;overflow-y:auto;padding:12px 16px;display:flex;flex-direction:column;gap:12px}.thread-reply{display:flex;gap:8px;align-items:flex-start}.thread-reply-body{flex:1;min-width:0}.thread-composer{display:flex;align-items:flex-end;gap:8px;padding:12px 16px;border-top:1px solid var(--border)}.thread-composer-input{flex:1;border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;font-size:14px;resize:none;min-height:36px;max-height:100px;background:var(--bg)}.thread-composer-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle)}.file-panel,.gallery-panel{padding:0;display:flex;flex-direction:column;height:100%}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.panel-title{font-size:15px;font-weight:600;margin:0}.file-panel-repo-select{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border)}.file-panel-select{flex:1;padding:7px 10px;border:1px solid var(--border);border-radius:var(--radius);font-size:13px;background:var(--surface)}.upload-zone{margin:12px 16px;padding:20px;border:2px dashed var(--border-strong);border-radius:var(--radius-lg);text-align:center;transition:border-color .2s,background .2s;position:relative}.upload-zone--active{border-color:var(--accent);background:var(--accent-subtle)}.upload-zone--busy{opacity:.7;pointer-events:none}.upload-zone-content{display:flex;flex-direction:column;align-items:center;gap:8px}.upload-zone-icon{color:var(--text-muted)}.upload-zone-text{font-size:13px;font-weight:500;color:var(--text-secondary);margin:0}.upload-zone-hint{font-size:11px;color:var(--text-muted)}.upload-zone-btn{margin-top:4px;padding:6px 16px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;touch-action:manipulation}.upload-zone-btn:disabled{opacity:.5;cursor:not-allowed}.upload-zone-btn:hover:not(:disabled){background:var(--accent-dark, #238a7e)}.upload-zone-error{margin-top:8px;font-size:12px;color:var(--danger)}.upload-progress{margin-top:12px;display:flex;align-items:center;gap:8px}.upload-progress-bar{flex:1;height:6px;border-radius:999px;background:var(--border);overflow:hidden}.upload-progress-fill{height:100%;background:var(--accent);border-radius:999px;transition:width .2s}.upload-progress-text{font-size:12px;color:var(--text-muted);min-width:32px;text-align:right}.upload-queue{margin-top:10px;display:flex;flex-direction:column;gap:4px}.upload-queue-item{display:flex;justify-content:space-between;align-items:center;padding:6px 10px;border-radius:var(--radius-sm);font-size:12px;background:var(--bg)}.upload-queue-item--uploading{color:var(--accent)}.upload-queue-item--done{color:var(--text-muted)}.upload-queue-status{font-weight:500;text-transform:capitalize}.file-list{flex:1;overflow-y:auto;padding:8px 16px}.file-list-empty{padding:24px 0;text-align:center;color:var(--text-muted);font-size:13px}.file-list-item{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius);transition:background .12s}.file-list-item:hover{background:var(--surface-hover)}.file-list-item-icon{font-size:20px;flex-shrink:0}.file-list-item-info{flex:1;min-width:0;display:flex;flex-direction:column}.file-list-item-name{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-list-item-meta{font-size:11px;color:var(--text-muted)}.file-list-item-actions{display:flex;gap:4px;flex-shrink:0}.repo-create-form{display:flex;flex-direction:column;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border)}.repo-create-form input{padding:7px 10px;border:1px solid var(--border);border-radius:var(--radius);font-size:13px}.gallery-filter{padding:12px 16px;border-bottom:1px solid var(--border)}.gallery-select{width:100%;padding:7px 10px;border:1px solid var(--border);border-radius:var(--radius);font-size:13px;background:var(--surface)}.gallery-empty{padding:32px 16px;text-align:center;color:var(--text-muted);font-size:13px}.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding:12px 16px;overflow-y:auto;flex:1}.gallery-thumb{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:0;overflow:hidden;cursor:pointer;transition:box-shadow .15s;display:flex;flex-direction:column}.gallery-thumb:hover{box-shadow:var(--shadow)}.gallery-thumb-inner{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--bg);font-size:28px}.gallery-thumb-name{font-size:11px;padding:6px 8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-secondary)}.viewer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:1100;padding:24px}.viewer{width:min(900px,100%);max-height:90vh;background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden}.viewer-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.viewer-filename{font-weight:600;font-size:14px}.viewer-body{flex:1;display:flex;align-items:center;justify-content:center;position:relative;min-height:300px;overflow:hidden}.viewer-img-wrap{flex:1;display:flex;align-items:center;justify-content:center;padding:16px}.viewer-img{max-width:100%;max-height:70vh;border-radius:var(--radius)}.viewer-loading{color:var(--text-muted)}.viewer-nav{position:absolute;top:50%;transform:translateY(-50%);background:var(--surface);border:1px solid var(--border);border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow);transition:background .15s}.viewer-nav:hover{background:var(--surface-hover)}.viewer-nav--prev{left:12px}.viewer-nav--next{right:12px}.viewer-meta{display:flex;gap:16px;padding:12px 16px;border-top:1px solid var(--border);font-size:12px;color:var(--text-muted)}.preview-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px}.preview-modal{width:min(900px,100%);max-height:88vh;background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden}.preview-modal-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.preview-modal-body{flex:1;padding:16px;display:flex;flex-direction:column;gap:12px;overflow:auto}.preview-frame{width:100%;min-height:60vh;border:1px solid var(--border);border-radius:var(--radius);background:#fff}.preview-open-link{align-self:center;text-decoration:none}.admin-panel{max-width:960px;margin:0 auto;padding:32px 24px}.admin-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}.admin-title{font-size:22px;font-weight:700;margin:0}.admin-subtitle{font-size:14px;color:var(--text-secondary);margin-top:4px}.admin-header-actions{display:flex;gap:8px}.admin-status{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;background:var(--accent-subtle);border-radius:var(--radius);margin-bottom:16px;font-size:13px;font-family:monospace}.user-table-wrap{overflow-x:auto}.user-table{width:100%;border-collapse:collapse;font-size:13px}.user-table th{text-align:left;padding:10px 14px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);border-bottom:2px solid var(--border)}.user-table td{padding:10px 14px;border-bottom:1px solid var(--border)}.user-table tr:hover td{background:var(--surface-hover)}.user-table-name{font-weight:500}.user-table-email{color:var(--text-secondary)}.user-form{display:flex;flex-direction:column;gap:14px}.user-form-title{font-size:16px;font-weight:600;margin:0;display:none}.user-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.user-form-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:8px}.badge{display:inline-flex;align-items:center;padding:1px 7px;border-radius:999px;font-size:11px;font-weight:500;background:var(--bg);color:var(--text-muted);border:1px solid var(--border)}.badge--admin{background:var(--accent-subtle);color:var(--accent);border-color:transparent}.badge--manager{background:#fff3e0;color:#e65100;border-color:transparent}.badge--member{background:var(--bg);color:var(--text-muted)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1050;padding:24px}.modal{width:min(480px,100%);background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);overflow:hidden}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-title{font-size:16px;font-weight:600;margin:0}.modal-body{padding:20px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:48px 24px;text-align:center}.empty-state-icon{font-size:32px;opacity:.6}.empty-state-title{font-size:15px;font-weight:600;color:var(--text-secondary);margin:0}.empty-state-desc{font-size:13px;color:var(--text-muted);margin:0;max-width:280px}.sidebar-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000004d;z-index:90}@media (max-width: 1024px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:100;width:var(--sidebar-width);transform:translate(-100%);transition:transform .25s ease}.sidebar--open{transform:translate(0)}.sidebar-close-btn,.topbar-menu-btn{display:flex}.app-right{width:100%;position:fixed;right:0;top:0;bottom:0;z-index:80;max-width:380px;box-shadow:var(--shadow-lg)}.right-panel-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:79;background:transparent}.topbar-search-input{width:140px}.topbar-search-input:focus{width:180px}}@media (max-width: 640px){.topbar{padding:10px 14px}.topbar-search{display:none}.message-feed{padding:12px 14px}.composer{padding:10px 14px 14px}.app-right{max-width:100%}.admin-panel{padding:20px 16px}.admin-header{flex-direction:column}.admin-header-actions{width:100%}.admin-header-actions .btn{flex:1}.user-form-grid{grid-template-columns:1fr}.gallery-grid{grid-template-columns:repeat(2,1fr);gap:6px}}.btn-danger-ghost{color:var(--danger)}.btn-danger-ghost:hover{background:var(--danger-bg)}.message-edit-form{display:flex;flex-direction:column;gap:6px;margin-top:4px}.message-edit-textarea{width:100%;min-height:60px;padding:8px 10px;border:1px solid var(--accent);border-radius:var(--radius);background:var(--surface);color:var(--text);font:inherit;font-size:14px;resize:vertical;outline:none}.message-edit-actions{display:flex;gap:6px;justify-content:flex-end}.message-edited-tag{font-size:11px;color:var(--text-muted);margin-left:6px}.reaction-bar{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px;align-items:center}.reaction-btn{display:inline-flex;align-items:center;gap:3px;padding:2px 8px;border-radius:12px;font-size:13px;background:var(--surface-hover);border:1px solid var(--border);color:var(--text);cursor:pointer;transition:background .15s}.reaction-btn:hover{background:var(--accent-subtle)}.reaction-btn.reacted{background:var(--accent-subtle);border-color:var(--accent);color:var(--accent)}.reaction-add-btn{padding:2px 6px;border-radius:12px;font-size:12px;background:transparent;border:1px dashed var(--border);color:var(--text-muted);cursor:pointer}.reaction-add-btn:hover{background:var(--surface-hover)}.reaction-picker{position:absolute;bottom:100%;left:0;z-index:100;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:6px;display:flex;gap:4px;box-shadow:var(--shadow)}.reaction-picker button{background:none;border:none;font-size:18px;cursor:pointer;padding:2px 4px;border-radius:4px}.reaction-picker button:hover{background:var(--surface-hover)}.gallery-thumb-img{width:100%;aspect-ratio:1;background:var(--surface-hover);border-radius:var(--radius-sm);overflow:hidden;display:flex;align-items:center;justify-content:center}.gallery-thumb-img img{width:100%;height:100%;object-fit:cover}.gallery-thumb-placeholder{font-size:24px;opacity:.4}.file-panel--full,.gallery-panel--full{width:100%;max-width:100%;height:100%;border-left:none}.gallery-thumb-wrap{position:relative}.gallery-thumb-delete{position:absolute;top:4px;right:4px;width:22px;height:22px;border-radius:50%;background:#0000008c;border:none;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:opacity .15s;z-index:2}.gallery-thumb-wrap:hover .gallery-thumb-delete{opacity:1}.gallery-thumb-delete:hover{background:var(--danger)}