:root{color-scheme:light;--bg: #F5F7FA;--surface: #FFFFFF;--surface-alt: #F0F3F7;--border: #E2E8F0;--text: #0F172A;--text-muted: #64748B;--accent: #1877F2;--accent-soft: #E8F1FE;--danger: #DC2626;--danger-soft: #FEF2F2;--success: #16A34A;--success-soft:#F0FDF4;--warning: #D97706;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 2px rgb(15 23 42 / .06), 0 1px 3px rgb(15 23 42 / .04);--shadow-lg: 0 4px 12px rgb(15 23 42 / .08)}[data-theme=dark]{color-scheme:dark;--bg: #0B1120;--surface: #151C2C;--surface-alt: #1E2739;--border: #2A3548;--text: #E8ECF3;--text-muted: #94A3B8;--accent: #2563EB;--accent-soft: #16253D;--danger: #F87171;--danger-soft: #2A1618;--success: #4ADE80;--success-soft:#122318;--warning: #FBBF24;--shadow: 0 1px 2px rgb(0 0 0 / .3), 0 1px 3px rgb(0 0 0 / .2);--shadow-lg: 0 4px 12px rgb(0 0 0 / .35)}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5;transition:background-color .15s,color .15s}main{flex:1;width:100%;max-width:1000px;margin:0 auto;padding:24px 16px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.site-header .brand{font-weight:600;letter-spacing:-.01em}.site-header .spacer{flex:1}.site-header .greeting{color:var(--text);font-weight:600;font-size:.9375rem;white-space:nowrap}button,.btn{font:inherit;padding:8px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface-alt);color:var(--text);cursor:pointer;transition:background-color .15s}button:hover:not(:disabled){background:var(--border)}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover:not(:disabled){filter:brightness(1.1)}button.danger{color:var(--danger)}input,select,textarea{font:inherit;width:100%;padding:9px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg);color:var(--text)}label{display:block;margin-bottom:6px;color:var(--text-muted);font-size:.875rem}.field{margin-bottom:16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.stack>*+*{margin-top:12px}.row{display:flex;align-items:center;gap:12px}.muted{color:var(--text-muted)}.small{font-size:.875rem}.error{color:var(--danger)}.center{max-width:420px;margin:48px auto}.token-display{font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:1.125rem;letter-spacing:.06em;word-break:break-all;background:var(--bg);border:1px solid var(--accent);border-radius:var(--radius);padding:16px;margin:12px 0}.conv-item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:14px 16px}.empty{text-align:center;padding:48px 16px;color:var(--text-muted)}.site-footer{display:flex;align-items:center;justify-content:center;text-align:center;gap:8px;padding:14px 20px;background:var(--surface);border-top:1px solid var(--border);font-size:.8125rem;line-height:1;flex-wrap:wrap}.site-foot-brand{color:var(--text);font-weight:600}.site-foot-meta,.site-foot-tagline{color:var(--text-muted)}.site-foot-divider{width:1px;height:14px;background:var(--border);margin:0 6px}@media(max-width:480px){.site-footer{gap:2px 8px;font-size:.75rem}.site-foot-divider{display:none}.site-foot-tagline{flex-basis:100%}.site-header{padding:10px 12px;gap:8px}.site-header .greeting{font-size:.8125rem}.brand-icon{height:20px}}.message-pane{display:flex;flex-direction:column;gap:10px;min-height:320px;max-height:60vh;overflow-y:auto}.bubble-row{display:flex}.bubble-row.mine{justify-content:flex-end}.bubble{max-width:72%;padding:10px 14px;border-radius:var(--radius);background:var(--surface-alt);border:1px solid var(--border);word-break:break-word}.bubble-row.mine .bubble{background:var(--accent);border-color:var(--accent);color:#fff}.bubble .stamp{display:block;margin-top:4px;font-size:.6875rem;opacity:.7}.conv-item{cursor:pointer}.conv-item:hover{background:var(--surface-alt)}.brand{display:inline-flex;align-items:center;gap:8px}.brand-button{background:none;border:none;padding:0;cursor:pointer;font:inherit;font-weight:600;letter-spacing:-.01em;color:var(--text)}.brand-button:hover{background:none;opacity:.8}.brand-icon{height:22px;width:auto;display:block}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px}.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;display:flex;flex-direction:column;gap:4px}.stat-label{color:var(--text-muted);font-size:.8125rem}.stat-value{font-size:1.5rem;font-weight:600}.user-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.user-main{display:flex;flex-direction:column;min-width:180px;flex:1}.user-meta{display:flex;align-items:center;gap:8px}.user-actions{display:flex;gap:8px;margin-left:auto}.tag{background:var(--surface-alt);border:1px solid var(--border);border-radius:999px;padding:2px 10px;font-size:.75rem}.tag-off{color:var(--danger);border-color:var(--danger)}@media(max-width:560px){.user-actions{margin-left:0;width:100%}.user-actions button{flex:1}}.conn-down{color:var(--danger);display:inline-flex;align-items:center;gap:6px}.conn-down:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--danger);animation:conn-pulse 1.4s ease-in-out infinite}@keyframes conn-pulse{0%,to{opacity:1}50%{opacity:.3}}.profile-field{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:8px 0;border-bottom:1px solid var(--border)}.profile-field:last-of-type{border-bottom:none}.card{box-shadow:var(--shadow)}button,.btn{border-radius:var(--radius-sm);font-weight:500}button.primary{box-shadow:none}button.danger{color:var(--danger);border-color:var(--border)}button.danger:hover:not(:disabled){background:var(--danger-soft);border-color:var(--danger)}input,select,textarea{border-radius:var(--radius-sm)}input::placeholder{color:var(--text-muted)}.site-header{box-shadow:var(--shadow);border-bottom:none}.site-footer{border-top:1px solid var(--border)}.conv-item{transition:box-shadow .15s,border-color .15s}.conv-item:hover{background:var(--surface);border-color:var(--accent);box-shadow:var(--shadow-lg)}.bubble-row:not(.mine) .bubble{background:var(--surface-alt);border-color:var(--border)}.bubble-row.mine .bubble{box-shadow:var(--shadow)}.token-display{background:var(--accent-soft);border-color:var(--accent);color:var(--text);font-weight:600}.stat{box-shadow:var(--shadow)}.stat-value{color:var(--text)}.tag{background:var(--accent-soft);border-color:transparent;color:var(--accent);font-weight:500}.tag-off{background:var(--danger-soft);color:var(--danger)}.ok{color:var(--success)}.conn-down{color:var(--warning)}.conn-down:before{background:var(--warning)}.welcome h1{font-size:1.6rem;margin:8px 0 4px;letter-spacing:-.02em}.welcome p{margin:0}.action-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.action-card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;padding:16px 18px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);cursor:pointer;transition:border-color .15s,box-shadow .15s}.action-card:hover{background:var(--surface);border-color:var(--accent);box-shadow:var(--shadow-lg)}.action-card.primary-action{background:var(--accent);border-color:var(--accent)}.action-card.primary-action:hover{filter:brightness(1.06)}.action-title{font-weight:600;font-size:.9375rem}.action-desc{font-size:.8125rem;color:var(--text-muted)}.primary-action .action-title,.primary-action .action-desc{color:#fff}.primary-action .action-desc{opacity:.85}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:8px}.section-head h2{font-size:1rem;margin:0;color:var(--text-muted);font-weight:600;letter-spacing:.01em}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;font-weight:600;flex-shrink:0}.conv-main{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.conv-item .peer{font-weight:600}.conv-item.pending{cursor:default}.conv-item.pending:hover{border-color:var(--border);box-shadow:var(--shadow)}.expiry-badge,.pending-badge{font-size:.75rem;font-weight:500;padding:4px 10px;border-radius:999px;white-space:nowrap}.expiry-badge{background:var(--success-soft);color:var(--success)}.pending-badge{background:var(--surface-alt);color:var(--text-muted)}.token-blocks{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:16px 0}.token-block{font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;font-size:1rem;font-weight:600;letter-spacing:.08em;padding:10px 12px;background:var(--accent-soft);border:1px solid var(--accent);border-radius:var(--radius-sm);color:var(--text)}.token-input{font-family:ui-monospace,SF Mono,Menlo,Consolas,monospace;letter-spacing:.06em}.token-hint{background:var(--accent-soft);border-radius:var(--radius-sm);padding:12px 14px}.token-hint p{margin:0}@media(max-width:480px){.welcome h1{font-size:1.35rem}.section-head{flex-wrap:wrap}}.action-card:focus-visible{background:var(--surface)}.action-card.primary-action:focus-visible{background:var(--accent)}.action-card:hover:not(:disabled){background:var(--surface)}.action-card.primary-action:hover:not(:disabled){background:var(--accent)}.chat-header{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.chat-peer{display:flex;flex-direction:column;gap:1px}.encryption-notice{background:var(--success-soft);color:var(--success);border-radius:var(--radius-sm);padding:10px 14px;font-size:.8125rem;text-align:center}.admin-layout{display:flex;gap:20px;align-items:flex-start}.admin-nav{display:flex;flex-direction:column;gap:4px;width:176px;flex-shrink:0;position:sticky;top:16px}.admin-nav button{text-align:left;background:none;border:none;padding:9px 12px;border-radius:var(--radius-sm);color:var(--text-muted);font-weight:500}.admin-nav button:hover{background:var(--surface-alt);color:var(--text)}.admin-nav button.nav-active{background:var(--accent-soft);color:var(--accent);font-weight:600}.admin-main{flex:1;min-width:0}.admin-title{font-size:1.35rem;margin:0 0 4px;letter-spacing:-.02em}.profile-hero{display:flex;align-items:center;gap:14px;flex-wrap:wrap}@media(max-width:640px){.admin-layout{flex-direction:column}.admin-nav{flex-direction:row;width:100%;position:static;overflow-x:auto}.admin-nav button{white-space:nowrap}}.stat-note{font-size:.75rem;color:var(--text-muted)}.qr-wrap{display:flex;flex-direction:column;align-items:center;gap:10px;width:100%;padding:16px 0}.qr-canvas{border-radius:var(--radius-sm);border:1px solid var(--border);background:#fff;padding:8px}.qr-video{width:100%;max-width:320px;border-radius:var(--radius);border:1px solid var(--border);background:#000}.qr-wrap p{margin:0;max-width:320px;text-align:center}.row button{flex-shrink:0}button.primary:hover:not(:disabled),button.primary:focus-visible{background:var(--accent);color:#fff}button.danger:focus-visible{color:var(--danger)}