:root{--bg-deep: #f8fafc;--bg-primary: #ffffff;--bg-surface: #f1f5f9;--bg-card: #ffffff;--bg-card-hover: #f1f5f9;--bg-card-active: #e2e8f0;--border-subtle: rgba(0, 0, 0, .08);--border-light: rgba(0, 0, 0, .12);--border-cyan: rgba(2, 132, 199, .4);--border-emerald: rgba(16, 185, 129, .4);--text-main: #0f172a;--text-muted: #64748b;--text-dim: #94a3b8;--cyan-neon: #0284c7;--cyan-dark: #0369a1;--cyan-glow: rgba(2, 132, 199, .2);--emerald-neon: #10b981;--emerald-dim: rgba(16, 185, 129, .15);--purple-neon: #a855f7;--purple-dim: rgba(168, 85, 247, .15);--amber-alert: #f59e0b;--amber-dim: rgba(245, 158, 11, .15);--red-alert: #f43f5e;--red-dim: rgba(244, 63, 94, .15);--font-display: "Sora", system-ui, sans-serif;--font-body: "IBM Plex Sans", system-ui, sans-serif;--font-mono: "IBM Plex Mono", monospace;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--radius-full: 9999px;--shadow-subtle: 0 4px 20px rgba(0, 0, 0, .35);--shadow-glow: 0 0 24px rgba(0, 242, 254, .18);--shadow-emerald: 0 0 20px 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#0000000d}.msg-footer-bar{display:flex;align-items:center;justify-content:flex-end;gap:4px;margin-top:4px}.msg-timestamp{font-size:10.5px;opacity:.75;font-family:var(--font-mono)}.msg-decrypt-error{display:flex;align-items:center;gap:6px;color:#fda4af;font-size:12.5px}.msg-security-row{margin-top:4px;display:flex;align-items:center}.msg-verify-badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:var(--radius-full);font-size:11px;font-weight:500;transition:all .2s ease;cursor:pointer;border:1px solid transparent}.msg-verify-badge.is-valid{color:#047857;background:#ecfdf5;border-color:#a7f3d0}.msg-verify-badge.is-valid:hover{background:#d1fae5;border-color:#6ee7b7;transform:translateY(-1px);box-shadow:0 2px 6px 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var(--border-subtle);border-radius:var(--radius-full);padding:12px 20px;font-size:14.5px;color:var(--text-main);transition:all .2s ease}.composer-input:focus{border-color:var(--cyan-neon);box-shadow:0 0 0 3px #00f2fe26;background:var(--bg-card)}.btn-composer-send{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#00f2fe,#0891b2);color:#071018;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--shadow-glow);transition:all .15s ease}.btn-composer-send:hover:not(:disabled){transform:scale(1.06);filter:brightness(1.15)}.btn-composer-send:disabled{opacity:.4;cursor:not-allowed;box-shadow:none}.crypto-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#030712bf;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:999;padding:20px;animation:modal-fade-in .2s ease}@keyframes 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slide-up-reply{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.reply-bar-indicator{position:absolute;left:12px;top:8px;bottom:8px;width:3px;background:var(--cyan-neon);border-radius:2px}.reply-bar-content{flex:1;min-width:0;display:flex;flex-direction:column}.reply-bar-title{display:flex;align-items:center;font-size:12px;color:var(--text-main);margin-bottom:2px}.reply-bar-title strong{margin-left:4px;color:var(--cyan-neon)}.reply-bar-snippet{font-size:11.5px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-style:italic}.reply-bar-close{width:26px;height:26px;border-radius:50%;background:#ffffff0f;color:var(--text-muted);display:flex;align-items:center;justify-content:center;transition:all .15s ease;flex-shrink:0}.reply-bar-close:hover{background:#ffffff26;color:var(--text-main)}.theme-modal-window{max-width:560px}.theme-grid-selection{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:12px}@media (max-width: 500px){.theme-grid-selection{grid-template-columns:repeat(2,1fr)}}.theme-card-option{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:14px 10px;display:flex;flex-direction:column;align-items:center;gap:10px;transition:all .2s ease}.theme-card-option:hover{background:var(--bg-card-hover);border-color:var(--border-light);transform:translateY(-2px)}.theme-card-option.selected{background:var(--bg-card-active);border-color:var(--cyan-neon);box-shadow:0 0 16px var(--cyan-glow)}.theme-circle-preview{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px #0000004d}.theme-name-label{font-size:13px;font-weight:600;color:var(--text-main)}.theme-preview-card{background:#090d16;border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:16px}.theme-preview-head{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px}.theme-preview-content{display:flex;flex-direction:column;gap:12px}.preview-bubble{padding:10px 14px;border-radius:14px 14px 3px;font-size:13.5px;max-width:80%;align-self:flex-end;color:#fff}.preview-action-row{display:flex;align-items:center;gap:10px}.preview-btn{padding:6px 14px;border-radius:var(--radius-sm);color:#071018;font-size:12.5px;font-weight:600}.preview-badge{font-size:11.5px;font-weight:500;padding:3px 8px;border-radius:var(--radius-full);border:1px solid;background:#ffffff0d}.crypto-hash-lab{display:flex;flex-direction:column;gap:16px}.hash-role-callout{background:#00f2fe14;border:1px solid var(--border-cyan);border-radius:var(--radius-md);padding:14px;font-size:12.5px;line-height:1.5;color:var(--text-muted)}.hash-role-callout 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var(--border-light);border-radius:var(--radius-sm);padding:12px;display:flex;flex-direction:column;gap:4px;text-align:center}.stat-title{font-size:11.5px;color:var(--text-dim);text-transform:uppercase;font-weight:600}.stat-value{font-size:20px;font-weight:700;font-family:var(--font-mono)}.stat-sub{font-size:10.5px;color:var(--text-muted)}.quick-preset-btn{background:var(--bg-surface);border:1px solid var(--border-subtle);padding:4px 10px;border-radius:var(--radius-sm);font-size:11.5px;font-family:var(--font-mono);color:var(--text-muted);transition:all .15s ease}.quick-preset-btn:hover{background:var(--bg-card);color:var(--cyan-neon);border-color:var(--border-cyan)}.key-action-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.crypto-btn-sm{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--radius-sm);font-size:12px;font-weight:500;background:#ffffff0f;border:1px solid var(--border-subtle);color:var(--text-main);transition:all .15s ease;cursor:pointer}.crypto-btn-sm:hover{background:#ffffff1f;border-color:var(--border-light)}.crypto-btn-sm.highlight{background:#00f2fe1f;border-color:var(--border-cyan);color:var(--cyan-neon)}.crypto-btn-sm.primary{background:var(--theme-gradient, linear-gradient(135deg, #00f2fe 0%, #0891b2 100%));color:#05141f;font-weight:600;border:none}.crypto-link-btn{background:none;border:none;color:var(--cyan-neon);font-size:12px;display:inline-flex;align-items:center;gap:6px;cursor:pointer;padding:4px 0}.crypto-link-btn:hover{text-decoration:underline}.import-textarea{width:100%;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:8px 10px;font-family:var(--font-mono);font-size:12px;color:var(--text-main);resize:vertical}.import-textarea:focus{border-color:var(--cyan-neon);outline:none}.crypto-alert-banner{display:flex;align-items:center;gap:8px;padding:10px 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#0891b266}.badge-count-red{background:var(--red-alert);color:#fff;font-size:10.5px;font-weight:700;padding:1px 6px;border-radius:999px;min-width:16px;text-align:center}.friend-panel-body{max-height:320px;overflow-y:auto;padding-right:4px}.friend-requests-list{display:flex;flex-direction:column;gap:10px}.friend-request-card{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:10px 14px;transition:all .2s 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ease}.hub-user-item-card:hover{background:var(--bg-card-hover);border-color:var(--border-light);transform:translateY(-1px)}.hub-user-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.hub-name-row{display:flex;align-items:center;gap:8px}.hub-username{font-size:14.5px;font-weight:600;color:var(--text-main)}.hub-time{font-size:11px;color:var(--text-dim)}.hub-email{font-size:12.5px;color:var(--text-muted)}.hub-sec-tag{display:inline-flex;align-items:center;gap:4px;font-size:11px;color:var(--emerald-neon)}.hub-card-actions{display:flex;align-items:center;gap:8px}.btn-friend-add-large{display:inline-flex;align-items:center;gap:6px;background:#00f2fe26;border:1px solid var(--border-cyan);color:var(--cyan-neon);padding:7px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;transition:all .15s ease}.btn-friend-add-large:hover{background:var(--cyan-neon);color:var(--bg-deep);box-shadow:0 0 12px var(--cyan-glow)}.hub-search-box-large{display:flex;align-items:center;gap:10px;background:var(--bg-surface);border:1px solid var(--border-cyan);padding:10px 16px;border-radius:var(--radius-md);margin-bottom:12px}.hub-search-box-large input{flex:1;background:transparent;color:var(--text-main);font-size:14px}.hub-search-results-area{display:flex;flex-direction:column;gap:10px}.profile-modal-window{max-width:580px}.profile-banner-card{display:flex;align-items:center;gap:18px;padding:18px 20px;background:linear-gradient(135deg,#0891b226,#a855f71a);border:1px solid var(--border-light);border-radius:var(--radius-md);margin-bottom:16px}.profile-large-avatar{width:64px!important;height:64px!important;font-size:24px!important}.profile-username{font-family:var(--font-display);font-size:20px;font-weight:700;color:var(--text-main)}.profile-email-badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--text-muted);margin-top:3px}.profile-stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:16px}.profile-stat-box{display:flex;align-items:center;gap:12px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);padding:12px 14px}.stat-data{display:flex;flex-direction:column}.stat-number{font-size:15px;font-weight:700;color:var(--text-main);font-family:var(--font-mono)}.stat-label{font-size:11.5px;color:var(--text-dim)}.profile-key-section{background:var(--bg-surface);border:1px solid 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ease}.btn-mini-add-group:hover{background:var(--cyan-neon);color:var(--bg-deep)}.clickable-profile{cursor:pointer;border-radius:var(--radius-sm);padding:4px;transition:background .15s ease}.clickable-profile:hover{background:#ffffff0d}.crypto-modal-footer{padding:16px 22px;background:var(--bg-surface);border-top:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:flex-end;gap:12px}.btn-modal-secondary{padding:9px 18px;border-radius:var(--radius-sm);background:#ffffff14;color:var(--text-muted);font-size:13.5px;font-weight:500;border:1px solid var(--border-subtle);transition:all .2s ease;cursor:pointer}.btn-modal-secondary:hover{background:#ffffff26;color:var(--text-main);border-color:var(--border-light)}.btn-modal-primary{padding:9px 20px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--cyan-dark),#0284c7);color:#fff;font-size:13.5px;font-weight:600;border:none;box-shadow:0 4px 14px #0891b266;transition:all .2s 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ease;max-width:280px}.attachment-file-card:hover{background:var(--bg-card-hover);border-color:var(--cyan-neon)}.file-icon-badge{width:34px;height:34px;border-radius:6px;background:#0284c71f;color:var(--cyan-neon);display:flex;align-items:center;justify-content:center;flex-shrink:0}.file-info-text{flex:1;min-width:0;display:flex;flex-direction:column}.file-name-text{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text-main)}.file-size-text{font-size:11px;color:var(--text-muted)}.file-download-icon{color:var(--text-muted);flex-shrink:0}.composer-attachments-preview{padding:8px 24px;background:var(--bg-surface);border-top:1px solid var(--border-subtle);display:flex;align-items:center;gap:10px;overflow-x:auto}.preview-attachment-chip{display:inline-flex;align-items:center;gap:8px;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-full);padding:4px 10px 4px 6px;font-size:12px;color:var(--text-main);max-width:220px}.preview-mini-thumb{width:22px;height:22px;border-radius:50%;object-fit:cover}.preview-filename{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.btn-remove-attachment{width:18px;height:18px;border-radius:50%;background:#00000014;color:var(--text-muted);display:flex;align-items:center;justify-content:center;transition:all .15s ease;cursor:pointer}.btn-remove-attachment:hover{background:var(--red-dim);color:var(--red-alert)}@media (max-width: 768px){html,body{overflow-x:hidden;touch-action:pan-y}.friend-hub-main-container{padding:12px 10px 80px!important;gap:12px!important;max-width:100%!important}.friend-hub-top-card{padding:14px 12px!important;border-radius:14px!important}.friend-hub-brand-row{flex-direction:column!important;align-items:flex-start!important;gap:12px!important}.btn-create-group-hub{width:100%!important;justify-content:center!important;padding:8px 12px!important}.friend-hub-nav-tabs{padding:3px!important;gap:4px!important;overflow-x:auto!important;-webkit-overflow-scrolling:touch}.friend-hub-tab-btn{padding:6px 10px!important;font-size:12px!important;white-space:nowrap!important;flex-shrink:0}.friend-hub-content-box{padding:14px 10px!important;border-radius:14px!important}.hub-user-item-card{flex-wrap:wrap!important;gap:10px!important;padding:12px 10px!important}.hub-card-actions{width:100%!important;justify-content:flex-end!important;gap:8px!important;border-top:1px dashed var(--border-subtle);padding-top:8px;margin-top:4px}.btn-chat-with-friend,.btn-friend-accept,.btn-friend-reject,.badge-request-sent{padding:6px 12px!important;font-size:12px!important}.chat-top-header{padding:8px 10px!important}.chat-partner-name{font-size:14px!important;max-width:130px!important;overflow:hidden!important;text-overflow:ellipsis!important;white-space:nowrap!important}.chat-header-actions{gap:4px!important}.chat-btn-header-action{padding:5px 7px!important;font-size:11px!important}.chat-messages-scroll-area{padding:10px 8px!important}.chat-bubble-card{max-width:88%!important;font-size:14px!important;padding:8px 12px!important}.chat-bottom-input-bar{padding:6px 8px env(safe-area-inset-bottom,8px) 8px!important}.chat-input-textarea{font-size:15px!important;padding:8px 10px!important;min-height:38px!important}.crypto-modal-card,.profile-modal-card,.key-modal-card,.create-group-modal-card,.theme-modal-card,.backend-config-card{width:calc(100vw - 16px)!important;max-width:100%!important;max-height:90vh!important;max-height:90dvh!important;padding:16px 14px!important;margin:8px auto!important;border-radius:16px!important;overflow-y:auto!important}.auth-form-card{padding:24px 18px!important;border-radius:18px!important;width:100%!important}.auth-form-container{padding:20px 14px!important}}