:root{--bg: #f4f6fb;--surface: #ffffff;--surface-muted: #eef2ff;--text: #1f2937;--subtext: #6b7280;--primary: #0f766e;--primary-dark: #115e59;--danger: #b91c1c;--border: #e5e7eb;--shadow: 0 10px 24px rgba(15, 23, 42, .08)}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:radial-gradient(circle at top right,#dbeafe,#f4f6fb 45%,#f9fafb);color:var(--text);min-width:320px}a{color:var(--primary)}.auth-page{min-height:100vh;display:grid;grid-template-columns:1.1fr 1.05fr}.auth-left,.auth-right{padding:48px;display:flex;flex-direction:column;justify-content:center}.auth-right{position:relative;overflow:hidden;color:#fff;isolation:isolate}.auth-card{width:min(420px,100%);padding:24px;border-radius:16px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow)}.auth-right-video{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;filter:brightness(.55) saturate(1.15)}.auth-right-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 18% 20%,rgba(34,211,238,.35),transparent 42%),radial-gradient(circle at 88% 82%,rgba(59,130,246,.42),transparent 46%),linear-gradient(155deg,#0206179e,#082f4985 48%,#1e40af94);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.auth-right-aurora{position:absolute;top:-20%;right:-10%;bottom:-20%;left:-10%;background:radial-gradient(circle at 30% 40%,rgba(20,184,166,.35),transparent 40%),radial-gradient(circle at 72% 34%,rgba(147,51,234,.22),transparent 36%),radial-gradient(circle at 56% 74%,rgba(37,99,235,.32),transparent 42%);filter:blur(36px);opacity:.9;z-index:1;pointer-events:none}.auth-right-content{position:relative;z-index:2;max-width:620px;width:min(620px,100%);padding:24px;border-radius:24px;border:1px solid rgba(255,255,255,.25);background:#ffffff1a;box-shadow:0 24px 40px #02061752;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.auth-kicker{margin:0 0 10px;font-size:.84rem;letter-spacing:.16em;text-transform:uppercase;color:#e0f2fef2}.auth-right-content h2{margin:0;font-size:clamp(1.8rem,2.8vw,2.35rem);line-height:1.2}.auth-right-content h2 span{display:block;color:#bae6fd}.auth-quote{margin:14px 0 18px;font-size:1.02rem;line-height:1.6;color:#f0f9fff0;border-left:3px solid rgba(255,255,255,.6);padding-left:12px}.auth-value-grid{display:grid;gap:10px}.auth-value-card{padding:12px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.18);background:#0206174d}.auth-value-card h3{margin:0 0 4px;font-size:1rem}.auth-value-card p{margin:0;color:#e2e8f0f2;font-size:.92rem;line-height:1.4}.auth-form{display:grid;gap:12px}.auth-google-wrap{display:grid;gap:10px}.auth-divider{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;color:var(--subtext);font-size:.84rem}.auth-divider:before,.auth-divider:after{content:"";height:1px;background:var(--border)}.google-button-shell{position:relative;display:flex;justify-content:center}.google-button-shell[aria-disabled=true]{opacity:.7}.google-button-overlay{position:absolute;top:0;right:0;bottom:0;left:0;cursor:not-allowed}.auth-alt{margin-top:16px}.field{display:grid;gap:6px}.field-label{font-size:.92rem;color:var(--subtext)}.field-input,.search-input,.composer-input,.edit-input{width:100%;border-radius:10px;border:1px solid var(--border);padding:10px 12px;font:inherit}.field-input:focus,.search-input:focus,.composer-input:focus,.edit-input:focus{outline:2px solid rgba(29,78,216,.2);border-color:#93c5fd}.btn{border:0;border-radius:10px;padding:10px 14px;font:inherit;font-weight:600;cursor:pointer}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn:disabled{opacity:.6;cursor:not-allowed}.main-shell{min-height:100vh;display:grid;grid-template-rows:auto 1fr}.main-header{padding:14px 20px;display:grid;grid-template-columns:120px 1fr auto auto;gap:14px;align-items:center;border-bottom:1px solid var(--border);background:#ffffffd9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.brand{font-weight:700}.brand-link{color:inherit;text-decoration:none}.header-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}.header-mid-action{display:flex;justify-content:flex-end;min-width:0}.btn-top-create-group{padding:8px 12px}.profile-link{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:inherit}.profile-link span{max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.main-content{padding:16px 20px;min-height:0;height:calc(100vh - 72px);height:calc(100dvh - 72px);overflow:hidden}.empty-state{padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);display:grid;gap:12px;width:min(100%,560px);min-width:0}.empty-state p{margin:0}.chat-grid{display:grid;grid-template-columns:280px 1fr 260px;gap:14px;height:100%;min-height:0}.chat-grid.two-col{grid-template-columns:320px 1fr}.chat-sidebar,.chat-panel,.group-sidebar,.profile-card,.profile-form{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}.chat-sidebar,.group-sidebar{padding:12px;min-height:0;overflow:auto}.chat-tab-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}.chat-tab-btn{border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);font:inherit;font-weight:600;padding:8px 10px;cursor:pointer}.chat-tab-btn.active{border-color:#99f6e4;background:#ecfeff;color:#115e59}.chat-sidebar-title{font-weight:700;margin-bottom:10px}.chat-sidebar-top-gap{margin-top:14px}.sidebar-note{margin:8px 2px 4px;color:var(--subtext);font-size:.9rem}.chat-list{display:grid;gap:8px}.chat-list-item{width:100%;border:1px solid transparent;background:transparent;border-radius:10px;padding:8px;display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:center;text-align:left;cursor:pointer}.history-title{color:inherit;font:inherit;font-weight:600}.history-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.history-actions{display:inline-flex;align-items:center;gap:8px}.history-unread-badge{min-width:20px;height:20px;border-radius:999px;background:#0f766e;color:#fff;font-size:.72rem;display:inline-flex;align-items:center;justify-content:center;padding:0 6px;font-weight:700}.history-delete-btn{border:0;background:transparent;color:#b91c1c;font:inherit;font-size:.8rem;cursor:pointer;padding:0}.avatar-unread-wrap{position:relative;display:inline-flex}.avatar-unread-badge{position:absolute;top:-6px;right:-8px;min-width:19px;height:19px;border-radius:999px;background:#dc2626;color:#fff;border:2px solid #fff;font-size:.68rem;font-weight:700;display:inline-flex;align-items:center;justify-content:center;padding:0 5px;line-height:1}.chat-list-item:hover{background:var(--surface-muted)}.chat-list-item.active{border-color:#86efac;background:#ecfdf5}.chat-list-top{display:flex;justify-content:space-between;gap:8px;align-items:center}.chat-list-top>span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-list-top .history-title{display:block}.active-group-card{border:1px solid #c7d2fe;border-radius:10px;background:#eef2ff;padding:10px;display:grid;gap:4px;margin-bottom:10px}.chat-panel{display:grid;grid-template-rows:auto minmax(0,1fr) auto;min-height:0;height:100%;overflow:hidden}.chat-panel-head{padding:12px 14px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:12px}.chat-head-actions{display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap}.chat-panel-head h2{margin:0;font-size:clamp(1rem,2vw,1.3rem);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-empty-panel{min-height:420px;display:grid;place-items:center;text-align:center;padding:24px}.chat-empty-panel h2{margin:0;font-size:clamp(1.3rem,2.2vw,1.9rem)}.chat-empty-panel p{margin:10px 0 0;color:var(--subtext)}.panel-error,.panel-loading{margin:10px 14px 0}.panel-loading{color:var(--subtext)}.message-list-wrap{padding:14px;min-height:0;overflow-y:auto;overflow-x:hidden}.message-list{display:grid;gap:10px;align-content:start;width:100%}.message-row{display:flex;width:100%}.message-row.own{justify-content:flex-end}.message-bubble{max-width:min(62%,520px);width:fit-content;min-width:74px;background:#f3f4f6;border-radius:12px;padding:8px 10px;font-size:.92rem}.message-row.own .message-bubble{background:#dcfce7}.message-bubble p{margin:0;line-height:1.4;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}.message-sender{display:block;margin-bottom:5px;color:#0f172a;font-weight:700;font-size:.76rem}.message-type-tag{display:inline-block;margin-top:5px;padding:2px 7px;border-radius:999px;background:#e2e8f0;color:#334155;font-size:.7rem;font-weight:700}.message-meta{margin-top:8px;display:flex;gap:8px;color:var(--subtext)}.message-actions{margin-top:6px;display:flex;gap:8px}.composer{border-top:1px solid var(--border);padding:10px;display:grid;gap:8px}.media-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.media-btn{border:1px solid var(--border);background:#fff;border-radius:8px;padding:6px 10px;cursor:pointer;font-size:1rem}.media-btn:hover{background:#f8fafc}.hidden-input{display:none}.composer-row{display:grid;grid-template-columns:1fr auto;gap:8px}.composer-input{resize:none;min-height:44px;max-height:120px;overflow-y:auto}.emoji-row{display:flex;gap:8px;flex-wrap:wrap}.emoji-btn{border:1px solid var(--border);background:#fff;border-radius:8px;padding:6px 8px;cursor:pointer}.typing-indicator{margin-top:8px;color:var(--subtext);font-size:.9rem}.group-sidebar-head{display:flex;justify-content:space-between;align-items:center}.group-items{margin-top:10px;display:grid;gap:8px}.group-item{padding:8px;border-radius:8px;border:1px solid var(--border);display:flex;justify-content:space-between;gap:8px}.search-box{position:relative;width:100%;min-width:0}.search-results{position:absolute;left:0;right:0;margin-top:6px;background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);z-index:4}.search-item{padding:8px 10px;border-bottom:1px solid #f3f4f6}.search-item:last-child{border-bottom:0}.search-item-row{padding:8px 10px;border-bottom:1px solid #f3f4f6;display:flex;justify-content:space-between;align-items:center;gap:10px}.search-item-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.search-action-btn{border:1px solid var(--border);background:#fff;color:var(--primary);border-radius:8px;padding:5px 10px;cursor:pointer;font:inherit}.search-action-btn:disabled{opacity:.6;cursor:not-allowed}.search-item-btn{width:100%;text-align:left;border:0;background:#fff;font:inherit;cursor:pointer}.search-item-btn:hover{background:#f9fafb}.search-error{padding:8px 10px;color:var(--danger);font-size:.9rem}.notification-wrap{position:relative}.toast-stack{position:fixed;top:76px;right:18px;display:grid;gap:10px;z-index:20;width:min(340px,calc(100vw - 28px))}.toast-card{position:relative;border-radius:14px;border:1px solid rgba(226,232,240,.65);background:linear-gradient(165deg,#0284c7f2,#0d9488eb);color:#f8fafc;box-shadow:0 18px 30px #0f172a33;padding:13px 36px 11px 13px;animation:toast-in .24s ease-out}.toast-title{font-weight:700;font-size:.93rem;letter-spacing:.01em}.toast-body{margin:4px 0 0;font-size:.86rem;line-height:1.4;color:#f0f9fff2}.toast-close{position:absolute;top:6px;right:6px;border:0;background:transparent;color:#e2e8f0;cursor:pointer;font-size:.9rem}.notification-card{position:absolute;top:40px;right:0;width:min(340px,calc(100vw - 24px));max-height:min(70vh,520px);overflow-y:auto;background:#fffffff0;border:1px solid rgba(203,213,225,.95);border-radius:16px;box-shadow:0 18px 42px #0f172a26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:12px;z-index:5;animation:popup-fade-up .17s ease-out}.notification-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:8px;margin-bottom:8px;border-bottom:1px solid #e2e8f0}.notification-item{padding:9px 10px;border-radius:11px;border:1px solid transparent;margin-bottom:8px;background:#f8fafccc}.notification-item-btn{width:100%;border:0;background:#f8fafccc;text-align:left;cursor:pointer}.notification-item-btn:hover{border-color:#cbd5e1;background:#f8fafc}.notification-item p{margin:4px 0 0}.notification-item small{color:var(--subtext)}.request-item{padding:10px;border:1px solid #e2e8f0;border-radius:11px;background:#f8fafc;margin-bottom:8px}.request-item p{margin:0 0 8px}.request-actions{display:flex;gap:10px}.avatar{border-radius:50%;display:inline-flex;justify-content:center;align-items:center;font-weight:700;background:#dbeafe;color:#1e3a8a}.avatar-sm{width:28px;height:28px;font-size:.75rem}.avatar-md{width:36px;height:36px;font-size:.8rem}.avatar-lg{width:56px;height:56px;font-size:1rem}.badge{border-radius:99px;padding:2px 8px;font-size:.75rem}.badge-success{background:#dcfce7;color:#166534}.badge-neutral{background:#e5e7eb;color:#1f2937}.link-btn,.mini-btn,.delete-btn{border:0;background:transparent;cursor:pointer;color:var(--primary);font:inherit}.mini-btn{border:1px solid #d1d5db;border-radius:999px;padding:4px 10px;background:#fff;color:#0f766e;font-size:.84rem;font-weight:600}.mini-btn.is-open{border-color:#99f6e4;background:#ecfeff;color:#115e59}.mini-btn:focus,.link-btn:focus,.profile-link:focus{outline:none}.mini-btn:focus-visible,.link-btn:focus-visible,.profile-link:focus-visible,.chat-tab-btn:focus-visible{outline:2px solid rgba(30,64,175,.25);outline-offset:1px}.delete-btn,.link-btn.danger{color:var(--danger)}.error-text{margin:6px 0 0;color:#991b1b;background:#fef2f2;border:1px solid #fecaca;border-radius:10px;padding:8px 10px;font-size:.86rem}.popup-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:35;background:#02061780;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:grid;place-items:center;padding:16px}.popup-card{width:min(430px,100%);border-radius:18px;border:1px solid #dbeafe;background:linear-gradient(180deg,#fff,#f8fafc);box-shadow:0 28px 48px #0f172a42;padding:16px;animation:popup-fade-up .2s ease-out}.popup-card-danger{border-color:#fecaca}.popup-header{margin-bottom:10px}.popup-title{margin:0;font-size:1.08rem}.popup-subtitle{margin:7px 0 0;color:var(--subtext);font-size:.92rem}.popup-body{display:grid;gap:11px}.popup-note{margin:0;color:#334155;font-size:.93rem;line-height:1.45}.popup-label{color:#334155;font-weight:600;font-size:.9rem}.popup-input{width:100%;border-radius:11px;border:1px solid #cbd5e1;background:#fff;padding:10px 12px;font:inherit}.popup-input:focus{outline:2px solid rgba(14,116,144,.2);border-color:#67e8f9}.popup-actions{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}.btn-ghost{border:1px solid #d1d5db;background:#fff;color:#334155}.btn-ghost:hover{background:#f8fafc}.btn-danger-solid{background:#b91c1c;color:#fff}.btn-danger-solid:hover{background:#991b1b}@keyframes toast-in{0%{transform:translateY(-8px) scale(.98);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}@keyframes popup-fade-up{0%{transform:translateY(12px) scale(.98);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}.profile-page{display:grid;grid-template-columns:280px 1fr;gap:14px}.profile-card,.profile-form{padding:16px}.profile-form{display:grid;gap:12px}.readonly-field{display:grid;gap:6px}.readonly-value{border:1px solid var(--border);border-radius:10px;padding:10px 12px;background:#f9fafb}.readonly-note{color:var(--subtext)}.onboarding-page{min-height:100vh;display:grid;place-items:center;padding:24px}.onboarding-card{width:min(520px,100%);background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:24px}.onboarding-form{display:grid;gap:12px;margin-top:12px}.loader{width:14px;height:14px;border-radius:50%;border:2px solid rgba(255,255,255,.5);border-top-color:#fff;animation:spin .8s linear infinite;margin:0 auto}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1100px){.chat-grid{grid-template-columns:240px 1fr}.chat-grid.two-col{grid-template-columns:280px 1fr}.group-sidebar{display:none}}@media(max-width:800px){.auth-page{grid-template-columns:1fr}.auth-left{padding:24px 18px}.auth-card{padding:20px}.auth-right{display:none}.main-header{grid-template-columns:1fr;gap:10px;padding:12px}.header-mid-action{justify-content:flex-start}.header-actions{justify-content:flex-start;display:flex;flex-wrap:nowrap;gap:7px;width:100%;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}.header-actions::-webkit-scrollbar{display:none}.header-actions>*{min-width:0;flex:0 0 auto}.header-mid-action .btn-top-create-group{width:100%}.header-actions .mini-btn,.header-actions .link-btn,.header-actions .profile-link{display:inline-flex;justify-content:center;align-items:center;width:auto;min-width:max-content;min-height:36px;border:1px solid var(--border);border-radius:999px;background:#fff;font-size:.84rem;padding:7px 10px;line-height:1.1;text-decoration:none}.header-actions .profile-link{gap:6px}.header-actions .profile-link .avatar{flex-shrink:0}.header-actions .profile-link span{max-width:70px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.header-actions .mini-btn.is-open{border-color:#99f6e4;background:#ecfeff}.chat-grid,.chat-grid.two-col,.profile-page{grid-template-columns:1fr;gap:10px}.chat-sidebar{max-height:none;overflow:visible;order:2}.chat-panel{min-height:56vh;min-height:56dvh;height:min(72vh,72dvh);max-height:min(72vh,72dvh);overflow:hidden;order:1}.chat-panel-head{align-items:flex-start;flex-wrap:wrap;gap:8px}.chat-panel-head h2{white-space:normal;text-overflow:unset}.chat-head-actions{justify-content:flex-start}.message-bubble{max-width:min(90%,380px)}.main-content{padding:12px;height:auto;min-height:calc(100vh - 116px);min-height:calc(100dvh - 116px);overflow:auto}.header-actions{gap:8px}.chat-list-top{align-items:flex-start}.chat-list-top>span{white-space:normal}.chat-empty-panel{min-height:0;height:100%}.message-list-wrap{overscroll-behavior:contain}.notification-card{position:fixed;top:64px;left:12px;right:12px;width:auto}.toast-stack{top:74px;bottom:auto;left:14px;right:14px;width:auto}}@media(max-width:640px){.auth-left{padding:18px 14px}.auth-card,.onboarding-card{padding:18px}.main-content{padding:10px;height:auto;min-height:calc(100vh - 128px);min-height:calc(100dvh - 128px)}.chat-panel{height:min(70vh,70dvh);max-height:min(70vh,70dvh)}.composer-row{grid-template-columns:1fr}.composer-row .btn{width:100%}.search-results{position:static;margin-top:8px}}@media(max-width:480px){.auth-left{padding:14px 12px}.auth-card{padding:16px}.main-header{padding:10px}.header-actions .profile-link span{display:inline;max-width:56px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.78rem}.main-content{padding:8px;min-height:calc(100vh - 128px);min-height:calc(100dvh - 128px)}.chat-panel{height:min(68vh,68dvh);max-height:min(68vh,68dvh)}.chat-sidebar{padding:10px}.chat-empty-panel{min-height:280px;padding:16px}.message-list-wrap{padding:10px}.message-bubble{max-width:92%;min-width:0}.notification-card{left:8px;right:8px}.toast-stack{left:8px;right:8px;top:70px;bottom:auto}.request-actions{flex-wrap:wrap}}