:root{color-scheme:dark;--bg:#07111f;--panel:#0d1b2b;--panel2:#102338;--line:#203a51;--text:#f5f8fb;--muted:#91a4b7;--brand:#2dd4bf;--brand2:#22a4e6;--danger:#ff7187;--shadow:0 24px 70px #0007;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text)}body{min-height:100dvh;background:radial-gradient(circle at 12% 8%,#123a4e 0,transparent 34%),radial-gradient(circle at 90% 80%,#0d344a 0,transparent 32%),linear-gradient(155deg,#07111f,#081725 58%,#061019)}button,input{font:inherit}button{cursor:pointer}.hidden{display:none!important}
.login-shell{min-height:100dvh;display:grid;align-items:center;padding:calc(24px + env(safe-area-inset-top)) 20px calc(24px + env(safe-area-inset-bottom))}.login-card{width:min(100%,420px);margin:auto;padding:34px 26px 28px;border:1px solid #2b485e;background:#0b1929e8;border-radius:28px;box-shadow:var(--shadow);backdrop-filter:blur(20px)}.mark{width:58px;height:58px;display:grid;place-items:center;margin-bottom:28px;border-radius:18px;color:#06201d;background:linear-gradient(145deg,#5eead4,#22a4e6);font-weight:900;font-size:1.2rem;box-shadow:0 14px 40px #2dd4bf35}.login-card h1{font-size:2rem;letter-spacing:.04em;margin:0 0 8px}.login-card>p{color:var(--muted);margin:0 0 32px;line-height:1.6}.field{display:grid;gap:8px;margin:0 0 17px}.field span{font-size:.9rem;color:#b7c6d4}.field input{width:100%;border:1px solid #2a4358;border-radius:14px;padding:14px 15px;color:var(--text);background:#07121f;outline:0;font-size:1rem}.field input:focus{border-color:var(--brand);box-shadow:0 0 0 3px #2dd4bf1f}.primary,.ghost,.icon-btn,.danger{border:0;border-radius:14px;min-height:46px;padding:0 18px;font-weight:700}.primary{width:100%;color:#041a19;background:linear-gradient(135deg,#5eead4,#28b9dc);box-shadow:0 12px 30px #2dd4bf2b}.primary:disabled{opacity:.55}.error{min-height:22px;color:#ff9bab;font-size:.9rem;margin:2px 0 12px}
.admin{width:min(100%,880px);margin:auto;padding:max(18px,env(safe-area-inset-top)) 16px calc(40px + env(safe-area-inset-bottom))}.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}.topbar h1{font-size:1.35rem;margin:0}.topbar p{margin:4px 0 0;color:var(--muted);font-size:.86rem}.ghost,.icon-btn{color:#dbe7ef;background:#11263a;border:1px solid #29465c}.admin-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);gap:18px}.card{border:1px solid #203b51;border-radius:22px;background:#0b1928e8;box-shadow:0 15px 45px #0003;padding:20px}.card h2{font-size:1.08rem;margin:0 0 6px}.card .intro{margin:0 0 22px;color:var(--muted);font-size:.88rem;line-height:1.55}.pair-form{display:grid;grid-template-columns:1fr 1fr;gap:12px}.account-box{padding:14px;border-radius:17px;background:#071320;border:1px solid #1d374d}.account-box strong{display:block;margin-bottom:13px;font-size:.9rem;color:#9fdcd4}.pair-form .field{margin-bottom:12px}.pair-form .field input{padding:12px;font-size:.94rem}.pair-form .primary{grid-column:1/-1;margin-top:3px}.group-list{display:grid;gap:10px;margin-top:18px}.empty{padding:40px 14px;text-align:center;border:1px dashed #2b4659;border-radius:16px;color:var(--muted)}.group{display:flex;gap:12px;align-items:center;padding:14px;border:1px solid #203b50;border-radius:16px;background:#091625}.group-avatars{display:flex}.avatar{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;font-weight:800;background:linear-gradient(145deg,#245269,#16354d);border:2px solid #091625}.avatar+.avatar{margin-left:-9px;background:linear-gradient(145deg,#2b6260,#174642)}.group-main{min-width:0;flex:1}.group-names{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.group-meta{font-size:.77rem;color:var(--muted);margin-top:4px}.delete{width:38px;height:38px;padding:0;border-radius:12px;color:#ff9daf;background:#351624;border:1px solid #6d2a3c}
.chat{height:100dvh;display:grid;grid-template-rows:auto 1fr auto;max-width:760px;margin:auto;background:#081521;box-shadow:0 0 80px #0008}.chat-head{padding:calc(12px + env(safe-area-inset-top)) 16px 12px;display:flex;align-items:center;gap:12px;border-bottom:1px solid #1d3447;background:#0a1826e8;backdrop-filter:blur(18px);z-index:2}.chat-head .avatar{width:43px;height:43px;border:0;background:linear-gradient(145deg,#43dbc6,#238bbd);color:#061a1c}.chat-title{flex:1;min-width:0}.chat-title strong{display:block}.chat-title span{display:block;color:#7f96a9;font-size:.76rem;margin-top:3px}.chat-head .icon-btn{padding:0;width:43px;height:43px;font-size:1.1rem}.messages{overflow-y:auto;padding:18px 13px 26px;overscroll-behavior:contain;scroll-behavior:smooth}.welcome{text-align:center;color:var(--muted);font-size:.82rem;padding:22px 12px 28px}.row{display:flex;margin:7px 0;align-items:flex-end;gap:7px}.row.mine{justify-content:flex-end}.bubble{max-width:min(78%,520px);border-radius:18px 18px 18px 5px;padding:10px 13px;background:#13283b;color:#f0f6fa;line-height:1.55;word-break:break-word;box-shadow:0 6px 20px #0002}.mine .bubble{border-radius:18px 18px 5px 18px;color:#05201d;background:linear-gradient(145deg,#5eead4,#38c8c4)}.time{color:#70879b;font-size:.67rem;white-space:nowrap;margin-bottom:2px}.media-bubble{padding:4px;background:#13283b}.mine .media-bubble{background:#2dbdac}.media-bubble img{display:block;max-width:100%;max-height:390px;border-radius:14px;object-fit:contain}.media-bubble audio{display:block;width:min(255px,62vw);height:42px}.composer{position:relative;padding:10px 10px calc(10px + env(safe-area-inset-bottom));border-top:1px solid #1b3447;background:#0a1826ed;backdrop-filter:blur(18px)}.compose-row{display:flex;align-items:flex-end;gap:7px}.compose-input{min-height:44px;max-height:110px;min-width:72px;flex:1;resize:none;border-radius:17px;border:1px solid #29465b;background:#07131f;color:var(--text);outline:0;padding:11px 13px;line-height:1.35;font:inherit}.compose-input:focus{border-color:#35cdbb}.round{width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;border-radius:15px;border:1px solid #29465b;background:#11263a;color:#dce9f1;font-size:1.12rem}.emoji-toggle{font-size:1.35rem}.emoji-toggle.active{color:#06201d;background:#58ddca;border-color:#58ddca}.emoji-panel{position:absolute;z-index:5;left:10px;right:10px;bottom:calc(100% + 8px);display:grid;grid-template-columns:repeat(8,1fr);gap:4px;max-height:214px;overflow-y:auto;padding:10px;border:1px solid #29465b;border-radius:20px;background:#0d1d2ceF;box-shadow:0 18px 55px #000a;backdrop-filter:blur(20px)}.emoji{display:grid;place-items:center;min-width:0;height:40px;padding:0;border:0;border-radius:11px;background:transparent;font-size:1.45rem}.emoji:active,.emoji:focus-visible{background:#244158;outline:0}.send{border:0;color:#061c1a;background:linear-gradient(145deg,#5eead4,#31b9d1)}.recording{color:white!important;background:#d94b68!important;border-color:#f1768f!important;animation:pulse 1.2s infinite}.uploading{padding:7px 5px 0;color:#8fa5b8;font-size:.75rem}.toast{position:fixed;z-index:20;left:50%;bottom:calc(86px + env(safe-area-inset-bottom));transform:translate(-50%,18px);opacity:0;pointer-events:none;max-width:calc(100vw - 36px);padding:10px 14px;border-radius:12px;background:#eaf8f6;color:#09201f;font-size:.88rem;font-weight:650;box-shadow:0 15px 45px #0008;transition:.22s}.toast.show{opacity:1;transform:translate(-50%,0)}@keyframes pulse{50%{box-shadow:0 0 0 7px #e8567130}}
@media(max-width:700px){.admin-grid{grid-template-columns:1fr}.admin{padding-left:12px;padding-right:12px}.card{padding:17px}.pair-form{grid-template-columns:1fr}.chat{width:100%}}@media(max-width:420px){.compose-row{gap:5px}.round{width:41px;height:41px;flex-basis:41px;border-radius:14px}.compose-input{min-height:41px;padding:9px 11px}.emoji-panel{grid-template-columns:repeat(7,1fr)}}@media(max-width:390px){.pair-form{grid-template-columns:1fr}.login-card{padding:28px 20px 24px}.bubble{max-width:82%}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.recording{animation:none}}
.voice-bubble{padding:7px}.voice-transcript{margin:7px 5px 3px;padding-top:7px;border-top:1px solid #ffffff20;color:#e6f1f7;font-size:.88rem;line-height:1.45;word-break:break-word}.mine .voice-transcript{border-top-color:#07382e2b;color:#07382e}.voice-transcript span{opacity:.62}
.message-meta{display:grid;gap:2px;color:#70879b;font-size:.67rem;line-height:1.15;text-align:right;white-space:nowrap;margin-bottom:2px}.receipt{color:#70879b}.receipt.read{color:#40d7c3}
.image-download{position:relative;display:block;color:white;text-decoration:none;border-radius:14px;overflow:hidden}.image-download span{position:absolute;right:8px;bottom:8px;padding:5px 8px;border-radius:9px;background:#07131fbd;color:#f1f8fb;font-size:.72rem;line-height:1;backdrop-filter:blur(8px)}
.avatar img{display:block;width:100%;height:100%;object-fit:cover;border-radius:inherit}.profile-trigger{position:relative;padding:0;color:#061a1c;overflow:visible}.profile-trigger i{position:absolute;right:-4px;bottom:-3px;width:18px;height:18px;display:grid;place-items:center;border:2px solid #0a1826;border-radius:50%;background:#f3fbfa;color:#0b6257;font:800 .66rem/1 sans-serif}.profile-modal{position:fixed;z-index:30;inset:0;display:grid;place-items:center;padding:20px;background:#020912bf;backdrop-filter:blur(10px)}.profile-dialog{width:min(100%,390px);padding:22px;border:1px solid #29465b;border-radius:24px;background:#0c1b2b;box-shadow:0 28px 90px #000b}.profile-title{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:22px}.profile-title strong{display:block;font-size:1.2rem}.profile-title span{display:block;margin-top:5px;color:var(--muted);font-size:.8rem}.modal-close{width:36px;height:36px;padding:0;border:1px solid #29465b;border-radius:12px;background:#11263a;color:#dbe7ef;font-size:1.4rem}.profile-avatar{position:relative;width:96px;height:96px;display:grid;place-items:center;margin:0 auto 24px;border:3px solid #43d8c5;border-radius:50%;background:linear-gradient(145deg,#43dbc6,#238bbd);color:#061a1c;font-size:2rem;font-weight:800;cursor:pointer;box-shadow:0 14px 40px #2dd4bf2b}.profile-avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}.profile-avatar>span{position:absolute;left:50%;bottom:-12px;transform:translateX(-50%);padding:5px 9px;border-radius:9px;background:#152c40;color:#dcecf4;font-size:.72rem;white-space:nowrap;border:1px solid #315168}.profile-dialog .primary{margin-top:4px}
@media(max-width:520px){.profile-modal{align-items:end;padding:0}.profile-dialog{width:100%;border-radius:24px 24px 0 0;padding:22px 20px calc(22px + env(safe-area-inset-bottom))}}