:root{
  --bg:#f4f7fb;
  --card:#ffffffcc;
  --border:#dde6f2;
  --text:#183153;
  --muted:#6f7b8d;
  --accent:#4966f3;
  --accent-2:#7c3aed;
  --green:#16a34a;
  --red:#dc2626;
  --badge:#ef4444;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:linear-gradient(135deg,#eef3ff,#f9fbff 40%,#f4f0ff);color:var(--text);overflow:hidden}
a{text-decoration:none;color:inherit}
.flash-wrap{padding:12px 18px}.flash{background:#fff7d6;border:1px solid #f7df83;padding:10px 14px;border-radius:12px;margin-bottom:8px}
.login-shell{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{width:min(420px,92vw);padding:28px;border-radius:24px;background:var(--card);backdrop-filter:blur(12px);border:1px solid var(--border);box-shadow:0 20px 55px rgba(48,75,124,.12)}
.brand{font-size:32px;font-weight:800;margin-bottom:6px}.subtitle{color:var(--muted);margin-bottom:18px}
.login-form,.stack-form{display:flex;flex-direction:column;gap:10px}
input,textarea,select,button{font:inherit}
input,textarea,select{width:100%;padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:white;outline:none}
textarea{resize:vertical;min-height:104px}
button{border:none;border-radius:14px;padding:12px 16px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:white;font-weight:700;cursor:pointer}
button.ghost,.ghost{background:white;color:var(--text);border:1px solid var(--border);padding:10px 14px;border-radius:12px}
button.mini{padding:6px 10px;border-radius:10px;font-size:12px}
button.small,.small{padding:9px 12px;border-radius:12px;font-size:13px}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:16px 22px;min-height:72px}.muted{color:var(--muted)}.top-actions{display:flex;gap:10px}
.app-grid{display:grid;grid-template-columns:310px minmax(620px,1fr) 300px;gap:18px;padding:0 18px 18px;height:calc(100vh - 72px);overflow:hidden}
.admin-grid{display:grid;grid-template-columns:repeat(3,minmax(250px,1fr));gap:18px;padding:0 18px 18px}
.glass{background:var(--card);border:1px solid var(--border);backdrop-filter:blur(10px);box-shadow:0 18px 50px rgba(70,89,140,.10);border-radius:24px}
.glass-soft{background:linear-gradient(135deg,rgba(255,255,255,.95),rgba(246,242,255,.96));border:1px solid var(--border);border-radius:20px}
.sidebar,.profile-panel{padding:18px;overflow:auto;min-height:0}.chat-panel{padding:18px;display:flex;flex-direction:column;position:relative;overflow:hidden;min-height:0}
.section-title{font-weight:800;margin:16px 4px 10px}.row-between{display:flex;justify-content:space-between;align-items:center}.row-left{display:flex;align-items:center;gap:10px}
.nav-item{width:100%;display:flex;justify-content:space-between;align-items:center;padding:14px 14px;margin-bottom:10px;border:none;background:#fff;border:1px solid var(--border);border-radius:16px;color:var(--text);cursor:pointer}
.nav-item.active{background:linear-gradient(135deg,#eef3ff,#f7f1ff);border-color:#c9d6ff}.badge{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:26px;padding:0 8px;background:var(--badge);color:white;border-radius:999px;font-size:13px;font-weight:800}
.dot{display:inline-block;width:10px;height:10px;border-radius:999px}.online{background:var(--green)}.offline{background:var(--red)}
.chat-header{display:flex;justify-content:space-between;align-items:center;padding:2px 6px 12px}.chat-header h1{margin:0;font-size:36px}
.messages{flex:1;overflow:auto;padding:8px 6px 16px;display:flex;flex-direction:column;gap:12px;min-height:0;border-bottom:1px solid var(--border);scroll-behavior:smooth}
.msg{max-width:80%;background:#fff;border:1px solid var(--border);border-radius:18px;padding:12px 14px;box-shadow:0 8px 24px rgba(20,40,70,.05)}
.msg.mine{align-self:flex-end;background:linear-gradient(135deg,#eef3ff,#f9f5ff)}
.msg-meta{display:flex;gap:12px;justify-content:space-between;color:var(--muted);font-size:12px;margin-bottom:6px}.msg-body{font-size:17px;line-height:1.45;margin-bottom:10px}
.composer{display:grid;grid-template-columns:1fr 140px;gap:12px;align-items:end;padding-top:14px;flex:0 0 auto}
.composer-main{display:flex;flex-direction:column;gap:10px}
.composer-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.small-text{font-size:12px}
.hint{margin-top:14px;color:var(--muted);font-size:14px;line-height:1.4}
.card{padding:18px}.table-wrap{margin:0 18px 18px;overflow:auto}table{width:100%;border-collapse:collapse}th,td{padding:10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}.inline-form{display:flex;gap:8px;align-items:center}
.modal{border:none;border-radius:20px;padding:0;max-width:460px;width:92vw}.modal-form{padding:18px}.member-list{max-height:240px;overflow:auto;border:1px solid var(--border);padding:10px;border-radius:14px;display:grid;gap:8px;background:#fff}
.pulse{animation:pulseGlow 1s infinite}
@keyframes pulseGlow{0%{box-shadow:0 0 0 0 rgba(73,102,243,.35)}50%{box-shadow:0 0 0 10px rgba(73,102,243,0);background:#fff7d6}100%{box-shadow:0 0 0 0 rgba(73,102,243,0)}}

.attachment-card{display:flex;flex-direction:column;gap:10px;background:#f8fbff;border:1px solid #d8e5fb;border-radius:16px;padding:10px 12px}
.attachment-preview{border-radius:14px;overflow:hidden;background:#eef4ff;max-width:260px}
.attachment-preview img{display:block;max-width:100%;height:auto}
.attachment-file{display:flex;align-items:center;gap:10px}
.file-icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#edf2ff,#f5f0ff);font-size:20px}
.file-name{font-weight:700;word-break:break-word}
.attachment-actions{display:flex;gap:8px;flex-wrap:wrap}
.file-btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 12px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--text);font-weight:700;cursor:pointer}

.drop-hint{position:absolute;inset:86px 22px 118px 22px;border:2px dashed #9fb4ff;background:rgba(255,255,255,.82);backdrop-filter:blur(6px);border-radius:22px;display:none;align-items:center;justify-content:center;font-size:22px;font-weight:800;color:#35519b;z-index:5}
.drop-hint.show{display:flex}

.oa-inside{margin-top:18px;padding:14px;display:flex;align-items:center;gap:14px}
.oa-logo.inside{width:126px;height:auto;display:block}
.oa-copy{display:flex;flex-direction:column;gap:4px}
.oa-copy-title{font-size:14px;font-weight:700;color:#223a5f;letter-spacing:.1px;line-height:1.4}
.oa-copy-sub{font-size:12px;color:var(--muted);letter-spacing:.2px}

@media (max-width:1200px){body{overflow:auto}.app-grid{grid-template-columns:280px 1fr;height:auto;min-height:calc(100vh - 72px);overflow:visible}.profile-panel{display:none}.admin-grid{grid-template-columns:1fr}}
@media (max-width:840px){body{overflow:auto}.app-grid{grid-template-columns:1fr;height:auto;overflow:visible}.sidebar{order:2}.chat-panel{order:1;min-height:70vh}.composer{grid-template-columns:1fr}.drop-hint{inset:76px 12px 150px 12px}}

.name-label{transition:all .25s ease}
.pulse-name{animation:nameBlink .9s infinite;color:#6d28d9;font-weight:800}
@keyframes nameBlink{0%{opacity:1}50%{opacity:.35}100%{opacity:1}}
.compact-window{max-width:290px;border-radius:18px;background:linear-gradient(180deg,#fbfdff,#eef4ff);box-shadow:0 10px 24px rgba(46,75,140,.10)}
.attachment-preview.frame{padding:8px;background:linear-gradient(180deg,#eef4ff,#ffffff);border:1px solid #d6e2fb;box-shadow:inset 0 1px 0 rgba(255,255,255,.65)}
.attachment-preview.frame img{border-radius:12px}
.oa-logo.inside.modern-only{width:72px;height:72px}
.oa-inside{justify-content:center;align-items:center;flex-direction:column;text-align:center}
.oa-copy-title,.oa-copy-sub{max-width:210px}

.notify-box{margin-top:18px;padding:14px;display:flex;flex-direction:column;gap:10px}
.notify-title{font-size:14px;font-weight:800;color:#223a5f}
.notify-actions{display:flex;gap:8px;flex-wrap:wrap}


body.admin_panel{overflow:auto;min-height:100vh}
body.admin_panel .admin-grid{grid-template-columns:repeat(3,minmax(260px,1fr));padding-bottom:18px}
body.admin_panel .table-wrap{max-height:none;overflow:visible}
body.admin_panel .card.table-wrap{margin-bottom:18px}
body.admin_panel .flash-wrap{position:sticky;top:0;z-index:30}
body.admin_panel table{background:transparent}
body.admin_panel .inline-form{flex-wrap:wrap}
body.admin_panel .inline-form input{min-width:180px;flex:1}
.admin-footer-wrap{margin-bottom:24px}
@media (max-width:1100px){
  body.admin_panel .admin-grid{grid-template-columns:1fr;}
}


.toast-container{position:fixed;top:18px;right:18px;z-index:9999;display:flex;flex-direction:column;gap:12px;pointer-events:none}
.toast-notice{min-width:310px;max-width:360px;padding:14px 16px;border-radius:18px;background:linear-gradient(135deg,rgba(31,41,89,.96),rgba(86,58,203,.96));color:#fff;box-shadow:0 18px 42px rgba(44,54,114,.30);display:flex;align-items:flex-start;gap:12px;opacity:0;transform:translateY(-10px) scale(.98);transition:all .25s ease}
.toast-notice.show{opacity:1;transform:translateY(0) scale(1)}
.toast-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:rgba(255,255,255,.14);font-size:18px;flex:0 0 auto}
.toast-copy{display:flex;flex-direction:column;gap:4px}
.toast-title{font-weight:800;font-size:14px;letter-spacing:.1px}
.toast-body{font-size:13px;line-height:1.45;color:rgba(255,255,255,.92)}
@media (max-width:840px){.toast-container{left:12px;right:12px;top:12px}.toast-notice{min-width:0;max-width:none;width:100%}}