:root{--bg:#f4f6fa;--panel:#fff;--ink:#18202d;--muted:#788396;--line:#e5e9f0;--accent:#5b5ce2;--accent-soft:#efefff;--danger:#d94b5b;--shadow:0 18px 50px rgba(31,40,60,.09)}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}.hidden{display:none!important}.muted{color:var(--muted)}
.app-shell{height:100vh;display:grid;grid-template-columns:250px 390px minmax(420px,1fr);overflow:hidden}.sidebar,.ticket-column,.chat-panel{min-width:0;background:var(--panel);border-right:1px solid var(--line)}
.sidebar{background:#171b29;color:#f6f7fb;padding:22px 14px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:11px;padding:0 8px 25px;font-size:17px}.brand-mark{width:52px;height:52px;border-radius:17px;display:grid;place-items:center;background:linear-gradient(145deg,#7778ff,#4546c9);color:#fff;font-size:27px;font-weight:800;box-shadow:0 10px 25px rgba(91,92,226,.3)}.brand-mark.small{width:35px;height:35px;border-radius:11px;font-size:18px}.sidebar nav{display:grid;gap:6px}.nav-item{border:0;color:#aeb5c6;background:transparent;text-align:left;border-radius:11px;padding:12px;display:flex;gap:8px;justify-content:space-between;align-items:center;transition:.18s}.nav-item:hover,.nav-item.active{color:#fff;background:#292f43}.badge{min-width:23px;padding:2px 6px;border-radius:20px;background:var(--accent);color:#fff;text-align:center;font-size:12px}.badge.zero{background:#363c4e;color:#8e97aa}.account{margin-top:auto;padding:16px 7px 0;border-top:1px solid #2e3446;display:flex;align-items:center;gap:7px}.account>div{display:grid;margin-right:auto}.account small{color:#8992a5;margin-top:3px}.account form{display:flex}.icon-btn{border:0;background:transparent;color:inherit;padding:7px;border-radius:8px;font-size:18px}.icon-btn:hover{background:rgba(255,255,255,.08)}
.ticket-column{display:flex;flex-direction:column}.column-header,.chat-header{height:79px;padding:17px 20px;display:flex;align-items:center;border-bottom:1px solid var(--line)}.column-header h1,.chat-header h2{font-size:19px;margin:0 0 4px}.column-header p,.chat-header p{font-size:13px;color:var(--muted);margin:0}.column-header .icon-btn{display:none;margin-left:auto}.ticket-list{overflow-y:auto;padding:9px;flex:1}.ticket-card{display:block;width:100%;border:1px solid transparent;background:#fff;border-radius:13px;padding:13px;text-align:left;margin-bottom:5px;color:var(--ink)}.ticket-card:hover{background:#f8f9fc}.ticket-card.selected{background:var(--accent-soft);border-color:#d8d8ff}.ticket-top,.ticket-meta,.ticket-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px}.ticket-top strong{font-size:14px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.ticket-top time{color:var(--muted);font-size:11px;white-space:nowrap}.ticket-meta{color:var(--muted);font-size:12px;margin:8px 0}.ticket-meta span{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.ticket-bottom{color:#929bad;font-size:11px}.unread{margin-left:auto;background:var(--accent);color:#fff;min-width:21px;height:21px;padding:2px 6px;border-radius:20px;display:grid;place-items:center}.rating{color:#db9718!important}.empty{padding:45px 20px;text-align:center;color:var(--muted)}.error-text{color:var(--danger)}
.filters{padding:10px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:7px}.filters input,.filters select{min-width:0;border:1px solid var(--line);border-radius:8px;padding:8px;font-size:12px;background:#fff}.filters #search{grid-column:1/-1}
.chat-panel{border-right:0;display:flex;flex-direction:column;background:#f8f9fc}.empty-panel{display:grid;place-items:center}.welcome{text-align:center;color:var(--muted);max-width:330px}.welcome h2{color:var(--ink);margin:15px 0 6px}.welcome p{margin:0;line-height:1.5}.welcome-icon{font-size:35px}.chat-header{background:#fff}.back-btn{display:none;border:0;background:transparent;font-size:22px;margin-right:8px}.header-actions{margin-left:auto}.danger-btn{border:1px solid #f0c6cb;color:var(--danger);background:#fff5f6;border-radius:9px;padding:9px 12px}.status{padding:6px 10px;border-radius:15px;font-size:12px}.status.closed{background:#e8ebf0;color:#687285}.user-info{display:flex;gap:27px;overflow-x:auto;background:#fff;padding:13px 21px;border-bottom:1px solid var(--line)}.user-info>div{display:grid;flex:0 0 auto}.user-info small{font-size:10px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:4px}.user-info strong{font-size:12px}.messages{flex:1;overflow-y:auto;padding:24px 5%;scroll-behavior:smooth}.message{display:flex;margin:8px 0}.message>div{max-width:min(72%,680px);padding:10px 13px;border-radius:14px;background:#fff;box-shadow:0 2px 8px rgba(32,40,60,.05)}.message.manager{justify-content:flex-end}.message.manager>div{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.message.user>div{border-bottom-left-radius:4px}.message p{margin:0;line-height:1.45;overflow-wrap:anywhere}.message time{font-size:9px;opacity:.65;display:block;text-align:right;margin-top:5px}.attachment{display:block;color:inherit;margin:4px 0}.chat-photo{max-width:280px;max-height:260px;border-radius:9px;display:block}.reply-form{padding:12px 18px 18px;display:flex;gap:10px;align-items:flex-end}.reply-form textarea{flex:1;resize:none;max-height:140px;border:1px solid var(--line);border-radius:14px;padding:12px 14px;outline:none;box-shadow:0 4px 20px rgba(32,40,60,.05)}.reply-form textarea:focus{border-color:#b9b9fb}.send-btn{width:43px;height:43px;border:0;border-radius:13px;background:var(--accent);color:#fff;font-size:18px}.readonly-note{text-align:center;padding:17px;color:var(--muted);font-size:13px}
.toast{position:fixed;right:22px;top:22px;z-index:20;background:#202638;color:#fff;padding:13px 18px;border-radius:11px;box-shadow:var(--shadow);animation:slide .22s}.toast.danger{background:var(--danger)}@keyframes slide{from{transform:translateY(-12px);opacity:0}}
.login-page{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 15% 10%,#eeeeff,transparent 35%),var(--bg)}.login-card{width:min(410px,calc(100% - 30px));padding:38px;background:#fff;border-radius:22px;box-shadow:var(--shadow)}.login-card .brand-mark{margin-bottom:22px}.login-card h1{margin:0;font-size:27px}.login-card>p{margin:7px 0 25px}.login-form,.login-form label,#admin-form,#admin-form label{display:grid;gap:8px}.login-form{gap:17px}.login-form input,#admin-form input,#admin-form select{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px;outline:none}.primary{border:0;border-radius:10px;padding:12px;background:var(--accent);color:#fff;font-weight:650}.error-banner{background:#fff0f2;color:var(--danger);padding:10px;border-radius:9px;margin-bottom:15px}
dialog{border:0;border-radius:17px;padding:0;box-shadow:var(--shadow);width:min(400px,calc(100% - 30px))}dialog::backdrop{background:rgba(15,19,28,.5)}#admin-form{padding:25px;gap:15px}#admin-form h2{margin:0}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:5px}.dialog-actions button{border:1px solid var(--line);border-radius:9px;padding:9px 14px;background:#fff}.dialog-actions .primary{background:var(--accent)}
@media(max-width:1050px){.app-shell{grid-template-columns:215px 340px minmax(380px,1fr)}}
@media(max-width:780px){.app-shell{grid-template-columns:82px 1fr}.sidebar{padding:18px 9px}.brand strong,.nav-item span:first-child,.account>div{display:none}.brand{justify-content:center;padding:0 0 20px}.nav-item{justify-content:center;min-height:43px}.nav-item:before{content:"•";font-size:22px}.account{justify-content:center;flex-wrap:wrap}.chat-panel{position:fixed;inset:0;z-index:5;transform:translateX(100%);transition:.22s}.chat-open .chat-panel{transform:translateX(0)}.back-btn{display:block}}
@media(max-width:520px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;z-index:10;inset:0 auto 0 0;width:250px;transform:translateX(-100%);transition:.2s}.menu-open .sidebar{transform:translateX(0)}.sidebar .brand strong,.sidebar .nav-item span:first-child,.sidebar .account>div{display:initial}.sidebar .nav-item{justify-content:space-between}.sidebar .nav-item:before{display:none}.column-header .icon-btn{display:block}.ticket-column{grid-column:1}.user-info{gap:18px}.message>div{max-width:88%}.chat-header{padding:14px}.danger-btn{font-size:12px;padding:8px}.filters{grid-template-columns:1fr}.filters #search{grid-column:auto}}