:root{font-family:"Segoe UI",Tahoma,Arial,sans-serif;color:#202b36;background:#e9edf2;font-size:14px}
*{box-sizing:border-box}body{margin:0;min-height:100vh}.topbar{height:52px;background:#258dbb;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:3px solid #1c7eac}.brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:600}.brand-mark{width:25px;height:25px;background:#477da5;display:grid;place-items:center;font-weight:700}.topbar-right{display:flex;align-items:center;gap:18px;color:#d8e1e9;font-size:12px}.server-label{border-left:1px solid #52616e;padding-left:18px;letter-spacing:.7px}.shell{display:flex;min-height:calc(100vh - 82px)}.sidebar{width:238px;background:#dce3e9;border-right:1px solid #b9c4ce;display:flex;flex-direction:column;padding:14px 9px}.side-heading{font-size:10px;letter-spacing:1px;color:#667684;font-weight:700;padding:15px 10px 7px}.nav-item{border:1px solid transparent;background:transparent;color:#263746;text-align:left;padding:10px 11px;width:100%;cursor:pointer;font:inherit;font-size:13px}.nav-item:hover{background:#edf2f6;border-color:#c5d0d9}.nav-item.active{background:#c5d8e7;border-color:#9eb7ca;color:#183e5a;font-weight:600}.nav-item.planned{color:#52616e}.sidebar-bottom{margin-top:auto;border-top:1px solid #c2ccd5;padding-top:9px}.logout{color:#8a3434}.main{flex:1;min-width:0;padding:24px 30px 42px;max-width:1500px;margin:0 auto;width:100%}.page-head{display:flex;justify-content:space-between;align-items:flex-end;border-bottom:1px solid #c7d0d8;padding-bottom:14px;margin-bottom:20px}.crumb{font-size:10px;letter-spacing:1px;color:#778692;margin-bottom:6px}.crumb span{color:#477da5}.page-head h1{font-size:24px;font-weight:400;margin:0;color:#263746}.page-user{font-size:12px;color:#60717e}.section-title{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #bfcbd4;padding:0 0 9px;margin:18px 0 12px;font-weight:600;color:#33495a}.muted{font-size:10px;letter-spacing:1px;color:#84919b}.machine-grid{display:grid;grid-template-columns:repeat(3,minmax(180px,1fr));gap:10px}.machine-card{background:#f8fafb;border:1px solid #c6d0d8;min-height:86px;padding:12px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px}.machine-name{font-weight:600}.machine-model{font-size:12px;color:#71808c;margin-top:4px}.status{font-size:11px;font-weight:600;padding:5px 8px;border:1px solid}.status.working{color:#28623b;background:#e7f1e9;border-color:#b7d0be}.status.down{color:#963a35;background:#f7e9e8;border-color:#e0b8b5}.empty{padding:20px;background:#f7f9fa;border:1px solid #d0d8de;color:#71808c;text-align:center}.chat-preview{border:1px solid #c6d0d8;background:#f8fafb}.chat-preview-row{padding:9px 12px;border-bottom:1px solid #e0e5e9;display:flex;gap:12px}.chat-preview-row:last-child{border-bottom:0}.chat-author{font-weight:600;min-width:130px;color:#405a6d}.chat-text{flex:1;overflow-wrap:anywhere}.chat-time{font-size:11px;color:#82909b;white-space:nowrap}.login-panel{max-width:620px;margin:22px auto 0;border:1px solid #aebbc6;background:#f5f7f9}.panel-heading{background:#e1e7ec;border-bottom:1px solid #c5cfd7;padding:11px 14px;font-weight:600;color:#344b5c}.login-form{padding:16px;display:grid;grid-template-columns:1fr 1fr auto;align-items:end;gap:12px}.login-form label,.form-grid label{display:flex;flex-direction:column;gap:6px;color:#526371;font-size:12px}input,select{font:inherit;color:#253746;background:#fff;border:1px solid #aebbc6;padding:8px 9px;min-width:0;outline:none}input:focus,select:focus{border-color:#477da5;box-shadow:0 0 0 2px #d6e5f0}.primary-button,.small-button{border:1px solid #315f80;background:#477da5;color:white;padding:8px 14px;font:inherit;cursor:pointer}.primary-button:hover{background:#376b91}.small-button{font-size:11px;padding:5px 9px;background:#e8eef3;color:#315f80;border-color:#b4c4d0}.page[hidden],[hidden]{display:none!important}.panel{background:#f8fafb;border:1px solid #c6d0d8;margin-bottom:16px}.form-grid{padding:16px;display:grid;grid-template-columns:repeat(2,minmax(180px,1fr));gap:14px}.form-grid.two{grid-template-columns:repeat(2,minmax(200px,1fr))}.form-grid .full{grid-column:1/-1}.form-actions{display:flex;align-items:center;gap:12px;grid-column:1/-1}.form-message{font-size:12px;color:#3d704d}.error{grid-column:1/-1;color:#a23b35;font-size:12px;min-height:15px}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}th{text-align:left;background:#eef2f5;color:#526371;font-weight:600}th,td{padding:10px 12px;border-bottom:1px solid #dce2e7}tbody tr:last-child td{border-bottom:0}.full-chat{max-height:480px;overflow:auto;padding:12px}.chat-entry{padding:10px 12px;border:1px solid #d6dee4;background:#fff;margin-bottom:8px}.chat-entry-head{display:flex;justify-content:space-between;gap:12px;color:#536879;font-size:11px;margin-bottom:6px}.chat-entry-body{white-space:pre-wrap;overflow-wrap:anywhere}.chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid #d2dbe2}.chat-form input{flex:1}.machine-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid #e0e5e9}.machine-row:last-child{border-bottom:0}.restore-button{border:1px solid #8cae96;background:#edf5ef;color:#28623b;padding:5px 9px;cursor:pointer}.footer{height:30px;background:#dce3e9;border-top:1px solid #c2ccd5;padding:7px 18px;text-align:right;font-size:10px;color:#7b8994}.footer span{padding:0 5px}
@media(max-width:850px){.sidebar{width:190px}.main{padding:18px}.machine-grid{grid-template-columns:repeat(2,minmax(150px,1fr))}.login-form{grid-template-columns:1fr 1fr}.login-form button{grid-column:1/-1}}@media(max-width:620px){.shell{display:block}.sidebar{width:100%;display:block;padding:8px}.sidebar-bottom{margin-top:8px;display:flex}.side-heading{padding:8px}.nav-item{width:auto;display:inline-block;padding:8px}.main{padding:14px}.machine-grid{grid-template-columns:1fr}.page-head{align-items:flex-start;gap:10px}.page-user{display:none}.login-form,.form-grid,.form-grid.two{grid-template-columns:1fr}.form-grid .full,.form-actions{grid-column:1}.chat-preview-row{flex-wrap:wrap}.chat-author{min-width:100%}.chat-time{margin-left:auto}}

/* Uzgodnione poprawki */
.topbar{min-height:116px;height:auto;padding-top:8px;padding-bottom:8px}
.brand{min-height:100px;min-width:120px;gap:10px}
.brand-logo{display:block;max-height:100px;max-width:min(360px,42vw);width:auto;height:auto;object-fit:contain}
.brand-logo[hidden]{display:none}
.brand-logo-empty{display:block;width:1px;height:1px}
.logo-upload-label{display:inline-block;border:1px solid #8298a8;background:#344b5c;color:#fff;padding:7px 11px;font-size:12px;cursor:pointer}
.logo-upload-label:hover{background:#42647c}
.logo-message{font-size:11px;color:#d8e1e9}
.shell.public-mode .sidebar{display:none}
.shell.public-mode .main{max-width:none}
.chat-preview-section{width:33.333vw;min-width:320px;max-width:620px;margin:22px auto 0}
.chat-preview-section .section-title{margin-top:0}
.chat-preview{min-height:110px;max-height:260px;overflow:auto;box-shadow:0 1px 2px rgba(30,48,62,.08)}
.chat-preview-row{display:block;padding:9px 12px}
.chat-author{display:block;min-width:0;margin-bottom:3px}
.chat-text{display:block}
.chat-time{display:block;margin-top:4px}
.status.off{color:#59636b;background:#eceff1;border-color:#c5cbd0}
.machine-action-cell{white-space:nowrap}
.machine-state-select{max-width:145px;margin-right:6px}
.delete-button{border:1px solid #c99b98;background:#f8eceb;color:#8a3434;padding:5px 9px;cursor:pointer}
.delete-button:hover{background:#f1dedd}
.restore-button:disabled{opacity:.55;cursor:not-allowed}
@media(max-width:850px){
  .chat-preview-section{width:min(60vw,620px)}
}
@media(max-width:620px){
  .topbar{min-height:84px;padding:6px 12px}
  .brand{min-height:70px}
  .brand-logo{max-height:70px;max-width:48vw}
  .chat-preview-section{width:100%;min-width:0;max-width:none}
  .chat-preview-row{display:block}
}

/* Historia awarii wyświetlana wewnątrz każdej karty maszyny */
.machine-card{display:block;min-height:0;padding:12px 14px}
.machine-card-current{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px}
.machine-status-box{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-width:104px;min-height:48px;padding:6px 8px;border:1px solid #c6d0d8;background:#eef2f5}
.machine-downtime-duration{font-size:11px;font-weight:600;color:#963a35;white-space:nowrap}
.machine-history{border-top:1px solid #cbd4db;margin-top:10px;padding-top:7px}
.machine-history-entry{font-size:11px;line-height:1.5;color:#536575;padding:4px 0;border-bottom:1px solid #e2e7eb;overflow-wrap:anywhere}
.machine-history-entry:last-child{border-bottom:0}
.machine-history-empty{font-size:11px;color:#89949c;padding:4px 0}

/* Poprawki beta: niebieski czat i czytelny przycisk logo administratora */
.logo-upload-label[hidden]{display:none!important}
.logo-upload-label{display:inline-block;border:1px solid #8fb5d3;background:#dcecf8;color:#174b70;padding:7px 11px;font-size:12px;cursor:pointer;border-radius:2px}
.logo-upload-label:hover{background:#c8e1f3}
.chat-entry{border:1px solid #9fc4df;background:#e7f3fc;margin-bottom:8px;padding:10px 12px}
.chat-entry-head{color:#245b7e}
.chat-entry-body{color:#173e59}
.chat-form{background:#dcecf8;border-top:1px solid #a9c9df}
.chat-form input{border-color:#9bbbd2}
.chat-preview{background:#e7f3fc;border-color:#9fc4df}
.chat-preview-row{background:#e7f3fc;border-bottom-color:#c5ddeb}
.chat-author{color:#245b7e}