*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Segoe UI",Helvetica,Arial,sans-serif;background:#fff;color:#333;font-size:14px}
a{text-decoration:none}

/* Header */
.header{display:flex;align-items:center;justify-content:space-between;padding:8px 24px;background:#fff;border-top:3px solid #d8d8d8;border-bottom:1px solid #eee}
.logo{width:66px;height:66px}.logo svg{width:100%;height:100%}
.header-right{display:flex;align-items:center;gap:16px}
.bell{position:relative;color:#8a94a6;cursor:pointer}.bell svg{width:22px;height:22px}
.bell .count{position:absolute;top:-8px;right:-8px;background:#e0503a;color:#fff;font-size:11px;font-weight:600;min-width:18px;height:18px;border-radius:10px;display:grid;place-items:center;padding:0 4px}
.user{display:flex;align-items:center;gap:10px;padding-left:14px;border-left:1px solid #eee}
.user .pic{width:42px;height:42px;border-radius:50%;background:#b9bcc2;display:grid;place-items:center;color:#fff;overflow:hidden}
.user .pic svg{width:24px;height:24px}.user .pic img{width:100%;height:100%;object-fit:cover}
.user .name{color:#5a6270;font-size:15px}
.logout{color:#9aa2af;cursor:pointer;padding-left:12px;border-left:1px solid #eee;display:flex}.logout svg{width:22px;height:22px}

/* Nav */
.navbar{background:#40454e;padding:0 24px}
.navbar ul{list-style:none;display:flex;flex-wrap:wrap}
.navbar li{position:relative}
.navbar a{display:block;color:#c9ced6;padding:16px 18px;font-size:14px}
.navbar a:hover,.navbar li:hover>a,.navbar a.on{background:#4c525c;color:#fff}
.caret{display:inline-block;margin-left:6px;border-top:5px solid;border-left:4px solid transparent;border-right:4px solid transparent;vertical-align:middle}
.navbar .dropdown-menu{display:none;position:absolute;top:100%;left:0;background:#fff;min-width:210px;box-shadow:0 6px 16px rgba(0,0,0,.18);z-index:20;border:1px solid #eee}
.navbar li:hover .dropdown-menu{display:block}
.navbar .dropdown-menu a{color:#444;padding:10px 16px;font-size:13.5px}
.navbar .dropdown-menu a:hover{background:#f2f4f7;color:#222}

/* Page */
.container{padding:20px 26px 70px}
.page-title{color:#7a7a7a;font-weight:400;font-size:26px;margin-bottom:22px}
.section-head{margin:8px 0 22px}
.section-head b{color:#6f6f6f;font-weight:600;font-size:18px}
.section-head small{color:#9a9a9a;font-size:13px;margin-left:8px}

/* Stat cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:26px}
.card{position:relative;border-radius:3px;padding:26px;color:#fff;overflow:hidden;min-height:118px;display:flex;align-items:center;justify-content:flex-end}
.card .num{font-size:52px;font-weight:300;line-height:1;text-align:right}
.card .lbl{font-size:18px;text-align:right;font-weight:300}
.card .bg-ic{position:absolute;left:14px;top:50%;transform:translateY(-50%);opacity:.18}
.card .bg-ic svg{width:96px;height:96px}
.card.blue{background:#5b9bd5}.card.teal{background:#3bafa2}.card.purple{background:#8879b5}
.card .content{text-align:right;position:relative;z-index:1}

/* Tabs + export */
.tab-bar{display:flex;align-items:flex-end;justify-content:space-between;border-bottom:1px solid #ddd;margin-bottom:4px;flex-wrap:wrap;gap:10px}
.tabs{display:flex;gap:2px}
.tab{padding:9px 16px;color:#2fb3a3;font-size:14px;border:1px solid transparent;border-bottom:none;border-radius:4px 4px 0 0;margin-bottom:-1px;display:flex;align-items:center;gap:6px}
.tab svg{width:15px;height:15px}
.tab.active{background:#fff;border-color:#ddd;border-bottom:1px solid #fff;color:#555;font-weight:600}
.export-btn{background:#2fb3a3;color:#fff;border:none;padding:7px 14px;border-radius:3px;font-size:13px;cursor:pointer;display:inline-flex;align-items:center;gap:7px;margin-bottom:8px}
.export-btn:hover{background:#28a294}.export-btn svg{width:15px;height:15px}

/* Table */
.dt-top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin:16px 0 12px}
.dt-len select,.dt-search input{padding:6px 8px;border:1px solid #ccc;border-radius:3px;font-size:13px}
.dt-search input{min-width:200px;margin-left:6px}
.dt-label{font-size:13px;margin:6px 0 10px}
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
thead th{text-align:left;padding:11px 12px;font-size:13px;border:1px solid #e6e6e6;white-space:nowrap;color:#333}
tbody td{padding:10px 12px;font-size:13px;border:1px solid #eee;color:#444}
tbody tr:nth-child(even){background:#fafafa}
tbody tr:hover{background:#f1f6fb}
.no-data{text-align:center;color:#666;padding:16px;background:#f7f7f7}
.dt-info{font-size:13px;color:#555;margin-top:12px}

/* Forms */
.frow{display:grid;grid-template-columns:430px 1fr;column-gap:20px;align-items:center;margin-bottom:20px}
.frow.top{align-items:start}
.frow label{text-align:right;font-size:14px;color:#555}
.frow label.req{color:#e07a72}
.frow input,.frow select,.frow textarea{width:100%;padding:9px 11px;border:1px solid #cfcfcf;border-radius:3px;font-size:14px;color:#333;background:#fff;font-family:inherit}
.frow input[readonly]{background:#eee;color:#555}
.frow textarea{min-height:120px;resize:vertical}
.frow input:focus,.frow select:focus,.frow textarea:focus{outline:none;border-color:#66a3d2;box-shadow:0 0 4px rgba(102,163,210,.4)}
.hint{font-size:11.5px;color:#8a8a8a}
.note{color:#e0483f;font-size:13px;margin-top:12px}
.personal{display:grid;grid-template-columns:1fr 150px 1fr;column-gap:40px;align-items:start}
.contact{display:grid;grid-template-columns:1fr 1fr;column-gap:70px}
.col{display:flex;flex-direction:column}
.avatar-wrap{display:flex;justify-content:center;padding-top:70px}
.avatar{width:92px;height:92px;border-radius:50%;overflow:hidden;background:#e9eaec;display:grid;place-items:center;filter:grayscale(100%)}
.avatar svg{width:70px;height:70px;color:#9aa0a8}.avatar img{width:100%;height:100%;object-fit:cover}
.btn{background:#3bb0a2;color:#fff;border:none;border-radius:3px;padding:9px 22px;font-size:14px;font-weight:600;cursor:pointer}
.btn:hover{background:#33a294}
.btn.grey{background:#f4f4f4;color:#555;border:1px solid #d5d5d5;margin-left:8px}
.actions{margin-top:6px;padding-left:450px}
.alert{padding:11px 15px;border-radius:4px;margin-bottom:18px;font-size:14px}
.alert.ok{background:#e6f5ec;color:#1f7a3d;border:1px solid #bfe3cc}
.alert.err{background:#fdeaea;color:#b4322b;border:1px solid #f3c4c1}

/* Login */
.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#3b4552,#2c333d)}
.login-card{background:#fff;border-radius:10px;box-shadow:0 20px 50px rgba(0,0,0,.3);width:360px;padding:30px 28px}
.login-card h2{color:#40454e;margin:14px 0 4px;font-size:20px}
.login-card p.sub{color:#888;font-size:13px;margin-bottom:20px}
.login-card .fld{margin-bottom:14px}
.login-card label{display:block;font-size:13px;color:#555;margin-bottom:5px}
.login-card input{width:100%;padding:10px 12px;border:1px solid #cfcfcf;border-radius:5px;font-size:14px}
.login-card input:focus{outline:none;border-color:#66a3d2;box-shadow:0 0 4px rgba(102,163,210,.4)}
.login-card .btn{width:100%;justify-content:center;margin-top:4px;padding:11px}
.login-logo{width:60px;height:60px;margin:0 auto;display:block}
.login-demo{font-size:12px;color:#999;text-align:center;margin-top:14px}

@media(max-width:900px){
  .cards{grid-template-columns:1fr}.personal{grid-template-columns:1fr}.contact{grid-template-columns:1fr}
  .avatar-wrap{padding-top:0;justify-content:flex-start;margin:10px 0}
  .frow{grid-template-columns:130px 1fr}.frow label{text-align:left}
  .actions{padding-left:146px}
}

/* Admin extras */
.admin-badge{background:#40454e;color:#fff;font-size:11px;font-weight:700;letter-spacing:.05em;padding:4px 9px;border-radius:4px}
.pill{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:600}
.pill.UnAssigned{background:#fdeaea;color:#c0392b}
.pill.Assigned{background:#e5eefb;color:#2563eb}
.pill.Inprogress{background:#fdf1e0;color:#d97706}
.pill.Completed{background:#e6f5ec;color:#16a34a}
.pill.Closed{background:#eef1f5;color:#64748b}
.act{color:#2fb3a3;font-weight:600;cursor:pointer}
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.filters a{padding:7px 12px;border:1px solid #ddd;border-radius:20px;font-size:13px;color:#555}
.filters a.on{background:#2fb3a3;color:#fff;border-color:#2fb3a3}
.mng{max-width:900px}
.mng .frow{grid-template-columns:180px 1fr}
.card-box{border:1px solid #eee;border-radius:8px;padding:18px 20px;margin-bottom:18px;background:#fafbfc}
.card-box h3{font-size:15px;color:#40454e;margin-bottom:12px}
.kv{display:flex;padding:6px 0;font-size:14px;border-bottom:1px solid #eef2f7}
.kv .k{width:150px;color:#888}

/* Solution Details modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.35);display:none;align-items:flex-start;justify-content:center;padding:56px 20px;z-index:200}
.modal-overlay.open{display:flex}
.modal{background:#fff;width:100%;max-width:780px;border-radius:6px;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:mpop .18s ease}
@keyframes mpop{from{transform:translateY(10px);opacity:0}to{transform:none;opacity:1}}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:15px 22px;border-bottom:1px solid #eee}
.modal-head h3{font-size:18px;color:#666;font-weight:400}
.modal-x{background:none;border:none;font-size:24px;color:#b0b0b0;cursor:pointer;line-height:1}
.modal-x:hover{color:#666}
.modal-body{padding:22px 26px}
.mrow{display:grid;grid-template-columns:160px 1fr;gap:18px;align-items:start;margin-bottom:22px}
.mrow>label{text-align:right;color:#555;font-size:14px;padding-top:8px}
.mrow textarea{width:100%;min-height:82px;padding:9px 11px;border:1px solid #cfcfcf;border-radius:3px;font-size:14px;font-family:inherit;background:#fff;resize:vertical;color:#333}
.radios{display:flex;flex-direction:column;gap:9px;padding-top:6px}
.rad{display:flex;align-items:center;gap:7px;font-size:14px;color:#333}
.view-link{color:#2fb3a3;font-weight:600;cursor:pointer;text-decoration:none}
.view-link:hover{text-decoration:underline}

.modal-foot{display:flex;gap:10px;justify-content:flex-end;padding:14px 24px;border-top:1px solid #eee}

.link-btn{background:none;border:none;color:#dc2626;font-weight:600;cursor:pointer;font-size:13px;padding:0;font-family:inherit}
.link-btn:hover{text-decoration:underline}

@media print{
  .header,.navbar,.filters,.export-btn,.btn,.act,.view-link,.modal-overlay,.dt-page,.dt-search{display:none!important}
  .container{padding:0}
  .card-box,.card{box-shadow:none;border:1px solid #ccc}
}

/* ===== Colored table headers ===== */
thead th{background:#2fb3a3;color:#fff;border-color:#28a89a}
thead th .sort{color:rgba(255,255,255,.55)}
thead th .up,thead th .down{color:rgba(255,255,255,.55)}
thead th.asc .up{color:#fff}
thead th.desc .down{color:#fff}
thead th:hover{background:#28a89a}
tbody tr:hover{background:#eafaf7}

/* ===== VTK logo sizing ===== */
.logo{width:auto;height:56px;display:flex;align-items:center}
.logo img{height:50px;width:auto;display:block}
.login-logo{width:auto;height:auto;max-width:230px;margin:0 auto 6px;display:block}

/* ================= RESPONSIVE (tablet + mobile) ================= */

/* Tablet */
@media(max-width:992px){
  .container{padding:18px 18px 60px}
  .cards{grid-template-columns:1fr 1fr}
  .frow{grid-template-columns:160px 1fr}
  .mng .frow{grid-template-columns:160px 1fr}
  .contact{column-gap:36px}
  .personal{column-gap:24px}
}

/* Large phone / small tablet */
@media(max-width:760px){
  /* nav wraps and shows dropdown links inline so every page is reachable by tap */
  .navbar{padding:0 8px}
  .navbar ul{flex-wrap:wrap}
  .navbar a{padding:12px 12px;font-size:13px}
  .navbar .dropdown-menu{position:static;display:block;box-shadow:none;border:none;background:transparent;min-width:0}
  .navbar .dropdown-menu a{color:#aeb8c6;padding:8px 12px;font-size:12.5px}
  .navbar li:hover .dropdown-menu a:hover{background:#4c525c}

  .dt-top{flex-direction:column;align-items:stretch;gap:10px}
  .dt-search{display:flex;flex-direction:column;gap:4px}
  .dt-search input{width:100%;margin-left:0}
  .dt-len{display:flex;align-items:center}
  .filters{gap:8px}
  .filters .dt-search{margin-left:0!important;width:100%}
}

/* Phone */
@media(max-width:600px){
  .header{flex-wrap:wrap;gap:8px;padding:8px 14px}
  .logo{height:44px}.logo img{height:38px}
  .user{padding-left:8px}
  .user .name{display:none}          /* keep avatar, hide long name on tiny screens */
  .admin-badge{font-size:10px;padding:3px 7px}

  .page-title{font-size:22px;margin-bottom:16px}
  .cards{grid-template-columns:1fr;gap:14px}
  .card{min-height:92px;padding:20px}
  .card .num{font-size:40px}
  .card .lbl{font-size:16px}

  /* stack every form row: label sits above the input */
  .frow,.mng .frow,.mrow{grid-template-columns:1fr !important;gap:6px}
  .frow label,.mng .frow label,.mrow>label{text-align:left !important}
  .actions{padding-left:0 !important}
  .personal{grid-template-columns:1fr}
  .avatar-wrap{padding-top:0;justify-content:flex-start;margin:8px 0}

  /* modal fits the screen */
  .modal-overlay{padding:20px 12px}
  .modal{max-width:100%}
  .modal-body{padding:16px}
  .mrow textarea{min-height:70px}

  /* login card never overflows */
  .login-card{width:100%;max-width:360px;padding:24px 20px}

  .btn{padding:10px 16px;font-size:13px}
  .tab{padding:8px 12px;font-size:13px}
  .export-btn{padding:6px 11px}
}

/* very small phones */
@media(max-width:380px){
  .navbar a{padding:10px 9px;font-size:12.5px}
  .card .num{font-size:34px}
}

/* ===== Conversation / chat ===== */
.chat-wrap{max-width:820px}
.chat-box{border:1px solid #e6e6e6;border-radius:8px;background:#fafbfc;padding:16px;max-height:460px;overflow-y:auto;margin-bottom:14px}
.msg{margin-bottom:14px;display:flex;flex-direction:column;max-width:78%}
.msg.me{margin-left:auto;align-items:flex-end}
.msg.them{margin-right:auto;align-items:flex-start}
.msg .bubble{padding:9px 13px;border-radius:12px;font-size:14px;line-height:1.45;word-break:break-word}
.msg.me .bubble{background:#2fb3a3;color:#fff;border-bottom-right-radius:3px}
.msg.them .bubble{background:#fff;border:1px solid #e2e6ea;color:#333;border-bottom-left-radius:3px}
.msg .meta{font-size:11px;color:#8a8a8a;margin:3px 5px 0}
.chat-empty{text-align:center;color:#999;padding:26px}
.chat-form{display:flex;gap:10px}
.chat-form textarea{flex:1;min-height:54px;padding:10px 12px;border:1px solid #cfcfcf;border-radius:8px;font-family:inherit;font-size:14px;resize:vertical}
.chat-form textarea:focus{outline:none;border-color:#66a3d2;box-shadow:0 0 4px rgba(102,163,210,.4)}
@media(max-width:600px){.msg{max-width:90%}.chat-form{flex-direction:column}}

/* ===== Professional conversation UI ===== */
.chat-page{max-width:860px;margin:0 auto;border:1px solid #e6e9ee;border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 2px 8px rgba(15,38,71,.06)}
.chat-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 20px;background:#40454e}
.chat-header h2{font-size:16px;color:#fff;font-weight:600;margin:0}
.chat-sub{padding:13px 20px;background:#f7f9fb;border-bottom:1px solid #eceff3;font-size:13.5px;color:#5a6472;line-height:1.7}
.chat-sub b{color:#33404f}
.chat-thread{padding:20px;height:440px;overflow-y:auto;background:#eef2f7;display:flex;flex-direction:column;gap:16px}
.cmsg{display:flex;gap:10px;max-width:80%}
.cmsg.them{align-self:flex-start}
.cmsg.me{align-self:flex-end;flex-direction:row-reverse}
.cavatar{width:38px;height:38px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;color:#fff;font-size:13px;font-weight:700}
.cbody{display:flex;flex-direction:column;gap:4px;min-width:0}
.cmsg.me .cbody{align-items:flex-end}
.cname{font-size:12px;color:#6b7480;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.crole{font-size:9.5px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:1px 7px;border-radius:10px}
.role-admin{background:#e5e7eb;color:#374151}
.role-engineer{background:#d5f2ec;color:#177f70}
.role-user{background:#e0ecfb;color:#2563eb}
.ctime{color:#9aa3ad}
.cbubble{padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.5;box-shadow:0 1px 1px rgba(0,0,0,.05);word-break:break-word}
.cmsg.them .cbubble{background:#fff;border:1px solid #e6e9ee;color:#2b3440;border-top-left-radius:4px}
.cmsg.me .cbubble{background:#2fb3a3;color:#fff;border-top-right-radius:4px}
.chat-empty{margin:auto;text-align:center;color:#9aa3ad;font-size:14px;line-height:1.8}
.chat-input{display:flex;gap:10px;padding:14px 16px;border-top:1px solid #eceff3;background:#fff}
.chat-input textarea{flex:1;min-height:46px;max-height:140px;padding:12px 15px;border:1px solid #d4dae1;border-radius:22px;font-family:inherit;font-size:14px;resize:none;outline:none}
.chat-input textarea:focus{border-color:#2fb3a3;box-shadow:0 0 0 3px rgba(47,179,163,.15)}
.chat-input button{align-self:flex-end;border:none;background:#2fb3a3;color:#fff;font-weight:600;padding:0 24px;height:46px;border-radius:23px;cursor:pointer}
.chat-input button:hover{background:#28a294}
.chat-back{max-width:860px;margin:16px auto 0}
@media(max-width:600px){.chat-page{border-radius:0}.cmsg{max-width:92%}.chat-thread{height:58vh}.chat-input button{padding:0 16px}}

.chat-closed-note{padding:9px 20px;background:#fff8e6;color:#96711d;font-size:12.5px;border-bottom:1px solid #f0e6c8}