*{box-sizing:border-box}
:root{
    --bg:#f4f7fb;
    --surface:#ffffff;
    --surface-soft:#f8fafc;
    --text:#0f172a;
    --muted:#64748b;
    --line:#e2e8f0;
    --primary:#0f766e;
    --primary-strong:#115e59;
    --primary-soft:#ecfdf5;
    --navy:#0b1324;
    --navy-2:#111c33;
    --blue:#2563eb;
    --purple:#7c3aed;
    --danger:#dc2626;
    --warning:#d97706;
    --success:#16a34a;
    --radius:20px;
    --radius-lg:28px;
    --radius-xl:34px;
    --shadow-sm:0 10px 24px rgba(15,23,42,.06);
    --shadow-md:0 22px 48px rgba(15,23,42,.10);
    --shadow-lg:0 30px 70px rgba(15,23,42,.16);
    --gradient:linear-gradient(135deg,#0f766e 0%,#115e59 48%,#0f172a 100%);
    --gradient-soft:linear-gradient(135deg,#effcf7 0%,#eff6ff 55%,#f8f5ff 100%);
}
html,body{height:100%}
body{
    margin:0;
    color:var(--text);
    font:15px/1.5 Inter,Segoe UI,Roboto,Arial,sans-serif;
    background:
      radial-gradient(circle at top left, rgba(15,118,110,.10), transparent 30%),
      radial-gradient(circle at top right, rgba(37,99,235,.10), transparent 22%),
      linear-gradient(180deg,#f8fbff, var(--bg));
}
a{text-decoration:none;color:inherit}
.app-shell{
    display:grid;
    grid-template-columns:320px minmax(0,1fr);
    min-height:100vh;
}
.sidebar{
    background:linear-gradient(180deg,var(--navy),var(--navy-2));
    color:#fff;
    position:sticky;
    top:0;
    height:100vh;
    overflow:auto;
    border-right:1px solid rgba(255,255,255,.06);
}
.sidebar-inner{padding:22px}
.brand{
    display:flex;
    align-items:center;
    gap:14px;
    padding:16px;
    border-radius:26px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.08);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.brand img{
    width:60px;height:60px;object-fit:contain;
    background:#fff;border-radius:18px;padding:6px;
}
.brand-mark{
    width:60px;height:60px;border-radius:18px;
    display:grid;place-items:center;
    background:linear-gradient(135deg,#2dd4bf,#0f766e);
    color:#fff;font-size:30px;font-weight:900;
}
.brand-copy strong{display:block;font-size:18px;letter-spacing:-.02em}
.brand-copy small{display:block;opacity:.78;margin-top:4px;font-size:12px}
.sidebar-section-title{
    margin:24px 10px 10px;
    color:rgba(255,255,255,.55);
    font-size:11px;
    text-transform:uppercase;
    letter-spacing:.14em;
    font-weight:900;
}
.side-nav{
    display:grid;
    gap:10px;
}
.side-nav a{
    display:flex;
    align-items:center;
    gap:12px;
    padding:12px 14px;
    border-radius:18px;
    color:#e2e8f0;
    background:rgba(255,255,255,.03);
    border:1px solid rgba(255,255,255,.06);
    transition:all .18s ease;
    font-weight:800;
}
.nav-icon{
    width:42px;height:42px;
    display:grid;place-items:center;
    border-radius:14px;
    background:rgba(255,255,255,.08);
    border:1px solid rgba(255,255,255,.08);
    font-size:18px;
    flex:0 0 auto;
}
.nav-label{font-size:15px}
.side-nav a:hover{
    transform:translateX(3px);
    background:rgba(255,255,255,.08);
    box-shadow:0 10px 24px rgba(0,0,0,.20);
}
.side-nav a.active{
    background:linear-gradient(135deg, rgba(15,118,110,.32), rgba(255,255,255,.10));
    border-color:rgba(45,212,191,.26);
    color:#fff;
    box-shadow:0 14px 28px rgba(0,0,0,.20);
}
.side-nav a.active .nav-icon{
    background:rgba(255,255,255,.14);
    border-color:rgba(255,255,255,.12);
}
.sidebar-card{
    margin-top:18px;
    padding:16px;
    border-radius:20px;
    background:linear-gradient(135deg, rgba(45,212,191,.18), rgba(37,99,235,.18));
    border:1px solid rgba(255,255,255,.08);
}
.sidebar-card strong{display:block;margin-bottom:6px}
.sidebar-card p{margin:0;color:#dbeafe;line-height:1.55}
.main-area{min-width:0}
.topbar{
    position:sticky;top:0;z-index:8;
    min-height:84px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:16px;
    padding:18px 28px;
    background:rgba(255,255,255,.80);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(18px);
}
.topbar-copy strong{display:block;font-size:17px;letter-spacing:-.02em}
.topbar-copy small{display:block;margin-top:4px;color:var(--muted)}
.user-pill{
    display:flex;align-items:center;gap:12px;
    background:#fff;border:1px solid var(--line);
    border-radius:999px;padding:8px 14px 8px 8px;
    box-shadow:var(--shadow-sm);
}
.user-avatar{
    width:42px;height:42px;border-radius:50%;
    display:grid;place-items:center;
    background:var(--gradient);
    color:#fff;font-weight:900;
}
.user-meta span{display:block;font-weight:800}
.user-meta strong{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--primary);margin-top:2px}
.container{max-width:1280px;margin:0 auto;padding:28px}
.hero{
    position:relative;overflow:hidden;
    min-height:185px;
    padding:34px;
    border-radius:var(--radius-xl);
    background:var(--gradient);
    color:#fff;
    box-shadow:var(--shadow-lg);
    display:flex;flex-direction:column;justify-content:center;
}
.hero:before{
    content:"";position:absolute;right:-80px;top:-100px;
    width:280px;height:280px;border-radius:50%;
    background:rgba(255,255,255,.11);
}
.hero:after{
    content:"";position:absolute;left:56%;bottom:-90px;
    width:180px;height:180px;border-radius:50%;
    background:rgba(255,255,255,.08);
}
.hero h1{margin:0 0 10px;font-size:40px;line-height:1.05;letter-spacing:-.05em;position:relative;z-index:1}
.hero p{margin:0;max-width:820px;opacity:.95;line-height:1.65;position:relative;z-index:1}
.card{
    background:rgba(255,255,255,.96);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-sm);
    padding:24px;
    margin-bottom:20px;
}
.card h1,.card h2,.card h3{margin-top:0;letter-spacing:-.03em}
.card h2{font-size:23px}
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.col-12{grid-column:span 12}.col-8{grid-column:span 8}.col-7{grid-column:span 7}.col-6{grid-column:span 6}.col-5{grid-column:span 5}.col-4{grid-column:span 4}.col-3{grid-column:span 3}
.stats{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:18px;
    margin:22px 0;
}
.stat{
    position:relative;overflow:hidden;
    background:#fff;border:1px solid var(--line);
    border-radius:26px;padding:22px;
    box-shadow:var(--shadow-sm);
}
.stat:before{
    content:"";position:absolute;right:-26px;top:-18px;
    width:95px;height:95px;border-radius:50%;
    background:rgba(15,118,110,.08);
}
.stat .icon{
    position:relative;z-index:1;
    width:48px;height:48px;
    border-radius:16px;
    display:grid;place-items:center;
    background:var(--gradient-soft);
    margin-bottom:14px;font-size:22px;
}
.stat strong{display:block;position:relative;z-index:1;font-size:35px;line-height:1;letter-spacing:-.05em}
.stat span{display:block;position:relative;z-index:1;color:var(--muted);font-weight:800;margin-top:8px}
label{
    display:block;margin-bottom:8px;
    color:#243041;font-size:14px;font-weight:800;
}
input,select,textarea{
    width:100%;
    padding:13px 14px;
    border:1px solid var(--line);
    border-radius:16px;
    background:#fff;
    color:var(--text);
    outline:none;
    font-size:15px;
    transition:all .16s ease;
}
input::placeholder,textarea::placeholder{color:#94a3b8}
input:focus,select:focus,textarea:focus{
    border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(15,118,110,.12);
}
textarea{min-height:128px;resize:vertical}
button,.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;
    padding:11px 18px;
    border:none;border-radius:999px;
    cursor:pointer;
    font-weight:900;
    font-size:15px;
    white-space:nowrap;
    color:#fff;
    background:var(--primary);
    box-shadow:0 12px 24px rgba(15,118,110,.18);
    transition:all .16s ease;
}
button:hover,.btn:hover{transform:translateY(-1px);background:var(--primary-strong)}
.btn.secondary{background:#334155}
.btn.light{
    background:#f8fafc;color:#0f172a;
    border:1px solid #e5edf4;box-shadow:none;
}
.btn.blue{background:var(--blue)}
.btn.purple{background:var(--purple)}
.btn.danger{background:var(--danger)}
.actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:18px}
.table-wrap{
    overflow:auto;
    border-radius:22px;
    border:1px solid var(--line);
    background:#fff;
}
.table{width:100%;border-collapse:collapse}
.table th,.table td{
    padding:15px;
    border-bottom:1px solid #eef2f7;
    text-align:left;vertical-align:top;
}
.table tr:last-child td{border-bottom:0}
.table th{
    background:#f8fafc;
    color:#475467;
    font-size:12px;
    text-transform:uppercase;
    letter-spacing:.08em;
    font-weight:900;
}
.table td small{color:var(--muted)}
.badge{
    display:inline-flex;align-items:center;
    padding:5px 10px;
    border-radius:999px;
    font-size:12px;font-weight:900;line-height:1;
    background:#e2e8f0;color:#334155;
}
.badge.ok{background:#dcfce7;color:#166534}
.badge.warn{background:#fef3c7;color:#92400e}
.badge.danger{background:#fee2e2;color:#991b1b}
.badge.blue{background:#dbeafe;color:#1d4ed8}
.alert{
    margin-bottom:16px;
    padding:15px 17px;
    border-radius:18px;
    border:1px solid;
    font-weight:800;
}
.alert.success{background:#ecfdf5;color:var(--success);border-color:#bbf7d0}
.alert.error{background:#fef2f2;color:var(--danger);border-color:#fecaca}
.alert.info{background:#eff6ff;color:#1d4ed8;border-color:#bfdbfe}
.notice{
    padding:18px;
    border-radius:22px;
    border:1px solid #dbeafe;
    background:var(--gradient-soft);
    color:#334155;
    line-height:1.65;
}
.login-bg{
    min-height:100vh;display:grid;place-items:center;padding:24px;
    background:
      radial-gradient(circle at top left, rgba(15,118,110,.14), transparent 30%),
      radial-gradient(circle at bottom right, rgba(37,99,235,.12), transparent 26%),
      linear-gradient(135deg,#effaf7,#f5f8ff 60%,#faf5ff);
}
.login-card{
    width:100%;max-width:520px;
    padding:30px;
    border-radius:32px;
    box-shadow:var(--shadow-lg);
}
.login-logo{text-align:center;margin-bottom:22px}
.login-logo img{max-width:240px;max-height:92px;object-fit:contain}
.login-mark{
    width:84px;height:84px;border-radius:24px;
    display:grid;place-items:center;margin:auto;
    background:var(--gradient);color:#fff;font-size:44px;font-weight:900;
    box-shadow:var(--shadow-md);
}
.login-logo h1{margin:16px 0 10px;letter-spacing:-.05em}
.login-logo p{color:var(--muted);line-height:1.6}
.message{
    padding:16px;margin-bottom:12px;
    border-radius:20px;border:1px solid var(--line);
    background:#f8fafc;
}
.message small{display:block;margin-top:4px;color:var(--muted)}
.message p{line-height:1.6}
.quick-actions{display:flex;gap:8px;flex-wrap:wrap}
.call-panel{
    display:grid;
    grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);
    gap:20px;
}
.call-card{
    position:relative;overflow:hidden;
    border-radius:32px;padding:30px;
    background:linear-gradient(135deg,#111827,#0f766e 78%);
    color:#fff;box-shadow:var(--shadow-lg);
}
.call-card:after{
    content:"";position:absolute;right:-88px;top:-90px;
    width:250px;height:250px;border-radius:50%;
    background:rgba(255,255,255,.10);
}
.call-card>*{position:relative;z-index:1}
.call-card h2{font-size:31px;letter-spacing:-.05em}
.call-card p{line-height:1.6}
.call-card label{color:#fff}
.call-card input,.call-card select{
    background:rgba(255,255,255,.97);
    border-color:rgba(255,255,255,.35);
}
.call-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.call-buttons .btn,.call-buttons button{
    background:#fff;color:#0f172a;box-shadow:none;
}
.jitsi-box{
    height:76vh;min-height:560px;
    overflow:hidden;border-radius:30px;
    background:#000;border:1px solid var(--line);
    box-shadow:var(--shadow-lg);
}
.help{display:block;margin-top:7px;color:var(--muted);line-height:1.5}
code{
    display:inline-block;
    padding:4px 8px;border-radius:10px;
    background:#f1f5f9;color:#0f172a;font-size:12px;
}
@media (max-width:1100px){
    .app-shell{grid-template-columns:1fr}
    .sidebar{position:relative;height:auto}
    .side-nav{grid-template-columns:repeat(3,1fr)}
    .side-nav a{padding:10px}
    .stats{grid-template-columns:repeat(2,1fr)}
    .call-panel{grid-template-columns:1fr}
}
@media (max-width:760px){
    .container{padding:18px}
    .topbar{
        flex-direction:column;
        align-items:flex-start;
        gap:12px;
        padding:18px;
    }
    .user-pill{width:100%}
    .side-nav{grid-template-columns:1fr}
    .col-8,.col-7,.col-6,.col-5,.col-4,.col-3{grid-column:span 12}
    .stats{grid-template-columns:1fr}
    .hero{padding:24px;min-height:160px}
    .hero h1{font-size:31px}
    .card{padding:18px}
    .table th,.table td{padding:12px}
    .jitsi-box{height:70vh;min-height:460px;border-radius:22px}
    button,.btn{width:100%}
    .actions,.quick-actions{align-items:stretch}
}