:root{
  --bg:#111827;
  --card:#020617;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --line:#1f2937;
  --ok:#22c55e;
  --accent:#0ea5e9;
  --btn:#0f172a;
  --danger:#f97373;
  --dangertext:#ffffff;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
}
input,textarea,select,button{font:inherit}
code{
  background:rgba(0,0,0,.35);
  padding:2px 6px;
  border-radius:8px;
  border:1px solid rgba(255,255,255,.06);
  color:var(--text);
  white-space:normal;
}
.muted{color:var(--muted);font-size:12px}

.app{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{
  width:260px;
  background:#020617;
  color:var(--text);
  padding:14px;
  display:flex;
  flex-direction:column;
  gap:14px;
  border-right:1px solid var(--line);
}
.brand{
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#0b1220;
}
.brand-title{font-weight:700;font-size:16px}
.brand-sub{font-size:12px;color:var(--muted);margin-top:2px}
.nav{display:flex;flex-direction:column;gap:8px}
.nav-item{
  width:100%;
  text-align:left;
  border:1px solid var(--line);
  background:var(--btn);
  color:var(--text);
  border-radius:12px;
  padding:10px 12px;
  cursor:pointer;
  transition:border-color .18s ease, box-shadow .18s ease, transform .08s ease, background .18s ease;
}
.nav-item:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(0,0,0,.35)}
.nav-item.active{
  background:#ffffff;
  color:#111827;
  font-weight:700;
  border-color:#fff;
}
.nav-mobile{display:none}
.sidebar-footer{
  margin-top:auto;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:12px;
  color:var(--muted);
  background:#0b1220;
}
.sidebar-footer code{color:var(--text)}

.nav-items{
  width:100%;
  text-align:left;
  border:1px solid var(--line);
  background:var(--btn);
  color:var(--text);
  border-radius:12px;
  padding:10px 12px;
  cursor:pointer;
  transition:border-color .18s ease, box-shadow .18s ease, transform .08s ease, background .18s ease;
}
.nav-items:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(0,0,0,.35)}
.nav-items.active{
  background:#ffffff;
  color:#111827;
  font-weight:700;
  border-color:#fff;
}

/* Content */
.content{flex:1;padding:18px}
.topbar{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px;
  margin-bottom:16px;
}
.h2{margin:0 0 4px 0;font-size:28px;font-weight:800;letter-spacing:.2px}
.status{min-width:220px;text-align:right;color:var(--muted)}

/* Cards */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px 18px;
  box-shadow:0 10px 30px rgba(0,0,0,.20);
}
.card h3{margin:0 0 12px 0;font-size:15px}
.sub{border-top:1px solid var(--line);margin-top:12px;padding-top:12px}
.sub h4{margin:0 0 10px 0;font-size:14px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.row > *{min-width:180px}
.chk{display:flex;gap:6px;align-items:center;color:var(--text)}

/* Views */
.view{display:none}
.view.active{display:block}

/* Inputs */
input,textarea,select{
  background:#020617;
  border:1px solid var(--line);
  color:var(--text);
  border-radius:10px;
  padding:9px 11px;
  outline:none;
  font-size:14px;
}
textarea{width:100%;height:90px}
input::placeholder,textarea::placeholder{color:#6b7280}
input:focus,textarea:focus,select:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 1px #0ea5e933;
}

/* Buttons */
.btn{
  cursor:pointer;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--btn);
  color:var(--text);
  padding:9px 13px;
  transition:border-color .18s ease, box-shadow .18s ease, transform .08s ease, background .18s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(0,0,0,.45)}
.btn.ok{background:#22c55e1a;border-color:#22c55e55;color:#22c55e}
.btn.danger{background:#f973731a;border-color:#f9737355;color:var(--danger)}
.btn.dangerx{background:#f973731a;border-color:#f973731a;color:var(--dangertext)}

/* Tables */
table{width:100%;border-collapse:collapse;margin-top:10px}
th,td{
  border-bottom:1px solid var(--line);
  padding:10px 8px;
  text-align:left;
  vertical-align:top;
  font-size:13px;
}
th{
  color:var(--muted);
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.04em;
}
tr:hover td{background:#0b1220}
td code{word-break:break-all}

/* reseller actions */
.actions-row{gap:8px;flex-wrap:wrap}
.actions-row .btn{min-width:auto}

/* Small helpers */
#view-resellers .sub,
#view-users .sub,
#view-channels .sub{margin-bottom:14px}

@media(max-width:900px){
  .app{flex-direction:column}
  .sidebar{width:100%;border-right:0;border-bottom:1px solid var(--line)}
  .nav{flex-direction:row;flex-wrap:wrap}
  .nav-item{width:auto}
  .status{text-align:left;min-width:0}
}

@media(max-width:768px){
  .hamburger{display:none}
#hamburger{display:block !important}

  .sidebar .nav,.sidebar .nav-mobile,.sidebar .sidebar-footer{display:none}
  .sidebar.open .sidebar-footer{display:none !important}
  .sidebar.open{overflow-y:auto;max-height:calc(var(--vh,1vh)*100)}
  .sidebar.open .nav-mobile{
    display:flex !important;
    flex-direction:column;
    gap:6px;
    padding:8px;
  }
  .nav-cat-btn{
    display:flex;
    align-items:center;
    gap:10px;
    width:100%;
    min-height:44px;
    padding:10px 14px;
    font-size:14px;
    border:1px solid var(--line);
    background:var(--btn);
    color:var(--text);
    border-radius:10px;
    cursor:pointer;
    text-decoration:none;
    transition:border-color .15s,background .15s;
  }
  .nav-cat-btn .nav-arrow{margin-left:auto;transition:transform .2s;font-size:12px;color:var(--muted)}
  .nav-cat.open>.nav-cat-btn .nav-arrow{transform:rotate(90deg)}
  .nav-cat.open>.nav-cat-btn{border-color:var(--accent)}
  .nav-sub{margin:4px 0 0 14px;padding-left:10px;border-left:2px solid var(--line);display:none;flex-direction:column;gap:3px}
  .nav-cat.open>.nav-sub{display:flex}
  .nav-sub .nav-item{
    display:flex;
    align-items:center;
    gap:8px;
    width:100%;
    min-height:38px;
    padding:8px 12px;
    font-size:13px;
    border:none;
    border-radius:8px;
  }
  .nav-sub .nav-item:hover{background:rgba(255,255,255,.05)}
  .nav-sub .nav-item .nav-icon{font-size:16px}

  .row > *{min-width:120px}

  .topbar{flex-direction:column;align-items:flex-start}
  .status{text-align:left;min-width:0;width:100%}

  #channels,#users,#hidden,#resellers{overflow-x:auto}

  .btn,.nav-item,.nav-items{min-height:44px;padding:10px 14px;font-size:15px}
  input,textarea,select{padding:11px 13px;font-size:16px}
}

@media(max-width:520px){
  .row > *{min-width:100%}
  .sidebar{padding:10px}
  .content{padding:12px}
  .h2{font-size:22px}

  /* Tablas → tarjetas en móvil */
  #channels table, #users table, #resellers table,
  #channels thead, #users thead, #resellers thead,
  #channels tbody, #users tbody, #resellers tbody,
  #channels tr, #users tr, #resellers tr{display:block}
  #channels th, #users th, #resellers th{display:none}
  #channels tr, #users tr, #resellers tr{
    border:1px solid var(--line);
    border-radius:10px;
    margin-bottom:10px;
    padding:8px;
    background:var(--card);
  }
  #channels td, #users td, #resellers td{
    display:flex;
    padding:4px 6px;
    border:none;
    font-size:12px;
    word-break:break-word;
    gap:6px;
  }
  #channels td:before, #users td:before, #resellers td:before{
    content:attr(data-label);
    font-weight:700;
    text-transform:uppercase;
    font-size:10px;
    color:var(--muted);
    min-width:60px;
    flex-shrink:0;
  }
  #channels td[data-label=""]:before,
  #users td[data-label=""]:before,
  #resellers td[data-label=""]:before{display:none}

  #channels td.col-mpd{max-width:100%;overflow:hidden}
}