/* ==========================================================================
   DIXIIT JEE — Admin Panel · Premium UI
   ========================================================================== */
:root {
  /* Ink-navy + royal blue (logo color) + amber highlighter accent */
  --brand-1:#1d4ed8; --brand-2:#2563eb; --brand-3:#3b82f6;
  --grad: linear-gradient(135deg,#1740b8 0%,#2563eb 55%,#3b82f6 100%);
  --grad-soft: linear-gradient(135deg,#eff4ff,#eef7ff);
  --amber:#f59e0b; --amber-bg:#fef3c7;
  --ink:#0f172a; --ink-2:#334155; --muted:#64748b; --line:#e7eaf3;
  --bg:#f4f6fb; --panel:#ffffff;
  --ok:#059669; --ok-bg:#d1fae5; --bad:#dc2626; --bad-bg:#fee2e2;
  --warn:#d97706; --warn-bg:#fef3c7;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.05), 0 1px 3px rgba(15,23,42,.06);
  --shadow-md: 0 4px 16px rgba(37,99,235,.09), 0 1px 3px rgba(15,23,42,.06);
  --shadow-lg: 0 18px 50px rgba(15,23,42,.22);
  --r: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; font-family:'Inter','Segoe UI',system-ui,-apple-system,Roboto,sans-serif;
  background:var(--bg); color:var(--ink); -webkit-font-smoothing:antialiased; }
h1, h2, h3, .kpi-v, .card .v { font-family:'Sora','Inter',sans-serif; }
td, .kpi-v, .card .v, .bar-val, .lead-sc { font-variant-numeric: tabular-nums; }

::selection { background:#bfdbfe; }
*:focus-visible { outline:3px solid #bfdbfe; outline-offset:1px; border-radius:6px; }

/* ---------- Login page ---------- */
.login-wrap { min-height:100vh; display:grid; place-items:center; padding:20px; position:relative;
  background-color:#081430;
  background-image: radial-gradient(1000px 600px at 10% -10%, rgba(59,130,246,.5), transparent 60%),
                    radial-gradient(900px 600px at 110% 110%, rgba(245,158,11,.18), transparent 60%); }
.login-wrap::before { content:""; position:absolute; inset:0;
  background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1.4px);
  background-size: 26px 26px; pointer-events:none; }
.login-box { position:relative; background:rgba(255,255,255,.98); padding:38px 34px; border-radius:22px;
  width:100%; max-width:400px; box-shadow:var(--shadow-lg);
  border:1px solid rgba(255,255,255,.6); animation:rise .45s ease both; }
@keyframes rise { from { opacity:0; transform:translateY(16px);} to { opacity:1; transform:none;} }
.login-box .lg-logo { display:flex; flex-direction:column; align-items:flex-start; gap:14px; margin-bottom:18px; }
.login-box .lg-logo img { height:46px; border-radius:10px; box-shadow:var(--shadow-sm); }
.login-box h1 { margin:0; font-size:22px; letter-spacing:-.02em; }
.login-box .sub { color:var(--muted); margin:2px 0 0; font-size:13.5px; }

label { display:block; font-size:13px; font-weight:600; margin:14px 0 6px; color:var(--ink-2); }
input, select, textarea { width:100%; padding:11px 14px; border:1.5px solid var(--line);
  border-radius:10px; font-size:14px; font-family:inherit; background:#fff; color:var(--ink);
  transition:border-color .15s, box-shadow .15s; }
input:focus, select:focus, textarea:focus { outline:none; border-color:var(--brand-1);
  box-shadow:0 0 0 4px rgba(37,99,235,.13); }
textarea { min-height:120px; resize:vertical; }
input[type="checkbox"], input[type="radio"] { width:auto; box-shadow:none !important; }

.btn { display:inline-flex; align-items:center; justify-content:center; gap:7px; border:none;
  border-radius:10px; padding:10px 18px; font-size:14px; font-weight:600; cursor:pointer;
  font-family:inherit; transition:transform .12s, box-shadow .15s, background .15s; white-space:nowrap; }
.btn:active { transform:translateY(1px) scale(.99); }
.btn-primary { background:var(--grad); color:#fff; box-shadow:0 4px 14px rgba(37,99,235,.35); }
.btn-primary:hover { box-shadow:0 6px 20px rgba(37,99,235,.5); transform:translateY(-1px); }
.btn-ghost { background:#fff; color:var(--ink-2); border:1.5px solid var(--line); }
.btn-ghost:hover { border-color:#bfdbfe; background:#f7faff; color:var(--brand-1); }
.btn-danger { background:var(--bad-bg); color:var(--bad); }
.btn-danger:hover { background:var(--bad); color:#fff; }
.btn-ok { background:var(--ok-bg); color:var(--ok); }
.btn-ok:hover { background:var(--ok); color:#fff; }
.btn-sm { padding:6px 12px; font-size:12.5px; border-radius:8px; }
.btn[disabled] { opacity:.55; cursor:not-allowed; transform:none !important; }

.err { color:var(--bad); font-size:13px; margin:10px 0 0; min-height:18px; }

/* ---------- Shell ---------- */
.topbar { position:sticky; top:0; z-index:40; background:rgba(8,20,48,.97); backdrop-filter:blur(8px);
  color:#fff; padding:11px 22px; display:flex; align-items:center; justify-content:space-between;
  border-bottom:1px solid rgba(255,255,255,.07); }
.topbar .brand { display:flex; align-items:center; gap:12px; font-weight:700; letter-spacing:-.01em; }
.topbar .brand span { background:linear-gradient(90deg,#dbeafe,#fef3c7); -webkit-background-clip:text;
  background-clip:text; color:transparent; }
.topbar .brand-logo { height:36px; width:auto; max-width:170px; object-fit:contain; border-radius:9px;
  background:#fff; padding:2px 5px; box-shadow:0 2px 10px rgba(0,0,0,.35); }
.topbar .right { display:flex; align-items:center; gap:14px; font-size:13.5px; }
.topbar .right #who { color:#93c5fd; font-weight:600; }
.topbar a { color:#cbd5e1; text-decoration:none; font-weight:600; }
.topbar a:hover { color:#fff; }
.topbar .btn-ghost { background:rgba(255,255,255,.08); color:#e2e8f0; border-color:rgba(255,255,255,.14); }
.topbar .btn-ghost:hover { background:rgba(255,255,255,.16); color:#fff; }

.layout { display:flex; min-height:calc(100vh - 59px); }
.side { width:230px; flex:0 0 auto; padding:18px 12px; position:sticky; top:59px; align-self:flex-start;
  height:calc(100vh - 59px); overflow-y:auto;
  background:linear-gradient(180deg,#081430 0%,#0b1d45 60%,#0e2a63 100%); }
.side button { display:flex; align-items:center; gap:10px; width:100%; text-align:left; background:none;
  border:none; padding:12px 16px; border-radius:11px; font-size:14px; font-weight:600; color:#8b9cc4;
  cursor:pointer; margin-bottom:5px; font-family:inherit; transition:all .15s; letter-spacing:.01em; }
.side button:hover { background:rgba(255,255,255,.06); color:#dbeafe; transform:translateX(2px); }
.side button.active { background:var(--grad); color:#fff; box-shadow:0 6px 18px rgba(37,99,235,.5); }

.main { flex:1; padding:26px 32px 60px; max-width:100%; overflow-x:auto; }
.main h2 { margin:0 0 18px; font-size:22px; letter-spacing:-.02em; }

/* ---------- Cards / panels ---------- */
.cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(170px,1fr)); gap:14px; margin-bottom:22px; }
.card { background:var(--panel); border:1px solid var(--line); border-radius:var(--r); padding:18px 20px;
  box-shadow:var(--shadow-sm); transition:box-shadow .2s, transform .2s; }
.card:hover { box-shadow:var(--shadow-md); transform:translateY(-2px); }
.card .k { color:var(--muted); font-size:12.5px; font-weight:600; text-transform:uppercase; letter-spacing:.06em; }
.card .v { font-size:30px; font-weight:800; margin-top:6px; letter-spacing:-.02em;
  background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }

.panel { background:var(--panel); border:1px solid var(--line); border-radius:var(--r); padding:20px 22px;
  margin-bottom:20px; box-shadow:var(--shadow-sm); overflow-x:auto; -webkit-overflow-scrolling:touch; }
.panel h3 { margin:0 0 14px; font-size:16px; letter-spacing:-.01em; }
.row { display:flex; gap:12px; flex-wrap:wrap; align-items:flex-end; }
.row > div { flex:1; min-width:140px; }
.bar { display:flex; gap:10px; align-items:center; justify-content:space-between; margin-bottom:16px; flex-wrap:wrap; }

/* ---------- Tables ---------- */
table { width:100%; border-collapse:separate; border-spacing:0; font-size:13.5px; }
th, td { text-align:left; padding:11px 13px; border-bottom:1px solid var(--line); vertical-align:middle; }
th { color:var(--muted); font-size:11px; text-transform:uppercase; letter-spacing:.07em; font-weight:700;
  background:#f8fafd; position:sticky; top:0; }
th:first-child { border-top-left-radius:10px; } th:last-child { border-top-right-radius:10px; }
tbody tr { transition:background .12s; }
tbody tr:hover td { background:#f5f8ff; }
tbody tr:last-child td { border-bottom:none; }

.tag { display:inline-block; padding:3px 10px; border-radius:999px; font-size:11.5px; font-weight:700; letter-spacing:.02em; }
.tag.pass { background:var(--ok-bg); color:var(--ok); } .tag.fail { background:var(--bad-bg); color:#b91c1c; }
.tag.on { background:#dbeafe; color:#1d4ed8; } .tag.off { background:#f1f5f9; color:#64748b; }
.actions-cell { white-space:nowrap; display:flex; gap:6px; }

/* ---------- Modal ---------- */
.modal { position:fixed; inset:0; background:rgba(11,16,36,.6); backdrop-filter:blur(4px);
  display:none; place-items:center; padding:20px; z-index:50; }
.modal.open { display:grid; }
.modal-box { background:#fff; border-radius:20px; padding:26px 28px; width:100%; max-width:600px;
  max-height:92vh; overflow:auto; box-shadow:var(--shadow-lg); animation:pop .28s cubic-bezier(.2,.9,.3,1.2) both; }
@keyframes pop { from { opacity:0; transform:translateY(18px) scale(.97);} to { opacity:1; transform:none;} }
.modal-box h3 { margin:0 0 16px; font-size:18px; letter-spacing:-.01em; }
.modal-foot { display:flex; justify-content:flex-end; gap:10px; margin-top:20px; position:sticky; bottom:-26px;
  background:linear-gradient(transparent,#fff 30%); padding:14px 0 2px; }
.hidden { display:none !important; }
.muted { color:var(--muted); font-size:13px; }
.hint { font-size:12px; color:var(--muted); margin-top:5px; line-height:1.55; }
code { background:#dbeafe; color:#1e40af; padding:1px 6px; border-radius:6px; font-size:12px; }

.toast { position:fixed; bottom:24px; right:24px; background:#0f172a; color:#fff;
  padding:13px 20px; border-radius:12px; font-size:14px; font-weight:500; opacity:0;
  transform:translateY(14px); transition:.28s cubic-bezier(.2,.9,.3,1.2); z-index:60;
  box-shadow:var(--shadow-lg); border-left:4px solid #60a5fa; max-width:420px; }
.toast.show { opacity:1; transform:none; }
.toast.bad { border-left-color:#f87171; background:#450a0a; }

@media (max-width:820px){
  .layout { flex-direction:column; min-height:0; }
  .side { position:sticky; top:59px; z-index:35; width:100%; height:auto;
    display:flex; flex-direction:row; gap:6px; padding:10px 12px;
    overflow-x:auto; overflow-y:hidden; -webkit-overflow-scrolling:touch; }
  .side button { width:auto; flex:0 0 auto; margin-bottom:0; padding:9px 14px;
    font-size:13px; white-space:nowrap; }
  .side button:hover { transform:none; }
  .main { padding:18px 14px 60px; overflow-x:hidden; }
}

/* ---------- filters ---------- */
.filter-row { display:flex; align-items:center; gap:10px; margin:6px 0 16px; flex-wrap:wrap;
  background:#fff; border:1px solid var(--line); border-radius:12px; padding:10px 14px; box-shadow:var(--shadow-sm); }
.filter-row label { font-size:12px; color:var(--muted); font-weight:700; margin:0; text-transform:uppercase; letter-spacing:.05em; }
.filter-row select { width:auto; min-width:150px; padding:8px 12px; }

/* ---------- dashboard analytics ---------- */
.kpis { display:grid; grid-template-columns:repeat(5,1fr); gap:14px; margin:14px 0 18px; }
.kpi { background:#fff; border:1px solid var(--line); border-radius:var(--r); padding:16px 18px;
  display:flex; align-items:center; gap:14px; box-shadow:var(--shadow-sm); position:relative; overflow:hidden;
  transition:transform .18s, box-shadow .18s; }
.kpi:hover { transform:translateY(-3px); box-shadow:var(--shadow-md); }
.kpi::after { content:""; position:absolute; inset:auto 0 0 0; height:3px; background:var(--acc); opacity:.85; }
.kpi-ic { font-size:22px; line-height:1; width:46px; height:46px; border-radius:13px; display:grid; place-items:center;
  background:color-mix(in srgb, var(--acc) 12%, #fff); flex:0 0 auto; }
.kpi-v { font-size:24px; font-weight:800; line-height:1.1; color:var(--ink); letter-spacing:-.02em; }
.kpi-k { font-size:12.5px; color:var(--muted); margin-top:2px; font-weight:600; }
.kpi-sub { font-size:11px; color:#94a3b8; margin-top:2px; }

.dash-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.dash-grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin-top:16px; }
.dash-grid .panel h3, .dash-grid-2 .panel h3 { margin:0 0 12px; font-size:14px; }

.bars { display:flex; flex-direction:column; gap:10px; }
.bar-row { display:grid; grid-template-columns:120px 1fr 36px; align-items:center; gap:10px; font-size:13px; }
.bar-lab { color:#475569; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.bar-track { background:#eef0fa; border-radius:999px; height:13px; overflow:hidden; }
.bar-fill { display:block; height:100%; border-radius:999px; min-width:2px; transition:width .6s cubic-bezier(.2,.8,.3,1); }
.bar-val { text-align:right; font-weight:700; color:var(--ink); }

.donut-wrap { display:flex; align-items:center; gap:22px; }
.donut { width:132px; height:132px; border-radius:50%; display:grid; place-items:center; flex:0 0 auto;
  box-shadow:inset 0 0 0 1px rgba(15,23,42,.05); }
.donut-hole { width:88px; height:88px; background:#fff; border-radius:50%; display:grid; place-items:center;
  text-align:center; box-shadow:var(--shadow-sm); }
.donut-pct { font-size:24px; font-weight:800; color:var(--ink); display:block; }
.donut-cap { font-size:11px; color:var(--muted); }
.donut-leg { display:flex; flex-direction:column; gap:8px; font-size:13px; color:#475569; }
.donut-leg .sw, .sw { display:inline-block; width:12px; height:12px; border-radius:4px; margin-right:7px; vertical-align:middle; }

.lead-row { display:flex; align-items:center; gap:12px; padding:9px 0; border-bottom:1px solid #f1f3fb; font-size:14px; }
.lead-row:last-child { border-bottom:0; }
.lead-rk { width:28px; text-align:center; font-size:17px; }
.lead-nm { flex:1; }
.lead-sc { font-weight:700; color:var(--ink); }

@media (max-width:1100px){ .kpis{ grid-template-columns:repeat(3,1fr); } }
@media (max-width:900px){ .kpis{ grid-template-columns:repeat(2,1fr); } .dash-grid, .dash-grid-2{ grid-template-columns:1fr; } }

/* ---------- chips (subjects / classes / types) ---------- */
.chips { display:flex; flex-wrap:wrap; gap:8px; margin:6px 0 10px; }
.chip { display:inline-flex; align-items:center; gap:7px; background:#fff; position:relative;
  border:1.5px solid var(--line); border-radius:999px; padding:7px 14px; font-size:13px;
  font-weight:600; cursor:pointer; margin:0; user-select:none; color:var(--ink-2); transition:all .13s; }
.chip:hover { border-color:#93c5fd; background:#f5faff; transform:translateY(-1px); }
.chip input { accent-color:var(--brand-1); margin:0; }
.chip:has(input:checked) { background:var(--grad-soft); border-color:var(--brand-1); color:#1e40af;
  box-shadow:0 2px 8px rgba(37,99,235,.18); }
.chips.scrolly { max-height:190px; overflow-y:auto; border:1.5px solid var(--line); border-radius:12px;
  padding:10px; background:#f8fafd; }
pre { background:#f4f5fb; border-radius:10px; padding:12px; font-size:12.5px; max-height:260px; overflow:auto; }

/* ---------- upload dropzone ---------- */
.dropzone { border:2px dashed #93c5fd; border-radius:16px; background:var(--grad-soft);
  padding:26px 18px; text-align:center; cursor:pointer; transition:all .18s; margin:6px 0 4px; }
.dropzone:hover, .dropzone.drag { border-color:var(--brand-1); background:#eff6ff;
  box-shadow:0 6px 22px rgba(37,99,235,.16); transform:scale(1.005); }
.dropzone .dz-ic { font-size:34px; display:block; margin-bottom:6px; }
.dropzone .dz-t { font-weight:700; font-size:14.5px; color:#1e40af; }
.dropzone .dz-s { font-size:12.5px; color:var(--muted); margin-top:4px; }
.dropzone input[type=file] { display:none; }

/* ---------- responsive: tablets & phones ---------- */
@media (max-width:900px){
  .panel table th, .panel table td { white-space:nowrap; }
  .panel table td:nth-child(n) { max-width:260px; overflow:hidden; text-overflow:ellipsis; }
}
@media (max-width:600px){
  .topbar { padding:9px 12px; }
  .topbar .brand { gap:8px; font-size:13.5px; }
  .topbar .brand span { display:none; }
  .topbar .brand-logo { height:30px; }
  .topbar .right { gap:8px; font-size:12.5px; }
  .topbar .right #who { display:none; }
  .side { top:51px; }
  .main { padding:14px 10px 60px; }
  .main h2, .bar h2 { font-size:19px; }
  .bar { gap:8px; }
  .bar .btn { padding:8px 12px; font-size:13px; }
  .kpis { grid-template-columns:repeat(2,1fr); gap:10px; }
  .kpi { padding:12px 13px; gap:10px; }
  .kpi-ic { width:38px; height:38px; font-size:18px; border-radius:10px; }
  .kpi-v { font-size:19px; }
  .cards { grid-template-columns:repeat(2,1fr); gap:10px; }
  .card { padding:13px 15px; }
  .card .v { font-size:23px; }
  .panel { padding:14px; }
  .dash-grid, .dash-grid-2 { gap:12px; }
  .donut-wrap { flex-direction:column; align-items:flex-start; gap:14px; }
  .bar-row { grid-template-columns:88px 1fr 32px; gap:7px; font-size:12px; }
  .filter-row { padding:8px 10px; gap:8px; }
  .filter-row select { flex:1 1 130px; min-width:0; }
  .modal { padding:10px; }
  .modal-box { padding:20px 16px; border-radius:16px; max-height:94vh; }
  .modal-foot { bottom:-16px; }
  .row > div { min-width:100%; }
  .toast { left:12px; right:12px; bottom:12px; max-width:none; }
  .actions-cell .btn-sm { padding:6px 9px; font-size:12px; }
  .login-box { padding:28px 20px; }
}