/* ============================================================
   APTECH UGANDA Learning Portal — Theme
   Brand: red #E4002B + ink black, clean & responsive.
   ============================================================ */
:root{
  --red:#E4002B; --red-d:#b80023; --red-l:#ff3355;
  --ink:#15171c; --ink-2:#222631; --slate:#5b6472; --muted:#8b93a3;
  --line:#e7e9ef; --bg:#f4f6fb; --card:#ffffff; --white:#fff;
  --ok:#16a34a; --ok-bg:#e9f7ef; --warn:#d98300; --warn-bg:#fdf3e2;
  --bad:#d4172b; --bad-bg:#fdeaec; --info:#2563eb; --info-bg:#e8f0fe;
  --blue:#2563eb; --green:#16a34a; --amber:#e08600; --purple:#7c3aed; --teal:#0d9488;
  --radius:14px; --radius-sm:9px; --shadow:0 1px 3px rgba(20,23,28,.06),0 8px 24px rgba(20,23,28,.05);
  --shadow-sm:0 1px 2px rgba(20,23,28,.08);
  --sidebar:264px;
  --font:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --display:'Sora','Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--ink);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-family:var(--display);font-weight:700;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:1.55rem}h2{font-size:1.3rem}h3{font-size:1.05rem}
p{margin:.4rem 0}
small{font-size:.8rem}
.muted{color:var(--muted)}
.small{font-size:.82rem}
.clamp{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ta-right{text-align:right}

/* ---------- Brand ---------- */
.brand-mark{display:flex;align-items:center;gap:12px;line-height:1}
.brand-words{display:flex;flex-direction:column;line-height:1}
.brand-logo{font-family:var(--display);font-weight:800;font-size:1.4rem;letter-spacing:-.04em;color:var(--red);text-transform:lowercase}
.brand-sub{font-size:.6rem;font-weight:700;letter-spacing:.16em;color:var(--ink);margin-top:4px;text-transform:uppercase}
.brand-mark.big .brand-logo{font-size:2.6rem}
.brand-mark.big .brand-sub{font-size:.8rem;letter-spacing:.3em}

/* ---------- Layout ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar);background:var(--ink);color:#cbd2e0;position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;z-index:40}
.sidebar .brand{padding:22px 22px 14px}
.sidebar .brand .brand-logo{color:#fff}
.sidebar .brand .brand-sub{color:#7f8aa3}
.nav{flex:1;overflow-y:auto;padding:8px 12px}
.nav a{display:flex;align-items:center;gap:11px;padding:10px 13px;border-radius:10px;color:#aeb6c7;font-weight:500;font-size:.92rem;margin-bottom:2px;transition:.15s}
.nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.nav a.active{background:var(--red);color:#fff;box-shadow:0 6px 16px rgba(228,0,43,.35)}
.nav a.active i{opacity:1}
.nav i{width:18px;height:18px;display:inline-block;opacity:.7;flex:none}
.nav-group{font-size:.66rem;text-transform:uppercase;letter-spacing:.13em;color:#69718a;padding:16px 13px 6px;font-weight:700}
.sidebar-foot{padding:14px 22px;font-size:.72rem;color:#69718a;border-top:1px solid rgba(255,255,255,.07)}

.main{flex:1;margin-left:var(--sidebar);display:flex;flex-direction:column;min-width:0}
.topbar{height:64px;background:var(--card);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:16px;padding:0 24px;position:sticky;top:0;z-index:30}
.topbar-title{font-weight:700;font-size:1.05rem;flex:1}
.topbar-right{display:flex;align-items:center;gap:14px}
.content{padding:28px;max-width:1240px;width:100%;margin:0 auto}

.hamburger{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:6px}
.hamburger span{width:22px;height:2px;background:var(--ink);border-radius:2px}

/* ---------- User menu ---------- */
.usermenu{position:relative}
.user-btn{display:flex;align-items:center;gap:9px;background:none;border:1px solid var(--line);border-radius:30px;padding:5px 12px 5px 5px;cursor:pointer;font-family:inherit}
.user-btn:hover{background:var(--bg)}
.user-name{font-weight:600;font-size:.88rem}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--red);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.78rem;flex:none}
.avatar.sm{width:28px;height:28px;font-size:.7rem}
.dropdown{position:absolute;right:0;top:48px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);width:230px;padding:8px;display:none}
.dropdown.open{display:block}
.dropdown-head{padding:10px 12px;border-bottom:1px solid var(--line);margin-bottom:6px;display:flex;flex-direction:column;gap:2px}
.dropdown a,.dropdown button{display:block;width:100%;text-align:left;padding:9px 12px;border-radius:8px;border:none;background:none;font-family:inherit;font-size:.9rem;cursor:pointer;color:var(--ink)}
.dropdown a:hover,.dropdown button:hover{background:var(--bg)}
.link-danger{color:var(--bad)!important;font-weight:600}

.role-pill{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:4px 10px;border-radius:20px;background:var(--bg);color:var(--slate)}
.role-admin{background:#fdeaec;color:var(--red)}
.role-tutor{background:#e8f0fe;color:var(--blue)}
.role-student{background:#e9f7ef;color:var(--green)}

/* ---------- Page head ---------- */
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.page-head h1{margin-bottom:2px}
.head-actions{display:flex;gap:10px}
.back-link{display:inline-flex;align-items:center;gap:4px;color:var(--muted);font-size:.85rem;font-weight:600;margin-bottom:6px}
.back-link:hover{color:var(--red)}

/* ---------- Cards & grids ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);margin-bottom:22px}
.card.no-pad{padding:0;overflow:hidden}
.card.narrow{max-width:560px}
.card-title{margin-bottom:14px}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.card-head h3{font-size:1rem}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.empty{color:var(--muted);text-align:center;padding:26px 10px;font-size:.92rem}
.empty.pad{padding:34px}

/* ---------- Stats ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}
.stat-grid.wide{grid-template-columns:repeat(6,1fr)}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;align-items:center;gap:14px;box-shadow:var(--shadow-sm)}
.stat b{font-size:1.5rem;font-weight:800;display:block;line-height:1}
.stat span{font-size:.78rem;color:var(--muted)}
.stat-ic{width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;flex:none}
.stat-ic i{width:20px;height:20px}
.ic-red{background:#fdeaec;color:var(--red)}.ic-blue{background:#e8f0fe;color:var(--blue)}
.ic-green{background:#e9f7ef;color:var(--green)}.ic-amber{background:#fdf3e2;color:var(--amber)}
.ic-purple{background:#f1ebfd;color:var(--purple)}.ic-teal{background:#e3f6f3;color:var(--teal)}
.ic-muted{background:#eef0f5;color:var(--muted)}

/* ---------- Row items ---------- */
.row-item{display:flex;align-items:center;gap:13px;padding:12px 4px;border-bottom:1px solid var(--line)}
.row-item:last-child{border-bottom:none}
a.row-item:hover{background:var(--bg);border-radius:10px;padding-left:10px;padding-right:10px}
.row-ic{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex:none}
.row-ic i{width:18px;height:18px}
.row-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.row-main strong{font-size:.92rem;font-weight:600}
.row-main small{color:var(--muted);font-size:.78rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pulse{animation:pulse 1.6s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(228,0,43,.4)}50%{box-shadow:0 0 0 6px rgba(228,0,43,0)}}

/* ---------- Course cards ---------- */
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.course-card{border:1px solid var(--line);border-radius:12px;padding:16px;background:linear-gradient(180deg,#fff,#fbfcfe)}
.course-code{font-size:.7rem;font-weight:800;color:var(--red);letter-spacing:.05em;margin-bottom:6px}
.course-card h4{font-size:.98rem;margin-bottom:6px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-family:inherit;font-weight:600;font-size:.9rem;padding:10px 18px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 6px 16px rgba(228,0,43,.25)}
.btn-primary:hover{background:var(--red-d)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--red);color:var(--red)}
.btn-danger{background:var(--bad-bg);color:var(--bad);border-color:transparent}
.btn-danger:hover{background:var(--bad);color:#fff}
.btn-success{background:var(--ok-bg);color:var(--ok)}
.btn-success:hover{background:var(--ok);color:#fff}
.btn-block{width:100%}
.btn-sm{padding:7px 13px;font-size:.82rem;border-radius:8px}
.btn-xs{padding:5px 10px;font-size:.74rem;border-radius:7px}
.link{color:var(--red);font-weight:600;font-size:.86rem}
.link:hover{text-decoration:underline}

/* ---------- Forms ---------- */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.field>span{font-weight:600;font-size:.85rem;color:var(--ink-2)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
input,select,textarea{font-family:inherit;font-size:.92rem;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);width:100%;transition:.15s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(228,0,43,.12)}
textarea{resize:vertical}
.check{display:flex;align-items:flex-start;gap:10px;margin:8px 0 18px;font-size:.9rem;cursor:pointer}
.check input{width:auto;margin-top:2px}
.pw-wrap{position:relative}
.pw-toggle{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--muted);font-size:.75rem;cursor:pointer;font-weight:600;text-transform:uppercase}

/* ---------- Tables ---------- */
.table{width:100%;border-collapse:collapse;font-size:.88rem}
.table thead th{text-align:left;padding:13px 16px;font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);border-bottom:1px solid var(--line);background:#fafbfd;font-weight:700}
.table tbody td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:middle}
.table tbody tr:last-child td{border-bottom:none}
.table tbody tr:hover{background:#fafbfd}
.mini-table{width:100%;border-collapse:collapse}
.mini-table td{padding:9px 4px;border-bottom:1px solid var(--line);font-size:.85rem}
.mini-table tr:last-child td{border-bottom:none}
.u-cell{display:flex;align-items:center;gap:9px}
.actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.actions form{margin:0}
.filter-bar{display:flex;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line);background:#fafbfd;flex-wrap:wrap}
.filter-bar input,.filter-bar select{width:auto;flex:0 1 auto}
.filter-bar input[type=search]{flex:1;min-width:180px}

/* ---------- Badges / pills / tags ---------- */
.badge{display:inline-block;font-size:.7rem;font-weight:700;padding:3px 9px;border-radius:20px;text-transform:capitalize}
.b-ok{background:var(--ok-bg);color:var(--ok)}.b-warn{background:var(--warn-bg);color:var(--warn)}
.b-bad{background:var(--bad-bg);color:var(--bad)}.b-info{background:var(--info-bg);color:var(--info)}
.b-muted{background:#eef0f5;color:var(--slate)}.b-live{background:var(--red);color:#fff}
.tag{display:inline-block;background:var(--bg);color:var(--slate);font-size:.74rem;font-weight:600;padding:3px 9px;border-radius:6px;text-transform:capitalize}
.pill{display:inline-block;background:var(--bg);color:var(--slate);font-weight:700;font-size:.78rem;padding:3px 11px;border-radius:20px}
.pill.ok{background:var(--ok-bg);color:var(--ok)}.pill.warn{background:var(--warn-bg);color:var(--warn)}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--muted)}
.dot.ok{background:var(--ok)}

/* ---------- Bars / feed ---------- */
.bar-row{display:flex;align-items:center;gap:12px;margin-bottom:12px;font-size:.86rem}
.bar-row span{width:80px;color:var(--slate)}
.bar-row b{width:34px;text-align:right}
.bar{flex:1;height:9px;background:var(--bg);border-radius:6px;overflow:hidden}
.bar>span{display:block;height:100%;background:var(--red);border-radius:6px}
.bar>span.b-blue{background:var(--blue)}.bar>span.b-red{background:var(--red)}
.feed{list-style:none;margin:0;padding:0}
.feed li{display:flex;align-items:center;gap:8px;padding:9px 0;border-bottom:1px solid var(--line);font-size:.85rem}
.feed li:last-child{border-bottom:none}
.feed-act{font-weight:600;text-transform:capitalize}
.feed time{margin-left:auto;color:var(--muted);font-size:.76rem}

/* ---------- Alerts ---------- */
.alert{display:flex;align-items:flex-start;gap:10px;padding:13px 16px;border-radius:11px;margin-bottom:18px;font-size:.9rem;border:1px solid transparent}
.alert-ok{background:var(--ok-bg);color:#0f7a37;border-color:#bfe6cd}
.alert-bad{background:var(--bad-bg);color:#a01122;border-color:#f3c2c8}
.alert-warn{background:var(--warn-bg);color:#9a6300;border-color:#f3dcae}
.alert-info{background:var(--info-bg);color:#1d4fc4;border-color:#c4d6fb}
.alert span{flex:1}
.alert code{background:rgba(0,0,0,.07);padding:1px 6px;border-radius:5px;font-size:.85em}
.alert-x{background:none;border:none;font-size:1.3rem;line-height:1;cursor:pointer;color:inherit;opacity:.6}
.alert-x:hover{opacity:1}

/* ---------- Video grid & cards ---------- */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.vcard{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow-sm);transition:.15s;display:block}
.vcard:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.vthumb{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,var(--ink),#2c3240);display:flex;align-items:center;justify-content:center}
.vthumb i{width:46px;height:46px;color:rgba(255,255,255,.85)}
.vdur{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.7);color:#fff;font-size:.7rem;font-weight:600;padding:2px 7px;border-radius:5px}
.vprogress{position:absolute;left:0;bottom:0;width:100%;height:4px;background:rgba(255,255,255,.25)}
.vprogress>span{display:block;height:100%;background:var(--red)}
.vbody{padding:13px 15px;display:flex;flex-direction:column;gap:5px}
.vbody strong{font-size:.92rem;line-height:1.3}
.vbody .badge{align-self:flex-start}

/* ---------- Video player (protected) ---------- */
.player-wrap{margin-bottom:22px;background:#000}
.player-shell{position:relative;width:100%;aspect-ratio:16/9;background:#000;overflow:hidden;border-radius:var(--radius)}
.lesson-video{width:100%;height:100%;display:block;background:#000}
.wm{position:absolute;top:14%;left:8%;color:rgba(255,255,255,.34);font-size:.8rem;font-weight:600;pointer-events:none;text-shadow:0 1px 3px rgba(0,0,0,.6);user-select:none;z-index:5;transition:top .9s linear,left .9s linear;white-space:nowrap}
.player-veil{position:absolute;inset:0;background:rgba(8,9,12,.94);display:flex;align-items:center;justify-content:center;text-align:center;color:#fff;z-index:8}
.player-veil i{width:34px;height:34px;color:var(--red-l);margin-bottom:8px}
.player-veil p{font-weight:700;margin:4px 0}
.player-veil small{color:#9aa3b5}

/* progress */
.progress-row{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.progress-bar{flex:1;height:10px;background:var(--bg);border-radius:6px;overflow:hidden}
.progress-bar>span{display:block;height:100%;background:var(--red);transition:width .4s}
.protect-note,.security-note,.upload-progress{margin-top:14px}
.protect-note,.security-note{display:flex;gap:10px;background:var(--bg);border-radius:10px;padding:12px 14px;font-size:.8rem;color:var(--slate)}
.protect-note i,.security-note i{width:18px;height:18px;color:var(--red);flex:none;margin-top:1px}

/* ---------- Auth ---------- */
.auth-body{background:var(--ink);font-family:'Plus Jakarta Sans',var(--font)}
.auth-body h1,.auth-body h2,.auth-body .brand-logo{font-family:'Sora','Plus Jakarta Sans',var(--font)}
.auth-split{display:grid;grid-template-columns:1.05fr .95fr;min-height:100vh}

/* Brand logo tile */
.brand-tile{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:16px;
  background:#fff;color:var(--red);font-family:'Sora',sans-serif;font-weight:800;font-size:2rem;line-height:1;
  box-shadow:0 8px 22px rgba(0,0,0,.18);flex:none}
.brand-tile.sm{width:42px;height:42px;border-radius:12px;font-size:1.55rem;background:var(--red);color:#fff;box-shadow:0 8px 20px rgba(228,0,43,.3)}
.brand-lockup,.auth-card-brand{display:flex;align-items:center;gap:14px}
.brand-words{display:flex;flex-direction:column;line-height:1}

/* Hero (Aptech red) */
.auth-hero{position:relative;overflow:hidden;display:flex;align-items:center;padding:64px;color:#fff;
  background:linear-gradient(150deg,var(--red) 0%,var(--red-d) 55%,#7a0019 100%)}
.auth-hero-bg{position:absolute;inset:0;pointer-events:none}
.auth-hero-bg .orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55}
.auth-hero-bg .orb-1{width:380px;height:380px;background:#ff5a78;top:-90px;right:-80px;animation:float 14s ease-in-out infinite}
.auth-hero-bg .orb-2{width:300px;height:300px;background:#5e000f;bottom:-100px;left:-60px;opacity:.6;animation:float 18s ease-in-out infinite reverse}
.auth-hero-bg .grid{position:absolute;inset:0;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:54px 54px;-webkit-mask-image:radial-gradient(circle at 70% 30%,#000,transparent 72%);mask-image:radial-gradient(circle at 70% 30%,#000,transparent 72%)}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(-26px,22px)}}
.auth-hero-inner{position:relative;max-width:430px;z-index:1}
.auth-hero .brand-tile{background:#fff;color:var(--red)}
.auth-hero .brand-logo{color:#fff;font-size:1.7rem}
.auth-hero .brand-sub{color:rgba(255,255,255,.78);letter-spacing:.32em}
.auth-hero h1{color:#fff;font-size:3rem;font-weight:800;line-height:1.05;letter-spacing:-.03em;margin:40px 0 16px}
.auth-hero p{color:rgba(255,255,255,.9);font-size:1.05rem;line-height:1.55;margin-bottom:30px}
.hero-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.hero-points li{display:flex;align-items:center;gap:13px;color:#fff;font-size:.96rem;font-weight:500}
.hp-ic{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  background:rgba(255,255,255,.15);backdrop-filter:blur(2px);flex:none}
.hp-ic i{width:17px;height:17px;color:#fff}
.hero-foot{margin:40px 0 0;color:rgba(255,255,255,.62)!important;font-size:.78rem}
/* staggered reveal */
.auth-hero-inner>*{opacity:0;animation:rise .7s cubic-bezier(.2,.7,.2,1) forwards}
.auth-hero-inner>.brand-lockup{animation-delay:.05s}
.auth-hero-inner>h1{animation-delay:.14s}
.auth-hero-inner>p{animation-delay:.22s}
.auth-hero-inner>.hero-points{animation-delay:.3s}
.auth-hero-inner>.hero-foot{animation-delay:.4s}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* Form side */
.auth-form-side{background:var(--bg);display:flex;align-items:center;justify-content:center;padding:40px;
  background-image:radial-gradient(circle at 100% 0%,rgba(228,0,43,.05),transparent 40%)}
.auth-stage{width:100%;max-width:430px}
.auth-card{background:#fff;border-radius:20px;box-shadow:var(--shadow);padding:42px 40px;position:relative;overflow:hidden;
  border:1px solid var(--line);animation:rise .6s cubic-bezier(.2,.7,.2,1) both;animation-delay:.12s}
.auth-card:before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,var(--red),var(--red-l))}
.auth-card-brand{display:none;margin-bottom:24px}
.auth-card-head{margin-bottom:26px}
.auth-card h2{font-size:1.7rem;letter-spacing:-.02em}
.auth-card-head p{margin-top:6px;font-size:.95rem}
.auth-card .field{margin-bottom:18px}
.auth-card .field>span{font-size:.82rem;letter-spacing:.01em}
.auth-card input{padding:13px 14px;border-radius:11px;font-size:.95rem;background:#fbfbfd}
.auth-card input:focus{background:#fff}
.btn-lg{padding:14px 18px;font-size:.98rem;border-radius:12px;margin-top:4px}
.auth-foot{margin-top:22px;text-align:center}
.security-note{margin-top:22px}

/* ---------- Errors ---------- */
.error-body{background:var(--bg);display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px}
.error-card{background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:48px;text-align:center;max-width:440px}
.error-card .brand-mark{align-items:center;margin-bottom:18px}
.error-code{font-size:4rem;font-weight:800;color:var(--red);line-height:1;letter-spacing:-.04em}
.error-card h1{margin:6px 0 8px}
.error-card .btn{margin-top:20px}

/* ---------- Icons (inline SVG via mask) ---------- */
i[data-i]{background-color:currentColor;-webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center;display:inline-block}

/* ---------- Backdrop / responsive ---------- */
.nav-backdrop{display:none;position:fixed;inset:0;background:rgba(8,9,12,.5);z-index:35}
.nav-backdrop.show{display:block}
@media(max-width:1024px){
  .stat-grid.wide{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:860px){
  .sidebar{transform:translateX(-100%);transition:transform .25s}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0}
  .hamburger{display:flex}
  .grid-2{grid-template-columns:1fr}
  .auth-split{grid-template-columns:1fr}
  .auth-hero{display:none}
  .auth-card-brand{display:flex}
  .auth-form-side{padding:24px 18px;align-items:flex-start;padding-top:48px}
  .auth-card{padding:32px 24px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid.wide{grid-template-columns:repeat(2,1fr)}
  .user-name{display:none}
  .field-row{grid-template-columns:1fr}
  .content{padding:18px}
}
@media(max-width:480px){
  .stat-grid{grid-template-columns:1fr 1fr}
  .page-head{align-items:flex-start}
}