:root{
  --bg:#f5f6f8; --card:#fff; --ink:#1d2433; --muted:#6b7385; --line:#e3e6ec;
  --primary:#0f766e; --primary-2:#0d9488; --primary-soft:#e6f4f2;
  --danger:#b42318; --danger-soft:#fdecea; --warn:#b54708; --warn-soft:#fff4e5;
  --ok:#067647; --ok-soft:#e7f6ee; --radius:12px;
  --font:"Tajawal",system-ui,"Segoe UI",Tahoma,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.6}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:1.6rem;margin:.2em 0 .8em}
h2{font-size:1.2rem;margin:0 0 .6em}
h3{font-size:1rem;margin:1.2em 0 .5em;color:var(--muted)}
small,.muted{color:var(--muted)}
.container{max-width:1180px;margin:0 auto;padding:20px 16px 40px}
.footer{text-align:center;color:var(--muted);font-size:.8rem;padding:20px}

/* الشريط العلوي */
.topbar{background:#0b3b37;color:#fff;display:flex;align-items:center;gap:16px;padding:10px 20px;position:sticky;top:0;z-index:20;flex-wrap:wrap}
.brand{color:#fff;font-weight:800;font-size:1.1rem;display:flex;align-items:center;gap:8px}
.brand:hover{text-decoration:none}
.logo{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;background:#14b8a6;color:#fff;font-weight:800}
.nav{display:flex;align-items:center;gap:4px;margin-inline-start:auto;flex-wrap:wrap}
.nav a{color:#cfe9e5;padding:6px 12px;border-radius:8px}
.nav a:hover,.nav a.active{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}
.nav-user{color:#9fd3cc;font-size:.85rem;padding:0 8px;border-inline-start:1px solid rgba(255,255,255,.2);margin-inline-start:8px}
.menu-btn{display:none;margin-inline-start:auto;background:none;border:0;color:#fff;font-size:1.4rem;cursor:pointer}
@media (max-width:760px){
  .menu-btn{display:block}
  .nav{display:none;width:100%;flex-direction:column;align-items:stretch}
  body.nav-open .nav{display:flex}
  .nav-user{border:0;margin:0;padding:6px 12px}
}

/* البطاقات */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin-bottom:18px}
.card.narrow{max-width:640px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.card-head h2{margin:0}
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.page-head h1{margin:0}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* أزرار */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 16px;border-radius:9px;font:inherit;font-weight:500;cursor:pointer;white-space:nowrap}
.btn:hover{background:#f0f2f5;text-decoration:none}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2)}
.btn-danger{color:var(--danger);border-color:#f3c5c0}
.btn-danger:hover{background:var(--danger-soft)}
.btn-sm{padding:4px 10px;font-size:.85rem}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed}
.inline{display:inline}
label.check,label.radio{display:block;margin:6px 0;cursor:pointer}
label.check input,label.radio input{margin-inline-end:6px;vertical-align:middle}
.fname{font-size:.78rem;unicode-bidi:plaintext;text-align:right}
.actions{white-space:nowrap}
.actions .btn,.actions form{margin-inline-end:4px}

/* نماذج */
.form label{display:block;margin-bottom:12px;font-weight:500}
.form label.radio,.form label.check{font-weight:400}
input[type=text],input[type=password],input[type=number],input[type=date],input:not([type]),select,textarea{
  display:block;width:100%;margin-top:4px;padding:9px 12px;border:1px solid #cfd4dc;border-radius:9px;font:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid #99d5cd;border-color:var(--primary)}
input:disabled{background:#f3f4f6}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:0 14px}
.span2{grid-column:span 2}
@media (max-width:640px){.grid2,.grid3{grid-template-columns:1fr}.span2{grid-column:auto}}

/* تنبيهات */
.alert{padding:10px 14px;border-radius:9px;margin-bottom:14px;border:1px solid transparent}
.alert-success{background:var(--ok-soft);color:var(--ok);border-color:#b7e4c7}
.alert-error{background:var(--danger-soft);color:var(--danger);border-color:#f3c5c0}
.alert-warn{background:var(--warn-soft);color:var(--warn);border-color:#fbd9a5}
.alert-info{background:var(--primary-soft);color:#0b5d56;border-color:#bfe3de}
.badge{display:inline-block;padding:1px 9px;border-radius:20px;background:var(--primary-soft);color:var(--primary);font-size:.8rem;font-weight:700}
.badge.red{background:var(--danger-soft);color:var(--danger)}
.badge.amber{background:var(--warn-soft);color:var(--warn)}
.badge.green{background:var(--ok-soft);color:var(--ok)}
.badge.gray{background:#eef0f3;color:var(--muted)}

/* جداول */
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:right;vertical-align:middle}
.table th{font-size:.85rem;color:var(--muted);font-weight:700;background:#fafbfc}
.table tr:hover td{background:#fbfcfd}
.table td.num,.table th.num{text-align:center}

/* لوحة البداية */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.stat b{display:block;font-size:1.7rem;color:var(--primary);line-height:1.2}
.stat span{color:var(--muted);font-size:.9rem}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;color:var(--ink);display:flex;flex-direction:column;gap:2px}
.step:hover{border-color:var(--primary);text-decoration:none}
.step i{font-style:normal;width:26px;height:26px;border-radius:50%;background:var(--primary-soft);color:var(--primary);display:grid;place-items:center;font-weight:800;margin-bottom:4px}
.step span{color:var(--muted);font-size:.85rem}
@media (max-width:760px){.stats,.steps{grid-template-columns:1fr 1fr}}

/* تسجيل الدخول */
.auth-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:linear-gradient(160deg,#0b3b37,#0f766e)}
.auth-card{background:#fff;border-radius:16px;padding:28px;width:100%;max-width:400px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.auth-card.wide{max-width:640px}
.auth-card h1{display:flex;align-items:center;gap:10px;font-size:1.35rem;margin:0 0 4px}
.checks{list-style:none;padding:0;margin:10px 0 16px;display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.85rem}
.checks .ok{color:var(--ok)} .checks .bad{color:var(--danger)}

/* مفتاح الإجابة */
.key-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:4px 18px}
.key-row{display:flex;align-items:center;gap:6px;padding:3px 0;border-bottom:1px dashed var(--line)}
.key-row .qn{width:30px;font-weight:700;color:var(--muted);text-align:center}
.key-row .opts{display:flex;gap:4px}
.key-row input[type=radio]{display:none}
.key-row .opt{width:30px;height:30px;border-radius:50%;border:1.5px solid #b9c0cb;display:grid;place-items:center;cursor:pointer;font-weight:700;font-size:.9rem;user-select:none}
.key-row input[type=radio]:checked+.opt{background:var(--primary);border-color:var(--primary);color:#fff}
.key-row .mark{width:58px;margin:0 auto 0 0;padding:4px 6px;text-align:center}
.key-row.unset .qn{color:var(--danger)}

/* الاستيراد */
.dropzone{display:block;border:2px dashed #b9c0cb;border-radius:var(--radius);padding:28px;text-align:center;background:#fafbfc;cursor:pointer;transition:.15s}
.dropzone.drag,.dropzone:hover{border-color:var(--primary);background:var(--primary-soft)}
.dropzone b{display:block;font-size:1.05rem;unicode-bidi:plaintext}
.preview-table{font-size:.85rem}
.preview-table th select{min-width:110px;padding:4px 6px}
.preview-table tr.skip td{opacity:.35;text-decoration:line-through}

/* التصحيح */
.grade-layout{display:grid;grid-template-columns:340px 1fr;gap:18px;align-items:start}
@media (max-width:900px){.grade-layout{grid-template-columns:1fr}}
.progress{height:8px;background:#eef0f3;border-radius:8px;overflow:hidden;margin:8px 0}
.progress>div{height:100%;background:var(--primary);width:0;transition:width .2s}
.sheet-list{display:flex;flex-direction:column;gap:10px}
.sheet{display:grid;grid-template-columns:120px 1fr;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:10px}
.sheet.err{border-color:#f3c5c0;background:#fffafa}
.sheet.warn{border-color:#fbd9a5}
.sheet canvas,.sheet img{width:120px;border-radius:6px;border:1px solid var(--line);cursor:zoom-in;background:#fff}
.sheet .who{font-weight:700;font-size:1.05rem}
.sheet .score{font-size:1.5rem;font-weight:800;color:var(--primary)}
.sheet .meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:4px 0}
.sheet select{max-width:260px;display:inline-block}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.8);display:grid;place-items:center;z-index:100;padding:16px}
.lightbox img,.lightbox canvas{max-width:100%;max-height:92vh;background:#fff;border-radius:6px}
.lightbox[hidden]{display:none}

/* النتائج */
.pct-bar{height:6px;border-radius:6px;background:#eef0f3;overflow:hidden;min-width:60px}
.pct-bar>div{height:100%;background:var(--primary)}
.pct-bar.low>div{background:var(--danger)}
.pct-bar.mid>div{background:#d97706}
.ans-cell{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:6px;font-size:.8rem;font-weight:700;margin:1px}
.ans-ok{background:var(--ok-soft);color:var(--ok)}
.ans-bad{background:var(--danger-soft);color:var(--danger)}
.ans-blank{background:#eef0f3;color:var(--muted)}
.ans-multi{background:var(--warn-soft);color:var(--warn)}
.edit-answers{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px}
.edit-answers label{display:flex;align-items:center;gap:6px;margin:0}
.edit-answers select{padding:4px 6px;margin:0}
.dist{display:flex;gap:3px;flex-wrap:wrap}
.dist span{font-size:.75rem;padding:0 6px;border-radius:5px;background:#eef0f3}
.dist span.k{background:var(--ok-soft);color:var(--ok);font-weight:700}
dialog{border:0;border-radius:14px;padding:20px;max-width:720px;width:calc(100% - 32px)}
dialog::backdrop{background:rgba(0,0,0,.45)}