:root{
  --bg:#f3f6fb;
  --surface:#ffffff;
  --surface-2:#f8fbff;
  --text:#0f172a;
  --muted:#64748b;
  --line:#dbe4ef;
  --primary:#2563eb;
  --primary-2:#1d4ed8;
  --primary-soft:#eff6ff;
  --success:#16a34a;
  --success-soft:#eaf8ef;
  --danger:#dc2626;
  --danger-soft:#feecec;
  --shadow:0 14px 40px rgba(15,23,42,.06);
  --radius:24px;
  --drawer:#ffffff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Inter,Cairo,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
body.rtl{font-family:Cairo,Inter,sans-serif}
a{text-decoration:none;color:inherit}
button,input,select,textarea{font:inherit}
img{max-width:100%}
.container{max-width:1280px;margin:0 auto;padding:0 20px}
.site-shell{min-height:100vh}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:82px}
.brand{display:flex;align-items:center;gap:14px;font-size:18px;font-weight:800}
.brand-mark{width:46px;height:46px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:var(--shadow)}
.brand-mark.small{width:42px;height:42px;border-radius:14px}
.brand-text{font-size:18px}
.desktop-nav{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}
.top-link{padding:10px 14px;border-radius:14px;color:var(--muted);font-weight:600}
.top-link:hover,.top-link.active{color:var(--text);background:var(--surface)}
.topbar-actions{display:flex;align-items:center;gap:10px}
.menu-toggle,.lang-btn,.theme-btn,.secondary-btn,.primary-btn,.ghost-btn,.side-close{border:1px solid var(--line);background:var(--surface);color:var(--text);padding:11px 14px;border-radius:16px;cursor:pointer;transition:.2s ease}
.primary-btn{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border:none;box-shadow:0 12px 26px rgba(37,99,235,.22)}
.secondary-btn:hover,.ghost-btn:hover,.lang-btn:hover,.theme-btn:hover,.menu-toggle:hover,.side-close:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(15,23,42,.06)}
.badge{display:inline-flex;align-items:center;justify-content:center;padding:8px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700}
.page-shell{padding:28px 20px 48px}
.flash{padding:16px 18px;border-radius:18px;margin-bottom:18px;border:1px solid var(--line)}
.flash.success{background:var(--success-soft);border-color:#b9e4c5;color:#166534}.flash.error{background:var(--danger-soft);border-color:#fecaca;color:#991b1b}
.side-drawer{position:fixed;top:92px;right:22px;width:320px;max-width:calc(100vw - 32px);background:var(--drawer);border:1px solid var(--line);border-radius:28px;box-shadow:0 30px 80px rgba(15,23,42,.16);padding:18px;z-index:60;transform:translateY(-8px) scale(.98);opacity:0;pointer-events:none;transition:.22s ease}
body.drawer-open .side-drawer{transform:none;opacity:1;pointer-events:auto}
.drawer-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.18);backdrop-filter:blur(2px);opacity:0;pointer-events:none;z-index:55;transition:.2s ease}
body.drawer-open .drawer-backdrop{opacity:1;pointer-events:auto}
.side-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.side-brand{display:flex;align-items:center;gap:12px}.side-brand-title{font-weight:800}.side-brand-sub{font-size:13px;color:var(--muted)}
.side-section-title{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#94a3b8;margin:10px 0 12px}
.side-nav{display:flex;flex-direction:column;gap:8px}
.side-link{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:18px;font-weight:700;color:var(--text);border:1px solid transparent}
.side-link:hover{background:var(--surface-2);border-color:var(--line)}
.side-link.active{background:var(--primary-soft);color:var(--primary);border-color:#bfdbfe}
.side-icon{width:22px;text-align:center;opacity:.9}
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center;padding:10px 0 16px}
.hero-card,.panel,.card,.stat-card,.question-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:34px;background:linear-gradient(180deg,var(--surface),#fbfdff)}
.panel,.card,.stat-card,.question-card{padding:24px}
.stack{display:flex;flex-direction:column;gap:18px}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.eyebrow{display:inline-flex;padding:8px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:700}
.hero h1,.page-title,.section-title{margin:0 0 14px;line-height:1.05;font-weight:800;letter-spacing:-.03em}
.hero h1{font-size:60px}.page-title{font-size:42px}.section-title{font-size:34px}.page-subtitle,.muted{color:var(--muted)}.page-subtitle{margin:-4px 0 18px;font-size:18px}
.actions,.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:8px}.field label{font-weight:700}.field input,.field select,.field textarea{width:100%;padding:14px 16px;border-radius:18px;border:1px solid var(--line);background:var(--surface);color:var(--text)}.field textarea{min-height:140px;resize:vertical}
.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:15px 12px;border-bottom:1px solid var(--line);text-align:start;vertical-align:top}.table th{font-size:12px;color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:.06em}
.tag{display:inline-flex;padding:7px 12px;border-radius:999px;background:#eef2ff;color:#4f46e5;font-size:12px;font-weight:700}.small{font-size:13px}.empty{padding:18px;color:var(--muted);text-align:center}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.stat-card{padding:24px}.stat-label{font-size:13px;color:var(--muted);margin-bottom:10px;font-weight:700}.stat-value{font-size:38px;font-weight:800;line-height:1}
.notice{padding:14px 16px;border-radius:18px;border:1px solid #bfdbfe;background:var(--primary-soft);color:var(--primary);font-weight:700}
.question-nav{position:sticky;top:96px;display:flex;gap:8px;flex-wrap:wrap;padding:14px;border:1px solid var(--line);background:var(--surface);border-radius:20px;margin-bottom:18px;box-shadow:var(--shadow)}
.question-nav a{width:38px;height:38px;border-radius:14px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;font-weight:700;background:#fff}
.question-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:12px}
.options-list{display:grid;gap:12px;margin-top:10px}
.option-tile{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:var(--surface-2);cursor:pointer;transition:.18s ease}
.option-tile:hover{border-color:#bfd6ff;background:#f5f9ff}
.option-tile input{margin-top:4px}
.result-answer{border:1px solid var(--line);border-radius:18px;padding:14px 16px;background:var(--surface-2);margin-top:10px}
.result-answer.correct{background:var(--success-soft);border-color:#a7dfb6;color:#166534}
.result-answer.wrong{background:var(--danger-soft);border-color:#fecaca;color:#991b1b}
.msg-list{display:flex;flex-direction:column;gap:12px;max-height:360px;overflow:auto}.msg{padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.msg .meta{font-size:12px;color:var(--muted);margin-bottom:6px}.inline-form{display:inline}
.site-footer{padding:28px 0 38px;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;align-items:center}.footer-brand{font-size:20px;font-weight:800;color:var(--text)}.footer-links{display:flex;gap:16px;flex-wrap:wrap}.footer-copy{text-align:end}

body.dark{
  --bg:#081120;--surface:#0f172a;--surface-2:#101b31;--text:#e5eefb;--muted:#9db0cf;--line:#22314a;--drawer:#0b1324;--shadow:0 20px 50px rgba(0,0,0,.28)
}
body.dark .topbar{background:rgba(8,17,32,.86)}
body.dark .top-link:hover,body.dark .top-link.active{background:#0f172a}
body.dark .menu-toggle,body.dark .lang-btn,body.dark .theme-btn,body.dark .secondary-btn,body.dark .ghost-btn,body.dark .side-close,body.dark .field input,body.dark .field select,body.dark .field textarea,body.dark .question-nav a{background:#0f172a;color:var(--text);border-color:var(--line)}
body.dark .option-tile{background:#0f172a}
body.dark .option-tile:hover{background:#12203a;border-color:#305b9d}
body.dark .result-answer.correct{background:rgba(22,163,74,.14);border-color:rgba(34,197,94,.32);color:#b7f7c6}
body.dark .result-answer.wrong{background:rgba(220,38,38,.14);border-color:rgba(248,113,113,.32);color:#fecaca}

@media (max-width:1100px){
  .desktop-nav{display:none}
  .hero,.grid.four,.grid.three,.grid.two,.stats-grid,.footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:46px}.page-title{font-size:36px}
}
@media (max-width:720px){
  .container{padding:0 14px}
  .topbar-inner{min-height:auto;padding:12px 0;flex-wrap:wrap}
  .topbar-actions{width:100%;justify-content:flex-start;flex-wrap:wrap}
  .brand{font-size:16px}.brand-mark{width:42px;height:42px}
  .page-shell{padding:22px 14px 42px}
  .hero h1{font-size:38px}
  .page-title{font-size:32px}
  .side-drawer{top:84px;right:12px;left:12px;width:auto;max-width:none}
  .footer-copy{text-align:start}
}

.auth-card{max-width:640px;margin:auto}
.auth-card .toolbar{justify-content:space-between;align-items:center}
.form-help{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:12px}
.form-note{font-size:13px;color:var(--muted)}
.inline-actions{display:flex;gap:10px;flex-wrap:wrap}
.hero-checks{display:grid;gap:12px;margin:20px 0 0;padding:0;list-style:none}
.hero-checks li{padding:12px 14px;border:1px solid var(--line);background:var(--surface-2);border-radius:18px;font-weight:600}
.content-page{max-width:900px;margin:auto}
.content-page .card{padding:32px}
.content-page h2{margin:24px 0 8px}
.list-clean{padding-inline-start:18px}
.list-clean li{margin-bottom:10px}
.print-shell{max-width:960px;margin:auto;background:#fff;color:#111;padding:24px}
.print-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:20px;padding-bottom:16px;border-bottom:2px solid var(--line)}
.print-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0}
.print-box{border:1px solid var(--line);border-radius:18px;padding:14px;background:#fff}
.print-question{border:1px solid var(--line);border-radius:18px;padding:18px;margin-bottom:16px;break-inside:avoid}
.print-options{margin:10px 0 0;padding-inline-start:20px}
.print-toolbar{display:flex;justify-content:flex-end;gap:12px;margin-bottom:18px}
.exam-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.kpi{padding:18px;border:1px solid var(--line);border-radius:20px;background:var(--surface-2)}
.kpi strong{display:block;font-size:28px}
.question-item,.question-builder .question-item{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:24px;margin-bottom:18px;box-shadow:var(--shadow)}
.field input[type='checkbox']{width:20px;height:20px}
.login-links{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:12px}
.page-links{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.note-card{background:linear-gradient(180deg,var(--surface),#fbfdff)}
@media (max-width: 900px){
  .hero,.exam-summary,.print-meta,.stats-grid,.grid.two,.grid.three,.grid.four{grid-template-columns:1fr}
  .desktop-nav{display:none}
}
@media print{
  .topbar,.site-footer,.drawer-backdrop,.side-drawer,.print-toolbar,.question-nav,.toolbar .secondary-btn,.toolbar .ghost-btn,.menu-toggle,.topbar-actions,.flash{display:none!important}
  body,html{background:#fff}
  .page-shell,.container{padding:0!important;max-width:none!important}
  .question-card,.card,.print-question{box-shadow:none!important;border-color:#ddd!important}
}

:root{
  --primary:#2563eb;
  --primary-soft:#eaf2ff;
  --accent:#7c3aed;
}
body{background:linear-gradient(180deg,#f3f7ff 0%, #eef4ff 32%, #f8fbff 100%)}
.topbar{backdrop-filter:blur(14px)}
.brand-mark{background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 10px 24px rgba(37,99,235,.22)}
.primary-btn{background:linear-gradient(135deg,var(--primary),#3b82f6);box-shadow:0 12px 24px rgba(37,99,235,.18)}
.hero-card,.card,.question-card,.stat-card,.panel{border-color:#dbe7ff}
.page-title{font-size:44px}
.field input,.field select,.field textarea{font-size:15px}
.countdown-chip,.exam-timer-card,.launch-countdown,.waiting-card{border-radius:22px}
.countdown-chip{display:inline-flex;align-items:center;padding:8px 12px;margin-top:8px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-weight:700}
.tag-neutral{background:#eef2f7;color:#334155}
.tag-warn{background:#fff7ed;color:#9a3412}
.tag-danger{background:#fee2e2;color:#b91c1c}
.exam-timer-card{min-width:220px;padding:16px 18px;background:linear-gradient(180deg,#ffffff,#edf4ff);border:1px solid #cfe0ff;box-shadow:0 18px 40px rgba(37,99,235,.12)}
.exam-timer{font-size:34px;font-weight:800;letter-spacing:.04em;color:#1d4ed8}
.waiting-card{max-width:760px;margin:auto;padding:34px;background:linear-gradient(180deg,#ffffff,#f8fbff)}
.launch-countdown{font-size:54px;font-weight:800;letter-spacing:.05em;text-align:center;padding:20px;background:linear-gradient(180deg,#eff6ff,#dbeafe);border:1px solid #bfdbfe;color:#1d4ed8}
body.dark .exam-timer-card{background:linear-gradient(180deg,#0f172a,#12233f);border-color:#23406d}
body.dark .launch-countdown{background:linear-gradient(180deg,#0f172a,#162b4f);border-color:#2a4779;color:#bfdbfe}
body.dark .countdown-chip{background:#2a1d12;border-color:#7c2d12;color:#fdba74}

.page-shell{display:block}
.hero-card{position:relative;overflow:hidden}
.hero-card:after{content:"";position:absolute;inset:auto -60px -60px auto;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle, rgba(37,99,235,.14), rgba(37,99,235,0));pointer-events:none}
.exam-timer-card{min-width:220px;padding:18px 20px;border-radius:22px;background:linear-gradient(135deg,#eff6ff,#ffffff);border:1px solid #bfdbfe;box-shadow:var(--shadow)}
.exam-timer,.launch-countdown{font-size:34px;font-weight:800;letter-spacing:.04em;line-height:1.1}
.countdown-chip{display:inline-flex;margin-top:8px;padding:8px 12px;border-radius:999px;background:#eff6ff;color:#1d4ed8;font-weight:700;font-size:13px}
.tag-neutral{background:#eef2f7;color:#334155}.tag-warn{background:#fff7ed;color:#c2410c}.tag-danger{background:#fee2e2;color:#b91c1c}
.waiting-card{max-width:760px;margin:24px auto;padding:34px;text-align:center}
.exam-banner{padding:14px 18px;border-radius:18px;border:1px solid #bbf7d0;background:#f0fdf4;color:#166534;font-weight:700}
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.feature-item{padding:22px;border:1px solid var(--line);border-radius:24px;background:var(--surface);box-shadow:var(--shadow)}
.feature-item h3{margin:0 0 8px}
body.dark .exam-timer-card{background:linear-gradient(135deg,#12203a,#0f172a);border-color:#305b9d}
body.dark .countdown-chip{background:#12203a;color:#bfdbfe}
body.dark .tag-neutral{background:#172233;color:#dbeafe}
body.dark .tag-warn{background:#3a2413;color:#fed7aa}
body.dark .tag-danger{background:#3b1317;color:#fecaca}
body.dark .exam-banner{background:#10261a;border-color:#1f7a46;color:#bbf7d0}
@media (max-width:1100px){.feature-grid{grid-template-columns:1fr}}

.google-signin-block{margin-top:6px;display:flex;flex-direction:column;gap:14px}
.divider{position:relative;text-align:center;color:var(--muted);font-size:13px;font-weight:700}
.divider:before{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:var(--line)}
.divider span{position:relative;display:inline-block;padding:0 12px;background:var(--surface)}
.google-login-form{display:none}
.security-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.security-card{padding:18px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(180deg,var(--surface),#fbfdff)}
.security-card h3{margin:0 0 8px;font-size:18px}
.compliance-list{display:grid;gap:12px;margin-top:10px}
.compliance-item{display:flex;gap:10px;align-items:flex-start;padding:14px 16px;border-radius:18px;border:1px solid var(--line);background:var(--surface-2)}
.exam-guard{position:sticky;top:96px;z-index:20;margin-bottom:18px;padding:14px 16px;border-radius:18px;border:1px solid #fed7aa;background:#fff7ed;color:#9a3412;font-weight:700;display:flex;justify-content:space-between;gap:16px;align-items:center;flex-wrap:wrap}
.guard-count{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #fdba74}
.cheat-badge{display:inline-flex;padding:7px 12px;border-radius:999px;background:#fff7ed;color:#9a3412;font-size:12px;font-weight:800}
.cheat-badge.good{background:#ecfdf5;color:#166534}
@media (max-width:1100px){.security-grid{grid-template-columns:1fr}}


.google-oauth-btn{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:14px 16px;border:1px solid rgba(15,23,42,.12);border-radius:14px;background:#fff;color:#111827;font-weight:700;text-decoration:none;box-shadow:0 8px 24px rgba(15,23,42,.06)}
.google-oauth-btn:hover{transform:translateY(-1px)}
.google-g{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:999px;background:#fff;border:1px solid rgba(15,23,42,.1);font-weight:800}
.google-signin-block{margin-top:16px}

.terms-check{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border:1px solid var(--line);border-radius:18px;background:var(--surface-2);font-size:14px;line-height:1.7}
.terms-check input{margin-top:3px;flex:0 0 auto}
.terms-check a{color:var(--primary);font-weight:700}