:root{--bg:#f6f7fb;--card:#fff;--text:#111827;--muted:#6b7280;--line:#e5e7eb;--primary:#4f46e5;--primary-dark:#4338ca;--soft:#eef2ff;--danger:#b91c1c;--shadow:0 18px 45px rgba(15,23,42,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}a{color:inherit;text-decoration:none}.brand{font-weight:800;font-size:18px;display:flex;gap:10px;align-items:center}.brand span{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:var(--primary);color:#fff}.brand.big{font-size:24px}.brand.big span{width:46px;height:46px}.btn{border:0;border-radius:12px;padding:10px 14px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;cursor:pointer;background:#fff;color:var(--text);border:1px solid var(--line)}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-dark)}.btn-light{background:#fff}.btn-danger{background:#fee2e2;color:var(--danger);border-color:#fecaca}.btn-sm{padding:7px 10px;border-radius:10px;font-size:13px}.btn-lg{padding:14px 18px;border-radius:14px}.full{width:100%}.landing-body{background:linear-gradient(135deg,#fff 0%,#eef2ff 50%,#f6f7fb 100%)}.landing-wrap{max-width:1180px;margin:auto;padding:28px}.landing-nav{display:flex;align-items:center;justify-content:space-between}.nav-actions,.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.hero{min-height:74vh;display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--primary);font-weight:800}.hero h1{font-size:54px;line-height:1.02;margin:14px 0}.hero-text{font-size:18px;color:var(--muted);max-width:700px}.hero-card{background:#fff;padding:30px;border-radius:30px;box-shadow:var(--shadow)}.hero-card li{margin:13px 0}.auth-body{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#eef2ff,#eff6ff)}.auth-shell{width:min(980px,94vw);display:grid;grid-template-columns:1fr 1fr;background:#fff;border-radius:28px;overflow:hidden;box-shadow:var(--shadow)}.auth-panel{padding:42px}.auth-intro{background:#1e1b4b;color:#fff}.auth-intro p{color:#d1d5db}.form-stack,.form-card{display:grid;gap:15px}.form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}label{display:grid;gap:7px;font-weight:700;font-size:14px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 12px;font:inherit;background:#fff}textarea{resize:vertical}.muted{color:var(--muted)}.switch-link{text-align:center;color:var(--muted)}.switch-link a{font-weight:800;color:var(--primary)}.check{display:flex;grid-template-columns:auto 1fr;align-items:center;gap:9px;font-weight:500}.check input{width:auto}.app-body{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background:#1e1b4b;color:#fff;padding:22px;position:sticky;top:0;height:100vh}.sidebar-brand{margin-bottom:26px}.side-menu{display:grid;gap:8px}.side-menu a{padding:12px 14px;border-radius:14px;color:#d1d5db}.side-menu a.active,.side-menu a:hover{background:rgba(255,255,255,.1);color:#fff}.side-menu .disabled{opacity:.45}.main-area{min-width:0}.topbar{height:86px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;gap:16px}.topbar h2{margin:0}.topbar p{margin:4px 0 0;color:var(--muted)}.user-area{display:flex;align-items:center;gap:12px}.content{padding:28px}.alert{padding:13px 16px;border-radius:14px;margin-bottom:18px;font-weight:700}.alert.success{background:#ecfdf5;color:#047857}.alert.error{background:#fef2f2;color:#b91c1c}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.stat-card,.card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 10px 25px rgba(15,23,42,.04)}.stat-card span{color:var(--muted);font-weight:700}.stat-card strong{font-size:34px;display:block;margin:8px 0}.stat-card p{color:var(--muted);margin:0}.stat-card.accent{background:var(--primary);color:#fff}.stat-card.accent span,.stat-card.accent p{color:#fff}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.mt-24{margin-top:24px}.card-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}.card-head h3{margin:0}.list-soft{display:grid;gap:10px}.list-soft a{display:grid;gap:5px;padding:13px;border-radius:14px;background:#f9fafb}.list-soft span{color:var(--muted);font-size:13px}.empty{color:var(--muted);text-align:center;padding:20px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}.table th{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.actions{display:flex;gap:8px;justify-content:flex-end;align-items:center;flex-wrap:wrap}.actions form{display:inline}.pill{display:inline-flex;padding:5px 10px;border-radius:999px;background:#f3f4f6;color:#374151;font-size:12px;font-weight:800}.modal{border:0;border-radius:22px;padding:0;box-shadow:var(--shadow);width:min(560px,92vw)}.modal::backdrop{background:rgba(15,23,42,.45)}.modal-box{padding:24px}.modal-actions,.form-actions{display:flex;justify-content:flex-end;gap:10px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.filter-bar{display:grid;grid-template-columns:2fr 1fr 1fr auto;gap:10px;margin-bottom:16px}.question-list{display:grid;gap:12px}.question-item{border:1px solid var(--line);border-radius:18px;padding:15px;display:flex;justify-content:space-between;gap:16px;background:#fff}.question-list.compact .question-item{align-items:center}.question-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}.question-meta span{background:#f3f4f6;border-radius:999px;padding:4px 9px;font-size:12px;color:#4b5563;font-weight:700}.question-item h4{margin:0}.options-box{background:#f9fafb;border:1px dashed var(--line);border-radius:18px;padding:16px;display:grid;gap:12px}.readable{max-width:900px}.content-block{background:#f9fafb;border-radius:16px;padding:16px;line-height:1.7}.option-list li{padding:8px 10px;border-radius:12px;margin:6px 0}.option-list li.correct{background:#ecfdf5;color:#047857;font-weight:800}.exam-layout{display:grid;grid-template-columns:1fr 380px;gap:20px}.mini-list{display:grid;gap:10px;max-height:560px;overflow:auto}.mini-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:14px}.inline-form{display:flex;gap:12px;align-items:end;flex-wrap:wrap}.inline-form label{min-width:150px}.version-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.version-card{border:1px solid var(--line);border-radius:18px;padding:16px;background:#f9fafb}.answer-key{display:flex;gap:7px;flex-wrap:wrap;margin-top:9px}.answer-key span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 8px;font-size:12px;font-weight:700}@media(max-width:1000px){.app-body{grid-template-columns:1fr}.sidebar{position:static;height:auto}.side-menu{grid-template-columns:repeat(3,1fr)}.stats-grid,.grid-2,.hero,.auth-shell,.exam-layout{grid-template-columns:1fr}.version-grid{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:38px}.topbar{height:auto;padding:18px;align-items:flex-start;flex-direction:column}.content{padding:18px}}@media(max-width:640px){.stats-grid,.form-grid,.filter-bar,.version-grid{grid-template-columns:1fr}.question-item{display:grid}.user-area{width:100%;justify-content:space-between}.side-menu{grid-template-columns:1fr 1fr}.auth-panel{padding:26px}.actions{justify-content:flex-start}}

/* QLDT-inspired admin polish */
body{background:#f9fafb}.content-area .card,.content-area .stat-card,.content-area .form-card{border-color:#eef2f7;border-radius:18px;box-shadow:0 10px 25px rgba(15,23,42,.04)}
.btn{border-radius:12px;font-size:14px}.btn-primary{background:#4f46e5;border-color:#4f46e5}.btn-primary:hover{background:#4338ca}.btn-danger{background:#fee2e2;color:#b91c1c;border-color:#fecaca}.btn-light{background:#fff;color:#374151;border-color:#e5e7eb}.pill{background:#eef2ff;color:#4338ca}.stat-card.accent{background:#4f46e5}.table th{background:#f9fafb}.table th:first-child{border-top-left-radius:12px}.table th:last-child{border-top-right-radius:12px}.question-meta span{background:#eef2ff;color:#4338ca}.option-list li.correct{background:#ecfdf5;color:#047857}.form-stack label,.form-card label{color:#374151}input:focus,select:focus,textarea:focus{outline:none;border-color:#818cf8;box-shadow:0 0 0 3px rgba(99,102,241,.12)}.switch-link{margin-top:18px}.switch-link a{color:#4f46e5}.alert.error{background:#fef2f2;color:#b91c1c}.alert.success{background:#ecfdf5;color:#047857}
@media(max-width:1000px){.content{padding:0}.side-menu{grid-template-columns:1fr}.sidebar{display:none}}

/* Form UI fix - make fields clear like QLDT sample */
.form-card,.modal-box,.auth-panel .form-stack{gap:18px}.form-card{max-width:980px;padding:28px 24px;border-radius:18px}.form-card.form-wide{max-width:1120px}.form-title{margin:0 0 4px;font-size:17px;font-weight:800;color:#111827}.form-note{margin:-2px 0 6px;color:#6b7280;font-size:13px}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 16px}.form-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 16px}.form-grid .full-row,.form-grid-3 .full-row,.full-row{grid-column:1/-1}label{gap:9px;font-size:14px;line-height:1.35;color:#111827}.form-card label,.modal-box label,.auth-panel label{font-weight:700}input,select,textarea{min-height:44px;padding:12px 16px;border-radius:14px;border-color:#dfe5ee;color:#111827;line-height:1.45;background-color:#fff}textarea{min-height:96px;padding-top:13px}input::placeholder,textarea::placeholder{color:#9ca3af}select{padding-right:38px}.options-box{border-radius:18px;padding:18px;gap:15px;background:#fbfcff}.options-box h4{margin:0 0 2px;font-size:16px}.form-actions,.modal-actions{justify-content:flex-start;padding-top:6px}.form-actions .btn,.modal-actions .btn{min-width:108px}.check{display:flex!important;gap:10px!important;align-items:center}.check input{min-height:auto}.modal{width:min(640px,94vw)}.modal-box{padding:28px 24px}.modal-box h3{margin:0 0 4px;font-size:20px}@media(max-width:760px){.form-grid,.form-grid-3{grid-template-columns:1fr}.form-card{padding:22px 18px}input,select,textarea{min-height:46px}}