:root{
  --navy:#0b3b79;--navy2:#072d63;--gold:#f4b942;--gold2:#ffd873;--bg:#f5f8fc;--card:#fff;--ink:#16243a;--muted:#6d7890;--line:#dfe7f1;--green:#1b8d5a;--red:#c64040;--orange:#d97706;--shadow:0 12px 32px rgba(20,51,90,.09);--radius:18px
}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}.hidden{display:none!important}.muted{color:var(--muted)}
.auth-screen{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 10% 0%,rgba(244,185,66,.23),transparent 34%),linear-gradient(135deg,#062b60,#0b3b79 55%,#154f97)}
.auth-panel{width:min(860px,96vw);background:rgba(255,255,255,.98);border:1px solid rgba(255,255,255,.35);border-radius:28px;padding:34px;box-shadow:0 30px 70px rgba(0,0,0,.22)}.auth-brand{display:flex;gap:16px;align-items:center}.auth-brand img{width:120px;height:66px;object-fit:cover;border-radius:14px}.auth-brand h1{margin:0;font-size:28px}.auth-brand p{margin:4px 0 0;color:var(--muted)}.auth-panel>h2{margin:30px 0 8px;font-size:26px}.role-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}.role-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:20px;text-align:left;transition:.2s;display:grid;gap:6px}.role-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#b9cae2}.role-card span{font-size:30px}.role-card strong{font-size:16px}.role-card small{color:var(--muted)}.auth-note{margin-top:20px;padding:12px 14px;border-radius:12px;background:#f0f5fb;color:#536078;font-size:12px}
.app-shell{min-height:100vh;display:grid;grid-template-columns:254px 1fr}.sidebar{position:sticky;top:0;height:100vh;background:linear-gradient(180deg,#072d63,#0b3b79 70%,#062553);color:#fff;padding:20px 14px;display:flex;flex-direction:column;z-index:40}.brand-row{display:flex;align-items:center;gap:10px;padding:4px 6px 20px;border-bottom:1px solid rgba(255,255,255,.12)}.brand-row img{width:70px;height:42px;object-fit:cover;border-radius:9px}.brand-row strong{display:block}.brand-row small{display:block;color:#dbe8ff;margin-top:2px}.side-nav{display:grid;gap:6px;margin-top:18px}.nav-btn{width:100%;border:0;background:transparent;color:#dbe8ff;border-radius:11px;padding:11px 12px;display:flex;gap:10px;align-items:center;text-align:left}.nav-btn:hover,.nav-btn.active{background:rgba(255,255,255,.12);color:#fff}.nav-btn.active{box-shadow:inset 3px 0 var(--gold)}.sidebar-footer{margin-top:auto;display:grid;gap:8px}.btn{border:0;border-radius:11px;padding:10px 14px;font-weight:750}.btn.primary{background:var(--navy);color:#fff}.btn.gold{background:var(--gold);color:#102445}.btn.secondary{background:#eaf1fb;color:var(--navy)}.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}.sidebar .btn.ghost{border-color:rgba(255,255,255,.2);color:#fff}.btn.danger{color:#ffdada}.btn.small{padding:7px 10px;font-size:12px}.btn:disabled{opacity:.55;cursor:not-allowed}.main-area{min-width:0}.topbar{height:72px;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:25}.top-title strong{display:block;font-size:16px}.top-title small{display:block;color:var(--muted);margin-top:2px}.top-actions{display:flex;gap:10px;align-items:center}.icon-btn,.avatar{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;position:relative}.avatar{background:var(--navy);color:#fff;font-weight:800;border:0}.badge-dot{position:absolute;width:8px;height:8px;border-radius:50%;background:#e34d59;right:8px;top:7px;border:2px solid #fff}.view{padding:24px;max-width:1500px;margin:0 auto}.scrim{display:none}
.hero{background:linear-gradient(135deg,#0b3b79,#174f95);color:#fff;border-radius:24px;padding:26px;display:flex;justify-content:space-between;gap:24px;align-items:center;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero:after{content:"";position:absolute;right:-90px;top:-110px;width:300px;height:300px;border-radius:50%;background:rgba(244,185,66,.18)}.hero h1{margin:0 0 8px;font-size:28px}.hero p{margin:0;color:#deebff;max-width:700px}.hero-actions{display:flex;gap:10px;position:relative;z-index:2;flex-wrap:wrap}.section{margin-top:24px}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:12px}.section-head h2{margin:0;font-size:19px}.section-head p{margin:4px 0 0;color:var(--muted);font-size:13px}.grid{display:grid;gap:14px}.grid.cols-4{grid-template-columns:repeat(4,1fr)}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 7px 20px rgba(17,44,75,.045)}.kpi{display:flex;justify-content:space-between;gap:14px;align-items:center}.kpi .num{font-size:27px;font-weight:850;margin-top:4px}.kpi small{color:var(--muted)}.kpi .icon{font-size:26px;width:48px;height:48px;border-radius:14px;background:#f0f5fb;display:grid;place-items:center}.course-card{padding:0;overflow:hidden}.course-cover{height:120px;background:linear-gradient(135deg,#102d57,#0b3b79);color:#fff;padding:18px;position:relative}.course-cover:after{content:"";position:absolute;right:-20px;bottom:-50px;width:130px;height:130px;border-radius:50%;background:rgba(244,185,66,.28)}.course-cover .tag{display:inline-flex;background:rgba(255,255,255,.14);padding:5px 8px;border-radius:999px;font-size:11px}.course-body{padding:16px}.course-body h3{margin:0 0 5px;font-size:16px}.course-meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:12px}.price{font-size:20px;font-weight:850;color:var(--navy)}.price del{font-size:12px;color:#9aa3b4;font-weight:500;margin-left:5px}.course-actions{display:flex;gap:8px;margin-top:14px}.progress{height:8px;border-radius:999px;background:#e8eef6;overflow:hidden;margin-top:12px}.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--gold),#ffcf67);border-radius:999px}.status{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:5px 8px;font-size:11px;font-weight:800}.status.free{background:#e8f8ef;color:#18784e}.status.paid{background:#fff1da;color:#9f6200}.status.active{background:#e9f2ff;color:#165d9a}.status.pending{background:#fff5d9;color:#8a6500}.status.locked{background:#f0f2f5;color:#6e7684}.status.danger{background:#ffe9ea;color:#a52f38}
.tabs{display:flex;gap:8px;overflow:auto;padding-bottom:4px}.tab-btn{white-space:nowrap;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 12px;font-weight:750;color:#59657a}.tab-btn.active{background:var(--navy);color:#fff;border-color:var(--navy)}.folder{border:1px solid var(--line);border-radius:15px;overflow:hidden;background:#fff;margin-top:12px}.folder-head{padding:13px 14px;background:#f9fbfe;display:flex;justify-content:space-between;gap:10px;align-items:center;border-bottom:1px solid var(--line)}.file-row,.mock-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:13px 14px;border-bottom:1px solid #edf1f6}.file-row:last-child,.mock-row:last-child{border-bottom:0}.file-title{font-weight:750}.file-sub{color:var(--muted);font-size:12px;margin-top:3px}.row-actions{display:flex;gap:7px;align-items:center;flex-wrap:wrap}.lock{opacity:.6}.social-card{min-height:130px;display:flex;flex-direction:column;justify-content:space-between;color:#fff;border:0}.social-card.facebook{background:linear-gradient(135deg,#1f6bd7,#0d4fa8)}.social-card.instagram{background:linear-gradient(135deg,#7046c9,#d84b82,#f19b43)}.social-card h3{margin:0}.social-card a{color:#fff;font-weight:800;text-decoration:none}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:15px;background:#fff}.table{width:100%;border-collapse:collapse;min-width:780px}.table th,.table td{padding:11px 12px;border-bottom:1px solid #edf1f6;text-align:left;font-size:12px;vertical-align:middle}.table th{background:#f8fafc;color:#536078;font-size:11px;text-transform:uppercase;letter-spacing:.04em}.table tr:last-child td{border-bottom:0}.filters{display:flex;gap:8px;flex-wrap:wrap}.input,.select,.textarea{width:100%;border:1px solid var(--line);border-radius:11px;background:#fff;padding:10px 11px;color:var(--ink);outline:none}.input:focus,.select:focus,.textarea:focus{border-color:#83a8d6;box-shadow:0 0 0 3px rgba(11,59,121,.08)}.textarea{min-height:90px;resize:vertical}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.field label{display:block;font-size:12px;font-weight:800;margin-bottom:6px;color:#45536a}.field.full{grid-column:1/-1}.check-row{display:flex;align-items:center;gap:8px;font-size:13px}.empty{padding:34px;text-align:center;color:var(--muted)}.note{padding:12px 14px;border-radius:12px;background:#fff6dc;border:1px solid #f0d99b;color:#6f570b;font-size:12px}.success-note{background:#eaf8f0;border-color:#bee7ce;color:#1f6946}
.modal-backdrop{position:fixed;inset:0;background:rgba(4,20,42,.52);display:grid;place-items:center;padding:18px;z-index:100}.modal{width:min(760px,96vw);max-height:92vh;overflow:auto;background:#fff;border-radius:22px;box-shadow:0 30px 80px rgba(0,0,0,.25)}.modal-head{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;align-items:center;position:sticky;top:0;background:#fff;z-index:2}.modal-head h3{margin:0}.modal-body{padding:20px}.modal-foot{padding:15px 20px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px;position:sticky;bottom:0;background:#fff}.close-btn{width:36px;height:36px;border:0;border-radius:10px;background:#f1f4f8}.payment-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.payment-option{border:1px solid var(--line);border-radius:14px;padding:16px}.payment-option h4{margin:0 0 6px}.mock-shell{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:14px}.question-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.mock-top{display:flex;justify-content:space-between;gap:12px;align-items:center;padding-bottom:14px;border-bottom:1px solid var(--line)}.timer{font-size:17px;font-weight:850;color:var(--red)}.lang-switch{display:flex;gap:5px}.lang-switch button{border:1px solid var(--line);background:#fff;padding:6px 9px;border-radius:8px;font-size:11px;font-weight:750}.lang-switch button.active{background:var(--navy);color:#fff}.question-text{font-size:17px;font-weight:750;line-height:1.55;margin:22px 0}.question-text .en{display:block;color:#58657b;margin-top:8px;font-size:15px}.options{display:grid;gap:10px}.option{border:1px solid var(--line);border-radius:13px;padding:12px 13px;display:flex;gap:10px;align-items:flex-start;background:#fff}.option.selected{border-color:#6d95c6;background:#f2f7fd}.option strong{width:24px}.palette{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;height:max-content;position:sticky;top:88px}.palette-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;margin-top:12px}.qdot{aspect-ratio:1;border:1px solid var(--line);background:#f8fafc;border-radius:8px;font-size:11px}.qdot.answered{background:#dff5e9;border-color:#9fd8b7}.qdot.current{outline:2px solid var(--navy)}.mock-nav{display:flex;justify-content:space-between;gap:10px;margin-top:18px}.result-score{font-size:44px;font-weight:900;color:var(--navy)}.bar{height:10px;background:#edf1f6;border-radius:999px;overflow:hidden}.bar i{display:block;height:100%;background:var(--navy)}
.chat-layout{display:grid;grid-template-columns:280px 1fr;gap:14px;min-height:600px}.chat-list,.chat-panel{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.chat-list-head,.chat-panel-head{padding:14px;border-bottom:1px solid var(--line);font-weight:800}.chat-room{padding:12px 14px;border-bottom:1px solid #edf1f6;cursor:pointer}.chat-room.active,.chat-room:hover{background:#f4f8fd}.chat-room small{color:var(--muted);display:block;margin-top:3px}.messages{height:480px;overflow:auto;padding:16px;background:#f9fbfe;display:flex;flex-direction:column;gap:10px}.message{max-width:74%;padding:10px 12px;border-radius:14px;background:#fff;border:1px solid var(--line);font-size:13px}.message.me{align-self:flex-end;background:#e9f2ff;border-color:#c8dcf5}.message small{display:block;color:var(--muted);margin-top:5px}.chat-compose{display:grid;grid-template-columns:1fr auto;gap:8px;padding:12px;border-top:1px solid var(--line)}
.upload-zone{border:2px dashed #b9c9dd;border-radius:16px;padding:24px;text-align:center;background:#f9fbfe}.upload-zone input{margin-top:10px}.error-list{max-height:180px;overflow:auto;background:#fff4f4;border:1px solid #f2cccc;border-radius:12px;padding:10px;font-size:12px}.pill-row{display:flex;gap:6px;flex-wrap:wrap}.pill{padding:5px 8px;border-radius:999px;background:#eef4fb;font-size:11px;color:#4f6179}
.toast{position:fixed;right:18px;bottom:18px;z-index:200;background:#10243f;color:#fff;padding:12px 15px;border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.22);opacity:0;transform:translateY(12px);pointer-events:none;transition:.2s;max-width:360px;font-size:13px}.toast.show{opacity:1;transform:none}.mobile-only{display:none}
@media(max-width:1100px){.grid.cols-4{grid-template-columns:repeat(2,1fr)}.grid.cols-3{grid-template-columns:repeat(2,1fr)}.mock-shell{grid-template-columns:1fr}.palette{position:static}.chat-layout{grid-template-columns:220px 1fr}}
@media(max-width:840px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;left:-270px;width:254px;transition:.22s}.sidebar.open{left:0}.scrim.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.38);z-index:35}.mobile-only{display:inline-grid;place-items:center}.topbar{padding:0 14px}.view{padding:16px}.chat-layout{grid-template-columns:1fr}.chat-list{max-height:250px}.auth-panel{padding:24px}.role-grid{grid-template-columns:1fr}.hero{align-items:flex-start;flex-direction:column}}
@media(max-width:620px){.grid.cols-4,.grid.cols-3,.grid.cols-2,.form-grid,.payment-options{grid-template-columns:1fr}.hero{padding:20px}.hero h1{font-size:23px}.view{padding:12px}.section-head{align-items:flex-start;flex-direction:column}.file-row,.mock-row{grid-template-columns:1fr}.row-actions{justify-content:flex-start}.auth-brand img{width:92px;height:54px}.auth-brand h1{font-size:23px}.modal-backdrop{padding:8px}.modal{border-radius:16px}.mock-top{align-items:flex-start;flex-direction:column}.message{max-width:88%}}

.auth-form{display:grid;gap:10px;margin:16px 0}.auth-form .btn{width:100%}.pdf-frame{width:100%;height:68vh;border:0;border-radius:14px;background:#fff}.backend-chip{font-size:11px;padding:4px 8px;border-radius:999px;background:#e8f5e9;color:#176b2c;font-weight:800}