:root{--navy:#0a2540;--navy-dark:#061a30;--navy-light:#123b6b;--gold:#d4af37;--gold-light:#f2c94c;--gold-dark:#a8862a;--white:#fff;--off-white:#f4f6fa;--text-muted:#6b7a93;--danger:#d64545;--success:#2e9e5b;--border:#e3e8f0}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--off-white);color:var(--navy-dark);-webkit-font-smoothing:antialiased;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}a{color:inherit}.auth-page{background:linear-gradient(160deg, var(--navy-dark), var(--navy-light));justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex;overflow-y:auto}.onboarding-card{max-width:460px;margin:auto 0}.onboard-progress{gap:8px;margin:0 0 20px;display:flex}.onboard-dot{background:var(--border);border-radius:3px;flex:1;height:6px;transition:background .2s}.onboard-dot-active{background:var(--gold)}.onboard-form{flex-direction:column;gap:4px;display:flex}.onboard-nav{justify-content:space-between;align-items:center;gap:12px;margin-top:8px;display:flex}.onboard-nav .btn{min-width:110px}.auth-card{background:var(--white);border-radius:18px;width:100%;max-width:400px;padding:32px 28px;box-shadow:0 16px 40px #00000059}.auth-logo{align-items:center;gap:12px;margin-bottom:20px;display:flex}.auth-logo-img{object-fit:cover;background:var(--gold);border-radius:12px;width:48px;height:48px}.auth-logo-center{justify-content:center}.auth-logo-center .auth-logo-img{border-radius:18px;width:72px;height:72px}.auth-title{color:var(--navy-dark);text-align:center;font-size:20px;font-weight:800}.auth-subtitle{color:var(--text-muted);text-align:center;margin-top:4px;margin-bottom:24px;font-size:14px}.auth-alt{color:var(--text-muted);text-align:center;margin-top:18px;font-size:13px}.auth-alt a{color:var(--navy-light);font-weight:700}.field{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}.field span{color:var(--navy-dark);font-size:13px;font-weight:700}.field input,.field textarea,.option-input{border:1.5px solid var(--border);width:100%;color:var(--navy-dark);background:var(--off-white);border-radius:10px;padding:11px 13px;font-family:inherit;font-size:14px}.field input:focus,.field textarea:focus,.option-input:focus{border-color:var(--gold);background:var(--white);outline:none}.field input[type=file]{padding:8px}.field input[type=radio]{width:auto}.level-select{border:1.5px solid var(--border);width:100%;color:var(--navy-dark);background:var(--off-white);appearance:auto;border-radius:10px;padding:11px 13px;font-family:inherit;font-size:14px}.level-select:focus{border-color:var(--gold);background:var(--white);outline:none}.phone-row{gap:8px;display:flex}.country-select{border:1.5px solid var(--border);color:var(--navy-dark);background:var(--off-white);border-radius:10px;flex:0 0 118px;padding:11px 10px;font-family:inherit;font-size:14px;font-weight:700}.country-select:focus{border-color:var(--gold);background:var(--white);outline:none}.phone-input{border:1.5px solid var(--border);min-width:0;color:var(--navy-dark);background:var(--off-white);border-radius:10px;flex:1;padding:11px 13px;font-family:inherit;font-size:14px}.phone-input:focus{border-color:var(--gold);background:var(--white);outline:none}@media (width<=480px){.phone-row{flex-direction:column}.country-select{flex:none;width:100%}}.error{color:var(--danger);margin-bottom:14px;font-size:13px}.muted{color:var(--text-muted)}.small{font-size:12px}.btn{cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:6px;padding:11px 18px;font-family:inherit;font-size:14px;font-weight:700;text-decoration:none;transition:opacity .15s,transform 50ms;display:inline-flex}.btn:disabled{opacity:.6;cursor:not-allowed}.btn:active{transform:scale(.98)}.btn-primary{background:var(--gold);color:var(--navy-dark)}.btn-primary:hover{opacity:.9}.btn-secondary{background:var(--navy);color:var(--white)}.btn-secondary:hover{opacity:.9}.btn-ghost{color:var(--navy);border:1.5px solid var(--border);background:0 0}.btn-danger{color:var(--white);background:#d64545}.btn-danger:hover{background:#b53333}.btn-small{border-radius:8px;padding:7px 12px;font-size:12px}.btn-block{width:100%}.layout{min-height:100vh;display:flex}.topbar,.backdrop{display:none}.sidebar{background:var(--navy-dark);flex-direction:column;width:250px;height:100vh;padding:24px 16px;display:flex;position:sticky;top:0}.sidebar-brand{color:var(--gold-light);align-items:center;gap:10px;padding:0 8px 24px;font-size:22px;font-weight:900;display:flex}.menu-toggle{color:var(--white);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:22px;display:none}.brand-logo{object-fit:cover;background:var(--gold);border-radius:9px;width:34px;height:34px}.sidebar-nav{flex-direction:column;flex:1;gap:4px;display:flex}.nav-link{color:#cbd7e8;border-radius:10px;padding:11px 14px;font-size:14px;font-weight:600;text-decoration:none}.nav-link:hover{background:#ffffff0f}.nav-link-active{background:var(--gold);color:var(--navy-dark);font-weight:800}.sidebar-user{border-top:1px solid #ffffff1f;flex-direction:column;gap:10px;padding-top:16px;display:flex}.sidebar-avatar{background:var(--gold);width:40px;height:40px;color:var(--navy-dark);border-radius:20px;justify-content:center;align-items:center;font-size:18px;font-weight:900;display:flex}.sidebar-user-info{flex-direction:column;display:flex}.sidebar-name{color:var(--white);font-size:14px;font-weight:700}.sidebar-email{color:var(--text-muted);font-size:12px}.main{flex:1;padding:28px 32px;overflow-x:hidden}.page{max-width:860px;margin:0 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h2{margin-bottom:14px;font-size:18px;font-weight:800}.quick-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;display:grid}.quick-card{background:var(--white);border:1px solid var(--border);border-radius:14px;flex-direction:column;gap:6px;padding:18px;text-decoration:none;transition:border-color .15s;display:flex}.quick-card:hover{border-color:var(--gold)}.quick-card strong{color:var(--navy-dark);font-size:15px}.quick-card span{color:var(--text-muted);font-size:13px;line-height:18px}.list{flex-direction:column;gap:12px;display:flex}.list-item{background:var(--white);border:1px solid var(--border);border-radius:14px;align-items:center;gap:16px;padding:16px 18px;display:flex}.list-item-body{flex:1;min-width:0}.list-item-body strong{color:var(--navy-dark);font-size:15px;display:block}.item-title-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.level-badge{background:var(--navy);color:var(--gold-light);text-transform:uppercase;letter-spacing:.4px;border-radius:6px;padding:3px 9px;font-size:11px;font-weight:700}.playlist-badge{background:var(--off-white);color:var(--navy);border:1px solid var(--border);border-radius:6px;padding:3px 9px;font-size:11px;font-weight:700}.source-badge{text-transform:uppercase;letter-spacing:.4px;border-radius:6px;padding:3px 9px;font-size:11px;font-weight:800}.source-badge-ai{background:var(--navy);color:var(--gold-light)}.source-badge-manual{background:var(--off-white);color:var(--text-muted);border:1px solid var(--border)}.premium-badge{background:linear-gradient(90deg, var(--gold-light), var(--gold-dark));color:#fff;text-transform:uppercase;letter-spacing:.4px;border-radius:6px;padding:3px 9px;font-size:11px;font-weight:800}.premium-box{border:1px solid var(--gold);background:#fff7e0;border-radius:12px;margin-bottom:16px;padding:16px}.attached-note{color:var(--navy);margin-top:6px;font-weight:600;display:block}.note-edit-row{flex-wrap:wrap;align-items:center;gap:10px;margin-top:10px;display:flex}.note-edit-row .level-select{flex:1;min-width:180px}.segmented-sm .segment{padding:8px 12px;font-size:12px}.new-note-fields{flex-direction:column;gap:10px;width:100%;display:flex}.new-note-fields input[type=text],.new-note-fields input[type=file]{border:1.5px solid var(--border);width:100%;color:var(--navy-dark);background:var(--white);border-radius:8px;padding:10px 12px;font-family:inherit;font-size:13px}.premium-price{margin:12px 0 0}.wallet-balance{background:linear-gradient(160deg, var(--navy-dark), var(--navy-light))}.withdraw-form{flex-wrap:wrap;gap:12px;display:flex}.withdraw-form input{border:1.5px solid var(--border);min-width:200px;color:var(--navy-dark);border-radius:10px;flex:1;padding:11px 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0;display:flex}.option-row{align-items:center;gap:12px;display:flex}.option-answer{color:var(--text-muted);flex-shrink:0;align-items:center;gap:6px;width:82px;font-size:12px;font-weight:700;display:flex}.option-input{flex:1}.question-block-actions{gap:10px;display:flex}.success-card{text-align:center;padding:40px}.success-card p{color:var(--text-muted);margin-bottom:20px}.big-code{letter-spacing:4px;color:var(--navy);background:var(--off-white);border:2px dashed var(--gold);border-radius:14px;max-width:320px;margin:0 auto 20px;padding:18px;font-family:ui-monospace,monospace;font-size:34px;font-weight:900}.success-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:16px;display:flex}.file-hint{color:var(--text-muted);margin-bottom:14px;font-size:13px}.back-btn{margin-bottom:10px}.exam-meta{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;display:flex}.meta-chip{background:var(--off-white);border:1px solid var(--border);color:var(--navy-dark);border-radius:6px;padding:4px 10px;font-size:12px;font-weight:700}.exam-description{margin-bottom:18px}.question-card{margin-bottom:14px}.question-card-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;display:flex}.question-card-top strong{color:var(--navy-dark)}.type-badge{background:var(--gold);color:var(--navy-dark);text-transform:uppercase;letter-spacing:.4px;border-radius:6px;padding:3px 9px;font-size:11px;font-weight:800}.question-card-text{color:var(--navy-dark);margin-bottom:14px;font-size:15px;font-weight:600;line-height:22px}.preview-options{flex-direction:column;gap:8px;display:flex}.preview-option{background:var(--off-white);border:1.5px solid var(--border);color:var(--navy-dark);border-radius:10px;align-items:center;gap:10px;padding:10px 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p{color:var(--navy-dark);font-size:14px;line-height:20px}.header-actions{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.submission-score{flex-direction:column;align-items:flex-end;gap:2px;display:flex}.score-value{background:var(--navy);color:var(--gold-light);border-radius:8px;padding:6px 12px;font-size:14px;font-weight:800}.source-badge-graded{background:var(--success);color:var(--white)}.source-badge-failed{background:var(--danger);color:var(--white)}.source-badge-pending{background:var(--gold);color:var(--navy-dark)}.grade-answer{background:var(--off-white);border:1px solid var(--border);border-radius:10px;margin-bottom:12px;padding:12px 14px}.grade-answer-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.4px;margin-bottom:6px;font-size:11px;font-weight:800;display:block}.grade-answer p{color:var(--navy-dark);font-size:14px;line-height:20px}.verdict-inline{letter-spacing:.4px;border-radius:6px;margin-bottom:4px;padding:5px 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var(--border);border-radius:3px;height:6px;overflow:hidden}.pw-meter-fill{border-radius:3px;height:100%;transition:width .2s,background .2s}.pw-weak{background:var(--danger)}.pw-fair{background:var(--gold)}.pw-strong{background:var(--success)}.pw-strength{text-transform:uppercase;letter-spacing:.4px;text-align:right;font-size:11px;font-weight:800}.pw-strength.pw-weak{color:var(--danger)}.pw-strength.pw-fair{color:var(--gold-dark)}.pw-strength.pw-strong{color:var(--success)}.pw-confirm{color:var(--danger);align-items:center;gap:6px;font-size:12px;font-weight:700;display:inline-flex}.pw-confirm.pw-ok{color:var(--success)}@media (width<=480px){.pw-checks{grid-template-columns:1fr}}.profile-avatar-img,.sidebar-avatar-img{object-fit:cover}.avatar-upload{position:relative}.avatar-upload-btn{text-align:center;color:var(--navy);cursor:pointer;border:1.5px solid var(--border);background:var(--off-white);border-radius:8px;margin-top:8px;padding:6px 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