:root{color-scheme:dark;--canvas: #181818;--canvas-elevated: #303030;--rosso: #da291c;--ink: #ffffff;--body: #969696;--light: #ffffff;--light-ink: #181818;--hairline: #d2d2d2;--spacing-xs: 8px;--spacing-sm: 16px;--spacing-md: 24px;--spacing-lg: 32px;--spacing-xl: 64px;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--canvas);color:var(--ink)}button,input,textarea,select{font:inherit}.portal-shell{min-height:100vh}.portal-nav{position:sticky;top:0;z-index:10;display:flex;gap:8px;justify-content:flex-end;padding:14px 24px;border-bottom:1px solid rgba(255,255,255,.12);background:#181818e6;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.portal-nav button{min-height:40px;border:1px solid rgba(255,255,255,.14);background:transparent;color:var(--ink);padding:0 16px;cursor:pointer}.portal-nav button.active,.portal-nav button:hover{border-color:var(--rosso);background:var(--rosso)}.portal-home{min-height:calc(100vh - 69px);display:grid;place-items:center;padding:var(--spacing-xl);background:radial-gradient(circle at 18% 20%,rgba(218,41,28,.35),transparent 28%),linear-gradient(135deg,#303030cc,#181818)}.portal-hero-card{width:min(760px,100%);border:1px solid rgba(255,255,255,.16);background:#181818e0;padding:clamp(32px,6vw,72px)}.portal-hero-card h1{margin:0;max-width:13ch;font-size:clamp(2.4rem,6vw,5rem);font-weight:500;line-height:1.05;letter-spacing:0}.portal-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}.admin-shell{min-height:100vh}.admin-hero{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:32px;padding:64px;background:linear-gradient(180deg,#181818b3,#181818eb),url(https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&w=1400&q=80) center/cover}.admin-hero h1{margin:0;max-width:12ch;font-size:clamp(2.5rem,6vw,5rem);font-weight:500;line-height:1.05;letter-spacing:0}.hero-stat{display:flex;flex-direction:column;justify-content:flex-end;align-items:flex-end;border:1px solid rgba(255,255,255,.15);padding:32px}.hero-stat strong{font-size:4rem;line-height:1}.admin-layout{display:grid;gap:32px;padding:64px}.subject-bar{padding:0 64px;background:var(--canvas);border-bottom:1px solid rgba(255,255,255,.1);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}.subject-tabs{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}.subject-tabs::-webkit-scrollbar{display:none}.subject-tab{height:60px;padding:0 24px;background:transparent;border:0;border-bottom:3px solid transparent;color:var(--body);font-weight:500;cursor:pointer;white-space:nowrap;transition:all .2s ease;display:flex;align-items:center;gap:8px}.subject-tab:hover{color:var(--ink);background:#ffffff0a}.subject-tab.active{color:var(--rosso);border-bottom-color:var(--rosso);background:#da291c0d}.subject-tab.add-tab{color:var(--body);font-style:italic}.subject-tab.add-tab:hover{color:var(--rosso)}.new-subject-inline{display:flex;align-items:center;gap:8px;padding:0 16px}.new-subject-inline input{height:36px;background:#222;border:1px solid #444;color:#fff;padding:0 10px;font-size:14px;width:120px}.new-subject-inline button{height:36px;padding:0 12px;background:var(--rosso);border:0;color:#fff;font-size:13px;font-weight:600}.new-subject-inline button.ghost{background:transparent;color:var(--body)}.light-panel{background:var(--light);color:var(--light-ink);padding:32px;border:1px solid var(--hairline)}.section-header h2{margin:0;font-weight:500}.eyebrow{margin:0 0 8px;text-transform:uppercase;letter-spacing:.1em;font-size:11px}.eyebrow.dark{color:#666}.dark-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.dark-card{border:1px solid rgba(255,255,255,.12);background:var(--canvas-elevated);padding:32px;display:grid;gap:16px}.dark-card h3{margin-top:0;font-size:2rem;font-weight:500}.dark-card h2{margin:0;font-size:2rem;font-weight:500}.dark-card label{display:grid;gap:8px;color:var(--body)}.dark-card input,.dark-card textarea,.dark-card select{width:100%;border:1px solid rgba(255,255,255,.18);background:#181818;color:#fff;padding:12px 14px}.dark-card button{margin-top:16px;height:48px;padding:0 24px;border:0;background:var(--rosso);color:#fff;text-transform:uppercase;letter-spacing:.1em;font-weight:700}.button-row,.table-actions{display:flex;flex-wrap:wrap;gap:8px}.table-actions button{min-height:34px;border:1px solid #181818;background:#181818;color:#fff;padding:0 12px;cursor:pointer}.table-actions .danger-button{border-color:var(--rosso);background:var(--rosso)}.generator-panel{grid-template-columns:1fr}.generator-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.status-line{margin:0;color:var(--ink)}.subtle{color:var(--body);line-height:1.7}.error-copy{color:#ffb4ad}.primary-button,.outline-button{min-height:48px;padding:0 24px;cursor:pointer;font-weight:700;letter-spacing:.08em}.primary-button{border:0;background:var(--rosso);color:#fff}.outline-button{border:1px solid rgba(255,255,255,.22);background:transparent;color:#fff}.job-strip{display:flex;flex-wrap:wrap;gap:8px}.job-strip span{border:1px solid rgba(255,255,255,.16);padding:8px 10px;color:var(--body);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.progress-card{display:grid;gap:10px;padding:16px;border:1px solid rgba(255,255,255,.16);background:#18181859}.progress-card-header{display:flex;justify-content:space-between;gap:16px;align-items:center}.progress-bar-track{width:100%;height:10px;background:#ffffff1f;overflow:hidden}.progress-bar-fill{height:100%;background:var(--rosso);transition:width .18s ease}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:16px 0;border-bottom:1px solid var(--hairline);vertical-align:top}.appeal-row{display:flex;justify-content:space-between;gap:24px;border-top:1px solid var(--hairline);padding:16px 0}.appeal-row p{margin:8px 0 0;color:#444}.appeal-actions{display:grid;gap:8px;min-width:220px}.appeal-actions textarea{width:100%;border:1px solid var(--hairline);background:#fff;color:#181818;padding:10px 12px}.appeal-actions button{height:40px;border:0;background:#da291c;color:#fff;font-weight:700;letter-spacing:.08em}.student-shell{min-height:calc(100vh - 69px)}.student-hero{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:var(--spacing-lg);padding:var(--spacing-xl);background:linear-gradient(120deg,#181818f0,#181818b3),radial-gradient(circle at 80% 30%,rgba(218,41,28,.32),transparent 30%)}.student-hero h1{margin:0;max-width:16ch;font-size:clamp(2.3rem,5vw,4.6rem);font-weight:500;line-height:1.08;letter-spacing:0}.timer-card{display:grid;align-content:end;gap:10px;border:1px solid rgba(255,255,255,.15);padding:var(--spacing-lg);min-height:180px}.timer-card span{color:var(--body)}.timer-card strong{font-size:clamp(1.8rem,4vw,3.5rem);line-height:1}.join-layout{display:grid;place-items:center;padding:var(--spacing-xl)}.join-card,.side-card,.question-card,.section-card{border:1px solid rgba(255,255,255,.14);background:var(--canvas-elevated)}.join-card{width:min(560px,100%);display:grid;gap:var(--spacing-sm);padding:var(--spacing-lg)}.join-card label,.question-card label,.appeal-card{display:grid;gap:8px}.join-card input,.question-card textarea,.appeal-card textarea{width:100%;border:1px solid rgba(255,255,255,.18);background:#181818;color:#fff;padding:12px 14px}.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:var(--spacing-lg);padding:var(--spacing-xl)}.question-list{display:grid;gap:var(--spacing-lg)}.section-card{display:grid;gap:var(--spacing-md);padding:var(--spacing-lg)}.section-heading h2,.question-card h3{margin:0;font-weight:500}.question-card{display:grid;gap:var(--spacing-sm);padding:var(--spacing-md)}.question-label,.attempt-meta,.light-copy,.evidence-row,.audit-row{color:var(--body)}.option-list{display:grid;gap:10px}.option-card{grid-template-columns:auto 1fr;align-items:center;border:1px solid rgba(255,255,255,.12);padding:12px}.sidebar{display:grid;align-content:start;gap:var(--spacing-md)}.side-card{display:grid;gap:var(--spacing-sm);padding:var(--spacing-md)}.side-card.light{background:var(--light);color:var(--light-ink)}.attempt-meta,.audit-row,.evidence-row{display:flex;justify-content:space-between;gap:12px}.score-number{font-size:clamp(2.4rem,5vw,4rem);line-height:1}.appeal-card{margin-top:var(--spacing-sm)}.appeal-confirm{color:#b9f6ca}@media(max-width:960px){.admin-hero,.dark-grid,.generator-grid,.student-hero,.exam-layout{grid-template-columns:1fr}.admin-layout,.admin-hero,.student-hero,.exam-layout,.join-layout,.portal-home{padding:24px}.portal-nav{justify-content:stretch}.portal-nav button{flex:1;padding:0 8px}}