@import url("https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:wght@400;700&display=swap");
/* GS portal additions on top of styles.css + test-series.css */
.gs-wrap{max-width:1100px;margin:0 auto;padding:24px 16px}
.gs-card{background:var(--glass-strong);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;backdrop-filter:blur(18px)}
.gs-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.gs-tile{cursor:pointer;transition:transform .15s}.gs-tile:hover{transform:translateY(-3px)}
.gs-tile h3{margin:.2em 0}.gs-muted{color:var(--muted);font-size:.92em}
.gs-btn{display:inline-block;border:0;border-radius:14px;padding:10px 18px;font-weight:600;cursor:pointer;background:var(--navy);color:#fff;text-decoration:none;font-size:15px}
.gs-btn.alt{background:#fff;color:var(--navy);border:1px solid #cfd8e3}.gs-btn.gold{background:var(--gold);color:var(--navy)}
.gs-btn:disabled{opacity:.5;cursor:not-allowed}
.gs-input,select.gs-input{width:100%;padding:10px 12px;border-radius:12px;border:1px solid #cfd8e3;font-size:15px;margin:4px 0 12px;background:#fff}
.gs-list{display:grid;gap:8px}.gs-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 14px;border-radius:14px;background:#fff;border:1px solid #e3e8ef}
.gs-hide{display:none!important}.gs-err{color:#c0002a;font-weight:600}
.gs-stub{background:#fff3cd;border:1px solid #ffd60a;border-radius:12px;padding:8px 12px;margin-bottom:12px;font-size:.9em}
.gs-top{display:flex;justify-content:space-between;align-items:center;gap:10px}
.gs-opt{display:block;width:100%;text-align:left;margin:6px 0;padding:12px 14px;border-radius:14px;border:1px solid #d5dde8;background:#fff;cursor:pointer;font-size:15px}
.gs-opt.sel{border-color:var(--blue);background:#e8f2ff}.gs-opt.ok{background:#e3f9e8;border-color:var(--mint)}.gs-opt.bad{background:#ffe5ea;border-color:var(--maroon)}
.gs-pal{display:grid;grid-template-columns:repeat(auto-fill,minmax(38px,1fr));gap:6px;max-height:340px;overflow:auto}
.gs-pal button{padding:6px 0;border-radius:8px;border:1px solid #cfd8e3;background:#fff;cursor:pointer}
.gs-pal .ans{background:var(--mint);color:#fff}.gs-pal .mk{background:var(--violet);color:#fff}.gs-pal .cur{outline:2px solid var(--navy)}
.gs-exam{display:grid;grid-template-columns:1fr 260px;gap:16px}@media(max-width:800px){.gs-exam{grid-template-columns:1fr}}
.gs-timer{font-variant-numeric:tabular-nums;font-weight:700;font-size:20px}.gs-timer.low{color:#c0002a}
.gs-modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:50}
.gs-big{font-size:44px;font-weight:800}

/* question tables + explanations */
.gs-qtable{border-collapse:collapse;margin:10px 0;white-space:normal;font-size:15px;max-width:100%;display:block;overflow-x:auto}
.gs-qtable th,.gs-qtable td{border:1px solid #c9ced6;padding:6px 10px;text-align:left;vertical-align:top}
.gs-qtable thead th{background:rgba(0,0,0,.06);font-weight:700}
.gs-qtable tbody tr:nth-child(even) td{background:rgba(0,0,0,.025)}
.gs-expl{margin-top:8px;padding:10px 12px;border-left:3px solid #d4a017;background:rgba(212,160,23,.08);border-radius:6px}
.gs-badge{display:inline-block;font-size:12px;padding:2px 8px;border-radius:10px;background:#e8eefc;color:#2a4a8a;margin-left:6px}
.gs-hint{font-size:12px;opacity:.75;font-weight:normal}

/* ===== Redesign: theme, quadrants, accessibility (v2) ===== */
:root{--q-full:#1d4ed8;--q-subj:#047857;--q-cust:#b45309;--q-perf:#7e22ce;--ink:#0f172a}
body.ts-body{font-family:"Atkinson Hyperlegible",Verdana,Segoe UI,Arial,sans-serif;font-size:18px;line-height:1.6;color:var(--ink);background:linear-gradient(180deg,#e9eef7 0%,#f5f7fb 60%) fixed}
body.ts-body .topbar{background:#0B1F3A;color:#fff;border-bottom:4px solid var(--gold,#d4a017)}
body.ts-body .topbar .brand-text,body.ts-body .topbar #who{color:#fff;font-weight:700;font-size:1.05em}
body.ts-body .topbar .gs-btn.alt{background:#fff;color:#0B1F3A}
.gs-wrap{max-width:1180px}
.gs-card{background:#fff;border:2px solid #c7d2e3;box-shadow:0 4px 14px rgba(15,23,42,.08);backdrop-filter:none}
.gs-card h1,.gs-card h2,.gs-card h3{color:#0B1F3A;line-height:1.25}
.gs-card h2{font-size:1.5em;padding-bottom:8px;border-bottom:3px solid var(--gold,#d4a017);margin-top:0}
.gs-muted{color:#334155;font-size:.95em}
.gs-hint{font-size:.8em;opacity:1;color:#475569}
label{font-weight:700;color:#0f172a}
.gs-btn{font-size:17px;padding:12px 20px;border-radius:12px}
.gs-btn:focus-visible,.gs-opt:focus-visible,.gs-tile:focus-visible,.gs-input:focus-visible{outline:3px solid #f59e0b;outline-offset:2px}
.gs-input,select.gs-input{font-size:17px;border:2px solid #94a3b8;color:var(--ink)}
.gs-row{background:#f8fafc;border:2px solid #d5dde8;font-size:17px}
.gs-row:nth-child(even){background:#eef2f8}
.gs-hero{background:linear-gradient(120deg,#0B1F3A,#1e3a6e);color:#fff;border-radius:18px;padding:20px 24px;margin-bottom:18px;border-left:8px solid var(--gold,#d4a017)}
.gs-hero h1{margin:0;font-size:1.6em;color:#fff}.gs-hero p{margin:4px 0 0;color:#e2e8f0}
/* quadrants */
.gs-quads{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}@media(max-width:640px){.gs-quads{grid-template-columns:1fr}}
.gs-tile{color:#fff;border:0;min-height:150px;position:relative;overflow:hidden;padding:24px 24px 24px 110px}
.gs-tile h3{color:#fff;font-size:1.45em;margin:0 0 4px}.gs-tile p{margin:0;color:#fff;opacity:.95;font-size:1em}
.gs-tile:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(15,23,42,.25)}
.q-ico{position:absolute;left:22px;top:50%;transform:translateY(-50%);width:68px;height:68px;border-radius:18px;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;border:2px solid rgba(255,255,255,.55)}
.q-ico svg{width:38px;height:38px;color:#fff}
.q-full{background:linear-gradient(135deg,#1e40af,#3b82f6)}.q-subj{background:linear-gradient(135deg,#065f46,#10b981)}
.q-cust{background:linear-gradient(135deg,#9a3412,#f59e0b)}.q-perf{background:linear-gradient(135deg,#6b21a8,#c026d3)}
.gs-tile.active{outline:4px solid var(--gold,#d4a017);outline-offset:3px}
section[data-theme="full"]{border-top:8px solid var(--q-full);background:#f3f7ff}
section[data-theme="subject"]{border-top:8px solid var(--q-subj);background:#f1fbf6}
section[data-theme="custom"]{border-top:8px solid var(--q-cust);background:#fffaf0}
section[data-theme="perf"]{border-top:8px solid var(--q-perf);background:#faf5ff}
/* All checkbox */
.gs-allbox{display:inline-flex!important;align-items:center;gap:10px;margin:6px 0 8px;padding:8px 14px;border:2px solid var(--q-subj);border-radius:10px;background:#ecfdf5;cursor:pointer;font-weight:700;width:auto}
.gs-allbox input{width:22px;height:22px;margin:0;flex:0 0 auto;accent-color:var(--q-subj)}
.gs-allbox span{line-height:1}
#subTopics{margin-top:4px}
input[type=checkbox]{width:20px;height:20px;vertical-align:middle;accent-color:#0B1F3A}
/* exam */
#qText{font-size:20px!important;line-height:1.65!important;color:var(--ink)}
.gs-top{background:#0B1F3A;color:#fff;margin:-22px -22px 0;padding:12px 22px;border-radius:var(--radius) var(--radius) 0 0}
.gs-top .gs-muted{color:#e2e8f0}
.gs-opt{font-size:18px;border:2px solid #94a3b8;padding:14px 16px;color:var(--ink)}
.gs-opt:hover{background:#f1f5f9}
.gs-opt.sel{border-color:#1d4ed8;background:#dbeafe;box-shadow:inset 6px 0 0 #1d4ed8}
.gs-pal button{font-size:16px;font-weight:700;border:2px solid #94a3b8;padding:8px 0}
.gs-pal .ans{background:#047857;border-color:#047857}.gs-pal .mk{background:#7e22ce;border-color:#7e22ce}.gs-pal .cur{outline:3px solid #f59e0b}
.gs-exam aside.gs-card{background:#f1f5f9}
.gs-timer{font-size:24px;color:#fff;background:#1e3a6e;padding:4px 12px;border-radius:10px}.gs-timer.low{background:#b91c1c;color:#fff}
.gs-btn.exam{background:#16a34a;color:#fff;border:1px solid #15803d}.gs-btn.exam:hover:not(:disabled){background:#15803d}

/* Answer explanations (review) */
.gs-expl{margin-top:10px;padding:10px 12px;border-left:4px solid #2e7d32;background:rgba(46,125,50,.08);border-radius:6px}
.gs-expl-h{font-weight:700;font-size:13px;color:#2e7d32;text-transform:uppercase;letter-spacing:.04em;margin-bottom:4px}
.gs-expl-b{white-space:pre-wrap;line-height:1.5}