/* SU — Sindh University Tests — Dark Emerald Theme */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Inter',sans-serif;background:#030f0a;color:#fff;min-height:100vh;overflow-x:hidden;transition:background .3s,color .3s;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;}

:root{
  --acc:#10b981;--acc-light:#6ee7b7;--acc2:#059669;
  --bg:#030f0a;--bg2:rgba(255,255,255,0.03);--bg3:rgba(255,255,255,0.06);
  --border:rgba(255,255,255,0.07);--text:rgba(255,255,255,0.85);--muted:rgba(255,255,255,0.38);
  --nav-bg:rgba(3,15,10,.9);--card-bg:rgba(255,255,255,.03);
  --input-bg:rgba(255,255,255,.04);--input-text:#fff;--input-ph:rgba(255,255,255,.2);
  --table-hover:rgba(255,255,255,.015);
  --eng:#8b5cf6;--gk:#3b82f6;--sci:#06b6d4;--math:#f59e0b;
}


/* ── Light Mode Variable Overrides ── */
body.light-mode{
  --bg:#f4faf6;--bg2:#ffffff;--bg3:#ecf4ef;
  --border:rgba(0,0,0,0.09);--text:#0d3d27;--muted:#5a7a68;
  --nav-bg:rgba(240,250,246,0.97);--card-bg:#ffffff;
  --input-bg:#f9fbf9;--input-text:#0d3d27;--input-ph:#9ab5a0;
  --table-hover:rgba(0,0,0,.02);
  background:#f4faf6;color:#0d3d27;
}
body.light-mode .s-nav{background:var(--nav-bg);border-bottom:1px solid var(--border);box-shadow:0 1px 8px rgba(0,0,0,.05);}
body.light-mode .s-nav-brand{color:var(--text);}
body.light-mode .s-nav-link{color:var(--muted);}
body.light-mode .s-nav-link:hover,.s-nav-link.active{color:var(--text);}
body.light-mode .s-hero-title{color:#0d1f12;}
body.light-mode .s-card{background:var(--card-bg);color:var(--text);}
body.light-mode .s-heading{color:#0d1f12;}
body.light-mode .s-subhead{color:var(--muted);}
body.light-mode .s-footer{color:rgba(0,0,0,.35);}
body.light-mode .result-hero{background:var(--card-bg);}
body.light-mode .r-stat{background:var(--card-bg);}
body.light-mode .ans-block{background:var(--card-bg);}
body.light-mode .ans-q{color:var(--text);}
/* ── Nav ── */
.s-nav{position:sticky;top:0;z-index:200;padding:.8rem 1.5rem;display:flex;align-items:center;justify-content:space-between;background:var(--nav-bg);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);}
.s-nav-brand{display:flex;align-items:center;gap:9px;color:var(--text);font-family:'Poppins',sans-serif;font-weight:800;font-size:.95rem;}
.s-nav-brand .brand-dot{width:9px;height:9px;border-radius:50%;background:var(--acc);box-shadow:0 0 8px var(--acc);}
.s-nav-links{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;}
.s-nav-link{font-size:.78rem;color:var(--muted);font-weight:500;transition:color .2s;padding:4px 0;}
.s-nav-link:hover,.s-nav-link.active{color:var(--text);}
.s-nav-user{font-size:.78rem;color:var(--acc-light);font-weight:600;}
.s-nav-btn{display:inline-flex;align-items:center;gap:6px;padding:.4rem .9rem;border-radius:8px;font-size:.75rem;font-weight:700;cursor:pointer;border:none;transition:all .2s;}
.s-nav-btn-ghost{background:transparent;border:1px solid var(--border);color:var(--muted);}
.s-nav-btn-ghost:hover{border-color:rgba(16,185,129,.4);color:var(--acc-light);}
.s-nav-btn-primary{background:linear-gradient(135deg,#059669,#10b981);color:#fff;box-shadow:0 4px 16px rgba(16,185,129,.25);}
.s-nav-btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 24px rgba(16,185,129,.4);}
@media(max-width:640px){.s-nav-links{gap:.3rem;}.s-nav-link{font-size:.7rem;}}

/* ── Page ── */
.s-page{max-width:960px;margin:0 auto;padding:2rem 1.5rem;}
.s-page-sm{max-width:480px;margin:0 auto;padding:2rem 1.5rem;}

/* ── Badges ── */
.s-pill{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;border-radius:100px;font-size:.68rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;}
.s-pill-indigo{background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.25);color:var(--acc-light);}
.s-pill-violet{background:rgba(139,92,246,.12);border:1px solid rgba(139,92,246,.25);color:#c4b5fd;}
.s-pill-blue{background:rgba(59,130,246,.12);border:1px solid rgba(59,130,246,.25);color:#93c5fd;}
.s-pill-teal{background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.25);color:#67e8f9;}
.s-pill-amber{background:rgba(245,158,11,.12);border:1px solid rgba(245,158,11,.25);color:#fde68a;}
.s-pill-green{background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.25);color:#86efac;}
.s-pill-red{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.25);color:#fca5a5;}

/* ── Headings ── */
.s-heading{font-family:'Poppins',sans-serif;font-size:clamp(1.5rem,3vw,2.2rem);font-weight:900;line-height:1.15;margin:.5rem 0 .4rem;}
.s-subhead{font-size:.88rem;color:var(--muted);line-height:1.6;max-width:560px;}

/* ── Hero (matches MDCAT / LAT quality) ── */
.s-hero{padding:2.5rem 0 1.8rem;}
.s-badge-pill{display:inline-flex;align-items:center;gap:7px;background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.28);color:var(--acc-light);border-radius:100px;padding:5px 16px;font-size:.68rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase;margin-bottom:.9rem;}
.s-hero-title{font-family:'Poppins',sans-serif;font-size:clamp(1.7rem,4vw,2.6rem);font-weight:900;line-height:1.1;color:#fff;margin:0 0 .5rem;}
.s-hero-sub{font-size:.88rem;color:var(--muted);line-height:1.6;margin:0 0 1.1rem;}
.s-stat-bar{display:flex;gap:1.3rem;flex-wrap:wrap;margin-bottom:1.2rem;align-items:center;}
.s-stat-item{font-size:.8rem;color:rgba(255,255,255,.42);display:flex;align-items:center;gap:.35rem;}
.s-stat-item i{font-size:.75rem;}
.s-subj-bar{display:flex;gap:.45rem;flex-wrap:wrap;margin-bottom:1.8rem;}
.s-subj-chip{font-size:.68rem;font-weight:700;padding:4px 12px;border-radius:100px;letter-spacing:.03em;}

/* ── Card ── */
.s-card{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:1.4rem;}

/* ── Test cards ── */
.subj-section{margin-bottom:2rem;}
.subj-header{display:flex;align-items:center;gap:.7rem;margin-bottom:.9rem;}
.subj-icon{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:.85rem;flex-shrink:0;}
.subj-name{font-family:'Poppins',sans-serif;font-size:.95rem;font-weight:800;color:var(--text);}
.subj-count{font-size:.72rem;color:var(--muted);}

.tests-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(155px,1fr));gap:.75rem;}
.t-card{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1rem;position:relative;overflow:hidden;transition:border-color .22s,transform .22s;cursor:pointer;display:block;}
.t-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;opacity:0;transition:opacity .22s;}
.t-card:hover::before{opacity:1;}
.t-card:hover{transform:translateY(-3px);}
.t-num{font-family:'Poppins',sans-serif;font-size:1.6rem;font-weight:900;line-height:1;margin-bottom:.4rem;}
.t-title{font-size:.73rem;font-weight:600;color:var(--text);line-height:1.3;margin-bottom:.5rem;}
.t-cat{font-size:.63rem;color:var(--muted);margin-bottom:.6rem;}
.t-meta{display:flex;align-items:center;gap:.5rem;font-size:.65rem;color:var(--muted);}
.t-score-chip{display:inline-flex;align-items:center;font-size:.6rem;font-weight:800;padding:2px 8px;border-radius:100px;margin-top:.4rem;}
.t-done-mark{position:absolute;top:.6rem;right:.6rem;width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.5rem;}

/* English */
.subj-eng .t-card::before{background:linear-gradient(90deg,var(--eng),#a78bfa);}
.subj-eng .t-card:hover{border-color:rgba(139,92,246,.35);}
.subj-eng .t-num{color:rgba(139,92,246,.25);}
.subj-eng .t-score-chip{background:rgba(139,92,246,.15);color:#c4b5fd;border:1px solid rgba(139,92,246,.25);}
.subj-eng .t-done-mark{background:rgba(139,92,246,.2);color:#c4b5fd;}
/* GK */
.subj-gk .t-card::before{background:linear-gradient(90deg,var(--gk),#60a5fa);}
.subj-gk .t-card:hover{border-color:rgba(59,130,246,.35);}
.subj-gk .t-num{color:rgba(59,130,246,.25);}
.subj-gk .t-score-chip{background:rgba(59,130,246,.15);color:#93c5fd;border:1px solid rgba(59,130,246,.25);}
.subj-gk .t-done-mark{background:rgba(59,130,246,.2);color:#93c5fd;}
/* Science */
.subj-sci .t-card::before{background:linear-gradient(90deg,var(--sci),#22d3ee);}
.subj-sci .t-card:hover{border-color:rgba(6,182,212,.35);}
.subj-sci .t-num{color:rgba(6,182,212,.25);}
.subj-sci .t-score-chip{background:rgba(6,182,212,.15);color:#67e8f9;border:1px solid rgba(6,182,212,.25);}
.subj-sci .t-done-mark{background:rgba(6,182,212,.2);color:#67e8f9;}
/* Math */
.subj-math .t-card::before{background:linear-gradient(90deg,var(--math),#fbbf24);}
.subj-math .t-card:hover{border-color:rgba(245,158,11,.35);}
.subj-math .t-num{color:rgba(245,158,11,.25);}
.subj-math .t-score-chip{background:rgba(245,158,11,.15);color:#fde68a;border:1px solid rgba(245,158,11,.25);}
.subj-math .t-done-mark{background:rgba(245,158,11,.2);color:#fde68a;}

/* ── Buttons ── */
.s-btn{display:inline-flex;align-items:center;gap:8px;padding:.75rem 1.6rem;border-radius:10px;font-family:'Poppins',sans-serif;font-weight:700;font-size:.85rem;cursor:pointer;border:none;transition:all .2s;}
.s-btn-primary{background:linear-gradient(135deg,#059669,#10b981);color:#fff;box-shadow:0 4px 20px rgba(16,185,129,.25);}
.s-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(16,185,129,.45);color:#fff;}
.s-btn-ghost{background:transparent;border:1px solid var(--border);color:var(--muted);}
.s-btn-ghost:hover{border-color:rgba(16,185,129,.35);color:var(--acc-light);}
.s-btn-sm{padding:.45rem 1rem;font-size:.75rem;}
.s-btn-full{width:100%;justify-content:center;}

/* ── Auth ── */
.auth-wrap{background:var(--card-bg);border:1px solid var(--border);border-radius:18px;padding:2.2rem;}
.auth-logo{text-align:center;margin-bottom:1.8rem;}
.auth-logo-icon{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,#059669,#10b981);display:flex;align-items:center;justify-content:center;margin:0 auto .8rem;box-shadow:0 8px 24px rgba(16,185,129,.3);}
.auth-logo-icon i{font-size:1.5rem;color:#fff;}
.auth-logo h2{font-family:'Poppins',sans-serif;font-size:1.4rem;font-weight:800;color:var(--text);}
.auth-logo p{font-size:.8rem;color:var(--muted);margin-top:.3rem;}
.tab-row{display:flex;border-radius:10px;background:rgba(255,255,255,.04);padding:4px;gap:4px;margin-bottom:1.5rem;}
.tab-btn{flex:1;padding:.55rem;border-radius:7px;border:none;background:transparent;color:var(--muted);font-size:.8rem;font-weight:700;cursor:pointer;transition:all .2s;}
.tab-btn.active{background:rgba(16,185,129,.15);color:var(--acc-light);}

/* ── Form ── */
.s-form-group{margin-bottom:1rem;}
.s-label{display:block;font-size:.75rem;font-weight:600;color:var(--muted);margin-bottom:.4rem;letter-spacing:.03em;}
.s-input{width:100%;padding:.7rem 1rem;background:var(--input-bg);border:1px solid var(--border);border-radius:9px;color:var(--input-text);font-size:.88rem;transition:border-color .2s;font-family:'Inter',sans-serif;}
.s-input:focus{outline:none;border-color:rgba(16,185,129,.45);background:rgba(16,185,129,.04);}
.s-input::placeholder{color:var(--input-ph);}

/* ── Alert ── */
.s-alert{padding:.8rem 1.1rem;border-radius:9px;font-size:.82rem;display:flex;align-items:flex-start;gap:.6rem;margin-bottom:1rem;}
.s-alert-err{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.2);color:#fca5a5;}
.s-alert-ok{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.2);color:#86efac;}
.s-alert-warn{background:rgba(245,158,11,.1);border:1px solid rgba(245,158,11,.2);color:#fde68a;}

/* ── Stats ── */
.stats-row{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.5rem;}
.stat-box{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1rem 1.2rem;flex:1;min-width:100px;}
.stat-num{font-family:'Poppins',sans-serif;font-size:1.6rem;font-weight:900;color:var(--acc-light);display:block;line-height:1;}
.stat-lbl{font-size:.68rem;color:var(--muted);margin-top:.3rem;display:block;text-transform:uppercase;letter-spacing:.04em;}

/* ── Dashboard nav cards ── */
.dash-grid{display:grid;grid-template-columns:1fr 1fr;gap:.9rem;margin-bottom:1.5rem;}
.dash-card{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:1.3rem;display:flex;flex-direction:column;align-items:center;text-align:center;cursor:pointer;transition:border-color .22s,transform .22s;position:relative;overflow:hidden;}
.dash-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;opacity:0;transition:opacity .2s;}
.dash-card:hover::before{opacity:1;}
.dash-card:hover{transform:translateY(-3px);}
.dash-card-icon{width:50px;height:50px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:.8rem;}
.dash-card-title{font-family:'Poppins',sans-serif;font-size:.88rem;font-weight:800;color:var(--text);margin-bottom:.25rem;}
.dash-card-sub{font-size:.7rem;color:var(--muted);line-height:1.35;}

/* ── Quiz page ── */
.qa-nav{position:sticky;top:0;z-index:100;background:var(--bg);border-bottom:1px solid var(--border);padding:.8rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;}
.qa-timer{font-family:'Poppins',sans-serif;font-size:1.1rem;font-weight:800;color:var(--acc-light);}
.qa-timer.warning{color:#fde68a!important;}
.qa-timer.danger{color:#fca5a5!important;animation:blink 1s infinite;}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.4;}}
.qa-progress{height:3px;background:rgba(255,255,255,.06);}
.qa-progress-fill{height:100%;background:linear-gradient(90deg,var(--acc),var(--acc-light));transition:width .3s;}

.q-block{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;padding:1.4rem;margin-bottom:1rem;}
.q-num{font-size:.7rem;font-weight:700;color:var(--muted);margin-bottom:.5rem;display:flex;align-items:center;gap:.4rem;}
.q-num-badge{background:rgba(16,185,129,.12);color:var(--acc-light);border:1px solid rgba(16,185,129,.2);border-radius:100px;padding:2px 8px;font-size:.6rem;}
.q-text{font-size:.92rem;color:var(--text);line-height:1.55;margin-bottom:1rem;font-weight:500;}
.q-opts{display:flex;flex-direction:column;gap:.5rem;}
.q-opt{display:flex;align-items:center;gap:.7rem;padding:.65rem .9rem;border-radius:9px;border:1px solid var(--border);cursor:pointer;transition:border-color .18s,background .18s;}
.q-opt:hover{border-color:rgba(16,185,129,.3);background:rgba(16,185,129,.04);}
.q-opt input[type=radio]{display:none;}
.q-opt input[type=radio]:checked + .q-opt-letter{background:var(--acc);border-color:var(--acc);color:#fff;}
.q-opt:has(input:checked){border-color:rgba(16,185,129,.45);background:rgba(16,185,129,.07);}
.q-opt-letter{width:26px;height:26px;min-width:26px;border-radius:50%;border:1.5px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:800;transition:all .18s;}
.q-opt-text{font-size:.85rem;color:var(--text);}
.q-submit-bar{position:fixed;bottom:0;left:0;right:0;background:rgba(3,15,10,.96);backdrop-filter:blur(16px);border-top:1px solid var(--border);padding:.9rem 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;z-index:100;}
.q-answered-ctr{font-size:.8rem;color:var(--muted);}
.q-answered-ctr strong{color:var(--acc-light);}

/* ── Result page ── */
.result-hero{text-align:center;padding:3rem 1.5rem 2rem;}
.score-ring{width:140px;height:140px;border-radius:50%;margin:0 auto 1.2rem;display:flex;align-items:center;justify-content:center;position:relative;}
.score-ring-inner{width:110px;height:110px;border-radius:50%;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;}
.score-pct{font-family:'Poppins',sans-serif;font-size:1.9rem;font-weight:900;line-height:1;}
.score-of{font-size:.65rem;color:var(--muted);margin-top:.2rem;}
.result-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.8rem;margin:1.5rem 0;}
@media(min-width:580px){.result-grid{grid-template-columns:repeat(4,1fr);}}
.r-stat{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1rem;text-align:center;}
.r-stat-num{font-family:'Poppins',sans-serif;font-size:1.5rem;font-weight:800;}
.r-stat-lbl{font-size:.65rem;color:var(--muted);margin-top:.3rem;display:block;}

/* answer review */
.ans-block{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:1.1rem;margin-bottom:.7rem;}
.ans-block.correct{border-color:rgba(34,197,94,.3);}
.ans-block.wrong{border-color:rgba(239,68,68,.25);}
.ans-q{font-size:.85rem;color:var(--text);font-weight:500;margin-bottom:.7rem;line-height:1.45;}
.ans-opt{font-size:.78rem;padding:.4rem .7rem;border-radius:7px;margin-bottom:.3rem;display:flex;align-items:center;gap:.5rem;}
.ans-opt-correct{background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.25);color:#86efac;}
.ans-opt-wrong{background:rgba(239,68,68,.08);border:1px solid rgba(239,68,68,.2);color:#fca5a5;}
.ans-opt-neutral{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);color:var(--muted);}
.ans-exp{font-size:.73rem;color:var(--muted);margin-top:.6rem;padding:.5rem .7rem;background:rgba(16,185,129,.06);border-radius:7px;border-left:2px solid rgba(16,185,129,.3);}

/* ── Leaderboard ── */
.lb-card{background:var(--card-bg);border:1px solid var(--border);border-radius:14px;overflow:hidden;}
.lb-row{display:flex;align-items:center;gap:1rem;padding:.9rem 1.2rem;border-bottom:1px solid rgba(255,255,255,.04);transition:background .18s;}
.lb-row:last-child{border-bottom:none;}
.lb-row:hover{background:rgba(255,255,255,.015);}
.lb-rank{font-family:'Poppins',sans-serif;font-size:.95rem;font-weight:900;width:28px;text-align:center;flex-shrink:0;}
.lb-rank.r1{color:#fde68a;}
.lb-rank.r2{color:#e2e8f0;}
.lb-rank.r3{color:#f9a96e;}
.lb-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--acc),var(--acc2));display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:800;flex-shrink:0;overflow:hidden;}
.lb-avatar img{width:100%;height:100%;object-fit:cover;}
.lb-name{font-size:.85rem;font-weight:700;color:var(--text);flex:1;}
.lb-tests{font-size:.7rem;color:var(--muted);}
.lb-score{font-family:'Poppins',sans-serif;font-size:.95rem;font-weight:800;color:var(--acc-light);}
.lb-you{background:rgba(16,185,129,.06);border-left:2px solid var(--acc);}

/* ── Footer ── */
.s-footer{text-align:center;padding:2rem 1.5rem;font-size:.72rem;color:var(--muted);border-top:1px solid var(--border);margin-top:3rem;}

/* ── Table ── */
.s-table{width:100%;border-collapse:collapse;font-size:.82rem;}
.s-table th{text-align:left;padding:.7rem .9rem;font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);border-bottom:1px solid var(--border);}
.s-table td{padding:.75rem .9rem;border-bottom:1px solid rgba(255,255,255,.04);color:var(--text);}
.s-table tr:hover td{background:rgba(255,255,255,.015);}