/* ============================================================
   PSYC3302 Weeks 7–12 Study Hub — forest-green aesthetic
   ============================================================ */
:root{
  --paper:#f2efe7;
  --paper-2:#e9e4d6;
  --card:#fcfaf4;
  --ink:#19180f;
  --ink-mid:#56523f;
  --ink-faint:#8a856f;
  --line:#d9d2bd;
  --line-soft:#e6e0cf;
  --accent:#1f5734;          /* forest green */
  --accent-d:#143d24;
  --accent-soft:#dcebe0;
  --gold:#9a6b15;
  --gold-soft:#f0e4ca;
  --correct:#1d7048;
  --correct-bg:#dceee2;
  --wrong:#aa382d;
  --wrong-bg:#f3ddd7;
  --shadow:0 1px 2px rgba(25,24,15,.05), 0 12px 34px -16px rgba(25,24,15,.26);
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:"Spectral",Georgia,serif;font-size:18.5px;line-height:1.55;color:var(--ink);
  background:
    radial-gradient(1100px 480px at 85% -8%, rgba(31,87,52,.07), transparent 60%),
    radial-gradient(820px 420px at -8% 12%, rgba(154,107,21,.05), transparent 55%),
    var(--paper);
  background-attachment:fixed;-webkit-font-smoothing:antialiased;min-height:100vh;
}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");}
.shell{position:relative;z-index:1;max-width:880px;margin:0 auto;padding:0 20px 70px}

h1,h2,h3,h4{font-family:"Bricolage Grotesque","Spectral",serif;font-weight:700;line-height:1.08;letter-spacing:-.015em;margin:0}
.mono{font-family:"IBM Plex Mono",monospace}

.topbar{position:sticky;top:0;z-index:40;background:rgba(242,239,231,.88);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--line)}
.topbar-in{max-width:880px;margin:0 auto;padding:13px 20px 8px;display:flex;align-items:center;gap:13px}
.logo{height:42px;padding:0 12px;border-radius:11px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--accent),var(--accent-d));color:#f2efe7;
  font-family:"Bricolage Grotesque",serif;font-weight:700;font-size:17px;box-shadow:var(--shadow)}
.logo span{opacity:.6;margin:0 1px}
.brand .k{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}
.brand h1{font-size:18px;margin-top:1px}
nav.tabs{max-width:880px;margin:0 auto;padding:0 14px;display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
nav.tabs::-webkit-scrollbar{display:none}
nav.tabs button{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  background:none;border:none;cursor:pointer;color:var(--ink-mid);padding:10px 14px 12px;border-bottom:2px solid transparent;white-space:nowrap;transition:.18s}
nav.tabs button:hover{color:var(--ink)}
nav.tabs button.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}

main{padding-top:30px;min-height:60vh}
.view{display:none}
.view.active{display:block;animation:fade .35s both}
@keyframes fade{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:none}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.section-head{margin-bottom:18px}
.section-head h2{font-size:29px}
.section-head p{color:var(--ink-mid);margin:6px 0 0;font-size:16.5px;max-width:62ch}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:6px}

/* ---------- overview ---------- */
.hero{padding:30px 30px 26px;margin-bottom:22px;position:relative;overflow:hidden}
.hero::after{content:"ψ";position:absolute;right:-12px;bottom:-52px;font-family:"Bricolage Grotesque",serif;font-size:230px;color:var(--accent);opacity:.05;line-height:1}
.hero h2{font-size:31px;max-width:20ch}
.hero p{color:var(--ink-mid);max-width:62ch;margin:12px 0 0}
.week-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:13px;margin-top:22px}
.week-cell{background:var(--paper-2);border:1px solid var(--line-soft);border-radius:12px;padding:14px 16px;cursor:pointer;transition:.15s}
.week-cell:hover{border-color:var(--accent);background:#fff}
.week-cell .wk{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:3px}
.week-cell .wt{font-family:"Bricolage Grotesque",serif;font-weight:600;font-size:16.5px}
.week-cell .ws{font-size:14px;color:var(--ink-mid);line-height:1.4;margin-top:4px}
.ov-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}
@media(max-width:720px){.ov-row{grid-template-columns:1fr}}
.ov-card{padding:22px 24px}
.ov-card h3{font-size:19px;margin-bottom:10px}
.ov-card p{font-size:15.5px;color:var(--ink-mid);margin:0 0 10px}
.ring-wrap{display:flex;align-items:center;gap:18px}
.ring{position:relative;width:96px;height:96px;flex:0 0 auto}
.ring svg{transform:rotate(-90deg)}
.ring .num{position:absolute;inset:0;display:grid;place-items:center;font-family:"Bricolage Grotesque",serif;font-weight:700;font-size:22px}
.ring .num small{display:block;font-size:10.5px;color:var(--ink-faint);text-align:center;font-family:"IBM Plex Mono",monospace;font-weight:400}
.prog-stats{font-size:15px;color:var(--ink-mid)}
.prog-stats b{font-family:"Bricolage Grotesque",serif;color:var(--ink);font-size:17px}

/* ---------- notes ---------- */
.acc{margin-bottom:13px;overflow:hidden}
.acc-head{display:flex;align-items:center;gap:14px;width:100%;text-align:left;cursor:pointer;background:none;border:none;padding:18px 22px;font-family:inherit}
.acc-head .ac-week{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:#f2efe7;background:var(--accent);padding:4px 10px;border-radius:30px;flex:0 0 auto;white-space:nowrap}
.acc-head .ac-title{font-family:"Bricolage Grotesque",serif;font-weight:700;font-size:20px;color:var(--ink)}
.acc-head .ac-sub{font-size:14px;color:var(--ink-mid);font-style:italic;display:block;margin-top:2px}
.acc-head .chev{margin-left:auto;color:var(--ink-faint);transition:.25s;font-size:15px;flex:0 0 auto}
.acc.open .chev{transform:rotate(90deg);color:var(--accent)}
.acc-body{display:none;padding:0 24px 14px}
.acc.open .acc-body{display:block;animation:fade .3s both}
.note-sec{margin-top:8px}
.note-sec h4{font-size:16px;color:var(--accent-d);border-bottom:1px solid var(--line-soft);padding-bottom:7px;margin-bottom:4px;letter-spacing:.01em}
.pt{padding:12px 0;border-bottom:1px solid var(--line-soft)}
.pt:last-child{border-bottom:none}
.pt .term{font-family:"Bricolage Grotesque",serif;font-weight:600;font-size:15.5px;color:var(--ink);margin-bottom:3px}
.pt .def{font-size:15.5px;color:var(--ink-mid);line-height:1.5}
.pt .def b{color:var(--ink)} .pt .def i{font-style:italic}

/* ---------- quiz ---------- */
.quiz-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:18px}
.select-wrap{position:relative}
select{font-family:"Spectral",serif;font-size:15px;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:9px 34px 9px 13px;appearance:none;cursor:pointer;box-shadow:var(--shadow)}
.select-wrap::after{content:"▾";position:absolute;right:13px;top:50%;transform:translateY(-50%);color:var(--ink-faint);pointer-events:none;font-size:12px}
.btn{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.05em;text-transform:uppercase;cursor:pointer;
  border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;padding:9px 14px;transition:.16s;box-shadow:var(--shadow)}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.toggle.on{background:var(--gold-soft);border-color:var(--gold);color:var(--gold)}
.spacer{flex:1}
.qcount{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--ink-faint)}

.qcard{padding:22px 24px;margin-bottom:16px}
.qcard .qtop{display:flex;align-items:baseline;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.qcard .qnum{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.08em;color:var(--ink-faint)}
.qcard .chip{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.08em;text-transform:uppercase;background:var(--accent-soft);color:var(--accent-d);padding:4px 9px;border-radius:30px;white-space:nowrap}
.qcard .chip.src{background:var(--gold-soft);color:var(--gold)}
.qcard .qstem{font-family:"Bricolage Grotesque",serif;font-weight:600;font-size:19.5px;line-height:1.35;margin:4px 0 15px;letter-spacing:-.01em}
.opts{display:flex;flex-direction:column;gap:10px}
.opt{display:flex;flex-direction:column;width:100%;text-align:left;cursor:pointer;font-family:inherit;background:var(--paper);border:1.5px solid var(--line);border-radius:12px;padding:0;transition:.14s;overflow:hidden}
.opt:hover:not(.locked){border-color:var(--accent);background:#fff}
.opt .row{display:flex;gap:12px;align-items:flex-start;padding:13px 15px}
.opt .key{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--paper-2);border:1px solid var(--line);display:grid;place-items:center;font-family:"IBM Plex Mono",monospace;font-size:13px;font-weight:600;color:var(--ink-mid);margin-top:1px}
.opt .txt{font-size:16px;line-height:1.42;color:var(--ink);padding-top:2px}
.opt .mark{margin-left:auto;align-self:center;font-size:17px;opacity:0;transition:.2s}
.opt.locked{cursor:default}
.opt.correct{border-color:var(--correct);background:var(--correct-bg)}
.opt.correct .key{background:var(--correct);border-color:var(--correct);color:#fff}
.opt.correct .mark{opacity:1;color:var(--correct)}
.opt.chosen-wrong{border-color:var(--wrong);background:var(--wrong-bg)}
.opt.chosen-wrong .key{background:var(--wrong);border-color:var(--wrong);color:#fff}
.opt.chosen-wrong .mark{opacity:1;color:var(--wrong)}
.opt.dim{opacity:.72}
.opt .why{display:none;font-size:14.5px;line-height:1.46;color:var(--ink-mid);padding:0 15px 12px 53px;animation:fade .25s both}
.opt.revealed .why{display:block}
.opt .why b{color:var(--ink)}
.empty{padding:60px 20px;text-align:center;color:var(--ink-faint)}

/* ---------- flashcards ---------- */
.fc-bar{display:flex;gap:12px;align-items:center;margin-bottom:16px}
.fc-stage{display:grid;place-items:center;margin:8px 0 18px}
.flashcard{width:100%;max-width:660px;height:330px;perspective:1600px;cursor:pointer}
.fc-inner{position:relative;width:100%;height:100%;transition:transform .55s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}
.flashcard.flipped .fc-inner{transform:rotateY(180deg)}
.fc-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:18px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:32px 38px;box-shadow:var(--shadow)}
.fc-front{background:linear-gradient(160deg,#fcfaf4,#efe9d8);border:1px solid var(--line)}
.fc-front .fc-q{font-family:"Bricolage Grotesque",serif;font-weight:700;font-size:25px;color:var(--ink);line-height:1.2}
.fc-front .hint{position:absolute;bottom:17px;font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-faint)}
.fc-back{background:linear-gradient(160deg,var(--accent),var(--accent-d));border:1px solid var(--accent-d);transform:rotateY(180deg)}
.fc-back .fc-a{color:#eef4ee;font-size:17.5px;line-height:1.5}
.fc-nav{display:flex;align-items:center;justify-content:center;gap:16px}
.fc-pos{font-family:"IBM Plex Mono",monospace;font-size:13px;color:var(--ink-faint);min-width:80px;text-align:center}
.icon-btn{width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:var(--card);cursor:pointer;font-size:18px;color:var(--ink);box-shadow:var(--shadow);transition:.16s}
.icon-btn:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- key numbers ---------- */
.num-group{margin-bottom:20px;padding:20px 22px}
.num-group h3{font-size:18px;color:var(--accent-d);margin-bottom:12px;display:flex;align-items:center;gap:9px}
.num-group h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--gold)}
.num-row{display:flex;gap:16px;align-items:baseline;padding:9px 0;border-bottom:1px solid var(--line-soft)}
.num-row:last-child{border-bottom:none}
.num-row .nv{flex:0 0 130px;font-family:"IBM Plex Mono",monospace;font-weight:600;font-size:14.5px;color:var(--accent);text-align:right}
.num-row .nd{font-size:15px;color:var(--ink-mid);line-height:1.45}
@media(max-width:560px){.num-row{flex-direction:column;gap:2px}.num-row .nv{text-align:left;flex-basis:auto}}

footer{position:relative;z-index:1;text-align:center;color:var(--ink-faint);font-size:13.5px;font-style:italic;padding:10px 20px 44px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(18px);background:var(--ink);color:var(--paper);padding:11px 18px;border-radius:30px;font-size:14px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s;z-index:90}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media(max-width:560px){
  body{font-size:17.5px}
  .hero{padding:24px 20px}.hero h2{font-size:25px}
  .qcard{padding:18px 16px}.section-head h2{font-size:24px}
  .acc-head{padding:15px 16px}.acc-body{padding:0 16px 12px}
}