/* ============================================================
   Study Tools — shared styles
   Florida Life & Health License (2-15) study interface
   ============================================================ */

:root {
  --bg:        #0f1720;
  --panel:     #16212e;
  --panel-2:   #1d2c3d;
  --ink:       #e8eef5;
  --ink-soft:  #a9b8c8;
  --line:      #2b3c4f;
  --accent:    #2dd4bf;   /* teal */
  --accent-2:  #38bdf8;   /* sky  */
  --gold:      #f4c95d;   /* exam-tip highlight */
  --good:      #4ade80;
  --bad:       #f87171;
  --radius:    14px;
  --shadow:    0 10px 30px rgba(0,0,0,.35);
  --maxw:      980px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: radial-gradient(1200px 600px at 70% -10%, #1a2a3a 0%, var(--bg) 55%);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 28px 20px 80px; }

/* ---------- Header ---------- */
.site-head {
  display: flex; align-items: center; gap: 14px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px; margin-bottom: 26px;
}
.site-head .badge {
  font-weight: 700; font-size: 13px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--bg); background: var(--accent); padding: 6px 10px; border-radius: 8px;
}
.site-head h1 { font-size: 20px; margin: 0; font-weight: 650; }
.site-head .sub { color: var(--ink-soft); font-size: 13px; margin-left: auto; }

.crumb { color: var(--ink-soft); font-size: 13px; margin-bottom: 18px; }
.crumb a { color: var(--ink-soft); }

/* ---------- Cards / grid ---------- */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.tile {
  display: block; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
  transition: transform .12s ease, border-color .12s ease;
}
.tile:hover { transform: translateY(-3px); border-color: var(--accent); text-decoration: none; }
.tile .eyebrow { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.tile h3 { margin: 8px 0 6px; font-size: 17px; color: var(--ink); }
.tile p  { margin: 0; color: var(--ink-soft); font-size: 13.5px; }
.tile .meta { margin-top: 14px; font-size: 12px; color: var(--ink-soft); display: flex; gap: 12px; }

.section-label {
  margin: 34px 0 14px; font-size: 13px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-soft); border-bottom: 1px solid var(--line); padding-bottom: 8px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  background: var(--panel-2); color: var(--ink); border: 1px solid var(--line);
  padding: 10px 16px; border-radius: 10px; font-size: 14px; font-weight: 600;
  transition: background .12s, border-color .12s;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent); color: #06231f; border-color: var(--accent); }
.btn.primary:hover { background: #46e2cf; }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.pill { font-size: 12px; padding: 3px 9px; border-radius: 999px; background: var(--panel-2); border: 1px solid var(--line); color: var(--ink-soft); }

/* ---------- Flashcards ---------- */
.fc-stage { display: flex; flex-direction: column; align-items: center; gap: 22px; margin-top: 10px; }
.flashcard {
  width: 100%; max-width: 640px; min-height: 300px; perspective: 1600px; cursor: pointer;
}
.flashcard-inner {
  position: relative; width: 100%; min-height: 300px;
  transition: transform .5s cubic-bezier(.2,.8,.2,1); transform-style: preserve-3d;
}
.flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }
.face {
  position: absolute; inset: 0; backface-visibility: hidden;
  display: flex; flex-direction: column; justify-content: center;
  padding: 32px; border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.face .tag { position: absolute; top: 16px; left: 20px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.face.front { background: var(--panel); }
.face.front .tag { color: var(--accent); }
.face.back  { background: var(--panel-2); transform: rotateY(180deg); }
.face.back .tag { color: var(--gold); }
.face .content { font-size: 19px; text-align: center; }
.face.front .content { font-weight: 600; }
.face .hint { position: absolute; bottom: 14px; right: 20px; font-size: 11px; color: var(--ink-soft); }
.fc-controls { display: flex; align-items: center; gap: 14px; }
.fc-counter { color: var(--ink-soft); font-size: 14px; min-width: 90px; text-align: center; }
.progress { width: 100%; max-width: 640px; height: 6px; background: var(--panel); border-radius: 999px; overflow: hidden; }
.progress > i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); width: 0; transition: width .3s; }

/* ---------- Practice test ---------- */
.q-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 16px; box-shadow: var(--shadow); }
.q-num { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
.q-text { font-size: 16.5px; margin: 8px 0 16px; }
.opt { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 9px; cursor: pointer; transition: border-color .12s, background .12s; }
.opt:hover { border-color: var(--accent-2); }
.opt input { margin-top: 3px; accent-color: var(--accent); }
.opt.correct { border-color: var(--good); background: rgba(74,222,128,.08); }
.opt.wrong   { border-color: var(--bad);  background: rgba(248,113,113,.08); }
.opt .label { flex: 1; }
.explain { margin-top: 12px; padding: 12px 14px; border-left: 3px solid var(--gold); background: rgba(244,201,93,.07); border-radius: 6px; font-size: 14px; color: var(--ink-soft); display: none; }
.explain.show { display: block; }
.explain b { color: var(--ink); }
.scorebar { position: sticky; top: 0; z-index: 5; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 20px; display: flex; align-items: center; gap: 16px; box-shadow: var(--shadow); }
.score-big { font-size: 22px; font-weight: 700; }
.score-good { color: var(--good); } .score-mid { color: var(--gold); } .score-bad { color: var(--bad); }

.empty { color: var(--ink-soft); font-size: 14px; padding: 30px; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); }

.foot { margin-top: 50px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 12.5px; }
kbd { background: var(--panel-2); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px; font-size: 12px; font-family: inherit; }