/* ==========================================================
   oFlipbook theme — playful pastel, frosted pills,
   purple labels, green actions, gold highlights
   ========================================================== */
:root{
  --ink:#141a33; --muted:#5b6385; --line:#e7e1f7; --card:rgba(255,255,255,.82);
  --purple:#7c3aed; --purple2:#a855f7; --purple-soft:#efe7ff;
  --green:#16a34a; --green2:#22c55e; --green-soft:#e7f8ee;
  --gold:#f5b70a; --gold2:#fde68a; --gold-soft:#fff6d6;
  --coral:#ef3b5d; --coral2:#ff6a3d;
  --bad:#d92d4b; --warn:#b45309; --ok:#15803d;
  --brand:var(--purple); --brand2:var(--purple);
  --r:22px; --pill:999px;
  --shadow:0 10px 30px rgba(76,52,140,.12), 0 2px 6px rgba(76,52,140,.06);
  --font:'Nunito', ui-rounded, 'SF Pro Rounded', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
*{box-sizing:border-box}
html{background:#fbf7ff}
body{margin:0;font:15px/1.5 var(--font);color:var(--ink);min-height:100vh;
  background:
    radial-gradient(900px 600px at -10% -10%, #ffd9ea 0%, transparent 60%),
    radial-gradient(800px 600px at 110% 0%, #e2d8ff 0%, transparent 55%),
    radial-gradient(900px 700px at 100% 100%, #d9f5e6 0%, transparent 55%),
    radial-gradient(700px 600px at 0% 100%, #fff1c9 0%, transparent 55%),
    #fbf7ff;
  background-attachment:fixed}
a{color:var(--purple);font-weight:700}
h1{font-size:28px;font-weight:900;letter-spacing:-.3px;margin:0 0 6px}
h2{font-size:18px;font-weight:900;margin:0 0 12px}
.muted{color:var(--muted)} .small{font-size:13px}
.hidden{display:none!important}

/* ---------- logo wordmark ---------- */
.wordmark{font-weight:900;font-size:24px;letter-spacing:-.6px;color:var(--ink);text-decoration:none;display:inline-flex;align-items:baseline;position:relative;line-height:1}
.wordmark .o{background:linear-gradient(135deg,var(--coral),var(--coral2));-webkit-background-clip:text;background-clip:text;color:transparent;font-style:italic;margin-right:1px}
.wordmark:after{content:"";position:absolute;left:18%;right:4%;bottom:-6px;height:4px;border-radius:4px;background:linear-gradient(90deg,var(--green),var(--green2))}

/* ---------- top bar ---------- */
header.app{position:sticky;top:10px;z-index:20;margin:10px auto 0;max-width:1180px;width:calc(100% - 24px);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 12px 10px 20px;
  background:rgba(255,255,255,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.9);border-radius:var(--pill);box-shadow:var(--shadow)}
header.app .logo{font-weight:900;font-size:22px;color:var(--ink);text-decoration:none;letter-spacing:-.5px}
header.app .logo span{background:linear-gradient(135deg,var(--purple),var(--purple2));-webkit-background-clip:text;background-clip:text;color:transparent;font-size:15px;margin-left:6px}
header.app .sp{flex:1}
header.app button,header.app .btn{background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:none;padding:8px 16px}
header.app button:hover,header.app .btn:hover{background:var(--purple-soft);border-color:#d8c8ff}

.asbar{max-width:1180px;margin:10px auto 0;width:calc(100% - 24px);background:var(--gold-soft);border:1px solid #f8df8b;color:#7a4b00;padding:10px 18px;border-radius:var(--pill);display:flex;gap:10px;align-items:center;font-weight:700}

main{max-width:1180px;margin:0 auto;padding:26px 22px 60px}

/* ---------- alerts ---------- */
.alert{padding:12px 20px;border-radius:var(--pill);margin-bottom:16px;display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-weight:600;box-shadow:0 4px 14px rgba(76,52,140,.06)}
.alert.bad{background:#ffe8ec;border:1px solid #ffc3cf;color:#9b1c33}
.alert.warn{background:var(--gold-soft);border:1px solid #f8df8b;color:#7a4b00}
.alert.ok{background:var(--green-soft);border:1px solid #b8ecc9;color:#0f5c2e}

/* ---------- buttons: pills ---------- */
button,.btn{font:inherit;font-weight:800;border:1px solid var(--line);background:#fff;color:var(--ink);padding:10px 20px;border-radius:var(--pill);cursor:pointer;
  text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;white-space:nowrap;transition:transform .12s, box-shadow .12s, background .12s;box-shadow:0 2px 6px rgba(76,52,140,.06)}
button:hover,.btn:hover{background:var(--purple-soft);transform:translateY(-1px)}
button:active,.btn:active{transform:translateY(1px)}
button.primary,.btn.primary{background:linear-gradient(180deg,var(--green2),var(--green));color:#fff;border:2px solid #fff;box-shadow:0 6px 16px rgba(22,163,74,.35)}
button.primary:hover,.btn.primary:hover{filter:brightness(1.05);background:linear-gradient(180deg,var(--green2),var(--green))}
button.gold,.btn.gold{background:linear-gradient(180deg,#fff3c4,var(--gold2));color:#5a3d00;border:1px solid #f4d36b;box-shadow:0 6px 16px rgba(245,183,10,.25)}
button.gold:hover,.btn.gold:hover{background:linear-gradient(180deg,#fff7d6,#fde68a)}
button.purple,.btn.purple{background:linear-gradient(180deg,var(--purple2),var(--purple));color:#fff;border:2px solid #fff;box-shadow:0 6px 16px rgba(124,58,237,.3)}
button.danger,.btn.danger{color:var(--bad);border-color:#ffc9d3;background:#fff}
button.danger:hover{background:#fff0f3}
button.sm,.btn.sm{padding:6px 12px;font-size:13px}
button:disabled{opacity:.5;cursor:default;transform:none}

/* ---------- inputs ---------- */
input[type=text],input[type=password],input[type=email],input[type=number],input[type=datetime-local],input[type=date],input[type=tel],textarea,select{
  font:inherit;font-weight:600;width:100%;padding:11px 16px;border:2px solid var(--line);border-radius:16px;background:rgba(255,255,255,.95);color:var(--ink);transition:border-color .15s, box-shadow .15s}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--purple2);box-shadow:0 0 0 4px rgba(168,85,247,.15)}
textarea{min-height:70px;resize:vertical}
label.f{display:block;margin-bottom:14px}
label.f>span{display:block;font-weight:800;font-size:13px;margin-bottom:5px;color:#3b3f63}
.chk{display:flex;align-items:center;gap:10px;margin:8px 0;cursor:pointer;font-weight:600}
.chk input{width:20px;height:20px;accent-color:var(--purple)}

/* ---------- cards ---------- */
.card{background:var(--card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.95);border-radius:var(--r);padding:22px;margin-bottom:20px;box-shadow:var(--shadow)}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.grid2{display:grid;grid-template-columns:330px 1fr;gap:20px}
@media(max-width:900px){.grid2{grid-template-columns:1fr}}
.section-split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:700px){.section-split{grid-template-columns:1fr}.hide-m{display:none!important}}

/* section label like "Missing Word" */
.tag{display:inline-block;background:linear-gradient(180deg,var(--purple2),var(--purple));color:#fff;font-weight:900;padding:6px 18px;border-radius:var(--pill);box-shadow:0 6px 16px rgba(124,58,237,.28);letter-spacing:.2px}

/* ---------- books grid ---------- */
.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.bk{background:var(--card);backdrop-filter:blur(10px);border:1px solid #fff;border-radius:var(--r);overflow:hidden;cursor:pointer;transition:.18s;box-shadow:var(--shadow)}
.bk:hover{transform:translateY(-4px) rotate(-.4deg);box-shadow:0 18px 40px rgba(76,52,140,.18)}
.bk .cv{aspect-ratio:3/4;background:linear-gradient(135deg,#f3ecff,#ffeef4) center/cover no-repeat;display:flex;align-items:center;justify-content:center;color:var(--muted);font-weight:700;margin:10px;border-radius:14px}
.bk .in{padding:4px 16px 16px}
.bk .t{font-weight:900;font-size:16px;margin-bottom:2px}

/* ---------- pills ---------- */
.pill{display:inline-block;padding:3px 11px;border-radius:var(--pill);font-size:12px;font-weight:800;background:#f1effa;color:#3b3f63}
.pill.ok{background:var(--green-soft);color:var(--ok)} .pill.bad{background:#ffe8ec;color:var(--bad)}
.pill.warn{background:var(--gold-soft);color:#8a5a00} .pill.blue{background:var(--purple-soft);color:var(--purple)}

/* ---------- upload / progress ---------- */
.drop{border:3px dashed #d6c6ff;border-radius:var(--r);padding:26px;text-align:center;background:rgba(243,236,255,.6);cursor:pointer;transition:.15s}
.drop:hover,.drop.over{border-color:var(--purple2);background:#efe5ff}
.bar{height:12px;background:#ece8f7;border-radius:var(--pill);overflow:hidden;margin-top:8px;box-shadow:inset 0 1px 3px rgba(0,0,0,.06)}
.bar>i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--green),var(--green2));border-radius:var(--pill);transition:width .25s}
.bar.full>i{background:linear-gradient(90deg,var(--coral),var(--coral2))}
.cover{width:100%;aspect-ratio:3/4;border-radius:18px;background:linear-gradient(135deg,#f3ecff,#ffeef4) center/contain no-repeat;border:1px solid #fff;margin-bottom:12px;box-shadow:inset 0 0 0 1px var(--line)}
.link{display:flex;gap:6px}
.link input{font-family:ui-monospace,Menlo,monospace;font-size:12px;background:#f8f6ff}

/* ---------- tables ---------- */
table{width:100%;border-collapse:separate;border-spacing:0}
th,td{text-align:left;padding:11px 10px;border-bottom:1px solid #efeaf9;vertical-align:top}
th{font-size:12px;color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:.4px}
tr:hover td{background:rgba(243,236,255,.35)}
.tablewrap{overflow-x:auto}
.tog{cursor:pointer;user-select:none;margin:0 3px 4px 0}
.tog.off{opacity:.45;text-decoration:line-through}
.acts{display:flex;flex-wrap:wrap;gap:5px}
.log td{font-size:13px}

/* ---------- auth ---------- */
.auth{max-width:440px;margin:7vh auto;padding:0 16px}
.auth .card{padding:30px}

/* ---------- toast ---------- */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(10px);background:linear-gradient(180deg,var(--green2),var(--green));color:#fff;font-weight:800;padding:12px 22px;border-radius:var(--pill);opacity:0;transition:.25s;pointer-events:none;z-index:99;box-shadow:0 10px 24px rgba(22,163,74,.35)}
.toast.show{opacity:1;transform:translateX(-50%)}

/* ---------- usage / stats ---------- */
.usage{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.usage .u b{font-size:14px;font-weight:900}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:20px}
.stat{background:var(--card);backdrop-filter:blur(10px);border:1px solid #fff;border-radius:var(--r);padding:18px 20px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.stat:before{content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;border-radius:50%;background:radial-gradient(circle,#efe5ff,transparent 70%)}
.stat:nth-child(2n):before{background:radial-gradient(circle,#dff6e8,transparent 70%)}
.stat:nth-child(3n):before{background:radial-gradient(circle,#fff0c2,transparent 70%)}
.stat .muted{font-weight:800}
.stat .n{font-size:30px;font-weight:900;margin-top:4px;letter-spacing:-.5px}

/* ---------- tabs ---------- */
.tabs{display:inline-flex;gap:4px;margin-bottom:22px;padding:6px;background:rgba(255,255,255,.75);backdrop-filter:blur(10px);border:1px solid #fff;border-radius:var(--pill);box-shadow:var(--shadow);flex-wrap:wrap}
.tabs a{padding:9px 18px;text-decoration:none;color:var(--muted);font-weight:800;border-radius:var(--pill)}
.tabs a:hover{background:var(--purple-soft);color:var(--purple)}
.tabs a.on{background:linear-gradient(180deg,var(--purple2),var(--purple));color:#fff;box-shadow:0 6px 14px rgba(124,58,237,.3)}

/* ---------- pricing ---------- */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.plan{background:var(--card);backdrop-filter:blur(12px);border:2px solid #fff;border-radius:28px;padding:26px;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.plan.cur{border-color:var(--purple2)}
.plan.pop{border:3px solid var(--gold);position:relative;box-shadow:0 18px 40px rgba(245,183,10,.22)}
.plan .price{font-size:40px;font-weight:900;margin:10px 0 2px;letter-spacing:-1px}
.plan .price small{font-size:15px;font-weight:700;color:var(--muted);letter-spacing:0}
.plan ul{padding:0;list-style:none;margin:16px 0;flex:1}
.plan li{padding:5px 0;font-weight:600}
.plan li:before{content:"✓";display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:var(--green-soft);color:var(--green);font-weight:900;font-size:12px;margin-right:8px}
.seg{display:inline-flex;border:1px solid #fff;border-radius:var(--pill);padding:5px;background:rgba(255,255,255,.8);box-shadow:var(--shadow)}
.seg button{border:0;border-radius:var(--pill);padding:8px 18px;box-shadow:none;background:transparent}
.seg button.on{background:linear-gradient(180deg,var(--purple2),var(--purple));color:#fff}

details.card summary{list-style:none}
details.card summary::-webkit-details-marker{display:none}
details.card summary:before{content:"+";display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:var(--purple-soft);color:var(--purple);font-weight:900;margin-right:10px}
details.card[open] summary:before{content:"–";background:var(--purple);color:#fff}
header.app button.primary,header.app .btn.primary{background:linear-gradient(180deg,var(--green2),var(--green));color:#fff;border:2px solid #fff;box-shadow:0 6px 16px rgba(22,163,74,.3)}
.stats{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}