:root{
  --paper:#faf7f2; --paper2:#f3eee5; --ink:#221f1b; --muted:#8c857a;
  --card:#fffdf9; --line:#ece6db; --accent:#1f1d1a; --amber:#e0903e;
  --amber-soft:#fbf0df; --good:#4a8a5e; --bad:#c2553f;
  --serif:'Fraunces',Georgia,serif; --sans:'Inter',-apple-system,Segoe UI,Roboto,sans-serif;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 8px 30px rgba(60,50,30,.06);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  -webkit-font-smoothing:antialiased;line-height:1.5}
.hidden{display:none !important}
.muted{color:var(--muted)} .small{font-size:13px}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.1}
em{font-style:italic;color:var(--amber)}

/* buttons */
button{font-family:var(--sans);cursor:pointer;border:none;font-size:15px}
.btn-primary{background:var(--accent);color:#fff;border-radius:100px;padding:12px 22px;font-weight:600;transition:transform .12s,opacity .12s}
.btn-primary:hover{transform:translateY(-1px);opacity:.92}
.btn-primary.big{padding:15px 30px;font-size:16px}
.btn-primary.wide,.btn-ghost.wide{width:100%;padding:13px}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);border-radius:100px;padding:11px 20px;font-weight:600}
.btn-ghost:hover{background:var(--paper2)}
.btn-link{background:none;color:var(--muted);font-weight:600;padding:6px}
.btn-link:hover{color:var(--ink)}
.btn-link.inline{display:inline;padding:0;color:var(--amber)}

/* ===== NAV / LANDING ===== */
.nav{display:flex;align-items:center;justify-content:space-between;padding:20px max(24px,5vw);
  position:sticky;top:0;background:rgba(250,247,242,.85);backdrop-filter:blur(8px);z-index:30}
.logo{font-weight:700;font-size:19px}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--muted);font-weight:500}.nav-links a:hover{color:var(--ink)}
@media(max-width:720px){.nav-links a{display:none}}

.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
  padding:60px max(24px,6vw) 80px;max-width:1180px;margin:0 auto}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--amber);
  background:var(--amber-soft);padding:6px 14px;border-radius:100px;margin-bottom:22px}
.hero h1{font-size:clamp(40px,6vw,68px);margin:0 0 20px}
.lede{font-size:18px;color:#5c564d;max-width:460px;margin:0 0 30px}
.hero-cta{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.cta-note{font-size:13px;color:var(--muted)}
@media(max-width:820px){.hero{grid-template-columns:1fr;text-align:center}
  .hero-cta{align-items:center}.lede{margin-inline:auto}}

/* hero card art */
.hero-art{position:relative;height:330px}
.card-demo{position:absolute;inset:0;background:var(--card);border:1px solid var(--line);
  border-radius:22px;padding:30px;box-shadow:var(--shadow)}
.card-demo.back{transform:rotate(-5deg) translateY(14px) scale(.96);z-index:-1;opacity:.7}
.card-demo.back2{transform:rotate(4deg) translateY(26px) scale(.92);z-index:-2;opacity:.45}
.cd-quote{font-family:var(--serif);font-size:22px;line-height:1.5}
.cd-meta{color:var(--muted);font-size:13px;margin-top:18px}
.cd-actions{display:flex;justify-content:space-between;align-items:center;margin-top:22px}
.cd-icons{color:#cbb8a0;letter-spacing:2px}
.chip{font-size:11px;color:#9a6b2f;background:var(--amber-soft);padding:3px 11px;border-radius:100px}

.strip{background:var(--accent);color:#f3ede2;padding:46px max(24px,6vw);text-align:center}
.strip p{max-width:760px;margin:0 auto;font-size:20px;font-family:var(--serif)}
.strip b{color:#fff}

.how,.features,.pricing{max-width:1080px;margin:0 auto;padding:80px max(24px,6vw)}
.how h2,.features h2,.pricing h2{font-size:clamp(28px,4vw,40px);text-align:center;margin:0 0 50px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.step-n{width:34px;height:34px;border-radius:100px;background:var(--amber-soft);color:#9a6b2f;
  display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:16px}
.step h3{font-size:20px;margin:0 0 8px}.step p{color:#5c564d;margin:0;font-size:15px}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat{padding:24px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line)}
.feat-ic{font-size:26px;margin-bottom:12px}.feat h3{font-size:18px;margin:0 0 6px}
.feat p{color:#5c564d;font-size:14px;margin:0}
@media(max-width:760px){.steps,.feat-grid{grid-template-columns:1fr}}

.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:760px;margin:0 auto}
.plan{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:34px;position:relative}
.plan.featured{border-color:var(--amber);box-shadow:var(--shadow)}
.plan-badge{position:absolute;top:-12px;right:24px;background:var(--amber);color:#fff;font-size:11px;
  font-weight:700;padding:4px 12px;border-radius:100px}
.plan-name{font-weight:700;color:var(--amber)}
.plan-price{font-family:var(--serif);font-size:44px;margin:6px 0 18px}
.plan-price span{font-size:15px;color:var(--muted);font-family:var(--sans)}
.plan ul{list-style:none;padding:0;margin:0 0 24px}
.plan li{padding:7px 0 7px 26px;position:relative;color:#5c564d;font-size:15px;border-bottom:1px solid var(--line)}
.plan li:before{content:"✓";position:absolute;left:0;color:var(--good);font-weight:700}
@media(max-width:680px){.plans{grid-template-columns:1fr}}

.footer{display:flex;justify-content:space-between;padding:34px max(24px,6vw);border-top:1px solid var(--line);font-weight:600}

/* ===== AUTH MODAL ===== */
.modal{position:fixed;inset:0;background:rgba(34,31,27,.45);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;z-index:50;padding:18px}
.modal-card{background:var(--card);border-radius:24px;padding:38px 34px;width:100%;max-width:400px;
  position:relative;box-shadow:0 20px 60px rgba(0,0,0,.25);text-align:center}
.modal-x{position:absolute;top:16px;right:18px;background:none;color:var(--muted);font-size:18px}
.brand-lg{font-size:24px;font-weight:700}
.modal-card .muted{margin:4px 0 24px}
.btn-google{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;
  background:#fff;border:1px solid var(--line);border-radius:100px;padding:12px;font-weight:600;color:var(--ink)}
.btn-google:hover{background:var(--paper2)}
.divider{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px;margin:18px 0}
.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--line)}
#auth-form{display:flex;flex-direction:column;gap:10px}
input,select,textarea{font-family:var(--sans);font-size:15px;padding:12px 14px;border:1px solid var(--line);
  border-radius:12px;background:var(--card);color:var(--ink);outline:none;width:100%}
input:focus,textarea:focus,select:focus{border-color:var(--amber)}
.auth-msg{font-size:13px;min-height:18px;margin:10px 0 0;color:var(--muted)}
.auth-msg.err{color:var(--bad)}.auth-msg.ok{color:var(--good)}
.switch{font-size:14px;color:var(--muted);margin-top:14px}

/* ===== APP ===== */
.appbar{display:flex;align-items:center;gap:20px;padding:14px max(18px,4vw);background:var(--card);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.logo.small{font-size:17px}
.apptabs{display:flex;gap:4px;margin-left:6px}
.atab{background:none;color:var(--muted);padding:8px 16px;border-radius:100px;font-weight:600}
.atab.active{background:var(--paper2);color:var(--ink)}
.appmenu{margin-left:auto;display:flex;align-items:center;gap:14px;position:relative}
.streak-pill{font-size:14px;color:#9a6b2f;background:var(--amber-soft);padding:5px 12px;border-radius:100px}
.avatar{width:36px;height:36px;border-radius:100px;background:var(--accent);color:#fff;font-weight:700}
.menu{position:absolute;top:46px;right:0;background:var(--card);border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow);padding:6px;min-width:180px;display:flex;flex-direction:column}
.menu-email{font-size:12px;color:var(--muted);padding:8px 12px;border-bottom:1px solid var(--line)}
.menu button{background:none;text-align:left;padding:10px 12px;border-radius:8px;color:var(--ink);font-weight:500}
.menu button:hover{background:var(--paper2)}
.app-main{max-width:680px;margin:0 auto;padding:36px max(18px,4vw) 80px}
.view h1{font-size:30px;margin:0 0 4px}

/* daily review card-stack */
.today-head{text-align:center;margin-bottom:30px}
.today-head h1{font-size:32px}
.review-stage{position:relative;min-height:340px;display:flex;align-items:center;justify-content:center}
.r-card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:40px 36px;
  width:100%;box-shadow:var(--shadow);text-align:left;animation:rise .35s ease}
@keyframes rise{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.r-quote{font-family:var(--serif);font-size:18.5px;line-height:1.6;color:#1c1a17}
.r-attr{color:var(--muted);font-size:14px;margin-top:20px}.r-attr b{color:#46413a}
.r-recall{font-size:12.5px;color:#a99c86;margin-top:8px;font-style:italic}
.r-foot{display:flex;align-items:center;justify-content:space-between;margin-top:26px;gap:12px}
.r-chip{font-size:11px;color:#9a6b2f;background:var(--amber-soft);padding:4px 12px;border-radius:100px}
.r-actions{display:flex;gap:8px}
.ibtn{width:46px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--card);
  font-size:18px;color:#b6a994;display:flex;align-items:center;justify-content:center;transition:.12s}
.ibtn:hover{background:var(--paper2);transform:translateY(-1px)}
.ibtn.fav.on{color:var(--amber);border-color:#f0d6ad;background:#fff8ee}
.ibtn.nav{color:var(--ink)}
.dots{display:flex;gap:8px;justify-content:center;margin-top:26px}
.dot{width:8px;height:8px;border-radius:100px;background:var(--line)}
.dot.done{background:var(--amber)}.dot.cur{background:var(--accent);transform:scale(1.3)}
.finish{text-align:center;padding:50px 20px}
.finish .big-emoji{font-size:46px}
.finish h2{font-size:28px;margin:14px 0 6px}
.finish p{color:var(--muted)}

/* library + cards */
.lib-search{display:flex;gap:10px;margin:18px 0}
.lib-search input{flex:1}.lib-search select{width:auto}
.cards{display:flex;flex-direction:column;gap:14px;margin-top:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 24px;transition:.2s}
.card.removing{opacity:0;transform:translateX(16px)}
.card .q{font-family:var(--serif);font-size:17px;line-height:1.55}
.card .m{display:flex;justify-content:space-between;align-items:center;margin-top:14px;gap:10px}
.card .a{font-size:13px;color:var(--muted)}.card .a b{color:#46413a}
.card .acts{display:flex;gap:6px}
.card .ibtn{width:38px;height:34px;font-size:15px}

/* books */
.books-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}
.book-card{display:flex;flex-direction:column;align-items:flex-start;gap:3px;text-align:left;
  background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;cursor:pointer;transition:.14s}
.book-card:hover{border-color:var(--amber);transform:translateY(-2px);box-shadow:var(--shadow)}
.book-card b{font-family:var(--serif);font-size:16px;color:var(--ink);line-height:1.3}
.book-card span{font-size:12px;color:var(--muted)}
#lib-meta a{color:var(--amber);font-weight:600}
@media(max-width:560px){.books-grid{grid-template-columns:1fr}}

/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:24px 0}
.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;text-align:center}
.stat .n{font-family:var(--serif);font-size:34px;color:var(--ink)}
.stat .l{font-size:13px;color:var(--muted);margin-top:4px}
.stat-books h3{font-size:18px;margin:24px 0 12px}
.bookrow{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}
.bookrow .c{color:var(--muted)}
@media(max-width:560px){.stat-grid{grid-template-columns:1fr 1fr}}

/* settings */
.setting-block{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;margin-top:18px}
.setting-block h3{font-size:18px;margin:0 0 16px}
.setting-block .row{display:flex;justify-content:space-between;align-items:center;padding:8px 0}
.setting-block textarea{margin-bottom:10px}
.add-row{display:flex;gap:8px}.add-row input{flex:1}
.import-row{display:flex;align-items:center;gap:12px;margin-top:16px}
.file-label{cursor:pointer;display:inline-block}

/* brand logo lockup */
.logo,.footlogo{display:inline-flex;align-items:center;gap:7px;font-family:var(--serif);
  font-weight:600;color:#173a4f}
.logo{font-size:22px}.logo.small{font-size:19px}
.brand-lg{display:inline-flex;align-items:center;gap:8px;font-family:var(--serif);color:#173a4f;font-weight:600}
.logo-mark{height:28px;width:28px;display:inline-block}
.logo.small .logo-mark{height:24px;width:24px}

/* add button + onboarding */
.addbtn{background:var(--amber-soft);color:#9a6b2f;border-radius:100px;padding:8px 16px;font-weight:600;font-size:14px}
.addbtn:hover{background:#f6e6cd}
.onboard{text-align:center;padding:24px 12px}
.onboard h2{font-size:26px;margin:14px 0 6px}
.onboard-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px;max-width:480px;margin-inline:auto}
.ob-card{display:flex;flex-direction:column;align-items:center;gap:5px;background:var(--card);
  border:1px solid var(--line);border-radius:16px;padding:26px 18px;cursor:pointer;transition:.15s}
.ob-card:hover{border-color:var(--amber);transform:translateY(-2px);box-shadow:var(--shadow)}
.ob-ic{font-size:28px}.ob-card b{font-size:15px;color:var(--ink)}.ob-card small{font-size:12px;color:var(--muted)}
@media(max-width:520px){.onboard-cards{grid-template-columns:1fr}}

/* toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;
  padding:11px 20px;border-radius:100px;font-size:14px;font-weight:500;box-shadow:0 6px 20px rgba(0,0,0,.2);z-index:60}