/* Leafbound design system — cream/beige/brown/muted-green */

/* ============================================================
   LEAFBOUND — design tokens
   Warm, paper-like palette: cream, beige, brown, muted green
   ============================================================ */
:root{
  --cream:#F6F1E7;        /* page background */
  --paper:#FDFBF6;        /* cards */
  --beige:#E9DEC9;        /* soft panels / borders */
  --beige-2:#DCCFB4;
  --ink:#2E241B;          /* main text */
  --brown:#6B4F3A;        /* secondary text / accents */
  --green:#5F7355;        /* primary action (muted green) */
  --green-dark:#46543F;
  --gold:#B08536;         /* highlights, ratings */
  --red:#A4543E;          /* danger / remove */
  --radius:14px;
  --shadow:0 2px 6px rgba(46,36,27,.07), 0 10px 24px rgba(46,36,27,.06);
  --font-display:"Fraunces", Georgia, serif;
  --font-body:"Karla", -apple-system, "Segoe UI", sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--cream);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.55}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:var(--font-body);cursor:pointer}
input,select,textarea{font-family:var(--font-body);font-size:15px;width:100%;padding:11px 13px;border:1.5px solid var(--beige-2);border-radius:10px;background:var(--paper);color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--green);outline-offset:1px;border-color:var(--green)}
label{font-size:13px;font-weight:700;color:var(--brown);display:block;margin-bottom:6px;letter-spacing:.02em}
h1,h2,h3{font-family:var(--font-display);font-weight:600;line-height:1.15}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.muted{color:var(--brown)}
.small{font-size:13px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(246,241,231,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--beige-2)}
.nav{display:flex;align-items:center;gap:18px;padding:14px 20px;max-width:1120px;margin:0 auto;flex-wrap:wrap}
.logo{font-family:var(--font-display);font-size:24px;font-weight:700;color:var(--green-dark);display:flex;align-items:center;gap:8px;cursor:pointer}
.logo .leaf{width:26px;height:26px;border-radius:4px 12px 4px 12px;background:linear-gradient(135deg,var(--green),var(--green-dark));display:inline-block}
.nav-links{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.nav-links button{background:none;border:none;padding:8px 12px;border-radius:8px;font-size:14.5px;font-weight:500;color:var(--ink)}
.nav-links button:hover{background:var(--beige)}
.nav-links button.active{background:var(--beige);font-weight:700;color:var(--green-dark)}
.nav-right{display:flex;gap:8px;align-items:center}
.icon-btn{position:relative;background:var(--paper);border:1.5px solid var(--beige-2);border-radius:10px;padding:8px 11px;font-size:16px}
.icon-btn:hover{border-color:var(--green)}
.badge{position:absolute;top:-6px;right:-6px;background:var(--red);color:#fff;font-size:11px;font-weight:700;border-radius:20px;padding:1px 6px;min-width:18px;text-align:center}

/* ---------- buttons ---------- */
.btn{display:inline-block;border:none;border-radius:10px;padding:12px 20px;font-size:15px;font-weight:700;transition:transform .08s, filter .15s;text-align:center}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dark)}
.btn-secondary{background:var(--paper);color:var(--green-dark);border:1.5px solid var(--green)}
.btn-secondary:hover{background:#eef1e9}
.btn-brown{background:var(--brown);color:#fff}
.btn-danger{background:none;border:1.5px solid var(--red);color:var(--red)}
.btn-sm{padding:8px 13px;font-size:13.5px}
.btn-block{width:100%}

/* ---------- hero: the bookshelf (signature element) ---------- */
.hero{padding:56px 0 40px;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.hero h1{font-size:clamp(34px,5vw,56px);color:var(--green-dark)}
.hero h1 em{font-style:italic;color:var(--gold)}
.hero p{margin:16px 0 24px;font-size:17px;color:var(--brown);max-width:46ch}
.shelf{display:flex;align-items:flex-end;gap:6px;height:270px;padding:0 14px;border-bottom:14px solid var(--brown);border-radius:0 0 6px 6px;justify-content:center}
.spine{width:44px;border-radius:4px 4px 0 0;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .18s;box-shadow:inset -5px 0 8px rgba(0,0,0,.18)}
.spine:hover{transform:translateY(-12px)}
.spine span{writing-mode:vertical-rl;transform:rotate(180deg);font-family:var(--font-display);font-size:12.5px;font-weight:600;color:#fff;letter-spacing:.04em;max-height:90%;overflow:hidden;white-space:nowrap}
.spine.lean{transform:rotate(7deg);transform-origin:bottom right}
.spine.lean:hover{transform:rotate(7deg) translateY(-8px)}

/* ---------- generated book covers ---------- */
.cover{aspect-ratio:2/3;border-radius:6px 12px 12px 6px;position:relative;display:flex;flex-direction:column;justify-content:space-between;padding:14px 12px 14px 18px;color:#fff;box-shadow:var(--shadow);overflow:hidden}
.cover::before{content:"";position:absolute;left:6px;top:0;bottom:0;width:2px;background:rgba(255,255,255,.35)} /* spine crease */
.cover .c-title{font-family:var(--font-display);font-weight:700;font-size:17px;line-height:1.2;text-shadow:0 1px 3px rgba(0,0,0,.35)}
.cover .c-author{font-size:12px;opacity:.92;letter-spacing:.06em;text-transform:uppercase}
.cover.lg .c-title{font-size:26px}

/* ---------- book cards ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:20px}
.card{background:var(--paper);border:1px solid var(--beige-2);border-radius:var(--radius);overflow:hidden;transition:transform .15s, box-shadow .15s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card .cover{border-radius:0;aspect-ratio:2/2.6;cursor:pointer}
.card-body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:5px;flex:1}
.card-body h3{font-size:16.5px;cursor:pointer}
.card-body h3:hover{color:var(--green-dark)}
.price{font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--green-dark)}
.card-foot{display:flex;gap:8px;margin-top:auto;padding-top:8px}
.chip{display:inline-block;font-size:11.5px;font-weight:700;padding:3px 9px;border-radius:20px;letter-spacing:.02em}
.chip-new{background:#E3EBDD;color:var(--green-dark)}
.chip-good{background:#F0E6CF;color:#8a6a1f}
.chip-fair{background:#F2DDD4;color:var(--red)}
.chip-type{background:var(--beige);color:var(--brown)}
.heart{background:none;border:none;font-size:18px;line-height:1}
.heart:hover{transform:scale(1.15)}

/* ---------- sections / panels ---------- */
.section{padding:40px 0}
.section-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:20px}
.section-head h2{font-size:26px;color:var(--green-dark)}
.panel{background:var(--paper);border:1px solid var(--beige-2);border-radius:var(--radius);padding:24px}
.field{margin-bottom:16px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.divider{height:1px;background:var(--beige-2);margin:18px 0}

/* ---------- terms agreement checkbox ---------- */
.agree-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink);margin-bottom:16px;cursor:pointer}
.agree-row input{margin-top:3px}
.agree-row a{color:var(--green-dark);font-weight:700}

/* ---------- legal pages (Terms / Privacy) ---------- */
.legal h2{color:var(--green-dark);margin-bottom:6px}
.legal h3{color:var(--green-dark);font-size:16px;margin:26px 0 8px}
.legal p{margin:10px 0;line-height:1.6;color:var(--ink)}
.legal ul{margin:8px 0;padding-left:22px}
.legal li{margin:5px 0;line-height:1.55;color:var(--ink)}

/* ---------- account type picker ---------- */
.acct-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.acct{border:2px solid var(--beige-2);border-radius:12px;padding:14px 12px;background:var(--paper);text-align:left;transition:.12s}
.acct .ic{font-size:22px}
.acct b{display:block;font-size:14px;margin:6px 0 2px}
.acct small{color:var(--brown);font-size:12px;line-height:1.3;display:block}
.acct.sel{border-color:var(--green);background:#EFF3EA}

/* ---------- filters ---------- */
.filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:10px;margin-bottom:22px}
.results-note{margin-bottom:14px;color:var(--brown);font-size:14px}

/* ---------- book detail ---------- */
.detail{display:grid;grid-template-columns:300px 1fr 300px;gap:30px;align-items:start}
.detail h1{font-size:32px;color:var(--green-dark)}
.buy-box{position:sticky;top:80px}
.meta-list{display:grid;gap:8px;margin:14px 0}
.meta-list div{display:flex;justify-content:space-between;font-size:14px;border-bottom:1px dashed var(--beige-2);padding-bottom:6px}
.seller-line{display:flex;align-items:center;gap:10px;margin-top:14px}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--brown);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}

/* ---------- dashboard ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:26px}
.stat{background:var(--paper);border:1px solid var(--beige-2);border-radius:12px;padding:16px}
.stat b{font-family:var(--font-display);font-size:26px;color:var(--green-dark);display:block}
.stat span{font-size:13px;color:var(--brown)}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;color:var(--brown);font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;padding:8px 10px;border-bottom:2px solid var(--beige-2)}
td{padding:10px;border-bottom:1px solid var(--beige)}
.earn-split{display:flex;gap:0;border-radius:10px;overflow:hidden;margin:10px 0;height:16px}
.earn-split .you{background:var(--green);flex:9}
.earn-split .fee{background:var(--gold);flex:1}

/* ---------- cart / checkout ---------- */
.cart-item{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--beige)}
.cart-item .cover{width:64px;padding:8px;border-radius:4px}
.cart-item .c-title{font-size:11px}.cart-item .c-author{display:none}
.summary-row{display:flex;justify-content:space-between;margin:8px 0;font-size:15px}
.summary-row.total{font-weight:700;font-size:18px;font-family:var(--font-display);border-top:2px solid var(--beige-2);padding-top:12px}
.layout-2{display:grid;grid-template-columns:1.6fr 1fr;gap:26px;align-items:start}

/* ---------- messages ---------- */
.msg-layout{display:grid;grid-template-columns:280px 1fr;gap:0;background:var(--paper);border:1px solid var(--beige-2);border-radius:var(--radius);overflow:hidden;min-height:460px}
.thread{padding:14px;border-bottom:1px solid var(--beige);cursor:pointer}
.thread:hover,.thread.active{background:var(--beige)}
.thread b{display:block;font-size:14.5px}
.thread small{color:var(--brown)}
.chat{display:flex;flex-direction:column;border-left:1px solid var(--beige-2)}
.chat-msgs{flex:1;padding:18px;display:flex;flex-direction:column;gap:10px;overflow-y:auto;max-height:420px}
.bubble{max-width:70%;padding:10px 14px;border-radius:14px;font-size:14.5px}
.bubble.me{align-self:flex-end;background:var(--green);color:#fff;border-bottom-right-radius:4px}
.bubble.them{align-self:flex-start;background:var(--beige);border-bottom-left-radius:4px}
.bubble.sys{align-self:center;background:#F0E6CF;color:#7a5c14;font-size:13px}
.chat-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--beige-2)}

/* ---------- modal / toast ---------- */
.modal-bg{position:fixed;inset:0;background:rgba(46,36,27,.45);display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal{background:var(--paper);border-radius:16px;padding:26px;max-width:440px;width:100%}
#toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--ink);color:var(--cream);padding:12px 22px;border-radius:30px;font-size:14.5px;z-index:200;opacity:0;transition:opacity .25s;pointer-events:none}
#toast.show{opacity:1}

/* ---------- how it works ---------- */
.how{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.how .panel{text-align:left}
.how .ic{font-size:26px}
.how h3{margin:10px 0 6px;font-size:18px}

footer{border-top:1px solid var(--beige-2);margin-top:50px;padding:28px 0;color:var(--brown);font-size:14px;text-align:center}

/* ---------- empty state ---------- */
.empty{text-align:center;padding:60px 20px;color:var(--brown)}
.empty .big{font-size:40px}

/* ---------- responsive ---------- */
/* ---------- mobile bottom tab bar (Instagram-style) ---------- */
.tabbar{display:none}

@media (max-width:900px){
  body{padding-bottom:74px} /* keep content clear of the fixed tab bar */
  .nav{flex-wrap:nowrap;justify-content:space-between;gap:10px;padding:12px 14px}
  .nav-links{display:none}  /* top links replaced by the bottom tab bar */
  .logo{font-size:20px}
  .nav-right{gap:6px}
  .tabbar{position:fixed;bottom:0;left:0;right:0;z-index:60;display:grid;grid-template-columns:repeat(5,1fr);background:var(--paper);border-top:1px solid var(--beige-2);padding:6px 4px calc(6px + env(safe-area-inset-bottom));box-shadow:0 -4px 14px rgba(46,36,27,.08)}
  .tabbar button{background:none;border:none;font-size:10.5px;font-weight:700;color:var(--brown);display:flex;flex-direction:column;align-items:center;gap:2px;padding:5px 2px;border-radius:10px}
  .tabbar button .t-ic{font-size:19px;line-height:1}
  .tabbar button.active{color:var(--green-dark);background:var(--beige)}
  .hero{grid-template-columns:1fr}
  .shelf{height:210px}
  .detail{grid-template-columns:1fr}
  .buy-box{position:static}
  .layout-2{grid-template-columns:1fr}
  .filters{grid-template-columns:1fr 1fr}
  .msg-layout{grid-template-columns:1fr}
  .chat{border-left:none;border-top:1px solid var(--beige-2)}
  .row2{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---------- SVG icon refinements ---------- */
.icon-btn{display:inline-flex;align-items:center;justify-content:center;color:var(--green-dark);line-height:0}
.heart{color:var(--brown);line-height:0;display:inline-flex;align-items:center;justify-content:center}
.heart.on{color:var(--green)}
.t-ic{line-height:0;display:block}
.how .ic,.acct .ic,.empty .big{color:var(--green);line-height:0}
.btn{white-space:nowrap}
.spine{max-height:calc(100% - 8px)}
/* Accessibility: skip link appears on keyboard focus */
.skip{position:absolute;left:-9999px;top:0;background:var(--green-dark);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:300;text-decoration:none;font-weight:700}
.skip:focus{left:0}
@media (max-width:900px){
  .nav-right .btn{padding:9px 12px;font-size:12.5px}
}