/* ---- /buy page ---- */
.buy-hero{background:linear-gradient(180deg,#eaf3f6 0%,var(--cream) 78%);text-align:center;padding:56px 0 40px}
.buy-cover{width:180px;height:auto;border-radius:16px;box-shadow:var(--shadow);margin:0 auto 22px;transform:rotate(-1.5deg);border:4px solid #fff}
.buy-hero h1{max-width:16ch;margin:.1em auto .35em}
.buy-hero .lede{font-size:1.15rem;color:var(--ink-soft);max-width:44ch;margin:0 auto}
.buy-flags{margin-top:22px;font-size:1.5rem;letter-spacing:.16em}

.buy-picker{background:var(--cream);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:30px 26px 34px;max-width:900px;margin:-30px auto 0;position:relative}
.buy-picker h2{text-align:center;font-size:1.7rem;margin:0 0 .1em}
.buy-picker .sub{text-align:center;color:var(--ink-soft);margin:0 0 22px}
.buy-controls{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end;justify-content:center}
.buy-field{flex:1 1 250px;min-width:230px}
.buy-field label{display:block;font-weight:800;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:8px}
.buy-field select{width:100%;font-family:var(--sans);font-weight:700;font-size:1rem;color:var(--ink);padding:14px 16px;border-radius:14px;border:2px solid var(--line);background:#fff;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23C4841A' stroke-width='3'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}
.buy-field select:focus{outline:none;border-color:var(--gold)}
.buy-seg{display:inline-flex;background:var(--cream-2);border-radius:999px;padding:5px;gap:3px;flex-wrap:wrap;justify-content:center}
.buy-seg button{font-family:var(--sans);font-weight:800;font-size:.9rem;border:0;background:transparent;color:var(--ink-soft);padding:10px 16px;border-radius:999px;cursor:pointer;transition:.15s}
.buy-seg button.on{background:#fff;color:var(--coral);box-shadow:var(--shadow-sm)}
.buy-hint{text-align:center;color:var(--ink-soft);font-size:.95rem;margin:18px 0 0;min-height:1.2em}
.buy-hint b{color:var(--gold-deep)}
.buy-results{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin-top:22px}
.buy-store{display:flex;flex-direction:column;gap:5px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px 17px 16px;box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .2s}
.buy-store:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.buy-store .top{display:flex;align-items:center;gap:9px}
.buy-store .fl{font-size:1.35rem;line-height:1}
.buy-store .nm{font-family:var(--serif);font-weight:600;font-size:1.12rem;color:var(--ink)}
.buy-store .meta{color:var(--ink-soft);font-size:.85rem;flex:1}
.buy-store .tag{align-self:flex-start;font-size:.66rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase;padding:3px 9px;border-radius:999px;margin-top:2px}
.tag-pb{background:#fbe6d9;color:var(--coral)}
.tag-eb{background:#dcebe6;color:var(--pond)}
.tag-hc{background:#f1e6cf;color:var(--gold-deep)}
.tag-fe{background:#eee4cd;color:var(--gold-deep)}
.buy-store .go{margin-top:10px;text-align:center;font-weight:800;text-decoration:none;color:#fff;background:var(--coral);padding:11px;border-radius:12px;transition:background .2s}
.buy-store .go:hover{background:var(--gold-deep);color:#fff}
.buy-store.featured .go{background:var(--gold-deep)}
.buy-store.featured .go:hover{background:var(--coral)}
.buy-empty{grid-column:1/-1;text-align:center;color:var(--ink-soft);padding:8px}
.buy-notify{margin-top:22px;background:linear-gradient(135deg,var(--pond),var(--teal));color:#fff;border-radius:18px;padding:26px 24px;text-align:center;display:none}
.buy-notify.show{display:block}
.buy-notify h3{color:#fff;margin:0 0 .2em}
.buy-notify p{color:#E4EFE7;max-width:52ch;margin:0 auto 18px}
.buy-notify .btn-primary{background:var(--gold);color:var(--ink)}
.buy-notify .btn-primary:hover{background:#fff;color:var(--ink)}
.buy-extra{max-width:900px;margin:34px auto 0;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.buy-card{background:var(--cream);border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:var(--shadow-sm)}
.buy-card h3{margin:.1em 0 .3em}
.buy-card p{margin:0 0 16px;color:var(--ink-soft);font-size:.98rem}
.buy-isbn{max-width:900px;margin:20px auto 0;text-align:center;background:var(--cream-2);border:1px solid var(--line);border-radius:16px;padding:20px;color:var(--ink-soft)}
.buy-isbn b{color:var(--ink)}
.buy-isbn code{background:#fff;border:1px solid var(--line);padding:2px 9px;border-radius:6px;color:var(--ink)}
@media(max-width:760px){.buy-extra{grid-template-columns:1fr}.buy-picker{margin-top:0}}