/* danielbrooksbooks.com — shared look: soft yellow, white cards, deep green actions, blue-black headings */
:root{
  --bg:#FFF8E1; --bg2:#FCEEC4; --card:#FFFFFF; --line:#E8DDBF; --ink:#1B2430; --head:#14213D;
  --muted:#556070; --green:#166534; --green-dark:#0B3D1F; --icon:#15803D; --mint:#ECFDF3; --icon-tint:#E3F2E7;
  --display:Fraunces,Georgia,serif; --ui:Manrope,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--ui);font-size:17px;line-height:1.6}
a{color:var(--green)}a:hover{color:var(--green-dark)}
img{max-width:100%}
.container{max-width:1160px;margin:0 auto;padding:0 24px}

/* header */
.site-header{background:#FFFCF0;border-bottom:1px solid #EFE0B4}
.site-header .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand .mark{width:34px;height:34px;border-radius:10px;background:var(--icon);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:18px;font-weight:600}
.brand .name{font-family:var(--display);font-size:22px;font-weight:600}
.mainnav{display:flex;flex-wrap:wrap;gap:2px}
.mainnav a{font-size:15px;font-weight:600;text-decoration:none;color:var(--green);padding:10px 14px;border-radius:999px}
.mainnav a[aria-current="page"]{font-weight:700;background:var(--mint)}
.btn{font-family:var(--ui);font-size:16px;font-weight:700;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:999px;border:2px solid var(--green);background:var(--green);color:#fff;cursor:pointer}
.btn:hover{background:var(--green-dark);border-color:var(--green-dark);color:#fff}
.btn.secondary{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.secondary:hover{border-color:var(--green);color:var(--green)}
.btn.small{min-height:44px;font-size:15px;padding:0 20px}
.btnrow{display:flex;flex-wrap:wrap;gap:12px}

/* type */
h1,h2,h3{font-family:var(--display);font-weight:600;color:var(--head);line-height:1.12;margin:0}
h1{font-size:clamp(36px,6vw,62px)}
h2{font-size:clamp(28px,4vw,42px)}
h3{font-size:22px}
p{margin:0}
.lead{font-size:19px;line-height:1.7;color:var(--muted);max-width:620px}
.pill{font-size:13px;font-weight:700;color:var(--green);background:var(--mint);padding:6px 12px;border-radius:999px;display:inline-block;align-self:flex-start;width:fit-content}
.muted{color:var(--muted)}
.small{font-size:14px}
.crumbs{font-size:14px;display:flex;flex-wrap:wrap;gap:8px;padding-top:28px}
.crumbs a{font-weight:600;text-decoration:none}
.crumbs span[aria-hidden]{color:var(--muted)}

/* sections & cards */
.hero{background:var(--bg2)}
.hero .container{display:flex;flex-wrap:wrap;align-items:center;gap:56px;padding-top:64px;padding-bottom:64px}
.hero .text{flex:999 1 460px;min-width:0;display:flex;flex-direction:column;gap:22px}
.hero .art{flex:1 1 300px;display:flex;justify-content:center}
.cover-card{background:#fff;border-radius:28px;padding:26px;box-shadow:0 24px 60px rgba(27,36,48,.10)}
.cover-card img{display:block;width:300px;border-radius:6px}
.section{padding-top:80px;display:flex;flex-direction:column;gap:28px}
.section-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px}
.section-head > div{display:flex;flex-direction:column;gap:10px}
.grid{display:grid;gap:18px}
.grid.cols-4{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.grid.cols-3{grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.grid.cols-2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;display:flex;flex-direction:column;gap:10px}
a.card{text-decoration:none;color:var(--ink)}
a.card:hover{border-color:var(--green);box-shadow:0 10px 26px rgba(27,36,48,.08)}
.card .title{font-family:var(--display);font-size:22px;font-weight:600;color:var(--head);line-height:1.2}
.card .more{font-size:15px;font-weight:700;color:var(--green);margin-top:auto}
.stepnum{width:42px;height:42px;border-radius:12px;background:var(--icon-tint);color:var(--icon);display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:20px;font-weight:600}
.placeholder{border:2px dashed var(--line);border-radius:18px;padding:24px;min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;color:var(--muted)}
.panel-mint{background:var(--mint);border-radius:28px;padding:40px;display:flex;flex-wrap:wrap;gap:40px;align-items:center}
.panel-mint .text{flex:1 1 340px;display:flex;flex-direction:column;gap:16px}
.panel-mint .shots{flex:2 1 460px;min-width:0;display:flex;align-items:flex-end;gap:18px}
.panel-mint .shots .tablet{flex:1 1 0;min-width:0;width:100%;border-radius:14px;box-shadow:0 16px 40px rgba(27,36,48,.12)}
.panel-mint .shots .phone{width:130px;flex:0 0 130px;border-radius:20px;border:5px solid var(--ink)}
.signup{background:#fff;border:1px solid var(--line);border-radius:28px;padding:40px;display:flex;flex-wrap:wrap;align-items:flex-end;gap:20px 32px}
.signup .text{flex:1 1 340px;display:flex;flex-direction:column;gap:8px}
.signup .fields{flex:1 1 340px;display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.signup label{flex:1 1 220px;display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:700}
.signup input{min-height:52px;border:1px solid #C9D0D8;border-radius:999px;padding:0 18px;font:inherit;font-size:16px;background:#fff}
.note{font-size:14px;color:var(--muted)}

/* book page */
.book{display:flex;flex-wrap:wrap;gap:48px;align-items:flex-start;padding-top:24px}
.book .art{flex:1 1 300px;display:flex;justify-content:center}
.book .art img{width:360px;border-radius:6px;box-shadow:0 20px 40px rgba(27,36,48,.18)}
.book .text{flex:999 1 480px;min-width:0;display:flex;flex-direction:column;gap:18px}
.ticks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;font-size:18px}
.ticks li{display:flex;gap:10px;align-items:flex-start}
.ticks svg{flex:0 0 22px;margin-top:3px}
dl.details{margin:0;display:grid;grid-template-columns:150px 1fr;column-gap:16px}
dl.details dt{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:10px 0;border-bottom:1px solid var(--line)}
dl.details dd{margin:0;padding:10px 0;border-bottom:1px solid var(--line)}

/* play: case list, ranks, ledger */
.rankcard{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--ink)}
.rankcard .rank{font-family:var(--display);font-size:24px;font-weight:600;color:var(--head)}
.bar{height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.bar > span{display:block;height:100%;border-radius:99px;background:var(--green)}
.tierbar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;background:var(--bg2);padding:6px;border-radius:999px}
.tierbar button{font:inherit;border:1px solid transparent;background:#fff;color:var(--ink);border-radius:999px;min-height:52px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1.2}
.tierbar button b{font-size:16px}
.tierbar button span{font-size:12px;opacity:.85}
.tierbar button[aria-selected="true"]{background:var(--green);color:#fff}
.casegrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.casecard{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;display:flex;flex-direction:column;gap:8px;min-height:160px;text-decoration:none;color:var(--ink)}
.casecard:hover{border-color:var(--green)}
.casecard .top{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--muted)}
.casecard .t{font-family:var(--display);font-size:21px;font-weight:600;color:var(--head);line-height:1.2}
.casecard .s{font-size:15px;color:var(--muted);line-height:1.5}
.badge{font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--bg);color:var(--muted)}
.badge.solved{background:#E4F3E7;color:#1F6B33}
.badge.progress{background:#FFF2D6;color:#7A5300}
.badge.free{background:var(--mint);color:var(--green)}
.ranks{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.ranks li{display:flex;gap:14px;align-items:center;padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:#fff}
.ranks li.current{border-color:var(--green);background:var(--mint)}
.ranks .n{width:36px;height:36px;flex:0 0 36px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--icon-tint);color:var(--icon);font-weight:700}
.ranks li.current .n{background:var(--green);color:#fff}
.ledger{display:grid;grid-template-columns:repeat(auto-fill,minmax(56px,1fr));gap:8px}
.ledger a{min-height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:700;text-decoration:none;background:#fff;border:1px solid var(--line);color:var(--muted)}
.ledger a.solved{background:var(--green);border-color:var(--green);color:#fff}
.ledger a.progress{background:#FFF2D6;border-color:#D9BE7A;color:#6B4E0E}
.cert{background:#fff;border:6px double #8A6514;border-radius:10px;padding:32px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.cert.locked{opacity:.6}

/* access pages */
.gate{max-width:640px;margin:40px auto 0;background:#fff;border:1px solid var(--line);border-radius:28px;padding:36px;display:flex;flex-direction:column;gap:16px;align-items:center;text-align:center;box-shadow:0 14px 34px rgba(27,36,48,.08)}
.gate .q{width:100%;background:var(--bg);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px;text-align:left}
.gate .q p{font-size:19px;font-weight:600;line-height:1.45}
.gate label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:700}
.gate input[type=text]{min-height:52px;border:1px solid #C9D0D8;border-radius:12px;padding:0 14px;font:inherit;font-size:17px}
.gate .err{font-size:14px;color:#8C1D18;background:#FBE9E6;border-radius:8px;padding:8px 10px}
.gate .icon{width:64px;height:64px;border-radius:50%;background:var(--head);display:flex;align-items:center;justify-content:center}

/* footer */
.site-footer{margin-top:96px;background:var(--bg2);border-top:1px solid var(--line)}
.site-footer .container{padding-top:40px;padding-bottom:40px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;color:var(--muted);font-size:15px}
.site-footer .name{font-family:var(--display);font-size:20px;font-weight:600;color:var(--ink)}
.site-footer nav{display:flex;flex-wrap:wrap;gap:6px 18px}
.site-footer nav a{text-decoration:none;font-weight:600}
@media (max-width:600px){ .container{padding:0 16px} .panel-mint,.signup,.gate{padding:26px} dl.details{grid-template-columns:120px 1fr} }