/* ===========================================================
   Speak & Shine — BRAM branding
   Vermilion Orange #FF5529 · Raleway
   =========================================================== */
:root{
  --orange:#FF5529;
  --orange-dark:#E6431B;
  --orange-soft:#FFE9E2;
  --ink:#1E1B18;
  --slate:#5B5650;
  --line:#EDE7E1;
  --bg:#FBF8F5;
  --card:#FFFFFF;
  --white:#FFFFFF;
  --radius:16px;
  --shadow:0 6px 22px rgba(30,27,24,.08);
  --shadow-lg:0 14px 40px rgba(30,27,24,.14);
  --maxw:1120px;
  --font:'Raleway',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ---------- Header ---------- */
.site-header{
  background:var(--white);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:40;
}
.site-header .bar{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;
}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em}
.brand .logo{
  width:38px;height:38px;border-radius:11px;
  background:var(--orange);color:#fff;
  display:grid;place-items:center;font-weight:900;font-size:19px;
  box-shadow:0 4px 12px rgba(255,85,41,.35);
}
.brand .name{font-size:19px}
.brand .name span{color:var(--orange)}
.brand small{display:block;font-size:11px;color:var(--slate);font-weight:600;letter-spacing:.04em}

.nav-back{
  font-weight:700;font-size:14px;color:var(--slate);
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:10px;transition:.15s;
}
.nav-back:hover{background:var(--orange-soft);color:var(--orange-dark)}

/* ---------- Hero ---------- */
.hero{
  background:linear-gradient(135deg,#fff 0%,var(--orange-soft) 100%);
  border-bottom:1px solid var(--line);
  padding:54px 0 46px;
}
.hero h1{font-size:clamp(28px,5vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.1}
.hero h1 span{color:var(--orange)}
.hero p{color:var(--slate);margin-top:12px;font-size:17px;max-width:620px}

/* ---------- Section title ---------- */
.section{padding:40px 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:22px;flex-wrap:wrap;gap:8px}
.section-head h2{font-size:24px;font-weight:800;letter-spacing:-.01em}
.section-head .muted{color:var(--slate);font-size:14px;font-weight:600}

/* ---------- Grid & cards ---------- */
.grid{display:grid;gap:20px}
.grid.books{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.grid.contents{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}

.card{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .18s ease,box-shadow .18s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}

.card .thumb{
  aspect-ratio:16/10;background:var(--orange-soft);
  display:grid;place-items:center;overflow:hidden;position:relative;
}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .thumb .placeholder{font-size:40px;opacity:.4}

.book-cover .thumb{aspect-ratio:3/4}

.card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:6px;flex:1}
.card h3{font-size:17px;font-weight:800;letter-spacing:-.01em}
.card .desc{font-size:13.5px;color:var(--slate);line-height:1.45}
.card .meta{margin-top:auto;padding-top:12px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* badges */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-size:12px;font-weight:800;letter-spacing:.02em;
  padding:5px 10px;border-radius:999px;
}
.badge.code{background:var(--orange);color:#fff}
.badge.page{background:var(--orange-soft);color:var(--orange-dark)}
.badge.level{background:#eef1f0;color:var(--slate)}
.badge.type-listening{background:#E8F1FF;color:#1D4ED8}
.badge.type-interactive{background:#EAF7EE;color:#127a3e}

/* ---------- Choose type (book page) ---------- */
.choose{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:8px}
.choose a{
  border-radius:var(--radius);padding:34px 28px;color:#fff;
  box-shadow:var(--shadow);transition:transform .18s,box-shadow .18s;
  display:flex;flex-direction:column;gap:10px;min-height:180px;justify-content:flex-end;
}
.choose a:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.choose .icon{font-size:38px}
.choose h3{font-size:22px;font-weight:800}
.choose p{font-size:14px;opacity:.92;font-weight:600}
.choose .count{font-size:13px;font-weight:700;background:rgba(255,255,255,.22);padding:4px 10px;border-radius:999px;align-self:flex-start}
.choose .listening{background:linear-gradient(135deg,#2563EB,#1E40AF)}
.choose .interactive{background:linear-gradient(135deg,#FF5529,#E6431B)}

/* ---------- Search bar ---------- */
.searchbar{display:flex;gap:10px;margin-bottom:26px;flex-wrap:wrap}
.searchbar input{
  flex:1;min-width:200px;font-family:var(--font);font-size:15px;
  padding:13px 16px;border:1.5px solid var(--line);border-radius:12px;background:#fff;
  transition:border .15s;
}
.searchbar input:focus{outline:none;border-color:var(--orange)}
.btn{
  font-family:var(--font);font-weight:800;font-size:14.5px;cursor:pointer;
  padding:13px 22px;border-radius:12px;border:none;transition:.15s;
  display:inline-flex;align-items:center;gap:8px;
}
.btn.primary{background:var(--orange);color:#fff;box-shadow:0 4px 14px rgba(255,85,41,.3)}
.btn.primary:hover{background:var(--orange-dark)}
.btn.ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--orange);color:var(--orange-dark)}
.btn.danger{background:#fff;color:#c0392b;border:1.5px solid #f3d3ce}
.btn.danger:hover{background:#fdecea}
.btn.sm{padding:8px 14px;font-size:13px;border-radius:9px}

/* ---------- Content detail ---------- */
.detail{max-width:820px;margin:0 auto}
.detail .head{margin-bottom:20px}
.detail h1{font-size:28px;font-weight:800;letter-spacing:-.02em;margin-top:8px}
.detail .badges{display:flex;gap:8px;flex-wrap:wrap}
.detail .desc{color:var(--slate);margin-top:10px;font-size:16px}

.player{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);margin-top:22px;
}
.player audio{width:100%;margin-top:14px}
.player .cover{border-radius:12px;overflow:hidden;margin-bottom:16px;max-height:320px}

.game-frame{
  width:100%;height:75vh;min-height:520px;border:1px solid var(--line);
  border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);margin-top:8px;
}
.fullscreen-link{margin-top:14px;text-align:right}

/* ---------- Empty state ---------- */
.empty{
  text-align:center;padding:60px 20px;color:var(--slate);
  background:#fff;border:1.5px dashed var(--line);border-radius:var(--radius);
}
.empty .icon{font-size:44px;margin-bottom:10px;opacity:.4}

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--line);background:#fff;margin-top:50px;
  padding:26px 0;color:var(--slate);font-size:13.5px;
}
.site-footer .bar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
.site-footer b{color:var(--orange)}

/* ---------- Flash ---------- */
.flash{padding:13px 18px;border-radius:12px;margin-bottom:16px;font-weight:600;font-size:14.5px}
.flash.success{background:#EAF7EE;color:#127a3e}
.flash.error{background:#FDECEA;color:#c0392b}
.flash.info{background:var(--orange-soft);color:var(--orange-dark)}

/* ---------- Responsive ---------- */
@media(max-width:640px){
  .choose{grid-template-columns:1fr}
  .hero{padding:40px 0 34px}
  .site-header .bar{height:60px}
}