/* End Mill Discount - Site Framework (v1)
   Notes:
   - Shared template styles: header, nav, footer, layout
   - Home-only sections are gated by body.home
*/

:root{
  --bg: #0c1220;
  --surface: #0f172a;
  --surface2: #111c36;
  --text: #e6eefc;
  --muted: #b8c7e6;
  --line: rgba(255,255,255,.10);
  --accent: #d9252a; /* EMD red */
  --accent2: #1d4ed8; /* deep blue */
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 14px;
  --maxw: 1200px;
  --gap: 18px;
  --font: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  /* page background image (optional, can be replaced with CSS gradient only) */
  background-image: url("../images/bg_page.svg");
  background-size: cover;
  background-attachment: fixed;
  background-position: center top;
}

/* Utility */
.wrap{ max-width: var(--maxw); margin: 0 auto; padding: 0 18px; }
.card{
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
a{ color: inherit; }
a:hover{ color: #ffffff; }

/* Header (shared) */
.site-header{
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(8px);
  background: rgba(10,16,30,.80);
  border-bottom: 1px solid var(--line);
}
.site-header__bg{
  background-image: url("../images/bg_header.svg");
  background-size: cover;
  background-position: center;
}
.header-inner{
  display:flex;
  align-items:center;
  gap: 14px;
  padding: 12px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 240px;
}
.brand__mark{
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 35%, rgba(255,255,255,.35), rgba(255,255,255,0) 55%),
    linear-gradient(135deg, var(--accent), #ff6b6f);
  box-shadow: 0 8px 20px rgba(217,37,42,.25);
  display:grid;
  place-items:center;
  font-weight: 800;
  letter-spacing:.5px;
}
.brand__name{
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: .3px;
}
.brand__sub{
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

/* Search */
.header-search{
  flex: 1;
  display:flex;
  align-items:center;
  gap: 10px;
  min-width: 240px;
}
.header-search input[type="text"]{
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,.20);
  color: var(--text);
  outline: none;
}
.header-search input[type="text"]::placeholder{ color: rgba(230,238,252,.60); }
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: var(--text);
  text-decoration:none;
  cursor:pointer;
  user-select:none;
}
.btn--primary{
  background: linear-gradient(135deg, var(--accent), #ff5a5f);
  border-color: rgba(255,255,255,.18);
}
.btn--primary:hover{ filter: brightness(1.05); }
.btn--ghost:hover{ background: rgba(255,255,255,.10); }
.header-actions{
  display:flex;
  gap: 10px;
  align-items:center;
}

/* Layout (shared) */
.page{
  display:grid;
  grid-template-columns: 300px 1fr;
  gap: var(--gap);
  padding: 18px 0 30px;
}
@media (max-width: 980px){
  .page{ grid-template-columns: 1fr; }
}

/* Navigation (shared) */
.side-nav{
  padding: 12px;
  position: sticky;
  top: 76px; /* header height approx */
  align-self: start;
}
@media (max-width: 980px){
  .side-nav{ position: relative; top: auto; }
}
.nav-title{
  font-weight: 800;
  letter-spacing: .3px;
  margin: 6px 8px 10px;
}
.nav-help{
  color: var(--muted);
  font-size: 12px;
  margin: 0 8px 10px;
}
.nav-group{
  border-top: 1px solid var(--line);
  margin-top: 10px;
  padding-top: 10px;
}
details.nav-item{
  border-radius: 12px;
  overflow: hidden;
  margin: 8px 0;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.14);
}
details.nav-item[open]{
  background: rgba(0,0,0,.22);
  border-color: rgba(255,255,255,.14);
}
details.nav-item > summary{
  list-style:none;
  cursor:pointer;
  padding: 12px 12px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 700;
}
details.nav-item > summary::-webkit-details-marker{ display:none; }
.nav-caret{
  width: 10px;
  height: 10px;
  border-right: 2px solid rgba(255,255,255,.65);
  border-bottom: 2px solid rgba(255,255,255,.65);
  transform: rotate(45deg);
  margin-left: 8px;
  opacity: .85;
}
details.nav-item[open] .nav-caret{ transform: rotate(225deg); }

.nav-links{
  display:grid;
  gap: 6px;
  padding: 0 10px 12px 10px;
}
.nav-links a{
  display:block;
  padding: 10px 10px;
  border-radius: 10px;
  text-decoration:none;
  color: rgba(230,238,252,.92);
  border: 1px solid rgba(255,255,255,.08);
  background: rgba(255,255,255,.04);
}
.nav-links a:hover{
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.14);
}

/* Content */
.main{
  padding: 14px;
}
.h1{
  font-size: 30px;
  letter-spacing: .2px;
  margin: 6px 0 10px;
}
.p{
  margin: 0 0 12px;
  color: rgba(230,238,252,.86);
  line-height: 1.5;
}

/* Home-only placeholders (hidden unless body.home) */
.home-only{ display:none; }
body.home .home-only{ display:block; }

/* Footer (shared) */
.site-footer{
  border-top: 1px solid var(--line);
  background: rgba(10,16,30,.75);
  padding: 22px 0;
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 18px;
}
@media (max-width: 980px){
  .footer-grid{ grid-template-columns: 1fr; }
}
.footer-title{ font-weight: 800; margin-bottom: 8px; }
.footer-links a{
  display:block;
  text-decoration:none;
  color: rgba(230,238,252,.88);
  padding: 6px 0;
}
.footer-links a:hover{ color:#fff; }
.footer-note{
  margin-top: 12px;
  color: rgba(230,238,252,.70);
  font-size: 12px;
}