@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,500&family=Public+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --ink: #1F3A2E;
  --ink-soft: #2C4A3A;
  --paper: #F5F2E7;
  --card: #FFFFFF;
  --gold: #B07F2E;
  --gold-soft: #F0DFB8;
  --moss: #5F7A5A;
  --moss-soft: #E1EAE0;
  --charcoal: #2A2A24;
  --line: #E2DCC7;
  --rust: #A5613C;
  --navy: #2F4858;
  --plum: #5B4B6D;
  --radius: 14px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--paper);
  color: var(--charcoal);
  font-family: 'Public Sans', sans-serif;
  line-height: 1.5;
}
h1,h2,h3{
  font-family: 'Fraunces', serif;
  color: var(--ink);
  margin: 0 0 .4em 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}
a{ color: inherit; text-decoration: none; }
img{ max-width:100%; display:block; }
.mono{ font-family: 'IBM Plex Mono', monospace; }
.wrap{ max-width: 1240px; margin: 0 auto; padding: 0 28px; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}

/* ---------- NAV ---------- */
header.site{
  position: sticky; top:0; z-index: 50;
  background: rgba(245,242,231,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding: 16px 0;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-family:'Fraunces', serif; font-weight:600; font-size: 1.6rem;
  color: var(--ink);
}
.brand .leaf{
  width:34px; height:34px; flex:0 0 auto;
}
.brand small{
  display:block; font-family:'Public Sans',sans-serif; font-weight:500;
  font-size:.8rem; letter-spacing:.14em; text-transform:uppercase; color: var(--moss);
}
nav.links{ display:flex; align-items:center; gap: 30px; }
nav.links a{
  font-size:1.2rem; font-weight:500; color: var(--ink-soft);
  position:relative; padding: 4px 0;
}
nav.links a::after{
  content:''; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  background: var(--gold); transform: scaleX(0); transform-origin:left;
  transition: transform .2s ease;
}
nav.links a:hover::after{ transform: scaleX(1); }
.btn-login{
  background: var(--ink); color:#fff !important; padding: 10px 20px;
  border-radius: 999px; font-size:1.15rem; font-weight:600;
  transition: background .2s ease;
}
.btn-login:hover{ background: var(--ink-soft); }
.burger{
  display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px;
}
.burger span{ width:24px; height:2px; background: var(--ink); display:block; }

/* ---------- HERO ---------- */
.hero{
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
  padding: 74px 0 90px;
}
.hero-pattern{
  position:absolute; inset:0; opacity:.14; pointer-events:none;
  background-image: repeating-linear-gradient(90deg, transparent 0 46px, rgba(255,255,255,.5) 46px 48px);
}
.hero-inner{ position:relative; max-width: 720px; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:'IBM Plex Mono', monospace; font-size:.9rem; letter-spacing:.12em; text-transform:uppercase;
  color: var(--gold-soft); background: rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18); padding:6px 12px; border-radius:999px;
  margin-bottom: 22px;
}
.hero h1{ color:#fff; font-size: clamp(2.1rem, 4.4vw, 3.2rem); line-height:1.08; margin-bottom:.5em; }
.hero h1 em{ color: var(--gold-soft); font-style: italic; }
.hero p.lead{ color: rgba(255,255,255,.78); font-size:1.3rem; max-width: 560px; margin-bottom: 34px; }

.search-card{
  background:#fff; border-radius: var(--radius); padding: 10px;
  display:flex; gap:8px; box-shadow: 0 18px 40px rgba(0,0,0,.25);
  max-width: 640px;
}
.search-card select{
  border:none; background: var(--paper); border-radius:10px; padding: 0 12px;
  font-family:'Public Sans',sans-serif; font-size:1.15rem; color: var(--ink-soft);
  font-weight:500; cursor:pointer;
}
.search-card input[type="text"]{
  flex:1; border:none; outline:none; font-size:1.2rem; padding: 0 6px; font-family:'Public Sans',sans-serif; color: var(--charcoal);
}
.search-card button{
  background: var(--gold); border:none; color:#fff; font-weight:600; font-size:1.15rem;
  padding: 12px 22px; border-radius:10px; cursor:pointer; transition: background .2s ease;
  white-space:nowrap;
}
.search-card button:hover{ background:#96691f; }

.hero-stats{ display:flex; gap: 36px; margin-top: 42px; flex-wrap:wrap; }
.hero-stats div strong{
  display:block; font-family:'Fraunces', serif; font-size:2.2rem; color:#fff;
}
.hero-stats div span{ font-size:1rem; color: rgba(255,255,255,.6); text-transform:uppercase; letter-spacing:.08em; }

/* ---------- LAYOUT: main + sidebar ---------- */
.content-area{
  max-width: 1240px; margin: 0 auto; padding: 56px 28px 30px;
  display:grid;
  grid-template-columns: minmax(0,1fr) 360px;
  gap: 44px;
  align-items:start;
}
.main-col section{ margin-bottom: 56px; }
.section-head{ display:flex; align-items:baseline; justify-content:space-between; margin-bottom: 22px; gap: 16px;}
.section-head p{ color: var(--moss); margin:0; font-size:.92rem; }
.tag-eyebrow{
  font-family:'IBM Plex Mono',monospace; font-size:.7rem; letter-spacing:.12em; text-transform:uppercase;
  color: var(--gold); margin-bottom:8px; display:block;
}

/* subject grid */
.subject-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.subject-card{
  background: var(--card); border-radius: var(--radius); padding: 20px 18px;
  border: 1px solid var(--line); border-left: 4px solid var(--moss);
  transition: transform .18s ease, box-shadow .18s ease;
}
.subject-card:hover{ transform: translateY(-3px); box-shadow: 0 12px 26px rgba(31,58,46,.1); }
.subject-card svg{ width:26px; height:26px; stroke: var(--ink); margin-bottom:14px; }
.subject-card h3{ font-size:1.25rem; margin-bottom:4px; }
.subject-card span{ font-size:1rem; color: var(--moss); }

/* services */
.service-list{ display:grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.service-item{
  display:flex; gap:14px; background: var(--card); border:1px solid var(--line);
  border-radius: var(--radius); padding: 18px;
}
.service-item .num{
  font-family:'IBM Plex Mono',monospace; font-size:.78rem; color:#fff; background: var(--ink);
  width:30px; height:30px; border-radius:8px; display:flex; align-items:center; justify-content:center; flex:0 0 auto;
}
.service-item h3{ font-size:1.25rem; margin-bottom:3px; }
.service-item p{ font-size:1.1rem; color:#5b5b50; margin:0; }

/* about strip */
.about-strip{
  background: var(--moss-soft); border-radius: var(--radius); padding: 30px 32px;
  display:flex; gap: 30px; align-items:center; justify-content:space-between; flex-wrap:wrap;
}
.about-strip p{ max-width: 460px; color: var(--ink-soft); margin:0; font-size:.96rem; }
.about-strip .quote-mark{ font-family:'Fraunces',serif; font-size:3rem; color: var(--gold); line-height:0; margin-right:6px; vertical-align:-14px; }

/* ---------- SIDEBAR / CATALOG ---------- */
aside.catalog{
  position: sticky; top: 90px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
}
aside.catalog .cat-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:4px; }
aside.catalog .cat-head h2{ font-size: 1.18rem; margin:0; }
aside.catalog .cat-head a{ font-size:.8rem; color: var(--gold); font-weight:600; }
aside.catalog > p.sub{ font-size:.82rem; color:#7a7a6c; margin: 0 0 18px 0; }

.book-row{
  display:flex; gap:12px; padding: 12px 0; border-bottom: 1px dashed var(--line);
}
.book-row:last-of-type{ border-bottom:none; padding-bottom:4px; }
.spine{
  width:46px; height:66px; border-radius: 4px 8px 8px 4px; flex:0 0 auto;
  position:relative; box-shadow: inset -6px 0 0 rgba(0,0,0,.08);
  display:flex; align-items:flex-end;
}
.spine .callno{
  writing-mode: vertical-rl; text-orientation: mixed;
  font-family:'IBM Plex Mono',monospace; font-size:.58rem; color:rgba(255,255,255,.92);
  padding: 4px 0 6px; margin:0 auto;
}
.book-info{ min-width:0; }
.book-info h3{
  font-family:'Public Sans',sans-serif; font-weight:600; font-size:.87rem; color: var(--ink);
  margin:0 0 3px 0; line-height:1.3;
}
.book-info .author{ font-size:.78rem; color:#7a7a6c; margin:0 0 6px 0; }
.meta-row{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.callno-chip{
  font-family:'IBM Plex Mono',monospace; font-size:.68rem; background: var(--paper);
  border:1px solid var(--line); padding: 2px 7px; border-radius:5px; color:#61604f;
}
.status{ font-size:.68rem; font-weight:600; padding:2px 8px; border-radius:999px; }
.status.available{ background: var(--moss-soft); color: #35553c; }
.status.borrowed{ background: var(--gold-soft); color: #7a5417; }

.hours-card{
  margin-top:20px; padding-top:18px; border-top:1px solid var(--line);
}
.hours-card h3{ font-size:.92rem; margin-bottom:10px; }
.hours-row{ display:flex; justify-content:space-between; font-size:.82rem; color:#5b5b50; padding:3px 0; }
.hours-row strong{ color: var(--ink-soft); font-weight:600; }

/* ---------- FOOTER ---------- */
footer.site{
  background: var(--ink); color: rgba(255,255,255,.7); margin-top: 20px;
}
.footer-grid{
  padding: 54px 28px 30px; max-width:1240px; margin:0 auto;
  display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 34px;
}
.footer-grid h4{ color:#fff; font-family:'Public Sans',sans-serif; font-size:.85rem; letter-spacing:.06em; text-transform:uppercase; margin-bottom:14px; }
.footer-grid p{ font-size:.88rem; max-width:280px; }
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid li{ margin-bottom:9px; font-size:.88rem; }
.footer-grid a:hover{ color:#fff; }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12); padding: 18px 28px; max-width:1240px; margin:0 auto;
  display:flex; justify-content:space-between; font-size:.78rem; flex-wrap:wrap; gap:8px;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 980px){
  .content-area{ grid-template-columns: 1fr; }
  aside.catalog{ position:static; }
  .subject-grid{ grid-template-columns: repeat(2,1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px){
  nav.links{
    position:absolute; top:100%; left:0; right:0; background: var(--paper);
    flex-direction:column; align-items:flex-start; gap:0; border-bottom:1px solid var(--line);
    max-height:0; overflow:hidden; transition: max-height .25s ease;
  }
  nav.links.open{ max-height: 320px; }
  nav.links a{ padding: 14px 28px; width:100%; }
  nav.links .btn-login{ margin: 10px 28px 18px; }
  .burger{ display:flex; }
  .search-card{ flex-wrap:wrap; }
  .search-card select{ order:1; width:100%; padding:10px 12px; }
  .search-card input{ order:2; padding:8px 6px; }
  .search-card button{ order:3; width:100%; }
  .service-list{ grid-template-columns: 1fr; }
  .subject-grid{ grid-template-columns: 1fr 1fr; }
  .about-strip{ padding:24px; }
  .footer-grid{ grid-template-columns: 1fr; padding-top:40px; }
}