/* ============================================================
   SPA ALUMNI ASSOCIATION — STYLE SHEET
   Design language: the architectural drawing sheet.
   Title blocks, sheet numbers, scale bars, redline annotation,
   contour-plan blue, grid-paper ground. Sharp corners throughout;
   the discipline of a drafting board, not a soft app UI.
   ============================================================ */

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

/* ---------- Tokens ---------- */
:root{
  /* surfaces */
  --ink:        #1C1A17;
  --paper:      #EFEAE0;
  --paper-alt:  #E4DDCD;
  --paper-white:#FAF8F3;

  /* accents */
  --redline:      #C4361C;
  --redline-dark: #9B2A15;
  --planblue:     #2C4A63;
  --planblue-lt:  #3E6485;
  --graphite:     #6B655C;

  /* lines */
  --line:        #C9C0AC;
  --line-strong: #A69C86;

  /* type */
  --f-display: 'Fraunces', Georgia, serif;
  --f-body: 'IBM Plex Sans', -apple-system, Segoe UI, sans-serif;
  --f-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --container: 1180px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
svg{display:block;}

:focus-visible{
  outline:2px solid var(--redline);
  outline-offset:3px;
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
}

/* ---------- Grid-paper ground ---------- */
.grid-ground{
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:32px 32px;
  background-position:-1px -1px;
  position:relative;
}
.grid-ground::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(239,234,224,0.4) 0%, var(--paper) 78%);
  pointer-events:none;
}

/* ---------- Layout helpers ---------- */
.wrap{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:72px 0;}
.section--tight{padding:44px 0;}
.section--alt{background:var(--paper-alt);}

.eyebrow{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--redline);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--redline);
  display:inline-block;
}

h1,.h1{font-family:var(--f-display);font-weight:600;font-size:clamp(34px,5vw,58px);line-height:1.06;letter-spacing:-.01em;}
h2,.h2{font-family:var(--f-display);font-weight:600;font-size:clamp(26px,3.4vw,38px);line-height:1.12;letter-spacing:-.01em;}
h3,.h3{font-family:var(--f-display);font-weight:600;font-size:22px;line-height:1.25;}
.lede{font-size:19px;line-height:1.65;color:#3a362f;max-width:60ch;}
.body-text p + p{margin-top:14px;}
.body-text{max-width:68ch;color:#33302a;}
.body-text a{color:var(--planblue);border-bottom:1px solid var(--line-strong);}
.body-text a:hover{border-color:var(--planblue);}

.meta{font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;color:var(--graphite);text-transform:uppercase;}

/* ---------- Scale-bar divider ----------
   A literal architect's graphic scale bar, alternating fill,
   used wherever a page needs a rule between sections. */
.scale-bar{
  display:flex;
  align-items:center;
  gap:14px;
  margin:0;
  padding:0;
}
.scale-bar .teeth{
  flex:1;
  height:8px;
  display:flex;
}
.scale-bar .teeth span{flex:1;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);}
.scale-bar .teeth span:nth-child(odd){background:var(--ink);}
.scale-bar .teeth span:first-child{border-left:1px solid var(--ink);}
.scale-bar .teeth span:last-child{border-right:1px solid var(--ink);}
.scale-bar .label{font-family:var(--f-mono);font-size:11px;color:var(--graphite);white-space:nowrap;letter-spacing:.05em;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--f-mono);
  font-size:13px;
  letter-spacing:.04em;
  text-transform:uppercase;
  padding:13px 22px;
  border:1px solid var(--ink);
  border-radius:2px;
  background:transparent;
  color:var(--ink);
  transition:background .15s ease, color .15s ease, border-color .15s ease, transform .1s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--redline);border-color:var(--redline);color:var(--paper-white);}
.btn-primary:hover{background:var(--redline-dark);border-color:var(--redline-dark);}
.btn-outline{background:transparent;border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:var(--paper-white);}
.btn-plan{background:var(--planblue);border-color:var(--planblue);color:var(--paper-white);}
.btn-plan:hover{background:var(--planblue-lt);border-color:var(--planblue-lt);}
.btn-sm{padding:9px 16px;font-size:12px;}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- Sample-data badge ---------- */
.sample-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--redline);
  border:1px dashed var(--redline);
  padding:4px 9px;
  border-radius:2px;
  background:rgba(178,58,46,0.05);
}
.notice{
  border:1px solid var(--line-strong);
  border-left:3px solid var(--redline);
  background:var(--paper-white);
  padding:16px 18px;
  font-size:14px;
  color:#3a362f;
  margin:22px 0;
}
.notice strong{color:var(--redline);}

.source-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--planblue);
  border:1px solid var(--planblue);
  padding:4px 9px;
  border-radius:2px;
  background:rgba(44,74,99,0.05);
}

/* ---------- Header / Title block nav ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--paper);
  border-bottom:1px solid var(--ink);
}
.title-strip{
  border-bottom:1px solid var(--line);
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--graphite);
}
.title-strip .wrap{
  display:flex;justify-content:space-between;align-items:center;
  padding:6px 24px;
  flex-wrap:wrap;
  gap:6px;
}
.title-strip span{text-transform:uppercase;}

.navbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-seal{width:44px;height:44px;flex-shrink:0;color:var(--ink);object-fit:contain;}

.nav-flag{color:var(--redline);}
.nav-flag::after{
  content:"";display:inline-block;width:5px;height:5px;background:var(--redline);
  border-radius:50%;margin-left:6px;vertical-align:middle;
}
.brand-text .name{
  font-family:var(--f-display);
  font-weight:600;
  font-size:19px;
  line-height:1.1;
  letter-spacing:-.01em;
}
.brand-text .sub{
  font-family:var(--f-mono);
  font-size:10.5px;
  letter-spacing:.06em;
  color:var(--graphite);
  text-transform:uppercase;
}

.nav-primary{display:flex;align-items:center;gap:0;}
.nav-item{position:relative;}
.nav-link{
  display:flex;align-items:center;gap:4px;
  font-family:var(--f-mono);
  font-size:11.5px;
  letter-spacing:.03em;
  text-transform:uppercase;
  padding:12px 9px;
  color:var(--ink);
  border-bottom:2px solid transparent;
  white-space:nowrap;
}
.nav-item:hover .nav-link,
.nav-link.is-active{border-bottom-color:var(--redline);color:var(--redline);}
.nav-link .chev{width:9px;height:9px;transition:transform .15s ease;}
.nav-item:hover .chev{transform:rotate(180deg);}

.dropdown{
  position:absolute;top:100%;left:0;
  min-width:248px;
  background:var(--paper-white);
  border:1px solid var(--ink);
  box-shadow:4px 4px 0 rgba(28,26,23,0.08);
  padding:6px 0;
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s;
}
.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.dropdown a{
  display:block;
  padding:11px 18px;
  font-size:14px;
  border-bottom:1px solid var(--paper-alt);
}
.dropdown a:last-child{border-bottom:none;}
.dropdown a:hover{background:var(--paper-alt);color:var(--redline);}

.nav-cta{display:flex;align-items:center;gap:10px;}

.nav-toggle{display:none;background:none;border:1px solid var(--ink);padding:8px;border-radius:2px;}
.nav-toggle svg{width:20px;height:20px;}

/* Mobile nav */
.mobile-nav{
  display:none;
  position:fixed;inset:0;
  background:var(--paper);
  z-index:200;
  overflow-y:auto;
  padding:20px 24px 60px;
}
.mobile-nav.is-open{display:block;}
.mobile-nav-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--ink);}
.mobile-group{border-bottom:1px solid var(--line);}
.mobile-group-btn{
  width:100%;display:flex;justify-content:space-between;align-items:center;
  background:none;border:none;padding:16px 2px;
  font-family:var(--f-mono);font-size:14px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink);
}
.mobile-group-btn svg{width:14px;height:14px;transition:transform .15s ease;}
.mobile-group.is-open .mobile-group-btn svg{transform:rotate(45deg);}
.mobile-sub{display:none;padding:0 2px 16px 12px;}
.mobile-group.is-open .mobile-sub{display:block;}
.mobile-sub a{display:block;padding:9px 0;font-size:15px;color:var(--graphite);}
.mobile-sub a:hover{color:var(--redline);}
.mobile-flat{
  display:flex;justify-content:space-between;align-items:center;
  padding:16px 2px;border-bottom:1px solid var(--line);
  font-family:var(--f-mono);font-size:14px;letter-spacing:.05em;text-transform:uppercase;color:var(--redline);
}

@media (max-width:1240px){
  .nav-primary,.nav-cta .btn{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
}

/* ---------- Hero ---------- */
.hero{padding:64px 0 76px;}
.hero-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:56px;align-items:end;}
.hero-stamp-wrap{display:flex;justify-content:center;align-items:center;}
.logo-lockup{max-width:280px;width:100%;height:auto;}
.hero-lede{margin-top:20px;}
.hero-actions{margin-top:32px;}

.stat-strip{
  border-top:1px solid var(--ink);
  border-bottom:1px solid var(--ink);
  margin-top:56px;
}
.stat-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:22px 20px;border-left:1px solid var(--line);}
.stat:first-child{border-left:none;}
.stat .num{font-family:var(--f-display);font-weight:600;font-size:30px;}
.stat .lab{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--graphite);margin-top:4px;}

/* ---------- Page header (interior pages) ---------- */
.page-header{padding:46px 0 40px;border-bottom:1px solid var(--ink);}
.breadcrumb{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--graphite);
  margin-bottom:16px;
}
.breadcrumb a:hover{color:var(--redline);}
.breadcrumb .sep{margin:0 8px;color:var(--line-strong);}
.page-header .h1{margin-top:4px;}
.page-header .lede{margin-top:14px;}

/* ---------- Cards ---------- */
.card-grid{display:grid;gap:22px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

.card{
  background:var(--paper-white);
  border:1px solid var(--line-strong);
  padding:26px 24px;
  position:relative;
}
.card::before,.card::after{
  content:"";position:absolute;width:9px;height:9px;
  border-top:1px solid var(--ink);border-left:1px solid var(--ink);
  top:-1px;left:-1px;
}
.card::after{left:auto;right:-1px;border-left:none;border-right:1px solid var(--ink);}
.card-icon{width:30px;height:30px;color:var(--redline);margin-bottom:16px;}
.card h3{margin-bottom:8px;}
.card p{font-size:14.5px;color:#4a4640;}
.card .card-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:16px;font-family:var(--f-mono);font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--planblue);
}
.card .card-link svg{width:12px;height:12px;}
.card:hover .card-link{color:var(--redline);}

/* Section index cards (home) */
.section-card{
  display:block;
  background:var(--paper-white);
  border:1px solid var(--ink);
  padding:28px 24px;
  transition:box-shadow .15s ease, transform .15s ease;
}
.section-card:hover{box-shadow:5px 5px 0 var(--redline);transform:translate(-2px,-2px);}
.section-card .idx{font-family:var(--f-mono);font-size:11px;color:var(--redline);letter-spacing:.06em;}
.section-card h3{margin:10px 0 8px;}
.section-card p{font-size:14px;color:var(--graphite);}
.section-card ul{margin-top:14px;border-top:1px solid var(--line);padding-top:12px;}
.section-card li{font-size:13px;color:var(--graphite);padding:4px 0;}

/* ---------- Timeline (History) ---------- */
.timeline{border-left:1px solid var(--ink);margin-left:8px;padding-left:36px;}
.tl-item{position:relative;padding-bottom:44px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-41px;top:2px;
  width:11px;height:11px;background:var(--redline);border:2px solid var(--paper);
  outline:1px solid var(--ink);
}
.tl-year{font-family:var(--f-mono);font-size:13px;color:var(--redline);letter-spacing:.05em;margin-bottom:6px;}
.tl-item h3{margin-bottom:6px;}
.tl-item p{font-size:14.5px;color:#4a4640;max-width:60ch;}

/* ---------- Table ---------- */
.data-table{width:100%;border-collapse:collapse;margin:18px 0;}
.data-table th,.data-table td{
  text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:14.5px;
}
.data-table th{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--graphite);
  border-bottom:1px solid var(--ink);
}
.data-table tr:hover td{background:var(--paper-alt);}

/* ---------- Form ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 24px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1/-1;}
.field label{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--graphite);}
.field input,.field select,.field textarea{
  border:1px solid var(--line-strong);
  background:var(--paper-white);
  padding:11px 12px;
  font-family:var(--f-body);
  font-size:14.5px;
  color:var(--ink);
  border-radius:2px;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--planblue);}
.field textarea{resize:vertical;min-height:90px;}
.radio-row{display:flex;gap:20px;flex-wrap:wrap;}
.radio-opt{display:flex;align-items:center;gap:8px;font-size:14px;}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--graphite);}
.check-row input{margin-top:3px;}
.form-msg{
  display:none;margin-top:18px;padding:14px 16px;
  border:1px solid var(--planblue);background:rgba(44,74,99,0.06);
  font-size:14px;color:var(--planblue);
}
.form-msg.is-visible{display:block;}

@media (max-width:700px){.form-grid{grid-template-columns:1fr;}}

/* ---------- Gallery ---------- */
.gallery-tile{
  aspect-ratio:4/3;
  background:
    repeating-linear-gradient(135deg, var(--paper-alt), var(--paper-alt) 10px, var(--paper-white) 10px, var(--paper-white) 20px);
  border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;
  color:var(--graphite);
}
.gallery-tile svg{width:28px;height:28px;opacity:.55;}
.gallery-tile span{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;}
.gallery-cap{margin-top:10px;font-size:13px;color:var(--graphite);}

/* ---------- Video ---------- */
.video-tile{border:1px solid var(--ink);background:var(--paper-white);}
.video-frame{aspect-ratio:16/9;background:var(--ink);position:relative;}
.video-frame iframe{width:100%;height:100%;border:0;}
.video-meta{padding:14px 16px;}
.video-meta h3{font-size:16px;}

/* ---------- Status badges ---------- */
.badge{
  display:inline-block;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;
  padding:4px 9px;border-radius:2px;
}
.badge-open{background:rgba(44,74,99,0.1);color:var(--planblue);border:1px solid var(--planblue);}
.badge-closed{background:rgba(107,101,92,0.1);color:var(--graphite);border:1px solid var(--graphite);}

/* ---------- Seal / stamp ---------- */
.seal{color:var(--ink);}
.seal .seal-ring{fill:none;stroke:currentColor;}
.seal text{font-family:var(--f-mono);letter-spacing:1.5px;fill:currentColor;}

/* ---------- PDF embed ---------- */
.pdf-frame-wrap{border:1px solid var(--ink);background:var(--paper-white);}
.pdf-toolbar{
  display:flex;justify-content:space-between;align-items:center;
  padding:12px 16px;border-bottom:1px solid var(--line);
  font-family:var(--f-mono);font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--graphite);
}
.pdf-frame{width:100%;height:640px;border:0;display:block;}

/* ---------- Compass rose (footer signature) ---------- */
.compass{width:66px;height:66px;color:var(--paper-alt);}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);border-top:4px solid var(--redline);}
.footer-top{padding:56px 0 40px;display:grid;grid-template-columns:1.2fr repeat(5,1fr);gap:28px;}
.footer-brand .name{font-family:var(--f-display);font-size:20px;font-weight:600;}
.footer-brand .sub{font-family:var(--f-mono);font-size:11px;letter-spacing:.05em;color:#B8B2A4;text-transform:uppercase;margin-top:6px;}
.footer-brand p{margin-top:16px;font-size:13.5px;color:#C9C3B5;max-width:32ch;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:32px;height:32px;display:flex;align-items:center;justify-content:center;
  border:1px solid #4a453d;border-radius:2px;color:#C9C3B5;
}
.footer-social a:hover{border-color:var(--redline);color:var(--redline);}
.footer-social svg{width:15px;height:15px;}
.footer-col h4{font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#9A9384;margin-bottom:14px;}
.footer-col a{display:block;font-size:13.5px;color:#E6E1D6;padding:5px 0;}
.footer-col a:hover{color:var(--redline);}
.footer-strip{
  border-top:1px solid #3a362f;
  padding:20px 0;
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
}
.footer-strip .meta{color:#9A9384;}
.footer-strip .compass-block{display:flex;align-items:center;gap:14px;}
.reg-line{font-family:var(--f-mono);font-size:11.5px;color:#9A9384;letter-spacing:.03em;}

@media (max-width:980px){
  .footer-top{grid-template-columns:1fr 1fr;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-stamp-wrap{order:-1;justify-content:flex-start;}
  .stat-strip .wrap{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(3){border-left:none;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:640px){
  .footer-top{grid-template-columns:1fr;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .hero-grid{gap:36px;}
  .section{padding:52px 0;}
  .title-strip .wrap{font-size:10px;}
}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:90;
  width:42px;height:42px;
  background:var(--ink);color:var(--paper);
  border:1px solid var(--ink);border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .2s ease, transform .2s ease, visibility .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top svg{width:18px;height:18px;}