/* =========================================================
   CU BOULDER AI CLUB - DESIGN SYSTEM
   Tokens derived from official brand files:
   black #000000 / navy #0A1A2F / tan #E8DDC7 / white #FFFFFF
   Signature device: a single bottom-right facet cut, echoing
   the low-poly bison mark, applied consistently to every
   contained shape (buttons, cards, images, tags).
   ========================================================= */

:root{
  /* --- brand --- */
  --ink:        #000000;
  --navy:       #0a1a2f;
  --navy-2:     #142a45;   /* hover / raised navy */
  --tan:        #e8ddc7;
  --tan-2:      #d9c8a4;   /* deeper tan, borders/hover on tan */
  --paper:      #faf8f4;   /* warm off-white base, not stark white */
  --white:      #ffffff;

  /* --- text --- */
  --text:       #14140f;
  --text-soft:  #5b5850;
  --text-on-navy:      #f4f1e8;
  --text-on-navy-soft: #9fa8b5;

  /* --- lines --- */
  --line:       rgba(10,26,47,0.14);
  --line-soft:  rgba(10,26,47,0.08);
  --line-on-navy: rgba(244,241,232,0.18);

  /* --- type --- */
  --f-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-body:    "Inter", "Helvetica Neue", Arial, sans-serif;
  --f-mono:    "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  /* --- signature facet cut --- */
  --cut-lg: 34px;
  --cut-md: 20px;
  --cut-sm: 10px;

  --max: 1220px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

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

body{
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--f-body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img{ max-width: 100%; display: block; }
a{ color: inherit; }
button{ font: inherit; }

::selection{ background: var(--navy); color: var(--tan); }

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

.skip-link{
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  background: var(--ink);
  color: var(--tan);
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 16px;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: top .15s ease;
}
.skip-link:focus{ top: 12px; }

.wrap{
  width: min(var(--max), 100% - 48px);
  margin: 0 auto;
}

/* =========================================================
   TYPE SCALE
   ========================================================= */

h1,h2,h3,h4{
  font-family: var(--f-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--ink);
}

.on-navy h1, .on-navy h2, .on-navy h3, .on-navy h4{ color: var(--white); }

h1{ font-size: clamp(2.6rem, 5.4vw, 4.6rem); line-height: 1.02; letter-spacing: -0.03em; }
h2{ font-size: clamp(1.9rem, 3.2vw, 2.7rem); line-height: 1.08; }
h3{ font-size: 1.28rem; line-height: 1.2; }
h4{ font-size: 1rem; letter-spacing: -0.01em; }

p{ margin: 0; }

.lede{
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 54ch;
}
.on-navy .lede{ color: var(--text-on-navy-soft); }

.kicker{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--navy);
}
.on-navy .kicker{ color: var(--tan); }
.kicker::before{
  content: "";
  width: 16px;
  height: 1px;
  background: currentColor;
}

/* =========================================================
   BUTTONS  (facet-cut signature)
   ========================================================= */

.btn{
  --cut: var(--cut-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 14px 22px;
  border: 1px solid transparent;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: background-color .15s ease, color .15s ease, border-color .15s ease, transform .15s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover{ transform: translate(1px,1px); }

.btn-primary{ background: var(--ink); color: var(--tan); }
.btn-primary:hover{ background: var(--tan); color: var(--ink); }

.btn-ghost{ background: transparent; color: var(--navy); border-color: var(--line); }
.btn-ghost:hover{ border-color: var(--navy); }

.on-navy .btn-ghost{ color: var(--tan); border-color: var(--line-on-navy); }
.on-navy .btn-ghost:hover{ border-color: var(--tan); }

.card.dark .btn-ghost{ color: var(--tan); border-color: var(--line-on-navy); }
.card.dark .btn-ghost:hover{ border-color: var(--tan); }

.btn-tan{ background: var(--tan); color: var(--navy); }
.btn-tan:hover{ background: var(--white); }

.btn-block{ width: 100%; justify-content: center; }

/* =========================================================
   HEADER / NAV
   ========================================================= */

.site-header{
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.brand-mark{ display: flex; align-items: center; }
.brand-mark img{ height: 38px; width: auto; }

.nav{
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links{
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links a{
  text-decoration: none;
  color: var(--text-soft);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}
.nav-links a:hover{ color: var(--ink); }
.nav-links a[aria-current="page"]{ color: var(--navy); border-bottom-color: var(--navy); }

.nav-toggle{
  display: none;
  background: none;
  border: 1px solid var(--line);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content: "";
  display: block;
  width: 18px;
  height: 1px;
  background: var(--ink);
  position: relative;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before{ position: absolute; top: -6px; }
.nav-toggle span::after{ position: absolute; top: 6px; }

/* =========================================================
   SECTIONS
   ========================================================= */

.section{ padding: 96px 0; }
.section-tight{ padding: 64px 0; }

.section.bg-tan{ background: var(--tan); }
.section.bg-navy{ background: var(--navy); }
.section.bg-ink{ background: var(--ink); }
.section.bg-paper{ background: var(--paper); }

.section-head{
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.section-head .heading-group{ display: grid; gap: 14px; max-width: 56ch; }

/* ridge divider - angular horizon line, used sparingly */
.ridge{
  display: block;
  width: 100%;
  height: 40px;
  line-height: 0;
}
.ridge svg{ width: 100%; height: 100%; display: block; }

/* =========================================================
   HERO
   ========================================================= */

.hero{
  padding: 76px 0 0;
  position: relative;
  overflow: hidden;
}

.hero-grid{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  padding-bottom: 64px;
}

.hero-copy{ display: grid; gap: 22px; }

.hero h1{ max-width: 12ch; }

.hero-actions{ display: flex; gap: 14px; flex-wrap: wrap; margin-top: 6px; }

.hero-stats{
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 28px;
  margin-top: 28px;
  font-family: var(--f-mono);
}
.hero-stats div strong{ display: block; font-size: 1.5rem; color: var(--ink); font-family: var(--f-display); }
.hero-stats div span{ font-size: 0.72rem; color: var(--text-soft); letter-spacing: 0.04em; text-transform: uppercase; }

.hero-mark{
  position: relative;
  aspect-ratio: 1 / 1.05;
  background: var(--navy);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-lg)), calc(100% - var(--cut-lg)) 100%, 0 100%);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 30px;
}
.hero-mark img{ height: 100%; width: auto; max-width: 100%; object-fit: contain; opacity: 0.98; }

/* =========================================================
   CARDS  (facet-cut)
   ========================================================= */

.card{
  --cut: var(--cut-md);
  background: var(--white);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  padding: 34px;
  display: grid;
  gap: 14px;
  align-content: start;
}
.card.on-tan{ background: var(--white); }
.card.dark{ background: var(--navy); border-color: var(--line-on-navy); }
.card.dark *{ color: var(--text-on-navy); }
.card.dark .kicker{ color: var(--tan); }

.card .num{ font-family: var(--f-mono); font-size: 0.78rem; color: var(--text-soft); }

.card-list{
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
  color: var(--text-soft);
  font-size: 0.94rem;
}

.grid-2{ display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.feature-card h3{ margin-top: 4px; }
.feature-card p{ color: var(--text-soft); font-size: 0.96rem; }

.card-text{ color: var(--text-soft); font-size: 0.95rem; }

/* =========================================================
   EVENT LIST
   ========================================================= */

.event-row{
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.event-row:last-child{ border-bottom: 1px solid var(--line); }
.event-row--first{ border-top: none; padding-top: 0; }
.event-date{ font-family: var(--f-mono); font-size: 0.82rem; color: var(--navy); }
#home-next-date{ display: flex; flex-direction: column; align-items: center; gap: 2px; }
#home-next-date span{ display: block; }
.on-navy .event-date{ color: var(--tan); }
.event-row h4{ font-family: var(--f-display); font-weight: 700; font-size: 1.08rem; }
.event-tag-row{ display: flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }

.tag{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 10px 5px 8px;
  border: 1px solid var(--line);
  color: var(--text-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}

/* =========================================================
   TEAM
   ========================================================= */

.team-card{
  display: grid;
  gap: 12px;
}
.team-photo{
  aspect-ratio: 1;
  background: var(--tan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-md)), calc(100% - var(--cut-md)) 100%, 0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--navy);
  border: 1px solid var(--line);
}
.team-photo img{ width: 100%; height: 100%; object-fit: cover; display: block; }
.team-photo--empty{
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--text-soft);
  border-color: var(--line);
}
.team-info{ display: grid; gap: 4px; }
.team-name-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.team-card h4{ margin-top: 2px; }
.team-role{ font-family: var(--f-mono); font-size: 0.76rem; color: var(--text-soft); text-transform: uppercase; letter-spacing: 0.04em; }
.advisory-grid{ display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.team-linkedin{
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  color: var(--navy);
  background: var(--tan);
  border: 1px solid var(--line);
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.team-linkedin:hover{
  background: var(--navy);
  color: var(--tan);
  transform: translateY(-1px);
}
.committee-name{ font-size: 1.05rem; }

/* Sponsors - match exec/analyst card scale, tuned for navy bg */
.sponsor-card .team-info{ gap: 6px; }
.sponsor-photo{
  aspect-ratio: 1;
  background: var(--tan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-md)), calc(100% - var(--cut-md)) 100%, 0 100%);
  overflow: hidden;
  border: 1px solid var(--line-on-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--navy);
}
.sponsor-photo img{ width: 100%; height: 100%; object-fit: cover; display: block; }
.sponsor-photo--empty{
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--text-on-navy-soft);
}
.sponsor-card .team-role{ color: var(--tan); }
.sponsor-email{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--text-on-navy-soft);
  text-decoration: none;
  word-break: break-all;
  transition: color .15s ease;
}
.sponsor-email:hover{ color: var(--tan); text-decoration: underline; }

/* =========================================================
   FORM
   ========================================================= */

.field{ display: grid; gap: 8px; margin-bottom: 20px; }
.field label{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-soft);
}
.field input, .field select, .field textarea{
  font-family: var(--f-body);
  font-size: 0.98rem;
  padding: 13px 14px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--text);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color: var(--navy); }
.field textarea{ min-height: 120px; resize: vertical; }
.field-row{ display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.consent{
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 10px;
  margin: 4px 0 20px;
  font-family: var(--f-body);
  font-size: 0.86rem;
  line-height: 1.45;
  color: var(--text-soft);
}
.consent input{ margin-top: 3px; width: 16px; height: 16px; accent-color: var(--navy); }
.consent a{ white-space: nowrap; }

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer{ background: var(--navy); color: var(--text-on-navy); padding: 64px 0 28px; }
.footer-top{
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line-on-navy);
}
.footer-top img{ height: 26px; margin-bottom: 16px; }
.footer-top p{ color: var(--text-on-navy-soft); font-size: 0.92rem; max-width: 32ch; }
.footer-col h4{ color: var(--tan); font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 16px; font-weight: 600;}
.footer-col ul{ list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-col a{ text-decoration: none; color: var(--text-on-navy-soft); font-size: 0.92rem; transition: color .15s ease; }
.footer-col li{ color: var(--text-on-navy-soft); font-size: 0.92rem; }
.footer-col a:hover{ color: var(--tan); }
.footer-bottom{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--text-on-navy-soft);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-legal a{ color: var(--text-on-navy-soft); text-decoration: none; transition: color .15s ease; }
.footer-legal a:hover{ color: var(--tan); }

/* =========================================================
   MISC PAGE PARTS
   ========================================================= */

.page-hero{ padding: 64px 0 56px; border-bottom: 1px solid var(--line); }
.page-hero .kicker{ margin-bottom: 18px; }

/* ---------- events countdown ---------- */
.countdown{ text-align: center; }
.countdown-label{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  letter-spacing: -0.01em;
  margin: 0 0 28px;
}
.countdown-clock{
  display: inline-flex;
  align-items: flex-start;
  gap: clamp(8px, 2vw, 20px);
  justify-content: center;
}
.countdown-unit{ display: flex; flex-direction: column; align-items: center; min-width: clamp(64px, 16vw, 104px); }
.countdown-num{
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.6rem, 9vw, 5rem);
  line-height: 1;
  color: var(--navy);
  background: var(--tan);
  padding: 14px 10px 12px;
  width: 100%;
  text-align: center;
  /* signature facet cut, bottom-right */
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}
.countdown-unit-label{
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}
.countdown-sep{
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(2rem, 7vw, 4rem);
  line-height: 1.1;
  color: var(--tan-2);
  align-self: flex-start;
  margin-top: 8px;
}
.countdown-sub{
  margin: 30px auto 0;
  max-width: 46ch;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--ink);
}
@media (max-width: 420px){
  .countdown-sep{ display: none; }
  .countdown-clock{ gap: 10px; }
  .countdown-unit{ min-width: 0; flex: 1; }
}

.split{ display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.consulting-split{ align-items: start; }

.consulting-copy{
  padding-top: 0;
}

.consulting-copy .lede{
  max-width: 38ch;
}

.persona-list{ display: grid; gap: 0; }
.persona{ display: grid; grid-template-columns: 40px 1fr; gap: 18px; padding: 24px 0; border-top: 1px solid var(--line); }
.persona:last-child{ border-bottom: 1px solid var(--line); }
.persona .idx{ font-family: var(--f-mono); font-size: 0.8rem; color: var(--navy); }
.persona h4{ margin-bottom: 6px; }
.persona p{ color: var(--text-soft); font-size: 0.94rem; }
.persona--compact{ grid-template-columns: 28px 1fr; padding: 16px 0; }
.persona--last{ border-bottom: none; }
.persona-title{ font-size: 1.02rem; }
.faq-item{ grid-template-columns: 1fr; padding: 16px 0; border-color: var(--line-on-navy); }
.faq-item h4{ font-size: 1rem; }
.faq-item p{ font-size: 0.92rem; }
.faq-item:last-child{ border-bottom: none; }
.link-tan{ color: var(--tan); }
.link-tan:hover{ text-decoration: underline; }
.btn-row{ display: flex; gap: 12px; flex-wrap: wrap; }

/* program selection paths */
.selection-process{
  display: grid;
  gap: 18px;
}
.program-tabs{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.program-tab{
  position: relative;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--navy);
  font-family: var(--f-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
  transition: background-color .15s ease, border-color .15s ease, color .15s ease, transform .15s ease;
}
.program-tab:hover{
  border-color: var(--navy);
  transform: translateY(-1px);
}
.program-tab.is-active{
  border-color: var(--navy);
  background: var(--navy);
  color: var(--tan);
}
.program-tab:focus-visible{
  outline: 3px solid var(--tan);
  outline-offset: 3px;
}
.selection-process__panel-container{
  min-width: 0;
}
.selection-path{
  position: relative;
  overflow: hidden;
  display: none;
  animation: joinRise .35s ease both;
  transition: transform .2s ease, border-color .2s ease, background-color .2s ease;
}
.selection-path.is-active{
  display: block;
}
.selection-path[hidden]{
  display: none;
}
.selection-path:hover{
  transform: translateY(-2px);
  border-color: var(--navy);
}
.selection-path__head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}
.selection-path__head .kicker::before{ width: 12px; }
.selection-path__head .note-mono{ white-space: nowrap; }
.selection-path .persona:first-child{ border-top: none; }

@keyframes joinRise{
  from{ opacity: 0; transform: translateY(12px); }
  to{ opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce){
  .program-tab,
  .selection-path{
    transition: none;
    animation: none;
  }
}

.how-it-works .persona{
  grid-template-columns: 24px 1fr;
  align-items: start;
}

.how-it-works .idx{
  line-height: 1.4;
  padding-top: 1px;
}
.how-it-works-item{ padding: 14px 0; }
.how-it-works-item:last-child{ border-bottom: none; }

.cta-band{
  background: var(--tan);
  padding: 64px 0;
}
.cta-band-inner{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}

.not-found{
  min-height: 100vh;
  display: flex;
  align-items: center;
}
.not-found h1{
  max-width: 10ch;
  margin-top: 18px;
}
.not-found .lede{
  margin-top: 20px;
}
.not-found .btn{
  margin-top: 28px;
}

.watermark-bison{
  position: absolute;
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

/* =========================================================
   UTILITY / MODIFIER CLASSES
   (replaces repeated inline styles for consistency)
   ========================================================= */

/* spacing helpers */
.mt-sm{ margin-top: 12px; }
.mt-md{ margin-top: 16px; }
.mt-lg{ margin-top: 18px; }
.mt-xl{ margin-top: 22px; }
.mb-md{ margin-bottom: 24px; }

/* heading + lede rhythm inside page-hero / sections */
.heading{ margin-top: 14px; }
.lede-block{ margin-top: 18px; }
.hero-title{ max-width: 16ch; }
.hero-title--wide{ max-width: 18ch; }

/* card variants */
.card--bare{
  padding: 0;
  background: transparent;
  border: none;
  clip-path: none;
}
.card--white{ background: var(--white); }

/* small mono note text */
.note-mono{
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--text-soft);
}

/* form feedback */
.form-status{
  margin-top: 16px;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  padding: 12px 14px;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}
.form-status.is-success{ border-color: var(--navy); color: var(--navy); background: var(--tan); }
.form-status.is-error{ border-color: #8a1f1f; color: #8a1f1f; background: #fbeaea; }
.form-status[hidden]{ display: none; }

/* mobile: keep header row to logo + toggle only */
@media (max-width: 720px){
  .nav-cta{ display: none; }
}

/* =========================================================
   EVENT CALENDAR  (on-brand month grid)
   ========================================================= */

.cal{
  --cut: var(--cut-sm);
  border: 1px solid var(--line);
  background: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  padding: 28px;
}
.cal-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.cal-head h3{ font-family: var(--f-display); font-weight: 700; font-size: 1.4rem; letter-spacing: -0.02em; }
.cal-head .cal-month{ font-family: var(--f-mono); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--navy); }

.cal-grid{
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}
.cal-dow{
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
  text-align: center;
  padding-bottom: 6px;
}
.cal-day{
  position: relative;
  aspect-ratio: 1 / 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 8px;
  border: 1px solid var(--line-soft);
  background: var(--paper);
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--text-soft);
  overflow: hidden;
}
.cal-day.is-empty{ background: transparent; border-color: transparent; }
.cal-day.has-event{
  background: var(--tan);
  border-color: var(--tan-2);
  color: var(--navy);
  cursor: default;
}
.cal-day .cal-num{ font-weight: 600; }
.cal-day .cal-dot{
  margin-top: auto;
  font-family: var(--f-mono);
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--navy);
}
.cal-legend{
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 22px;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--text-soft);
}
.cal-legend span{ display: inline-flex; align-items: center; gap: 8px; }
.cal-legend .swatch{ width: 14px; height: 14px; border: 1px solid var(--tan-2); background: var(--tan); }
.cal-legend .swatch--free{ background: var(--paper); border-color: var(--line); }
.swatch-link{
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--navy);
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease;
}
.swatch-link:hover{ border-bottom-color: var(--navy); }

@media (max-width: 720px){
  .cal{ padding: 18px; }
  .cal-grid{ gap: 5px; }
  .cal-day{ padding: 5px; font-size: 0.66rem; }
  .cal-day .cal-dot{ font-size: 0.5rem; }
}

@media (max-width: 420px){
  .cal{ padding: 14px; }
  .cal-grid{ gap: 4px; }
  .cal-day{ padding: 4px; font-size: 0.6rem; }
  .cal-day .cal-num{ font-size: 0.72rem; }
  .cal-day .cal-dot{ font-size: 0.46rem; letter-spacing: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
  .cal-dow{ font-size: 0.56rem; letter-spacing: 0.02em; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 960px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-mark{ max-width: 340px; }
  .grid-4{ grid-template-columns: repeat(2, 1fr); }
  .grid-3{ grid-template-columns: repeat(2, 1fr); }
  .footer-top{ grid-template-columns: 1fr 1fr; }
  .split{ grid-template-columns: 1fr; }
  .advisory-grid{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px){
  .site-header{ z-index: 60; }
  .wrap{ width: min(var(--max), calc(100% - 32px)); }
  .site-header .wrap{
    align-items: flex-start;
    flex-wrap: wrap;
    column-gap: 16px;
    row-gap: 0;
  }
  .nav{
    display: contents;
  }
  .nav-links{
    display: none;
    width: 100%;
    order: 3;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    margin-top: 8px;
    padding: 24px 0 6px;
    gap: 22px;
    font-size: 1rem;
    border-top: 1px solid var(--line);
    background: transparent;
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    z-index: 55;
  }
  .nav-links.is-open{
    display: flex;
  }
  .nav-toggle{ display: flex; }
  .hero-stats{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
  .hero-stats div{ min-width: 0; }
  .hero-stats div span{ display: block; overflow-wrap: anywhere; }
  .card{ padding: 24px; }
  .selection-path__head{ flex-wrap: wrap; gap: 6px 12px; }
  .selection-path__head .note-mono{ white-space: normal; }
  .grid-4, .grid-3, .grid-2{ grid-template-columns: 1fr; }
  .advisory-grid{ grid-template-columns: 1fr; }
  .event-row{ grid-template-columns: 1fr; gap: 8px; }
  .footer-top{ grid-template-columns: 1fr; }
  .field-row{ grid-template-columns: 1fr; }
  .section{ padding: 64px 0; }
  .cta-band-inner{ flex-direction: column; align-items: flex-start; }
}

/* =========================================================
   MOTION / ANIMATION LAYER  (facet-cut signature)
   All of this is caught by the global reduced-motion
   kill-switch at the top of the file.
   ========================================================= */

/* 1. Facet-cut kinetics - cards/buttons "cut into" view + hover fill */
.reveal{
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s ease, transform .5s ease, clip-path .35s ease;
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* buttons: corner-cut animates open on hover */
.btn{
  --cut: var(--cut-sm);
  transition: background-color .15s ease, color .15s ease, border-color .15s ease, transform .15s ease, clip-path .2s ease;
}
.btn:hover{
  transform: translate(1px,1px);
  --cut: 0px;
}

/* cards: tan/navy fill sweeps in from the cut corner on hover */
.card, .team-card, .cal{
  transition: transform .25s ease, box-shadow .25s ease, background-color .25s ease, border-color .25s ease;
}
.card::after, .team-card::after{
  content: "";
  position: absolute;
  inset: 0;
  background: var(--tan);
  clip-path: polygon(100% 100%, 100% 100%, 100% 100%, 100% 100%);
  opacity: 0;
  pointer-events: none;
  transition: clip-path .3s ease, opacity .3s ease;
  z-index: 0;
}
.card{ position: relative; overflow: hidden; }
.card > *{ position: relative; z-index: 1; }
.card:hover::after, .team-card:hover::after{
  opacity: 0.10;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}
.card.dark:hover::after{ background: var(--tan); opacity: 0.08; }

/* 2. Hero mark assembly - bison facets fade/scale in on load */
.hero-mark{ opacity: 0; transform: scale(.96); animation: markIn .7s ease .1s forwards; }
.hero-mark img{ transform-origin: center bottom; }
@keyframes markIn{
  to{ opacity: 1; transform: scale(1); }
}
.hero-copy .kicker, .hero-copy h1, .hero-copy .lede, .hero-copy .hero-actions, .hero-copy .hero-stats{
  opacity: 0;
  transform: translateY(12px);
  animation: riseIn .6s ease forwards;
}
.hero-copy .kicker{ animation-delay: .05s; }
.hero-copy h1{ animation-delay: .12s; }
.hero-copy .lede{ animation-delay: .2s; }
.hero-copy .hero-actions{ animation-delay: .28s; }
.hero-copy .hero-stats{ animation-delay: .36s; }
@keyframes riseIn{ to{ opacity: 1; transform: translateY(0); } }

/* 4. Ridge divider - drawn stroke on first view */
.ridge svg polygon{
  stroke: var(--navy);
  stroke-width: 1.5;
  fill: var(--navy);
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
}
.ridge.is-drawn svg polygon{
  animation: ridgeDraw 1.1s ease forwards;
}
@keyframes ridgeDraw{
  to{ stroke-dashoffset: 0; }
}

/* 5. Stat counters - handled in JS; this is the resting style */
.hero-stats div strong{ font-variant-numeric: tabular-nums; }

/* 6. Team card 3D tilt - subtle, cursor-following (JS sets vars) */
.team-card{
  transform-style: preserve-3d;
  transition: transform .18s ease, box-shadow .25s ease;
  will-change: transform;
}
.team-card:hover{ box-shadow: 0 18px 40px -22px rgba(10,26,47,.45); }
.team-photo, .sponsor-photo{ transition: transform .18s ease; }
.team-card:hover .team-photo,
.team-card:hover .sponsor-photo{ transform: translateZ(18px); }

/* 7. Scroll progress indicator - facet-shaped bar in header */
.scroll-progress{
  position: absolute;
  left: 0; bottom: -1px;
  height: 3px;
  width: 100%;
  background: transparent;
  pointer-events: none;
  z-index: 5;
}
.scroll-progress > i{
  display: block;
  height: 100%;
  width: 0%;
  background: var(--tan);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 6px 100%, 0 0);
  transition: width .08s linear;
}

/* 8. Page transitions (View Transitions API) - progressive enhancement */
@media (prefers-reduced-motion: no-preference){
  ::view-transition-old(root),
  ::view-transition-new(root){
    animation-duration: .32s;
  }
  ::view-transition-old(root){
    animation-name: facetOut;
  }
  ::view-transition-new(root){
    animation-name: facetIn;
  }
}
@keyframes facetOut{
  to{ opacity: 0; clip-path: polygon(0 0, 100% 0, 100% 0, 100% 0, 0 0); }
}
@keyframes facetIn{
  from{ opacity: 0; clip-path: polygon(0 0, 100% 0, 100% 100%, 100% 100%, 100% 100%); }
  to{ opacity: 1; clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 0 100%); }
}

/* 9. Marquee / ticker - pauses on hover/focus */
.marquee{
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  padding: 14px 0;
}
.marquee-track{
  display: inline-flex;
  gap: 48px;
  white-space: nowrap;
  animation: marquee 26s linear infinite;
  will-change: transform;
}
.marquee:hover .marquee-track,
.marquee:focus-within .marquee-track{ animation-play-state: paused; }
.marquee-track span{
  font-family: var(--f-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.marquee-track span::before{
  content: "";
  width: 8px; height: 8px;
  background: var(--tan-2);
  transform: rotate(45deg);
}
@keyframes marquee{
  from{ transform: translateX(0); }
  to{ transform: translateX(-50%); }
}

/* calendar loading + failure states */
.cal-loading, .cal-error{
  padding: 40px 0;
  text-align: center;
  font-family: var(--f-mono);
  font-size: 0.82rem;
  color: var(--text-soft);
}
.cal-error a{ color: var(--navy); }
.cal-skeleton{
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}
.cal-skeleton > i{
  aspect-ratio: 1 / 1;
  background: linear-gradient(100deg, var(--line-soft) 30%, var(--tan-2) 50%, var(--line-soft) 70%);
  background-size: 200% 100%;
  animation: shimmer 1.2s linear infinite;
  border: 1px solid var(--line-soft);
}
@keyframes shimmer{
  from{ background-position: 200% 0; }
  to{ background-position: -200% 0; }
}
.cal-nav{
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}
.cal-nav button{
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--navy);
  padding: 7px 12px;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
  transition: border-color .15s ease, background-color .15s ease;
}
.cal-nav button:hover{ border-color: var(--navy); background: var(--tan); }
.cal-nav .cal-label{ font-family: var(--f-mono); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--navy); min-width: 120px; text-align: center; }

/* join form iframe container */
.join-embed{
  position: relative;
  min-height: 840px;
  border: 1px solid var(--line);
  background: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-md)), calc(100% - var(--cut-md)) 100%, 0 100%);
  overflow: hidden;
}
.join-embed iframe{
  width: 100%;
  height: 100%;
  min-height: 840px;
  border: 0;
  display: block;
}
.join-skeleton{
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  gap: 14px;
  background: var(--white);
  font-family: var(--f-mono);
  font-size: 0.82rem;
  color: var(--text-soft);
  text-align: center;
  padding: 24px;
}
.join-skeleton .sk-bar{
  width: 60%;
  height: 10px;
  background: linear-gradient(100deg, var(--line-soft) 30%, var(--tan-2) 50%, var(--line-soft) 70%);
  background-size: 200% 100%;
  animation: shimmer 1.2s linear infinite;
}
.join-fallback{
  margin-top: 14px;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--text-soft);
}
.join-fallback a{ color: var(--navy); }

/* =========================================================
   ABOUT - interactive LEARN purpose statement
   ========================================================= */

.purpose-section{ overflow: hidden; }
.purpose-head{ margin-bottom: clamp(38px, 6vw, 72px); }

.learn-experience{
  --learn-speed: 260ms;
  border-top: 1px solid var(--line);
}

.learn-word{
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
}

.learn-letter{
  appearance: none;
  min-width: 0;
  margin: 0;
  padding: clamp(24px, 3.2vw, 46px) 0 clamp(28px, 3.8vw, 54px);
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-family: var(--f-display);
  font-size: clamp(5.5rem, 15.6vw, 12.25rem);
  font-weight: 800;
  letter-spacing: -0.08em;
  line-height: 0.78;
  text-align: center;
  transition:
    background-color var(--learn-speed) ease,
    border-color var(--learn-speed) ease,
    color var(--learn-speed) ease,
    opacity var(--learn-speed) ease,
    transform var(--learn-speed) ease;
}
.learn-letter:last-child{ border-right: 0; }
.learn-word.has-active .learn-letter:not(.is-active){ opacity: 0.28; }
.learn-letter.is-active{
  background: var(--line-soft);
  border-bottom-color: var(--navy);
  color: var(--navy);
  transform: translateY(-5px);
}
.learn-letter:focus-visible{
  position: relative;
  z-index: 2;
  outline: 3px solid var(--navy);
  outline-offset: -3px;
}

.learn-details{
  display: grid;
  grid-template-rows: 0fr;
  border-bottom: 1px solid transparent;
  transition: grid-template-rows var(--learn-speed) ease, border-color var(--learn-speed) ease;
}
.learn-experience.has-active .learn-details{
  grid-template-rows: 1fr;
  border-bottom-color: var(--line);
}
.learn-details-inner{ overflow: hidden; }
.learn-detail{
  grid-template-columns: minmax(210px, 0.42fr) minmax(0, 1fr);
  gap: clamp(30px, 6vw, 88px);
  align-items: baseline;
  padding: clamp(28px, 4vw, 48px) 0 clamp(30px, 4.5vw, 54px);
}
.learn-detail:not([hidden]){
  display: grid;
  animation: learnDetailIn var(--learn-speed) ease both;
}
.learn-detail h2{ font-size: clamp(1.8rem, 3.1vw, 2.7rem); }
.learn-detail p{
  max-width: 62ch;
  color: var(--text-soft);
  font-size: clamp(1rem, 1.5vw, 1.16rem);
  line-height: 1.6;
}

@keyframes learnDetailIn{
  from{ opacity: 0; transform: translateY(8px); }
  to{ opacity: 1; transform: translateY(0); }
}

@media (max-width: 720px){
  .purpose-head{ margin-bottom: 34px; }
  .learn-letter{
    min-height: 96px;
    padding: 22px 0 25px;
    font-size: clamp(3.75rem, 19vw, 6.5rem);
    line-height: 0.8;
  }
  .learn-letter.is-active{ transform: translateY(-3px); }
  .learn-detail{
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 26px 0 30px;
  }
  .learn-detail h2{ font-size: 1.55rem; }
  .learn-detail p{ max-width: 48ch; font-size: 0.96rem; }
}

@media (max-width: 420px){
  .learn-letter{
    min-height: 78px;
    padding: 18px 0 20px;
    font-size: clamp(3.15rem, 18vw, 4.75rem);
  }
}

/* ---------- guest-speaker logo bubbles ---------- */
.logo-bubbles{
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
  max-width: 1132px;
  margin-top: 38px;
  margin-inline: auto;
}
.logo-bubble{
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  aspect-ratio: 212 / 118;
  padding: 20px 26px;
  background: var(--white);
  border: 1px solid var(--line);
  overflow: hidden;
  /* signature facet cut, bottom-right */
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: transform .18s ease, border-color .18s ease;
}
.logo-bubble:hover{ transform: translateY(-3px); border-color: var(--navy); }
.logo-bubble img{
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}
/* text fallback when a logo image is missing */
.logo-bubble{
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--navy);
  text-align: center;
}
.logo-bubble--dark{ background: var(--navy); border-color: var(--line-on-navy); }
.logo-bubble--dark:hover{ border-color: var(--tan); }

@media (max-width: 960px){
  .logo-bubbles{ grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px){
  .logo-bubbles{ grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 28px; }
  .logo-bubble{
    padding: 12px 14px;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 11px), calc(100% - 11px) 100%, 0 100%);
  }
  .logo-bubble img{ max-width: 78%; max-height: 44px; }
}
@media (max-width: 420px){
  .logo-bubbles{ gap: 10px; }
  .logo-bubble{ padding: 10px 12px; }
  .logo-bubble img{ max-width: 74%; max-height: 36px; }
}