/* RevoU x ITB Open House — campus-led editorial direction. */
:root { color-scheme: light; }

html { scroll-behavior: smooth; }
html, body { margin: 0; max-width: 100%; }

.ddm-page {
  --ink: #122b3d;
  --navy: #0d2c45;
  --blue: #0067a7;
  --blue-soft: #e8f0f2;
  --paper: #f4f1e9;
  --white: #fff;
  --line: #c9d1ce;
  --muted: #526675;
  --yellow: #f7d21e;
  --font-display: 'IBM Plex Sans', Arial, sans-serif;
  --font-body: 'Inter', Arial, sans-serif;
  --side: clamp(1.25rem, 4vw, 4rem);
  overflow-x: clip;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.ddm-page *, .ddm-page *::before, .ddm-page *::after { box-sizing: border-box; }
.ddm-page img { display: block; max-width: 100%; }
.ddm-page a { color: inherit; text-decoration: none; }
.ddm-container { width: min(100%, 1440px); margin-inline: auto; padding-inline: var(--side); }
.ddm-section { padding-block: clamp(4.75rem, 8vw, 8.5rem); }
.ddm-soft { background: var(--blue-soft); }

.ddm-eyebrow, .ddm-kicker, .ddm-tag {
  display: block;
  color: var(--blue);
  font-size: .75rem;
  font-weight: 700;
  line-height: 1.4;
}
.ddm-eyebrow { margin-bottom: 1rem; }
.ddm-kicker { margin-bottom: 1.25rem; }
.ddm-h1, .ddm-h2, .ddm-h3, .ddm-page h4 {
  font-family: var(--font-display);
  letter-spacing: -.045em;
}
.ddm-h1 {
  max-width: 15ch;
  margin: 0 0 1.5rem;
  font-size: clamp(2.8rem, 4.2vw, 4.6rem);
  font-weight: 600;
  line-height: .95;
}
.ddm-h1__line { display: block; }
.ddm-h1__accent { color: var(--blue); }
.ddm-h2 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2.25rem, 4vw, 4.6rem);
  font-weight: 600;
  line-height: 1;
  text-wrap: balance;
}
.ddm-h2--wide { max-width: 24ch; }
.ddm-h3 { margin: 0; font-size: clamp(1.25rem, 1.5vw, 1.55rem); line-height: 1.22; }
.ddm-lead { max-width: 48ch; margin: 0 0 1.75rem; color: var(--muted); font-size: clamp(1rem, 1.2vw, 1.15rem); line-height: 1.7; }
.ddm-lead b { color: var(--ink); }
.ddm-section-head { max-width: 760px; margin-bottom: clamp(2.6rem, 5vw, 4.8rem); }

.ddm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: .85rem 1.5rem;
  border: 1px solid transparent;
  border-radius: 2px;
  background: var(--yellow);
  color: var(--ink) !important;
  font: 800 .94rem/1.2 var(--font-body);
  text-align: center;
  transition: background-color .2s ease, transform .2s ease;
}
.ddm-btn:hover { background: #ffe469; transform: translateY(-2px); }
.ddm-btn:focus-visible, .ddm-page a:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.ddm-btn-row { display: flex; flex-wrap: wrap; gap: 1rem; }

/* Quiet navigation so the first impression belongs to the campus. */
.ddm-nav { position: sticky; top: 0; z-index: 40; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.ddm-nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 76px; }
.ddm-nav__logo img { width: clamp(170px, 19vw, 232px); height: auto; }
.ddm-nav__cta { min-height: 42px; padding: .65rem 1.15rem; background: var(--navy); color: #fff !important; font-size: .84rem; }
.ddm-nav__cta:hover { background: var(--blue); }

/* Hero: monumental type beside one unbroken architectural image. */
.ddm-cover { background: var(--paper); }
/* Copy aligns with the 1440px content column; the photo bleeds to the right viewport edge. */
.ddm-cover__inner {
  display: grid; grid-template-columns: minmax(0, .9fr) minmax(440px, 1.1fr);
  width: 100%; min-height: clamp(560px, calc(100svh - 77px), 720px);
  padding-left: max(var(--side), calc((100% - 1440px) / 2 + var(--side))); padding-right: 0;
}
.ddm-cover__copy { position: relative; z-index: 2; align-self: center; padding: clamp(2.5rem, 4vw, 4rem) clamp(2rem, 3.5vw, 4rem) clamp(2.5rem, 3.5vw, 3.5rem) 0; }
.ddm-cover__visual { position: relative; min-height: 100%; overflow: hidden; background: #bcd4dc; }
.ddm-badge-oh img { width: clamp(126px, 12vw, 170px); height: auto; margin-bottom: clamp(1rem, 2vw, 1.4rem); }
.ddm-cover__visual::before {
  content: ''; position: absolute; z-index: 2; inset: 0;
  background: linear-gradient(90deg, rgba(13,44,69,.2), transparent 34%), linear-gradient(0deg, rgba(13,44,69,.18), transparent 42%);
  pointer-events: none;
}
.ddm-cover__bldg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 50% 30%; filter: saturate(.86) contrast(1.04); }
.ddm-eventcard { margin-top: clamp(1.75rem, 2.6vw, 2.75rem); padding-top: 1.3rem; border-top: 1px solid var(--line); }
.ddm-eventcard__date { margin: 0 0 .35rem; font-size: .91rem; font-weight: 800; }
.ddm-eventcard__time { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; margin: 0; color: var(--muted); font-size: .8rem; font-weight: 600; }
.ddm-eventcard__time img { width: 58px; height: auto; }
.ddm-vr { width: 1px; height: .8rem; margin-inline: .18rem; background: var(--line); }

/* Institution marker — typographic, compact, and adjacent to the hero. */
.ddm-itb {
  position: relative; overflow: hidden; isolation: isolate;
  padding-block: clamp(2rem, 3.5vw, 3rem); color: #fff;
  background: linear-gradient(110deg, #081d2e 0%, var(--navy) 45%, var(--blue) 100%);
  border-bottom: 4px solid var(--yellow);
}
/* Rising bars nod to the "data driven" theme; they grow out of the yellow rule. */
.ddm-itb__bars { position: absolute; z-index: -1; right: var(--side); bottom: 0; width: clamp(110px, 11vw, 150px); height: auto; }
.ddm-itb .ddm-itb__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-right: calc(var(--side) + clamp(130px, 13vw, 180px)); }
.ddm-itb__line { margin: 0 0 .35rem; color: #8fc6ea; font-size: clamp(.8rem, 1vw, .92rem); font-weight: 600; }
.ddm-itb__name { margin: 0; font-family: var(--font-display); font-size: clamp(1.9rem, 3.4vw, 3.2rem); font-weight: 700; letter-spacing: -.035em; line-height: 1; text-transform: uppercase; }
.ddm-itb__rank { display: flex; flex: none; align-items: center; gap: 1rem; }
.ddm-itb__num {
  display: inline-flex; align-items: baseline; justify-content: center; min-width: 4.4rem; padding: .55rem .8rem .5rem;
  background: #fff; color: var(--navy); font: 700 clamp(2rem, 3vw, 2.6rem)/1 var(--font-display); letter-spacing: -.05em;
  box-shadow: 6px 6px 0 var(--yellow);
}
.ddm-itb__hash { margin-right: .05em; color: var(--blue); font-size: .6em; }
.ddm-itb__caption { color: #fff; font-size: clamp(.9rem, 1.1vw, 1.05rem); font-weight: 700; line-height: 1.3; }

/* Outcomes form a staggered field rather than another numbered sequence. */
.ddm-panel--white { background: transparent; }
.ddm-specs { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.ddm-spec { grid-column: span 5; min-height: 150px; padding: 1.6rem 1.5rem 2rem 0; border-bottom: 1px solid var(--line); }
.ddm-spec:nth-child(even) { grid-column: 7 / span 6; padding-left: clamp(1.5rem, 3vw, 3rem); border-left: 1px solid var(--line); }
.ddm-spec h3 { max-width: 25ch; margin: 0; font: 600 clamp(1.4rem, 2vw, 2rem)/1.2 var(--font-display); letter-spacing: -.035em; }
.ddm-spec__sub { display: block; margin-top: .6rem; color: var(--muted); font: 400 .88rem/1.6 var(--font-body); letter-spacing: 0; }
.ddm-spec--access, .ddm-spec--access:nth-child(odd) {
  grid-column: 1 / -1; min-height: 0; margin-top: clamp(1.5rem, 3vw, 2.5rem);
  padding: clamp(1.4rem, 2.5vw, 2rem) clamp(1.4rem, 3vw, 2.5rem);
  border: 0; border-left: 4px solid var(--yellow); color: #fff; background: var(--navy);
}
.ddm-spec--access h3 { max-width: none; }
.ddm-spec__label { display: block; margin-bottom: .5rem; color: var(--yellow); font-size: .75rem; font-weight: 700; line-height: 1.4; }

/* Agenda is the one explicit sequence on the page. */
#agenda { color: #fff; background: var(--navy); }
#agenda .ddm-panel { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: clamp(3rem, 8vw, 9rem); }
#agenda .ddm-section-head { position: sticky; top: 122px; align-self: start; margin: 0; }
#agenda .ddm-eyebrow { color: var(--yellow); }
#agenda .ddm-h2, #agenda .ddm-h3 { color: #fff; }
.ddm-list { border-top: 1px solid rgba(255,255,255,.42); }
.ddm-item { display: grid; grid-template-columns: 2.6rem minmax(0, 1fr); gap: .45rem 1rem; padding: 1.7rem 0; border-bottom: 1px solid rgba(255,255,255,.25); }
.ddm-idx { color: var(--yellow); font-size: .78rem; font-weight: 800; letter-spacing: .08em; line-height: 1.5; }
.ddm-item .ddm-idx { grid-row: 1 / span 2; }
.ddm-item .ddm-h3 { font-size: clamp(1.15rem, 1.55vw, 1.5rem); letter-spacing: -.025em; }
.ddm-item p { max-width: 55ch; margin: 0; color: #b9cdd8; font-size: .91rem; line-height: 1.6; }

/* Portraits break the page grid and carry this chapter visually. */
.ddm-people { overflow: hidden; }
.ddm-people { padding-block: clamp(3.5rem, 6vw, 5.5rem); }
.ddm-people .ddm-section-head { margin-bottom: clamp(2rem, 3.5vw, 3rem); }
.ddm-speakers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 4rem); }
.ddm-speaker { display: grid; grid-template-columns: clamp(120px, 11vw, 160px) minmax(0, 1fr); align-items: center; gap: clamp(1rem, 2vw, 1.75rem); }
.ddm-speaker__avatar { overflow: hidden; aspect-ratio: 1 / 1; background: #d7e4e8; }
.ddm-speaker__avatar img { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(.82) contrast(1.03); }
.ddm-speaker h4 { margin: 0 0 .5rem; font-size: clamp(1.25rem, 1.6vw, 1.6rem); line-height: 1.1; }
.ddm-tag { display: inline-block; margin-bottom: 1rem; padding-bottom: .25rem; border-bottom: 2px solid var(--blue); }
.ddm-speaker .role { margin: 0 0 .75rem; color: var(--muted); font-size: .86rem; line-height: 1.55; }
.ddm-speaker .org { margin: 0; color: var(--blue); font-size: .83rem; font-weight: 800; }

/* Audience chapter stays intentionally spare. */
.ddm-cols { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--ink); }
.ddm-col { padding: 1.8rem clamp(1.25rem, 2.4vw, 2.6rem) 0 0; }
.ddm-col + .ddm-col { padding-left: clamp(1.25rem, 2.4vw, 2.6rem); border-left: 1px solid var(--line); }
.ddm-col .ddm-h3 { max-width: 22ch; margin-bottom: 1rem; }
.ddm-col p { max-width: 33ch; margin: 0; color: var(--muted); font-size: .91rem; }

/* Closing invitation pairs a large date with the campus, rather than repeating the hero. */
.ddm-final {
  position: relative; isolation: isolate; overflow: hidden; display: grid;
  grid-template-columns: minmax(0, 1fr); align-items: end;
  min-height: 420px; padding: clamp(2.5rem, 5vw, 5rem); color: #fff; background: var(--navy);
}
.ddm-final::before { content: ''; position: absolute; z-index: -2; inset: 0; background: url('images/endcard.webp') center 44% / cover no-repeat; }
.ddm-final::after { content: ''; position: absolute; z-index: -1; inset: 0; background: linear-gradient(90deg, rgba(9,35,54,.96), rgba(9,35,54,.79) 62%, rgba(9,35,54,.3)); }
.ddm-final__content { padding-bottom: .25rem; }
.ddm-final .ddm-h2 { max-width: 11ch; color: #fff; }
.ddm-final__highlight { color: var(--yellow); }
.ddm-final__meta { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem; max-width: 40rem; margin: 1.4rem 0 1.9rem; color: #e0ecf0; font-size: .78rem; font-weight: 700; }
.ddm-final__meta span { display: inline-flex; align-items: center; gap: .35rem; }
.ddm-final__meta img { width: 58px; height: auto; filter: brightness(0) invert(1); }

.ddm-foot { padding-block: 2.5rem; background: #fff; border-top: 1px solid var(--line); }
.ddm-foot__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.ddm-foot img { width: clamp(160px, 20vw, 220px); height: auto; }
.ddm-foot p { max-width: 54ch; margin: 0; color: var(--muted); font-size: .72rem; text-align: right; }

/* Only the hero enters; the reading experience below stays still. */
.ddm-cover .ddm-reveal { animation: ddm-enter .65s ease-out both; }
@keyframes ddm-enter { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

@media (max-width: 1050px) {
  .ddm-cover__inner { grid-template-columns: minmax(0, 1fr) minmax(360px, .9fr); }
}

@media (max-width: 800px) {
  .ddm-cover__inner { grid-template-columns: 1fr; min-height: 0; padding-inline: var(--side); }
  .ddm-cover__visual { margin-inline: calc(-1 * var(--side)); }
  .ddm-h1 { max-width: 14ch; font-size: clamp(3.3rem, 9vw, 5.2rem); }
  .ddm-itb .ddm-itb__inner { flex-direction: column; align-items: flex-start; gap: 1.4rem; padding-right: var(--side); }
  .ddm-itb__name { max-width: 13ch; }
  .ddm-itb__bars { width: 92px; opacity: .85; }
  #agenda .ddm-panel { grid-template-columns: 1fr; gap: 2.8rem; }
  #agenda .ddm-section-head { position: static; }
  .ddm-speakers { grid-template-columns: 1fr; }
  .ddm-speaker { grid-template-columns: 120px minmax(0, 1fr); }
  .ddm-cols { grid-template-columns: 1fr; }
  .ddm-col, .ddm-col + .ddm-col { padding: 1.6rem 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .ddm-final { align-content: end; min-height: 440px; }
}

@media (max-width: 560px) {
  .ddm-nav__inner { min-height: 66px; }
  .ddm-nav__logo img { width: 168px; }
  .ddm-nav__cta { padding-inline: .8rem; font-size: .76rem; }
  .ddm-h1 { font-size: clamp(2.8rem, 13vw, 4rem); }
  .ddm-eventcard { margin-top: 2.5rem; }
  .ddm-specs { grid-template-columns: 1fr; }
  .ddm-spec, .ddm-spec:nth-child(even) { grid-column: 1; min-height: 0; padding: 1.5rem 0; border-left: 0; }
  .ddm-spec--access, .ddm-spec--access:nth-child(odd) { padding: 1.4rem 1.25rem; border-left: 4px solid var(--yellow); }
  .ddm-speaker { grid-template-columns: 96px minmax(0, 1fr); gap: 1rem; }
  .ddm-speaker h4 { font-size: 1.2rem; }
  .ddm-final { min-height: 400px; padding: 2.3rem 1.4rem; }
  .ddm-final::after { background: rgba(9,35,54,.78); }
  .ddm-final__meta { gap: .35rem .6rem; }
  .ddm-sep { display: none !important; }
  .ddm-foot__inner { display: block; }
  .ddm-foot p { margin-top: 1.25rem; text-align: left; }
}

@media (max-width: 375px) {
  .ddm-nav__cta { display: none; }
  .ddm-speaker { grid-template-columns: 80px minmax(0, 1fr); }
  .ddm-itb__bars { width: 60px; opacity: .6; }
}

@media (max-width: 800px) {
  /* Scroll reveal: campus pinned behind the hero copy; the copy's white veil scrolls away
     and uncovers the building. --tools-h = height of any grid row below the photo (none here). */
  .ddm-cover { --nav-h: 77px; --stage: calc(100svh - var(--nav-h)); --tools-h: 0px; --bldg-h: 76%; }
  .ddm-cover__inner { display: grid; grid-template-columns: 1fr; }
  .ddm-cover__visual, .ddm-cover__copy { grid-area: 1 / 1; }
  .ddm-cover__visual {
    position: sticky; top: var(--nav-h); z-index: 0; align-self: start;
    height: var(--stage); aspect-ratio: auto; min-height: 0; overflow: hidden;
    background: linear-gradient(180deg, #eef4f5 0%, #bcd4dc 100%);
  }
  .ddm-cover__visual::before { display: none; }
  .ddm-cover__bldg { top: auto; bottom: 0; height: var(--bldg-h); object-position: 70% bottom; }
  .ddm-cover__copy {
    z-index: 1; padding: 2.75rem 0 4.5rem;
    margin-bottom: calc(var(--stage) * .76 - 5.5rem - var(--tools-h)); /* pin ends with the date just above the roof (photo has ~12% clear sky above the peaks) */
    background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,.93) 45%, rgba(255,255,255,.84) 88%, rgba(255,255,255,0) 100%);
    margin-inline: calc(-1 * var(--side)); padding-inline: var(--side); /* full-bleed veil */
  }
}
@media (max-width: 560px) {
  .ddm-cover { --nav-h: 67px; }
  .ddm-cover__copy { padding-block: 2.5rem 4.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ddm-page *, .ddm-page *::before, .ddm-page *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; }
}