/* Architecture 2.0 · IISWC 2026. Static, responsive styles. */
:root {
  --red:#972b34;
  --red-dark:#79222a;
  --ink:#202024;
  --muted:#5e5d63;
  --line:#e6e1df;
  --paper:#faf8f7;
  --font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace
}

* {
  box-sizing:border-box
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:100px
}
body {
  margin:0;
  font:16px/1.7 var(--font);
  color:var(--ink);
  background:#fff
}
a {
  color:var(--red);
  text-decoration:none
}
a:hover {
  color:var(--red-dark)
}
a:focus-visible {
  outline:3px solid var(--red);
  outline-offset:5px
}
h1,h2,h3,p {
  margin:0
}
h1,h2,h3 {
  line-height:1.15
}
h2 {
  font-size:clamp(2rem,3.5vw,2.65rem);
  font-weight:600;
  letter-spacing:-.04em
}
h3 {
  font-size:1.15rem
}
img {
  max-width:100%;
  display:block
}
.container {
  width:min(1120px,calc(100% - 64px));
  margin:auto
}
.navbar {
  position:sticky;
  top:0;
  z-index:10;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--line)
}
.nav-inner {
  width:min(1200px,calc(100% - 64px));
  min-height:76px;
  margin:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px
}
.brand {
  color:var(--ink);
  font-size:1.2rem;
  font-weight:700;
  letter-spacing:-.04em;
  white-space:nowrap
}
.brand span {
  color:var(--red)
}
.nav-links {
  display:flex;
  gap:32px
}
.nav-links a {
  font-size:.95rem;
  font-weight:500;
  color:var(--muted)
}
.nav-links a:hover {
  color:var(--red)
}
.hero {
  text-align:center;
  padding:78px 0 68px;
  background:radial-gradient(ellipse at 20% 0%,#f9e6e7,transparent 55%),linear-gradient(130deg,#fff,#faf8f7);
  border-bottom:1px solid var(--line)
}
.eyebrow,.section-label {
  color:var(--red);
  font-family:var(--mono);
  font-size:.875rem;
  letter-spacing:.065em;
  text-transform:uppercase
}
.hero h1 {
  font-size:clamp(3.1rem,7vw,5.7rem);
  font-weight:700;
  letter-spacing:-.065em;
  margin:24px 0 20px
}
.hero h1 span {
  color:var(--red)
}
.hero-subtitle {
  font-size:clamp(1.25rem,2.2vw,1.6rem);
  line-height:1.5;
  color:#434248
}
.hero-date {
  margin:24px auto 0;
  color:var(--muted);
  font-size:1rem
}
.hero-date span {
  margin:0 8px
}
.hero-actions {
  display:flex;
  justify-content:center;
  gap:12px;
  margin-top:30px
}
.button {
  min-height:48px;
  display:inline-flex;
  gap:28px;
  align-items:center;
  justify-content:center;
  padding:11px 22px;
  border:1px solid var(--line);
  border-radius:5px;
  font-weight:500
}
.primary {
  background:var(--red);
  border-color:var(--red);
  color:#fff
}
.primary:hover {
  background:var(--red-dark);
  color:#fff
}
.secondary {
  background:#fff;
  color:var(--ink)
}
.section {
  padding:76px 0
}
.section-label {
  margin-bottom:15px
}
.about-layout {
  display:grid;
  grid-template-columns:1fr 1.65fr;
  gap:70px
}
.about-copy {
  color:var(--muted);
  font-size:1.0625rem
}
.about-copy p+p {
  margin-top:16px
}
.about-copy strong {
  color:var(--ink);
  font-weight:600
}
.event-details {
  display:grid;
  grid-template-columns:1fr 1fr;
  margin-top:38px;
  padding-top:28px;
  border-top:1px solid var(--line);
  gap:36px
}
.event-details>div {
  display:flex;
  flex-direction:column
}
.detail-label {
  color:var(--red);
  font-size:.875rem;
  margin-bottom:5px;
  font-weight:600
}
.event-details strong {
  font-weight:600;
  font-size:1.0625rem
}
.event-details span:not(.detail-label),.event-details a {
  font-size:.9375rem;
  color:var(--muted)
}
.event-details a:hover {
  text-decoration:underline;
  color:var(--red)
}
.schedule-section {
  background:var(--paper);
  border-block:1px solid var(--line)
}
.section-heading {
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px
}
.status {
  border:1px solid #d9c4c6;
  border-radius:4px;
  color:var(--red);
  background:#fff;
  font-size:.875rem;
  padding:6px 12px;
  white-space:nowrap
}
.schedule-note {
  font-size:.9375rem;
  color:var(--muted);
  margin-bottom:22px
}
.schedule {
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  border:1px solid var(--line);
  border-radius:8px;
  overflow:hidden;
  background:#fff;
  text-align:left
}
.schedule thead th {
  font-size:.875rem;
  font-weight:500;
  color:var(--muted);
  padding:15px 24px;
  border-bottom:1px solid var(--line);
  background:#f2efed
}
.schedule tbody td,.schedule tbody th {
  padding:22px 24px;
  border-bottom:1px solid var(--line)
}
.schedule tbody th {
  font-weight:600;
  font-size:1.125rem
}
.schedule tbody tr:last-child>* {
  border-bottom:0
}
.time {
  font-family:var(--mono);
  font-size:.9375rem;
  white-space:nowrap;
  width:23%;
  border-left:3px solid transparent
}
.speaker {
  color:var(--muted);
  width:26%
}
.opening .time {
  border-left-color:#ba9350
}
.knowledge .time {
  border-left-color:#6d9277
}
.keynote .time,.design .time {
  border-left-color:var(--red)
}
.evaluation .time,.orchestration .time,.kernel .time {
  border-left-color:#6e8dae
}
.keynote {
  background:#fff5f4
}
.break {
  background:#f2f1f0
}
.break th {
  color:var(--muted)
}
.tbd {
  display:inline-block;
  vertical-align:middle;
  margin-left:8px;
  font-family:var(--mono);
  font-weight:400;
  font-size:.8125rem;
  border:1px solid #d9babc;
  border-radius:4px;
  padding:2px 7px;
  color:var(--red)
}
.keynote-note {
  color:var(--muted);
  font-size:.875rem;
  margin-top:17px
}
.resource-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 36px
}
.resource {
  padding:24px 0 28px;
  border-top:1px solid var(--line);
  color:var(--ink)
}
.resource-type {
  display:flex;
  justify-content:space-between;
  color:var(--red);
  font-size:.875rem;
  margin-bottom:12px
}
.resource h3 {
  font-weight:600;
  line-height:1.4
}
.resource p {
  color:var(--muted);
  margin-top:8px;
  font-size:.9375rem
}
.resource:hover h3 {
  text-decoration:underline;
  text-underline-offset:4px
}
.team-section {
  background:var(--paper);
  border-top:1px solid var(--line)
}
.team-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:40px 32px;
  margin-top:40px
}
.person {
  text-align:center
}
.person a {
  color:var(--ink);
  display:inline-block
}
.person a:hover h3 {
  color:var(--red)
}
.person img {
  width:144px;
  height:144px;
  object-fit:cover;
  border-radius:50%;
  margin:0 auto 18px;
  border:4px solid #fff;
  box-shadow:0 0 0 1px var(--line)
}
.person h3 {
  font-size:1.125rem;
  line-height:1.4;
  font-weight:600
}
.person p {
  color:var(--muted);
  font-size:.9375rem;
  margin-top:5px
}
footer {
  border-top:1px solid var(--line);
  padding:38px 0
}
.footer-inner {
  display:flex;
  justify-content:space-between;
  gap:30px;
  align-items:center
}
.footer-inner p {
  margin-top:10px;
  font-size:.875rem;
  color:var(--muted)
}
.skip-link {
  position:fixed;
  top:-100px;
  left:16px;
  z-index:30;
  background:#fff;
  padding:8px 16px
}
.skip-link:focus {
  top:10px
}
.sr-only {
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0
}

@media(max-width:760px) {
  .container,.nav-inner {
    width:calc(100% - 40px)
  }
  .nav-inner {
    min-height:92px;
    flex-direction:column;
    justify-content:center;
    gap:7px;
    padding:10px 0
  }
  .nav-links {
    gap:24px
  }
  .nav-links a {
    font-size:.875rem
  }
  .hero {
    padding:52px 0 46px
  }
  .eyebrow {
    font-size:.8125rem
  }
  .hero h1 {
    margin-top:20px
  }
  .hero-date {
    max-width:320px
  }
  .hero-date span {
    display:none
  }
  .hero-actions {
    gap:10px
  }
  .button {
    padding:10px 16px;
    gap:16px;
    font-size:.9375rem
  }
  .section {
    padding:48px 0
  }
  .about-layout {
    grid-template-columns:1fr;
    gap:24px
  }
  .about-layout h2 br {
    display:none
  }
  .event-details {
    grid-template-columns:1fr;
    gap:22px;
    margin-top:28px
  }
  .section-heading {
    align-items:start;
    gap:12px
  }
  .status {
    white-space:normal;
    text-align:center;
    font-size:.8125rem;
    max-width:130px
  }
  .schedule thead {
    position:absolute;
    width:1px;
    height:1px;
    overflow:hidden;
    clip:rect(0,0,0,0)
  }
  .schedule,.schedule tbody {
    display:block
  }
  .schedule tbody tr {
    display:grid;
    grid-template-columns:1fr;
    position:relative;
    padding:18px 20px 18px 22px;
    border-bottom:1px solid var(--line);
    gap:5px
  }
  .schedule tbody tr:last-child {
    border-bottom:0
  }
  .schedule tbody td,.schedule tbody th {
    display:block;
    width:auto;
    border-bottom:0;
    padding:0
  }
  .schedule .time {
    border-left:0;
    font-size:.875rem;
    color:var(--muted)
  }
  .schedule tr::before {
    content:'';
    position:absolute;
    top:0;
    bottom:0;
    left:0;
    width:3px;
    background:#6e8dae
  }
  .schedule tr.opening::before {
    background:#ba9350
  }
  .schedule tr.knowledge::before {
    background:#6d9277
  }
  .schedule tr.keynote::before,.schedule tr.design::before {
    background:var(--red)
  }
  .schedule tr.break::before {
    background:#c6c3c0
  }
  .speaker {
    font-size:.9375rem
  }
  .resource-grid {
    grid-template-columns:1fr
  }
  .team-grid {
    grid-template-columns:repeat(2,1fr);
    gap:32px 12px
  }
  .person img {
    width:116px;
    height:116px
  }
  .person h3 {
    font-size:1rem
  }
  .person p {
    font-size:.875rem
  }
  .footer-inner {
    flex-direction:column;
    align-items:start
  }
  .hero h1 {
    white-space:normal
  }
  .brand {
    font-size:1.125rem
  }
  
}

@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto
  }
  
}

@media print {
  .navbar,.hero-actions,.skip-link {
    display:none
  }
  .hero {
    padding:24px 0;
    background:white
  }
  .section {
    padding:24px 0
  }
  .container {
    width:100%
  }
  body {
    font-size:12px
  }
  .schedule {
    break-inside:avoid
  }
  a {
    color:inherit
  }
  .team-grid {
    grid-template-columns:repeat(3,1fr)
  }
  
}



/* Grouped reading list; each resource keeps a direct source link. */
.resource-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 36px 56px;
  align-items: start;
}
.resource-group {
  border-top: 2px solid var(--line);
  padding-top: 22px;
}
.resource-group h3 {
  color: var(--red);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
}
.resource-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}
.resource-list li + li {
  margin-top: 18px;
}
.resource-list a {
  display: inline-block;
  color: var(--ink);
  font-weight: 500;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.resource-list a:hover {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.resource-meta {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: .875rem;
  line-height: 1.5;
}
@media (max-width: 760px) {
  .resource-groups {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }
}