/* sections.css – content sections */

.sec {
  padding: clamp(60px, 9vh, 120px) 0;
  border-bottom: 1px solid var(--line);
}

.accent { color: var(--accent); }
em { color: var(--accent); font-style: italic; }
strong { color: var(--fg); font-weight: 600; }

/* SectionHead */
.sec-head {
  margin-bottom: clamp(32px, 5vh, 64px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sec-head__top {
  display: flex;
  align-items: center;
  gap: 14px;
}
.sec-head__num {
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.05em;
}
.sec-head__label {
  font-size: 11px;
  color: var(--fg-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--line-2);
}
.sec-head__rule {
  flex: 1;
  border-top: 1px dashed var(--line-2);
}
.sec-head__title {
  font-size: clamp(36px, 5vw, 64px);
  margin: 0;
  max-width: 14ch;
  text-wrap: balance;
}
.sec-head__sub {
  font-size: clamp(15px, 1.3vw, 17px);
  color: var(--fg-2);
  max-width: 56ch;
  margin: 0;
  text-wrap: pretty;
}

/* About */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.about__lead {
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.55;
  color: var(--fg-2);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.about__lead p { margin: 0; text-wrap: pretty; }

.about__phases {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 16px;
  align-items: stretch;
}
.phase {
  border: 1px solid var(--line-2);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-2);
  transition: all 0.18s;
}
.phase:hover {
  border-color: var(--accent);
  background: var(--bg-3);
}
.phase__day {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.phase__name {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.phase__desc {
  font-size: 13px;
  color: var(--fg-3);
  line-height: 1.4;
}
.phase__arrow {
  align-self: center;
  color: var(--fg-3);
  font-size: 20px;
}

@media (max-width: 820px) {
  .about__grid { grid-template-columns: 1fr; gap: 32px; }
  .about__phases { grid-template-columns: 1fr; }
  .phase__arrow { transform: rotate(90deg); justify-self: center; }
}

/* Schedule – cards */
.sched-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.sched-card {
  border: 1px solid var(--line-2);
  padding: 28px 24px;
  background: var(--bg-2);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: all 0.2s;
  position: relative;
}
.sched-card:hover {
  border-color: var(--accent);
  background: var(--bg-3);
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--accent);
}
.sched-card__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--line-2);
}
.sched-card__day {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.sched-card__day-name {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.sched-card__date {
  font-size: 13px;
  color: var(--fg-3);
}
.sched-card__label {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.sched-card__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.sched-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  align-items: start;
}
.sched-item__time {
  font-size: 12px;
  color: var(--fg-3);
  padding-top: 2px;
}
.sched-item__name {
  font-size: 14px;
  font-weight: 500;
}
.sched-item__desc {
  font-size: 13px;
  color: var(--fg-3);
  margin-top: 2px;
  line-height: 1.4;
}

@media (max-width: 880px) {
  .sched-cards { grid-template-columns: 1fr; }
  .sched-item { grid-template-columns: 90px 1fr; }
}

/* Talks */
.talks__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.talks__lead { font-size: clamp(16px, 1.4vw, 19px); color: var(--fg-2); line-height: 1.5; display: flex; flex-direction: column; gap: 16px; align-items: start; }
.talks__lead p { margin: 0; text-wrap: pretty; }

@media (max-width: 820px) {
  .talks__grid { grid-template-columns: 1fr; gap: 32px; }
}

/* Hackathon */
.hack__grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 48px; align-items: start; }
.hack__col { display: flex; flex-direction: column; gap: 28px; }
.hack__step {
  display: grid;
  grid-template-columns: 160px 1fr;
  grid-template-rows: auto auto;
  column-gap: 24px;
  row-gap: 4px;
  padding-bottom: 24px;
  border-bottom: 1px dashed var(--line-2);
}
.hack__step:last-child { border-bottom: 0; padding-bottom: 0; }
.hack__step-time { font-size: 12px; color: var(--accent); letter-spacing: 0.05em; padding-top: 6px; grid-row: 1 / 3; }
.hack__step-name { font-size: 22px; font-weight: 500; letter-spacing: -0.01em; }
.hack__step p { color: var(--fg-2); margin: 0; font-size: 15px; line-height: 1.5; }

.hack__output { border: 1px solid var(--line-2); padding: 28px 24px; background: var(--bg-2); display: flex; flex-direction: column; gap: 14px; }
.hack__output-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.hack__output-list li {
  font-size: 15px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  font-family: var(--font-mono);
  color: var(--fg-2);
}
/*.hack__output-list li:last-child { border-bottom: 0; color: var(--accent); }*/
.hack__output-list li::before { content: "→ "; color: var(--fg-3); margin-right: 4px; }
.hack__rule { font-size: 11px; color: var(--fg-3); margin-top: 8px; padding-top: 14px; border-top: 1px solid var(--line); }

@media (max-width: 820px) {
  .hack__grid { grid-template-columns: 1fr; }
  .hack__step { grid-template-columns: 1fr; grid-template-rows: auto auto auto; }
  .hack__step-time { grid-row: 1; padding-top: 0; }
}

/* Info */
.info__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-2);
}
.info-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--line-2);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  padding-right: 24px;
}
.info-item:nth-child(odd) { padding-right: 24px; border-right: 1px solid var(--line-2); padding-left: 0; }
.info-item:nth-child(even) { padding-left: 24px; }
.info-item__k { color: var(--accent); font-size: 13px; letter-spacing: 0.02em; }
.info-item__v { color: var(--fg-2); font-size: 15px; line-height: 1.5; text-wrap: pretty; }

@media (max-width: 820px) {
  .info__grid { grid-template-columns: 1fr; }
  .info-item, .info-item:nth-child(odd), .info-item:nth-child(even) {
    grid-template-columns: 1fr; gap: 6px; padding: 20px 0; border-right: 0;
  }
}

/* FAQ */
.faq__list { display: flex; flex-direction: column; border-top: 1px solid var(--line-2); }
.faq-item { border-bottom: 1px solid var(--line-2); }
.faq-item__q {
  width: 100%;
  display: grid;
  grid-template-columns: 50px 1fr 30px;
  gap: 16px;
  padding: 22px 4px;
  background: transparent;
  border: 0;
  text-align: left;
  align-items: baseline;
  color: var(--fg);
  transition: color 0.15s;
}
.faq-item__q:hover { color: var(--accent); }
.faq-item__num { font-size: 12px; color: var(--fg-3); }
.faq-item__q:hover .faq-item__num { color: var(--accent); }
.faq-item__q-text { font-size: clamp(16px, 1.4vw, 20px); font-weight: 500; letter-spacing: -0.01em; text-wrap: balance; }
.faq-item__chev { font-size: 22px; color: var(--fg-3); text-align: right; transition: color 0.15s, transform 0.2s; }
.faq-item.is-open .faq-item__chev { color: var(--accent); }
.faq-item__a-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}
.faq-item.is-open .faq-item__a-wrap { grid-template-rows: 1fr; }
.faq-item__a {
  overflow: hidden;
  font-size: 15px;
  color: var(--fg-2);
  line-height: 1.6;
  padding: 0 0 0 66px;
  max-width: 70ch;
}
.faq-item.is-open .faq-item__a { padding-bottom: 24px; }

/* Footer */
.footer {
  padding: 60px 0 32px;
  border-top: 1px solid var(--line);
  position: relative;
  z-index: 1;
}
.footer__top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  margin-bottom: 60px;
}
.footer__brand-name { font-size: clamp(48px, 6vw, 88px); line-height: 0.9; }
.footer__brand-edition { font-size: 12px; color: var(--fg-3); margin-top: 14px; letter-spacing: 0.05em; }
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer__col { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--fg-2); }
.footer__col a:hover { color: var(--accent); }
.footer__col .eyebrow { margin-bottom: 6px; }
.footer__quiet { color: var(--fg-3); font-size: 13px; }

.footer__col--qr { align-items: flex-start; scroll-margin-top: 80px; }
.footer__qr-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}
.footer__qr-sub {
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.02em;
}
.footer__qr-trigger {
  background: transparent;
  border: 0;
  padding: 0;
  margin: 2px 0 0;
  cursor: zoom-in;
  display: block;
  width: 100%;
  max-width: 165px;
  -webkit-tap-highlight-color: transparent;
}
.footer__qr {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.18s ease;
}
.footer__qr-trigger:hover .footer__qr,
.footer__qr-trigger:focus-visible .footer__qr { transform: scale(1.04); }
.footer__qr-trigger:focus { outline: none; }
.footer__qr-trigger:focus-visible { outline: 1px dashed var(--accent); outline-offset: 4px; }
html[data-theme="dark"] .footer__qr { filter: invert(1); }

@media (max-width: 820px) {
  .footer__top { grid-template-columns: 1fr; gap: 32px; }
  .footer__cols { grid-template-columns: 1fr; gap: 24px; }
}

/* Footer logos */
.footer__logos {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding: 48px 0 72px;
  margin-top: 8px;
  border-top: 1px solid var(--line);
}
.footer__logos-label { text-align: center; }
.footer__logos-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(56px, 8vw, 112px);
}
.footer__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 108px;
  opacity: 0.85;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.footer__logo--ask  { height: 130px; }
.footer__logo--knai { height: 97px; }
.footer__logo:hover {
  opacity: 1;
  transform: translateY(-1px);
}
.footer__logo img {
  display: block;
  height: 100%;
  width: auto;
  min-width: 120px;
  max-width: 480px;
  object-fit: contain;
  flex: 0 0 auto;
}
html[data-theme="dark"] .footer__logo img { filter: invert(1); }

@media (max-width: 720px) {
  .footer__logo { height: 79px; }
  .footer__logos { padding: 36px 0 48px; }
}