/* ============================================
   КАПИТАЛИСТЫ — Conference Landing
   Light theme · Orange accent · Slash labels
   ============================================ */

:root {
  --bg: #ffffff;
  --bg-alt: #f4f4f2;
  --bg-dark: #0a0a0a;
  --bg-dark-2: #141414;
  --text: #0a0a0a;
  --text-muted: #6b6b6b;
  --text-inverse: #ffffff;
  --text-inverse-muted: #9a9a9a;
  --accent: #ff5a1f;
  --accent-hover: #ff4408;
  --border: #e6e6e3;
  --border-dark: #2a2a2a;

  --container: 1280px;
  --container-narrow: 880px;
  --pad: 24px;

  --font-display: "Unbounded", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --radius: 4px;
  --radius-lg: 8px;
}

/* ============ RESET ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, iframe { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 800; line-height: 1.05; letter-spacing: -0.02em; }
p { margin: 0; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ============ LAYOUT ============ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
}
.container--narrow { max-width: var(--container-narrow); }

.section {
  padding: 110px 0;
  position: relative;
}
.section--light { background: var(--bg); }
.section--alt   { background: var(--bg-alt); }
.section--dark  { background: var(--bg-dark); color: var(--text-inverse); }

.section__head {
  margin-bottom: 56px;
  max-width: 720px;
}
.section__title {
  font-size: clamp(36px, 5vw, 64px);
  text-transform: uppercase;
}
.section__title--light { color: var(--text-inverse); }
.section__lead {
  margin-top: 18px;
  font-size: 18px;
  color: var(--text-muted);
  max-width: 600px;
}

.kicker {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.kicker--light { color: var(--accent); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 28px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border: 2px solid transparent;
  border-radius: var(--radius);
  transition: all 0.18s ease;
  white-space: nowrap;
}
.btn--lg { height: 60px; padding: 0 36px; font-size: 16px; }

.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.btn--ghost:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

.btn--dark {
  background: var(--bg-dark);
  color: #fff;
  border-color: var(--bg-dark);
}
.btn--dark:hover { background: var(--accent); border-color: var(--accent); }

/* ============ HEADER ============ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dark);
  color: #fff;
}
.header__inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 32px;
}
.header__logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.header__nav {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.header__nav a {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: color 0.15s;
}
.header__nav a:hover { color: var(--accent); }
.header__cta { height: 42px; padding: 0 22px; font-size: 13px; }
.header__burger {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  margin-left: auto;
}
.header__burger span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  transition: all 0.2s;
}

/* ============ HERO ============ */
.hero {
  background: var(--bg-dark);
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}
.hero__banner {
  display: block;
  width: 100%;
  height: auto;
  max-width: 1600px;
  margin: 0 auto;
  background-color: #0a0a0a;
}
.hero__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding: 28px var(--pad);
  border-top: 1px solid var(--border-dark);
}
.hero__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-body);
  color: #fff;
  flex-wrap: wrap;
}
.hero__date {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
}
.hero__sep { color: var(--accent); font-weight: 700; }
.hero__place {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.hero__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

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

/* ============ AUDIENCE CARDS ============ */
.card-aud {
  padding: 36px 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.25s ease;
}
.card-aud:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.card-aud__num {
  display: block;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 24px;
}
.card-aud h3 {
  font-size: 24px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.card-aud p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ============ TOPIC CARDS ============ */
.card-topic {
  padding: 48px 40px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--accent);
  transition: all 0.25s ease;
}
.card-topic:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.06);
}
.card-topic__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 22px;
}
.card-topic h3 {
  font-size: 28px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.card-topic p {
  color: var(--text-muted);
  font-size: 16px;
}

/* ============ SPEAKERS ============ */
.speakers__grid { gap: 28px; }
.card-speaker {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}
.card-speaker:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}
.card-speaker__photo {
  aspect-ratio: 4/5;
  background: linear-gradient(180deg, #1a1a1a 0%, #0a0a0a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.card-speaker__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}
.card-speaker__photo--duo {
  display: flex;
}
.card-speaker__photo--duo img {
  position: relative;
  width: 50%;
}
.card-speaker__photo::after {
  content: attr(data-initial);
  font-family: var(--font-display);
  font-size: 90px;
  font-weight: 900;
  color: rgba(255,255,255,0.08);
  letter-spacing: -0.04em;
}
.card-speaker__photo--logo {
  background: #ffffff;
}
.card-speaker__photo--logo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 14% 10%;
}
.card-speaker__photo--logo::after {
  display: none;
}
.card-speaker__body { padding: 28px; }
.card-speaker__tag {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 14px;
}
.card-speaker h3 {
  font-size: 22px;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.card-speaker__role {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.card-speaker__topic {
  font-size: 15px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text);
}
.card-speaker--soon { opacity: 0.7; }
.card-speaker--soon .card-speaker__photo {
  background: repeating-linear-gradient(45deg, #141414, #141414 10px, #0a0a0a 10px, #0a0a0a 20px);
}

/* ============ TIMELINE ============ */
.timeline {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
  padding-left: 32px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 12px; bottom: 12px;
  width: 2px;
  background: var(--border);
}
.timeline__item {
  position: relative;
  padding: 24px 0 24px 32px;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: start;
}
.timeline__item::before {
  content: "";
  position: absolute;
  left: -32px; top: 32px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 3px solid var(--text);
}
.timeline__item--accent::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 6px rgba(255,90,31,0.15);
}
.timeline__time {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.timeline__body h3 {
  font-size: 22px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.timeline__body p {
  color: var(--text-muted);
  font-size: 15px;
}

/* ============ VENUE ============ */
.venue {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: stretch;
}
.venue__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.venue__name {
  font-size: 36px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.venue__addr {
  font-size: 16px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 24px;
}
.venue__desc {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 16px;
}
.venue__map {
  min-height: 420px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
}
.venue__map iframe { width: 100%; height: 100%; border: 0; }

/* ============ ORGANIZERS ============ */
.organizers {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: start;
}
.organizers__text p {
  margin-bottom: 18px;
  font-size: 17px;
  color: var(--text);
}
.organizers__text strong { font-weight: 700; }
.organizers__text em { font-style: normal; color: var(--accent); font-weight: 600; }
.organizers__text .btn { margin-top: 16px; }
.organizers__stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.stat {
  padding: 32px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--accent);
}
.stat__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 36px;
  line-height: 1;
  margin-bottom: 10px;
  color: var(--text);
}
.stat__label {
  font-size: 14px;
  color: var(--text-muted);
}

/* ============ TICKETS ============ */
.tickets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}
.ticket {
  background: var(--bg-dark-2);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}
.ticket:hover {
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}
.ticket--vip {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(255,90,31,0.08) 0%, var(--bg-dark-2) 40%);
}
.ticket__badge {
  position: absolute;
  top: -1px; right: 32px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 12px;
  padding: 6px 16px 8px;
  border-radius: 0 0 var(--radius) var(--radius);
  letter-spacing: 0.06em;
}
.ticket__header { margin-bottom: 32px; }
.ticket__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 36px;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 12px;
}
.ticket__pricing {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.ticket__price-old {
  font-size: 20px;
  color: rgba(255,255,255,0.4);
  text-decoration: line-through;
}
.ticket__price {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 36px;
  color: var(--accent);
}
.ticket__features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}
.ticket__feature {
  position: relative;
  padding-left: 32px;
  font-size: 15px;
  color: rgba(255,255,255,0.9);
}
.ticket__feature::before {
  content: "✦";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 14px;
}
.ticket__feature--bold {
  font-weight: 700;
}
.ticket__feature--disabled {
  color: rgba(255,255,255,0.3);
  text-decoration: line-through;
}
.ticket__feature--disabled::before {
  color: rgba(255,255,255,0.2);
}
.ticket__btn { width: 100%; text-align: center; }
.tickets__note {
  text-align: center;
  margin-top: 36px;
  font-size: 14px;
  color: rgba(255,255,255,0.45);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ============ FAQ ============ */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq__item {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  transition: background 0.2s;
}
.faq__item[open] { background: #fff; border: 1px solid var(--border); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 28px;
  font-weight: 600;
  font-size: 17px;
  position: relative;
  padding-right: 60px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+";
  position: absolute;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 28px;
  font-weight: 300;
  color: var(--accent);
  transition: transform 0.2s;
}
.faq__item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq__item p {
  padding: 0 28px 24px;
  color: var(--text-muted);
  font-size: 15px;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--bg-dark);
  color: var(--text-inverse);
  padding: 80px 0 32px;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}
.footer__col { display: flex; flex-direction: column; gap: 12px; }
.footer__col a {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  transition: color 0.15s;
}
.footer__col a:hover { color: var(--accent); }
.footer__logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 8px;
}
.footer__col--brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.footer__date {
  color: var(--accent) !important;
  font-weight: 600;
  margin-top: 4px;
}
.footer__title {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  text-transform: lowercase;
  margin-bottom: 6px;
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--border-dark);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

/* ============ MOBILE CTA ============ */
.mobile-cta {
  display: none;
  position: fixed;
  bottom: 16px;
  left: 16px;
  right: 16px;
  z-index: 90;
  height: 54px;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(255,90,31,0.4);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .venue { grid-template-columns: 1fr; }
  .venue__map { min-height: 360px; }
  .organizers { grid-template-columns: 1fr; gap: 40px; }
  .tickets { grid-template-columns: 1fr; max-width: 480px; }
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .section { padding: 72px 0; }
  .section__head { margin-bottom: 36px; }

  .header__nav {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0; bottom: 0;
    background: var(--bg-dark);
    flex-direction: column;
    padding: 32px 24px;
    gap: 20px;
    z-index: 100;
  }
  .header__nav.is-open { display: flex; }
  .header__nav a { font-size: 18px; color: #ffffff; }
  .header__cta { display: none; }
  .header__burger { display: flex; }

  .hero__bar { padding: 20px var(--pad) 24px; }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1; padding: 0 12px; font-size: 13px; }

  .grid--4, .grid--3, .grid--2 { grid-template-columns: 1fr; }

  .card-topic { padding: 36px 28px; }
  .card-topic h3 { font-size: 22px; }

  .timeline { padding-left: 24px; }
  .timeline__item { grid-template-columns: 1fr; gap: 8px; padding-left: 24px; }
  .timeline__item::before { left: -24px; top: 28px; }
  .timeline__time { font-size: 14px; }
  .timeline__body h3 { font-size: 18px; }

  .venue__name { font-size: 28px; }
  .tickets { grid-template-columns: 1fr; max-width: 100%; }
  .ticket { padding: 32px 24px; }
  .ticket__name { font-size: 28px; }
  .ticket__price { font-size: 28px; }

  .footer__inner { grid-template-columns: 1fr; gap: 32px; margin-bottom: 40px; }
  .footer__bottom { flex-direction: column; gap: 8px; text-align: center; }

  .mobile-cta { display: flex; }
  body { padding-bottom: 80px; }
}