:root {
  --color-muk: #ed1c24;
  --color-muk-dark: #c2181c;
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-surface-dark: #0e1d33;
  --color-primary: #1167d8;
  --color-primary-dark: #0c57ba;
  --color-text: #102033;
  --color-text-soft: #5e6b7a;
  --color-border: #dce5f0;
  --color-accent: #eaf2ff;
  --color-shadow: 0 20px 60px rgba(16, 32, 51, 0.08);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --container-width: 1200px;
  --transition: 0.25s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

img {
  display: block;
  max-width: 100%;
}

iframe {
  display: block;
  width: 100%;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: min(100% - 32px, var(--container-width));
  margin: 0 auto;
}

.section {
  padding: 88px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 247, 251, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 229, 240, 0.8);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0 8px;
  font-size: 14px;
  color: var(--color-text-soft);
}

.topbar__email {
  transition: color var(--transition);
}

.topbar__email:hover {
  color: var(--color-primary);
}

.topbar__meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar__lang.is-active {
  color: var(--color-text);
  font-weight: 700;
}

.navbar {
  display: flex;
  flex-direction: column;
  /* align-items: center; */
  gap: 10px;
  padding: 0px 0 18px;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo__image {
  width: 138px;
  height: auto;
}

.logo__image--azure {
  width: 120px;
}

.nav-wrapper {
  gap: 25px;
  display: flex;
  align-items: center;
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-left: auto;
}

.nav a {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -7px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav a:hover::after {
  width: 100%;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--color-muk);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition), color var(--transition);
  box-shadow: 0 16px 36px rgba(237, 28, 36, 0.24);
}

.button:hover {
  background: var(--color-muk-dark);
  transform: translateY(-2px);
}

.button--small {
  min-height: 44px;
  padding: 0 22px;
  flex-shrink: 0;
}

.button--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: rgba(17, 103, 216, 0.22);
  box-shadow: none;
}

.button--ghost:hover {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.button--full {
  width: 100%;
}

.burger {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  margin-left: auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.burger span {
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 999px;
  transition:
    transform var(--transition),
    opacity var(--transition);
}

.burger.is-active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.burger.is-active span:nth-child(2) {
  opacity: 0;
}

.burger.is-active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  padding: 0 0 18px;
}

.mobile-menu.is-open {
  display: grid;
  gap: 14px;
}

.mobile-menu a {
  font-weight: 600;
  color: var(--color-text);
}

.mobile-menu a.button {
  color: white;
}

.hero {
  padding-top: 60px;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, 0.95fr);
  align-items: center;
  gap: 48px;
}

.hero__eyebrow,
.section-heading__label {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero__title {
  margin: 18px 0 18px;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  max-width: 760px;
}

.hero__date {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
}

.hero__speaker {
  margin: 0;
  max-width: 620px;
  font-size: 18px;
  color: var(--color-text-soft);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.hero__highlights {
  display: grid;
  gap: 12px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  max-width: 560px;
}

.hero__highlights li {
  position: relative;
  padding-left: 30px;
  color: var(--color-text-soft);
  font-size: 16px;
}

.hero__highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
}

.hero-card {
  position: relative;
  padding: 18px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at top left,
      rgba(17, 103, 216, 0.24),
      transparent 42%),
    var(--color-surface);
  box-shadow: var(--color-shadow);
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -80px -80px auto auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(17, 103, 216, 0.08);
  pointer-events: none;
}

.hero-card__image {
  width: 100%;
  min-height: 520px;
  object-fit: cover;
  border-radius: calc(var(--radius-xl) - 10px);
}

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 38px;
}

.section-heading__title,
.content-block h2,
.audience h2,
.register-box h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.program-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.program-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--color-shadow);
  transition:
    transform var(--transition),
    border-color var(--transition);
}

.program-item:hover {
  transform: translateY(-4px);
  border-color: rgba(17, 103, 216, 0.32);
}

.program-item__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 800;
  flex-shrink: 0;
}

.program-item p {
  margin: 10px 0 0;
  font-size: 18px;
  font-weight: 600;
}

.content-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 24px;
  align-items: start;
  margin-bottom: 30px;
}

.content-block__main {
  padding: 34px;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--color-shadow);
}

.content-block__main p,
.note-card p,
.offer-card p,
.register-box p,
.faq-answer p,
.footer__text {
  margin: 0;
  color: var(--color-text-soft);
  font-size: 17px;
}

.content-block__main h2 {
  margin: 14px 0 16px;
}

.note-card {
  height: 100%;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, #1167d8 0%, #0e56b1 100%);
  color: #ffffff;
  box-shadow: var(--color-shadow);
}

.note-card h3 {
  margin: 0 0 10px;
  font-size: 24px;
}

.note-card p {
  color: rgba(255, 255, 255, 0.82);
}

.reasons {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.reason-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--color-shadow);
  transition: transform var(--transition);
}

.reason-card:hover {
  transform: translateY(-4px);
}

.reason-card__icon,
.offer-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 62px;
  height: 62px;
  border-radius: 18px;
  background: var(--color-accent);
  margin-bottom: 18px;
}

.reason-card__icon img,
.offer-card__icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.reason-card p {
  margin: 0;
  font-size: 16px;
  color: var(--color-text);
}

.video-gallery {
  display: grid;
  gap: 22px;
}

.video-player {
  padding: 22px;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--color-shadow);
}

.video-player__frame {
  overflow: hidden;
  border-radius: 24px;
  background: #000000;
}

.video-player__frame iframe {
  aspect-ratio: 16 / 9;
}

.video-player__info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 18px;
}

.video-player__info h3 {
  margin: 0;
  font-size: 22px;
}

.video-player__counter {
  color: var(--color-text-soft);
  font-weight: 700;
  white-space: nowrap;
}

.video-thumbs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.video-thumb {
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 22px;
  background: var(--color-surface);
  box-shadow: var(--color-shadow);
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
  text-align: left;
}

.video-thumb:hover {
  transform: translateY(-4px);
  border-color: rgba(17, 103, 216, 0.3);
}

.video-thumb.is-active {
  border-color: var(--color-primary);
  box-shadow: 0 18px 40px rgba(17, 103, 216, 0.18);
}

.video-thumb__image {
  overflow: hidden;
  border-radius: 16px;
  margin-bottom: 12px;
}

.video-thumb__image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.video-thumb__title {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
}

.offer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.offer-card {
  padding: 30px;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--color-shadow);
  transition:
    transform var(--transition),
    border-color var(--transition);
}

.offer-card:hover {
  transform: translateY(-4px);
  border-color: rgba(17, 103, 216, 0.28);
}

.offer-card h3 {
  margin: 0 0 10px;
  font-size: 26px;
}

.audience__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 470px);
  gap: 32px;
  align-items: center;
}

.audience__content {
  padding: 34px;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--color-shadow);
}

.audience__content h2 {
  margin: 14px 0 18px;
}

.audience-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.audience-list li {
  position: relative;
  padding-left: 28px;
  color: var(--color-text-soft);
  font-size: 17px;
}

.audience-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-primary);
}

.audience__visual {
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: var(--color-shadow);
}

.audience__visual img {
  width: 100%;
  min-height: 420px;
  object-fit: cover;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: 22px;
  background: var(--color-surface);
  box-shadow: var(--color-shadow);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 28px;
  border: 0;
  background: transparent;
  text-align: left;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
}

.faq-icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 999px;
  transform: translate(-50%, -50%);
  transition:
    transform var(--transition),
    opacity var(--transition);
}

.faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.is-open .faq-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg) scaleX(0);
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition);
}

.faq-answer p {
  overflow: hidden;
  margin: 0;
  padding: 0 28px 0;
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.is-open .faq-answer p {
  padding-bottom: 24px;
}

.register-box {
  display: grid;
  grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
  gap: 28px;
  padding: 36px;
  border-radius: 36px;
  background: linear-gradient(180deg, #ffffff 0%, #f9fbff 100%);
  box-shadow: var(--color-shadow);
}

.register-box__content h2 {
  margin: 14px 0 14px;
}

.register-form {
  display: grid;
  gap: 18px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field span {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: #ffffff;
  padding: 16px 18px;
  color: var(--color-text);
  outline: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: rgba(17, 103, 216, 0.48);
  box-shadow: 0 0 0 4px rgba(17, 103, 216, 0.08);
}

.form-field textarea {
  min-height: 132px;
  resize: vertical;
}

.form-field--full {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.form-note {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-soft);
}

.form-note a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.site-footer {
  padding: 34px 0 42px;
  border-top: 1px solid rgba(220, 229, 240, 0.9);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  gap: 24px;
  align-items: center;
}

.logo--footer {
  margin-bottom: 12px;
}

.footer__links {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer__links a,
.footer__contact a {
  color: var(--color-text-soft);
  transition: color var(--transition);
}

.footer__links a:hover,
.footer__contact a:hover {
  color: var(--color-primary);
}

.logo__box {
  display: flex;
  align-items: center;
  gap: 30px;
  justify-content: space-between;
}

.logo__box-ms {
  gap: 15px;
  display: inline-flex;
  align-items: center;
}

.topbar__lang {
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.topbar__lang.is-active {
  font-weight: 700;
  opacity: 1;
}

.topbar__lang:hover {
  opacity: 0.8;
}

@media (max-width: 1180px) {

  .hero__grid,
  .audience__grid,
  .register-box,
  .content-block {
    grid-template-columns: 1fr;
  }

  .reasons {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .video-thumbs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer__links {
    justify-content: center;
  }

  .footer__contact {
    justify-self: center;
  }
}

@media (max-width: 980px) {

  .nav-wrapper {
    display: none;
  }

  .burger {
    display: inline-flex;
  }

  .program-list,
  .offer-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .hero-card__image {
    min-height: 420px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .topbar {
    padding-top: 12px;
    font-size: 13px;
  }

  .navbar {
    padding: 0px 0 16px;
  }

  .hero {
    padding-top: 34px;
  }

  .hero__title {
    font-size: 38px;
  }

  .hero__date {
    font-size: 18px;
  }

  .hero__speaker {
    font-size: 16px;
  }

  .program-item,
  .offer-card,
  .content-block__main,
  .note-card,
  .audience__content,
  .video-player,
  .register-box {
    padding: 24px;
  }

  .reasons {
    grid-template-columns: 1fr;
  }

  .video-thumbs {
    grid-template-columns: 1fr;
  }

  .video-player__info {
    flex-direction: column;
    align-items: flex-start;
  }

  .faq-question {
    padding: 20px 22px;
    font-size: 17px;
  }

  .faq-answer p {
    padding-left: 22px;
    padding-right: 22px;
  }

  .faq-item.is-open .faq-answer p {
    padding-bottom: 20px;
  }

  .logo__box-ms .logo__image {
    width: 100%;
    max-height: 65px;
  }
}

@media (max-width: 575px) {

  .logo__image--azure,
  .logo__image--security {
    display: none;
  }

  .navbar {
    flex-direction: row;
    align-items: center;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 24px, var(--container-width));
  }

  .topbar {
    gap: 10px;
  }

  .logo__image {
    width: 120px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button,
  .button--ghost {
    width: 100%;
  }

  .hero-card {
    padding: 12px;
  }

  .hero-card__image,
  .audience__visual img {
    min-height: 280px;
  }

  .program-item {
    padding: 20px;
  }

  .program-item p {
    font-size: 16px;
    margin-top: 6px;
  }

  .register-box {
    border-radius: 28px;
    padding: 22px;
  }
}