.site {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--color-line);
  background: color-mix(in srgb, var(--color-ink) 88%, transparent);
  backdrop-filter: blur(10px);
}

.site-header__inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  align-self: center;
  text-decoration: none;
  line-height: 0;
}

.site-logo__img {
  display: block;
  width: auto;
  height: 2rem;
}

.site-header .site-nav-toggle {
  display: inline-flex;
}

.site-nav {
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  padding: var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
  display: none;
}

.site-nav.is-open {
  display: grid;
  gap: var(--space-3);
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.site-nav__login {
  width: 100%;
  justify-self: stretch;
}

.site-nav__link {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 600;
}

.site-nav__link:hover,
.site-nav__link:focus-visible,
.site-nav__link.is-current {
  color: var(--color-text);
  background: var(--color-accent-soft);
}

.site-main {
  flex: 1;
}

/* sticky header altında hash hedefi kalsın (menü active’i etkilemez) */
.hero,
.section {
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

.hero {
  padding: clamp(2rem, 5vw, 3.5rem) 0 var(--space-6);
}

.hero__grid {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

.hero__content .a-pill {
  margin-bottom: var(--space-3);
}

.hero__content .a-display {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  margin-bottom: var(--space-2);
}

.hero__content .a-lead {
  font-size: var(--fs-md);
  line-height: 1.5;
  max-width: 32rem;
  margin-bottom: var(--space-5);
}

.hero__card {
  width: min(100%, 28rem);
}

.m-stats {
  list-style: none;
  margin: var(--space-5) 0 0;
  padding: 0.25rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: auto auto;
  column-gap: 0.25rem;
  row-gap: 0.15rem;
  max-width: 15.5rem;
  background: color-mix(in srgb, white 4%, transparent);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.m-stats__item {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 2;
  align-items: center;
  justify-items: center;
  padding: 0.35rem 0.25rem;
  border-radius: calc(var(--radius-sm) - 2px);
  text-align: center;
}

.m-stats__item--success {
  background: color-mix(in srgb, var(--color-success) 14%, transparent);
}

.m-stats__item--warn {
  background: color-mix(in srgb, var(--color-warn) 14%, transparent);
}

.m-stats__item--info {
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
}

.m-stats__value {
  grid-row: 1;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.m-stats__item--success .m-stats__value {
  color: var(--color-success);
}

.m-stats__item--warn .m-stats__value {
  color: var(--color-warn);
}

.m-stats__item--info .m-stats__value {
  color: var(--color-accent);
}

.m-stats__label {
  grid-row: 2;
  font-size: 0.7rem;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-transform: lowercase;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-8);
  }

  .hero__card {
    width: 100%;
    justify-self: end;
  }
}

.section {
  padding: var(--space-8) 0;
}

.section__header {
  margin-bottom: var(--space-5);
}

.event-detail {
  padding-top: var(--space-5);
}

.event-detail__back {
  margin: 0 0 var(--space-5);
}

.event-detail__grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

.event-detail__left {
  display: grid;
  gap: var(--space-5);
  min-width: 0;
}

.event-detail__media {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}

.event-detail__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 920 / 298;
  object-fit: cover;
}

.event-detail__copy {
  display: grid;
  gap: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--fs-md);
  line-height: var(--lh-body);
  max-width: 42rem;
}

.event-detail__section-title {
  margin: 0;
  color: var(--color-text);
  font-size: var(--fs-lg);
}

.event-detail__copy p {
  margin: 0;
}

.event-detail__right {
  display: grid;
  gap: var(--space-5);
  min-width: 0;
  padding: var(--space-5);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, white 7%, var(--color-ink));
  box-shadow: var(--shadow-soft);
}

.event-detail__title {
  margin: 0;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
}

.event-detail__form {
  display: grid;
  gap: 1.5rem;
}

.event-detail__field {
  gap: 0.65rem;
}

.event-detail__question {
  display: flex;
  gap: 0.35rem;
  font-size: var(--fs-md);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.event-detail__qnum {
  flex-shrink: 0;
}

.event-detail__input {
  background: color-mix(in srgb, black 28%, var(--color-ink));
  border-color: transparent;
  min-height: 2.75rem;
  padding-inline: 1rem;
}

.event-detail__input:focus {
  border-color: var(--color-accent);
}

.event-detail__separator {
  width: 100%;
  height: 1px;
  margin: var(--space-2) 0 0;
  border: 0;
  background: var(--color-line);
}

.event-detail__submit {
  width: 100%;
}

@media (min-width: 900px) {
  .event-detail__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
    gap: var(--space-8);
  }

  .event-detail__right {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
  }
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-line);
  background: color-mix(in srgb, var(--color-surface) 80%, transparent);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-5) 0;
}

.site-footer__brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text);
}

.site-footer__copy {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

@media (min-width: 768px) {
  .site-header .site-nav-toggle {
    display: none;
  }

  /* CSS Anchor Positioning — Kevin Powell pattern (hover/click only, no scroll-spy) */
  .site-nav {
    position: static;
    inset: auto;
    top: auto;
    left: auto;
    right: auto;
    bottom: auto;
    width: fit-content;
    display: flex;
    align-items: center;
    align-self: center;
    gap: var(--space-3);
    padding: 0;
    background: transparent;
    border: 0;
    isolation: isolate;
  }

  .site-nav__list {
    position: relative;
    isolation: isolate;
    display: flex;
    align-items: center;
    gap: 0;
  }

  .site-nav__item {
    display: flex;
    align-items: center;
  }

  .site-nav__link {
    position: relative;
    z-index: 1;
    padding: 0.5rem 0.85rem;
    line-height: 1.2;
  }

  .site-nav__login {
    width: auto;
    flex-shrink: 0;
  }

  @supports (anchor-name: --nav-active) {
    .site-nav__link:hover,
    .site-nav__link:focus-visible,
    .site-nav__link.is-current {
      background: transparent;
    }

    /* idle underline sadece link listesinde — Giriş butonu hariç */
    .site-nav__list {
      anchor-name: --nav-active;
    }

    .site-nav__item:has(.is-current),
    .site-nav__item:hover,
    .site-nav__item:focus-within {
      anchor-name: --nav-active;
    }

    .site-nav__list::before {
      content: "";
      position: absolute;
      z-index: -1;
      pointer-events: none;
      position-anchor: --nav-active;
      /* idle: menünün altında ince border bar */
      top: calc(anchor(bottom) - 3px);
      left: calc(anchor(left) + 0.65rem);
      right: calc(anchor(right) + 0.65rem);
      bottom: calc(anchor(bottom) + 2px);
      border-radius: 999px;
      background: rgb(25 124 255 / 0.55);
      border: 0;
      transition: 680ms
        linear(
          0,
          0.029 1.6%,
          0.123 3.5%,
          0.651 10.6%,
          0.862 14.1%,
          1.002 17.7%,
          1.046 19.6%,
          1.074 21.6%,
          1.087 23.9%,
          1.086 26.6%,
          1.014 38.5%,
          0.994 46.3%,
          1
        );
    }

    /* hover veya aktif item: tam highlight */
    .site-nav__list:has(.is-current)::before,
    .site-nav__list:has(.site-nav__item:hover, .site-nav__item:focus-within)::before {
      top: anchor(top);
      left: anchor(left);
      right: anchor(right);
      bottom: anchor(bottom);
      border-radius: var(--radius-sm);
      background: rgb(25 124 255 / 0.22);
      border: 1px solid rgb(25 124 255 / 0.35);
    }
  }
}