:root {
  --bg: #f4f8f5;
  --surface: #ffffff;
  --text: #26324d;
  --muted: #5b6785;
  --blue: #1e4a9c;
  --blue-deep: #0f2f6e;
  --link-color: #1e4a9c;
  --yellow: #ffd83d;
  --yellow-soft: #fff4bf;
  --green: #a9dbb6;
  --green-strong: #8fcf9f;
  --green-soft: #e4f4e8;
  --green-ink: #2c6b45;
  --line: #a9dbb6;
  --shadow: rgba(79, 160, 104, 0.35);
  --grad-1: #eaf3ff;
  --grad-2: #fff8d6;
  --grad-3: #e6f5ea;
  --grad-4: #f1f7ff;
  --grad-5: #fffbe3;
  --grad-6: #e9f6ee;
  --on-blue: #ffffff;
  --radius-card: 20px;
  --fontDefault: "Roboto", "Segoe UI", system-ui, sans-serif;
  --fontTitle: "Quicksand", "Segoe UI", system-ui, sans-serif;
  --font-size-body: 1rem;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

::selection {
  background: var(--yellow);
  color: #0f2f6e;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--fontDefault);
  font-size: var(--font-size-body);
  line-height: 1.6;
  overflow-x: clip;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(-45deg, var(--grad-1), var(--grad-2), var(--grad-3), var(--grad-4), var(--grad-5), var(--grad-6));
  background-size: 400% 400%;
}

@keyframes sky-gradient {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

body::before {
  animation: sky-gradient 8s ease infinite;
}

* {
  scrollbar-width: thin;
  scrollbar-color: var(--green-strong) var(--bg);
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 10px;
  z-index: 10000;
  padding: 10px 16px;
  border: 2px solid var(--blue);
  border-radius: 8px;
  background: var(--surface);
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 10px;
}

#main-content:focus {
  outline: none;
}

a {
  color: var(--link-color);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--blue-deep);
}

:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
  border-radius: 6px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  box-shadow: 0 2px 8px var(--shadow);
}

.topbar__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.6rem 1.5rem;
}

.topbar__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin-left: auto;
}

.nav-link {
  padding: 0.3rem 0;
  border-bottom: 3px solid transparent;
  color: var(--green-ink);
  font-family: var(--fontTitle);
  font-weight: 700;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--blue);
  border-bottom-color: var(--green);
}

.nav-link[aria-current="page"] {
  color: var(--blue);
  border-bottom-color: var(--yellow);
}

.shell {
  flex: 1;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
}

.page {
  display: grid;
  gap: 1.75rem;
}

.page[hidden] {
  display: none;
}

.card {
  min-width: 0;
  padding: 1.5rem 2rem 1.75rem;
  border: 2px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: 0 3px 8px var(--shadow);
}

.card > p + p,
.card > p + .code-field,
.card > .code-field + p {
  margin-top: 0.9rem;
}

.card--center {
  text-align: center;
}

.card__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--yellow);
  width: fit-content;
  color: var(--blue);
  font-family: var(--fontTitle);
  font-size: 1.5rem;
  font-weight: 500;
  line-height: 1.2;
}

.card--center .card__title {
  margin-inline: auto;
}

.card__title svg {
  width: 1.3rem;
  height: 1.3rem;
}

.not-found {
  display: grid;
  justify-items: center;
  gap: 1.25rem;
  padding: 2.5rem 1.5rem;
  text-align: center;
}

.not-found .card__title {
  margin: 0;
}

.not-found p {
  margin: 0;
}

.log {
  margin-top: 1.75rem;
  padding-left: 1.25rem;
  border-left: 4px solid var(--yellow);
}

.log__date {
  margin-bottom: 0.6rem;
  color: var(--blue);
  font-family: var(--fontTitle);
  font-size: 1.15rem;
  font-weight: 700;
}

.log__list {
  display: grid;
  gap: 0.45rem;
  padding-left: 1.2rem;
}

.log__list li::marker {
  color: var(--green-ink);
}

.form {
  display: grid;
  gap: 1.25rem;
}

.form__field {
  min-width: 0;
  border: 0;
}

.form__label {
  display: block;
  margin-bottom: 0.35rem;
  padding: 0;
  color: var(--blue);
  font-family: var(--fontTitle);
  font-weight: 700;
}

.form__label--required::after,
.form__asterisk {
  color: #d32f2f;
  font-weight: 700;
}

.form__label--required::after {
  content: " *";
  content: " *" / "";
}

.form__legend {
  margin: 0 0 1.25rem;
}

.form__hint {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.form__choices {
  display: grid;
  gap: 0.4rem;
}

.form__choice {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  cursor: pointer;
}

.form__choice input {
  flex: none;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.25rem;
  accent-color: var(--blue);
}

.form__notice {
  padding: 0.75rem 1rem;
  border-radius: 12px;
  background: var(--yellow-soft);
  font-size: 0.92rem;
}

.form__notice p + p {
  margin-top: 0.5rem;
}

.form__submit {
  justify-self: start;
  border: 0;
  font-size: 1rem;
  cursor: pointer;
}

.form__submit:disabled {
  opacity: 0.6;
  cursor: wait;
}

.form__status:empty {
  display: none;
}

.form__status {
  color: var(--green-ink);
  font-weight: 500;
}

.form__status--error {
  color: #b3261e;
}

.form__trap {
  position: absolute;
  left: -9999px;
}

.form__frame {
  display: none;
}

.latest--loading {
  visibility: hidden;
}

.card__pending {
  margin-top: 1rem;
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  background: var(--yellow-soft);
  color: var(--blue-deep);
}

.card__icon {
  display: block;
  margin: 0.25rem 0 0.75rem;
  color: var(--green-ink);
}

.card__icon svg {
  width: 2.5rem;
  height: 2.5rem;
}

.hero {
  position: relative;
  padding: 0;
  overflow: hidden;
  text-align: center;
}

.hero__title {
  display: block;
  width: fit-content;
  margin: 2rem auto 0;
  padding: 0 1rem 0.9rem;
  border-bottom: 5px solid var(--yellow);
  color: var(--blue);
  font-family: var(--fontTitle);
  font-size: clamp(2.2rem, 7vw, 3.4rem);
  font-weight: 500;
  line-height: 1.1;
  text-wrap: balance;
}

.hero__lead {
  margin: 1.1rem 1.5rem 1.75rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.hero__info {
  padding: 1rem 2.5rem 1.1rem;
  background: var(--green-soft);
  text-align: center;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 1.75rem;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 1.75rem;
  background: var(--yellow-soft);
  border-color: var(--yellow);
  box-shadow: 0 3px 8px rgba(214, 170, 0, 0.3);
}

.cta__flag {
  flex: none;
  width: 90px;
  height: auto;
}

.cta__text {
  flex: 1 1 14rem;
}

.cta__text .card__title {
  margin-bottom: 0.75rem;
}

.button {
  display: inline-block;
  padding: 0.6rem 1.6rem;
  border-radius: 8px;
  background: var(--blue);
  color: var(--on-blue);
  font-family: var(--fontTitle);
  font-weight: 700;
  text-decoration: none;
  transition: background-color 0.15s ease;
}

.button:hover {
  background: var(--blue-deep);
  color: var(--on-blue);
}

.text-field {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: 2px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-family: var(--fontDefault);
  font-size: var(--font-size-body);
  outline: none;
}

.text-field:focus {
  border-color: var(--blue);
}

.code-field {
  display: block;
  height: 6.5rem;
  background: var(--green-soft);
  font: 0.8rem / 1.4 ui-monospace, Consolas, monospace;
  resize: vertical;
}

.rules {
  display: grid;
  gap: 0.6rem;
  padding-left: 1.4rem;
}

.rules li::marker {
  color: var(--green-ink);
  font-weight: 700;
}

.credits {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
  justify-items: start;
}

.credits__frame {
  max-width: 100%;
  border: 0;
}

.data-table {
  width: 100%;
  margin: 1rem 0 0;
  border: 2px solid var(--line);
  border-collapse: separate;
  border-radius: 14px;
  border-spacing: 0;
  font-size: 0.9rem;
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: 0.5rem 0.9rem;
  border: 0;
  vertical-align: middle;
}

.data-table thead th {
  background: var(--blue);
  color: var(--on-blue);
  font-family: var(--fontTitle);
  font-weight: 700;
  text-align: left;
}

.data-table tbody tr:nth-child(even) {
  background: var(--green-soft);
}

.data-table tbody tr:hover {
  background: var(--yellow-soft);
}

.webring-members {
  table-layout: fixed;
}

.webring-members img {
  display: block;
  max-width: 100%;
  image-rendering: pixelated;
}

.webring-members a {
  font-weight: 700;
  text-decoration: none;
}

.webring-members a:hover {
  text-decoration: underline;
}

.webring-members td {
  overflow-wrap: anywhere;
}

a[data-external]::after {
  content: "\2060";
  display: inline;
  padding-left: 0.85em;
  margin-left: 3px;
  background-color: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M14 2.5a.5.5 0 0 0-.5-.5h-6a.5.5 0 0 0 0 1h4.793L2.146 13.146a.5.5 0 0 0 .708.708L13 3.707V8.5a.5.5 0 0 0 1 0z'/%3E%3C/svg%3E") left center / 0.8em 0.8em no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M14 2.5a.5.5 0 0 0-.5-.5h-6a.5.5 0 0 0 0 1h4.793L2.146 13.146a.5.5 0 0 0 .708.708L13 3.707V8.5a.5.5 0 0 0 1 0z'/%3E%3C/svg%3E") left center / 0.8em 0.8em no-repeat;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  padding: 1rem max(1.5rem, calc((100vw - 1100px) / 2 + 1.5rem));
  background: var(--surface);
  border-top: 3px solid var(--green);
  color: var(--muted);
  font-size: 0.85rem;
}

.footer a {
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

@media (max-width: 768px) {
  .topbar__inner {
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    padding: 0.6rem 1rem;
  }

  .topbar__nav {
    flex-basis: 100%;
    justify-content: space-between;
    gap: 0.25rem 1rem;
    margin-left: 0;
  }

  .shell {
    padding: 1.5rem 1rem 2rem;
  }

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

  .card {
    padding: 1.25rem 1.25rem 1.5rem;
  }

  .hero {
    padding: 0;
  }

  .hero__info {
    padding: 1rem 1.25rem;
  }

  .footer {
    justify-content: center;
    text-align: center;
  }
}