html,
body {
  min-height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
  background-color: rgb(15, 15, 21);
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px;
  font-size: 15px;
}

main:not(:has(div.scoreboard-container)):not(:has(div.challenges-container)):not(:has(div.admin)):not(:has(div.challenge-detail)):not(:has(div.login)):not(:has(div.signup)) {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

main:has(div.challenges-container),
main:has(div.scoreboard-container) {
  display: flex;
  flex-direction: row;
  gap: 20px;
  padding: 0 20px 20px;
}

main:has(div.admin) {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 0 20px 40px;
  box-sizing: border-box;
}

main:has(div.challenge-detail) {
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
}

main:has(div.login),
main:has(div.signup) {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(520px, calc(100% - 40px));
  box-sizing: border-box;
}


nav a {
  color: var(--primary);
  text-decoration: none;
  background: none;
  margin: 0 10px;
  font-family: "Cascadia Code", Monospaced, monospace;
  cursor: pointer;
}

.glass-container {
  background: rgba(20, 20, 20, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

button,
.challenge-card > .challenge-btn,
input,
.admin-nav-button,
.challenge-filter {
  background: rgba(20, 20, 20, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  color: var(--primary);
  font-family: "Cascadia Code", Monospaced, monospace;
  padding: 10px 20px;
  cursor: pointer;
  font-size: 15px;
  border-radius: 13px;
  box-sizing: border-box;
}

h1 {
  justify-content: center;
  text-align: center;
}

input:focus {
  outline: none;
  box-shadow: 0 0 5px var(--secondary);
}

input::placeholder {
  font-family: "Cascadia Code", Monospaced, monospace;
  color: var(--primary);
  opacity: 0.1;
}

div.admin {
  width: min(960px, 100%);
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 20px auto 0;
  padding: 32px;
  text-align: left;
  justify-content: center;
  box-sizing: border-box;
  border-radius: 16px;
  background: rgba(20, 20, 20, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}


.login,
.signup,
.challenge-detail {
  width: min(480px, 100%);
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 0 auto;
  padding: 32px;
  text-align: left;
  box-sizing: border-box;
  border-radius: 16px;
  background: rgba(20, 20, 20, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.challenge-detail {
  margin: 0;
}

.login h2,
.signup h2,
.challenge-detail h1 {
  margin: 0;
  text-align: left;
}

.challenge-detail p {
  margin: 0;
  line-height: 1.6;
  opacity: 0.8;
}

.login input,
.login button,
.signup input,
.signup button,
.challenge-detail input,
.challenge-detail button {
  width: 100%;
}

.login input::placeholder,
.signup input::placeholder,
.challenge-detail input::placeholder {
  opacity: 0.45;
}

.panel__form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.panel__field span {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
}

.panel__result {
  line-height: 1.5;
}

.panel__result:empty {
  display: none;
}

.panel__result:not(:empty) {
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(20, 20, 20, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

:root {
  font-family: "Cascadia Code", Monospaced, monospace;
  --primary: white;
  --secondary: rgba(35, 35, 35, 0.5);
  color: var(--primary);
  background: var(--secondary);
  font-size: 13px;
}

.admin__header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin__header h1 {
  margin: 0;
  text-align: left;
}

.admin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(260px, 1fr);
  gap: 20px;
  align-items: start;
}

.admin__card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 24px;
  background: rgba(20, 20, 20, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.admin__card-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin__card-header h2 {
  margin: 0;
  font-size: 20px;
}

.admin__form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.admin__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin__field span {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
}

.admin input,
.admin button {
  width: 100%;
}

.admin input::placeholder {
  opacity: 0.45;
}

.admin__hint {
  margin: -4px 0 0;
  font-size: 12px;
  line-height: 1.4;
  opacity: 0.65;
}

.admin__actions {
  display: flex;
}

.admin__result {
  line-height: 1.5;
}

.admin__result:empty {
  display: none;
}

.admin__result:not(:empty) {
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(20, 20, 20, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.scoreboard-container {
  width: min(1000px, 100%);
  margin: 0 auto;
  padding: 40px 20px;
}

.scoreboard-header {
  text-align: center;
  margin-bottom: 40px;
}

.scoreboard-header h1 {
  margin: 0 0 12px;
  font-size: 42px;
  background: linear-gradient(135deg, var(--primary), rgba(255, 255, 255, 0.7));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.scoreboard-subtitle {
  margin: 0;
  font-size: 16px;
  opacity: 0.7;
  letter-spacing: 0.5px;
}

.scoreboard-table-wrapper {
  background: rgba(20, 20, 20, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.scoreboard-table {
  width: 100%;
  border-collapse: collapse;
  font-family: "Cascadia Code", Monospaced, monospace;
}

.scoreboard-table thead {
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.scoreboard-table thead th {
  padding: 20px 24px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
  color: var(--primary);
}

.scoreboard-table th.rank-col {
  width: 80px;
}

.scoreboard-table th.score-col {
  text-align: right;
  padding-right: 24px;
}

.scoreboard-row {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background-color 0.2s ease;
}

.scoreboard-row:hover {
  background: rgba(255, 255, 255, 0.04);
}

.scoreboard-row:last-child {
  border-bottom: none;
}

.scoreboard-table tbody td {
  padding: 18px 24px;
  color: var(--primary);
  font-size: 14px;
  vertical-align: middle;
}

.rank-cell {
  width: 80px;
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, rgba(100, 200, 255, 0.25), rgba(150, 100, 255, 0.25));
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
}

.scoreboard-row[data-rank="1"] .rank-badge {
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.3), rgba(255, 165, 0, 0.3));
  border-color: rgba(255, 215, 0, 0.4);
  color: #ffd700;
}

.scoreboard-row[data-rank="2"] .rank-badge {
  background: linear-gradient(135deg, rgba(192, 192, 192, 0.3), rgba(169, 169, 169, 0.3));
  border-color: rgba(192, 192, 192, 0.4);
  color: #e8e8e8;
}

.scoreboard-row[data-rank="3"] .rank-badge {
  background: linear-gradient(135deg, rgba(205, 127, 50, 0.3), rgba(184, 115, 51, 0.3));
  border-color: rgba(205, 127, 50, 0.4);
  color: #cd7f32;
}

.user-cell {
  flex: 1;
  font-weight: 500;
}

.score-cell {
  text-align: right;
  padding-right: 24px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  font-size: 15px;
}

.challenges-container {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 40px 20px;
}

.challenges-header {
  text-align: center;
  margin-bottom: 50px;
}

.challenges-header h1 {
  margin: 0;
  font-size: 42px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.challenges-subtitle {
  margin: 0;
  font-size: 16px;
  opacity: 0.7;
  letter-spacing: 0.5px;
}

.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  padding: 0;
}

.challenge-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px;
  background: rgba(20, 20, 20, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.challenge-card:hover {
  background: rgba(20, 20, 20, 0.6);
  border-color: rgba(255, 255, 255, 0.24);
  transform: translateY(-4px);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.2);
}

.challenge-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.challenge-card-header h2 {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
  flex: 1;
}

.challenge-points {
  display: inline-block;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.9);
}

.challenge-btn {
  width: 100%;
}

@media (max-width: 820px) {
  main:has(div.admin) {
    padding: 0 16px 24px;
  }

  div.admin {
    margin-top: 8px;
    padding: 24px;
  }

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

  .challenges-container {
    padding: 20px 16px;
  }

  .challenges-header h1 {
    font-size: 32px;
  }

  .challenges-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .challenge-card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .challenge-points {
    align-self: flex-start;
  }

  main:has(div.challenge-detail) {
    padding: 16px;
  }

  .login,
  .signup {
    padding: 24px;
  }

  .challenge-detail {
    margin: 0;
    padding: 24px;
  }
}

.admin textarea {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 20px;
  background: rgba(20, 20, 20, .4);
  color: var(--primary);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 13px;
  font-family: "Cascadia Code", Monospaced, monospace;
  font-size: 15px;
  resize: vertical;
}

/* Account cards use the same panels as signup and login. */
.account-name { font-size: 1.5rem; font-weight: bold; overflow-wrap: anywhere; }
.account-codes { display: grid; gap: 1rem; }
.account-codes > div { padding: 1rem; border: 1px solid #555; border-radius: 12px; }
.account-code { font-family: monospace; font-size: 2rem; letter-spacing: .15em; margin: .5rem 0; }
.account-hint { font-size: .9rem; opacity: .85; }
.account-continue {
  display: inline-block;
  padding: .75rem 1rem;
  color: var(--primary);
  text-decoration: none;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 13px;
  background: rgba(20, 20, 20, .4);
  font-family: "Cascadia Code", Monospaced, monospace;
}
.signup form + p { margin-top: .75rem; }
.admin > .admin__card { margin-bottom: 1.5rem; }

/* Longer code receipts stay in the page flow, including on small screens. */
main:has(div.signup) {
  position: static;
  left: auto;
  top: auto;
  transform: none;
  margin: 24px auto 40px;
}
.signup { gap: 16px; }
.signup p { margin: 0; line-height: 1.5; }
.account-codes h3 { margin: 0 0 .5rem; }
@media (max-width: 600px) {
  nav { flex-wrap: wrap; gap: 12px; }
  nav .links, nav .usr { display: flex; flex-wrap: wrap; gap: 8px; }
  nav a { margin: 0; }
}

.challenge-completed {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid rgba(100, 220, 140, .5);
  border-radius: 10px;
  background: rgba(40, 160, 80, .15);
  color: #9aefb3;
  font-weight: bold;
}

.challenge-card[data-completed="true"] {
  border-color: #64dc8c;
  box-shadow: 0 0 0 1px rgba(100, 220, 140, .3), 0 0 24px rgba(60, 220, 120, .3);
}
.challenge-card[data-completed="true"]:hover {
  border-color: #9aefb3;
  box-shadow: 0 0 0 1px rgba(100, 220, 140, .5), 0 0 32px rgba(60, 220, 120, .45);
}

.challenges-container { display: flex; flex-direction: column; gap: 16px; width: 100%; }
.challenge-filter {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: background .2s, border-color .2s;
}
.challenge-filter:hover {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .3);
}
.challenge-filter:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

.admin.admin--challenge-editor { width: min(1200px, 100%); }
.admin-challenge-workspace { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 24px; align-items: start; }
.admin-challenge-sidebar { position: sticky; top: 20px; min-width: 0; }
nav.admin-challenge-list { display: flex; flex-direction: column; flex-wrap: nowrap; align-items: stretch; gap: 8px; padding: 0; margin-top: 20px; max-height: 55vh; overflow-y: auto; }
nav.admin-challenge-list a { margin: 0; padding: 12px; border: 1px solid rgba(255,255,255,.12); border-radius: 10px; display: flex; flex-direction: column; gap: 6px; overflow-wrap: anywhere; }
nav.admin-challenge-list a:hover, nav.admin-challenge-list a[aria-current="true"] { border-color: rgba(255,255,255,.55); background: rgba(255,255,255,.08); }
.admin-challenge-link small { opacity: .65; }
.admin-challenge-editor { min-width: 0; }
.admin-challenge-editor h3 { overflow-wrap: anywhere; }
@media (max-width: 760px) {
 .admin-challenge-workspace { grid-template-columns: minmax(0,1fr); }
 .admin-challenge-sidebar { position: static; }
 nav.admin-challenge-list { max-height: 240px; }
}

.challenge-search { display: flex; align-items: end; gap: 12px; max-width: 640px; width: 100%; }
.challenge-search .panel__field { flex: 1; min-width: 0; }
.challenge-search input { width: 100%; }

/* Keep completed and unfinished cards identical in size. */
.challenge-card { height: 224px; min-width: 0; box-sizing: border-box; }
.challenge-card .challenge-card-header { flex-direction: row; }
.challenge-card-header h2 {
  min-width: 0;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.challenge-card > .challenge-completed { margin: 0; align-self: flex-start; }
.challenge-card > .challenge-btn { margin-top: auto; flex-shrink: 0; }

/* Let toolbar rows grow naturally; never squeeze controls into the cards. */
.challenges-container {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  gap: 24px;
  box-sizing: border-box;
}
.challenge-toolbar { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 16px; }
.challenge-toolbar .challenge-search { flex: 1 1 320px; margin: 0; min-width: 0; }
.challenge-toolbar .challenge-search button,
.challenge-toolbar .challenge-filter { flex-shrink: 0; min-height: 42px; margin: 0; line-height: 1.25; white-space: nowrap; }
.challenge-toolbar .challenge-filter { align-self: flex-end; }
.challenge-toolbar input { min-height: 42px; }
@media (max-width: 480px) {
  .challenge-toolbar .challenge-search { flex-basis: 100%; }
}

/* Keep account panels below navigation and inside the visible screen. */
body:has(main .signup), body:has(main .login) {
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}
body:has(main .signup) > nav, body:has(main .login) > nav { flex: 0 0 auto; }
main:has(div.signup), main:has(div.login) {
  position: static;
  left: auto;
  top: auto;
  transform: none;
  width: 100%;
  flex: 1 1 0;
  min-height: 0;
  margin: 0;
  padding: 16px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  place-items: center;
  overflow: hidden;
}
main .signup, main .login {
  width: min(520px, 100%);
  max-height: 100%;
  margin: 0;
  padding: 24px;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  overflow-wrap: anywhere;
}
.signup .account-name { font-size: 1.25rem; }
.signup .account-codes { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.signup .account-codes > div { border-color: rgba(255,255,255,.16); background: rgba(255,255,255,.03); }
.signup .account-code { margin: 8px 0; font-size: 1.75rem; letter-spacing: .08em; }
.signup .account-codes p:not(.account-code), .signup .account-hint { font-size: .85rem; line-height: 1.45; }
.signup .account-continue { flex-shrink: 0; min-height: 42px; box-sizing: border-box; }
@media (max-width: 480px) {
  .signup .account-codes { grid-template-columns: minmax(0,1fr); }
  main .signup, main .login { padding: 20px; }
}

main .signup > *, main .login > * { flex-shrink: 0; }

.admin-nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  margin-top: 12px;
  text-decoration: none;
  transition: background .2s, border-color .2s;
}
.admin-nav-button:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.3); }
.admin-nav-button:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

.admin--challenge-editor button {
  min-height: 42px;
  transition: background .2s, border-color .2s;
}
.admin--challenge-editor button:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.3);
}
.admin--challenge-editor button:focus-visible,
nav.admin-challenge-list a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
nav.admin-challenge-list a { border-radius: 13px; transition: background .2s, border-color .2s; }
nav.admin-challenge-list a[aria-current="true"] {
  background: rgba(100,220,140,.08);
  border-color: rgba(100,220,140,.5);
}

.home-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

.login.admin-login { max-width: 420px; gap: 16px; }

.admin.admin--challenge-create { width: min(640px, 100%); }

a.challenge-card { color: var(--primary); text-decoration: none; }
a.challenge-card:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; }
.challenge-card > .challenge-btn { display: block; text-align: center; }

.admin button:disabled { opacity: .45; cursor: not-allowed; }

.challenge-hints { display: grid; gap: 12px; }
.challenge-hints h3 { margin: 0; }
.challenge-hint { border: 1px solid rgba(255,255,255,.16); border-radius: 13px; background: rgba(20,20,20,.4); }
.challenge-hint summary { padding: 12px 16px; cursor: pointer; font-weight: 600; }
.challenge-hint summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 13px; }
.challenge-hint > p { padding: 0 16px 16px; white-space: pre-wrap; overflow-wrap: anywhere; }
.challenge-hint[open] { border-color: rgba(255,255,255,.3); }

.challenge-detail:has(.challenge-hints) { width: min(960px, 100%); }
.challenge-content { display: grid; grid-template-columns: minmax(0,1fr); gap: 24px; align-items: start; }
.challenge-content:has(.challenge-hints) { grid-template-columns: minmax(0,1.5fr) minmax(240px,1fr); }
.challenge-description { min-width: 0; }
.challenge-description p { white-space: pre-wrap; overflow-wrap: anywhere; }
@media (max-width: 700px) {
  .challenge-content:has(.challenge-hints) { grid-template-columns: minmax(0,1fr); }
}

/* Match the simple typography and spacing used on the home page. */
.challenges-coming { width: min(640px, 100%); margin: 64px auto; text-align: center; }
.challenges-coming h1 { font-size: clamp(1.4rem, 4vw, 2rem); line-height: 1.4; }
.challenges-coming p { margin: 16px 0; opacity: .7; }