.challenges-page {
  display: grid;
  gap: 18px;
  padding-bottom: 104px;
  color: var(--theme-text);
}

.challenges-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(24px, 6vw, 72px);
  align-items: end;
  min-height: 270px;
  padding: clamp(26px, 5vw, 54px);
  overflow: hidden;
  border: 1px solid var(--rvk-hairline);
  border-radius: var(--rvk-card-radius, 22px);
  background:
    radial-gradient(circle at 88% 4%, color-mix(in srgb, var(--theme-accent) 20%, transparent), transparent 34%),
    linear-gradient(145deg, color-mix(in srgb, var(--theme-surface) 94%, #fff 6%), var(--theme-page));
  box-shadow: 0 24px 60px color-mix(in srgb, #000 32%, transparent);
}

.challenges-hero::before,
.challenges-hero::after {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--theme-text) 9%, transparent);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.challenges-hero::before {
  top: -136px;
  right: -70px;
  width: 330px;
  height: 330px;
}

.challenges-hero::after {
  top: -72px;
  right: -6px;
  width: 200px;
  height: 200px;
}

.challenges-hero-copy,
.challenges-month-status {
  position: relative;
  z-index: 1;
}

.challenges-hero .eyebrow,
.challenge-card-copy > p,
.challenge-submit-heading .eyebrow,
.challenge-details-body .eyebrow,
.challenge-details-hero > span {
  margin: 0;
  color: var(--theme-muted);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

#app .challenges-hero h2 {
  margin: 10px 0 0;
  color: var(--theme-text);
  font-size: clamp(48px, 8vw, 84px);
  font-weight: 920;
  letter-spacing: -0.065em;
  line-height: 0.86;
  text-transform: uppercase;
}

.challenges-hero-copy > p:last-child {
  max-width: 620px;
  margin: 21px 0 0;
  color: var(--theme-muted);
  font-size: clamp(14px, 1.7vw, 17px);
  line-height: 1.55;
}

.challenges-month-status {
  display: grid;
  min-width: 210px;
  border: 1px solid var(--rvk-hairline);
  border-radius: 18px;
  background: color-mix(in srgb, var(--theme-surface) 84%, transparent);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

.challenges-month-status > div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: end;
  padding: 17px 19px;
}

.challenges-month-status > div + div {
  border-top: 1px solid var(--rvk-hairline);
}

.challenges-month-status strong {
  font-size: 42px;
  letter-spacing: -0.07em;
  line-height: 0.84;
}

.challenges-month-status span {
  color: var(--theme-muted);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.1em;
  line-height: 1.3;
  text-transform: uppercase;
}

.challenges-overview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  overflow: hidden;
  border: 1px solid var(--rvk-hairline);
  border-radius: 17px;
  background: var(--rvk-surface-quiet, var(--theme-surface));
}

.challenges-overview > div {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 16px 19px;
}

.challenges-overview > div + div {
  border-left: 1px solid var(--rvk-hairline);
}

.challenges-overview span {
  overflow: hidden;
  color: var(--theme-muted);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.challenges-overview strong {
  font-size: 18px;
  letter-spacing: -0.025em;
}

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

.challenge-card {
  position: relative;
  display: grid;
  gap: 18px;
  min-width: 0;
  padding: clamp(20px, 3vw, 26px);
  overflow: hidden;
  border: 1px solid var(--rvk-hairline);
  border-radius: var(--rvk-card-radius, 22px);
  background:
    radial-gradient(circle at 102% -4%, color-mix(in srgb, var(--challenge-accent, var(--theme-accent)) 16%, transparent), transparent 30%),
    repeating-linear-gradient(115deg, transparent 0 37px, color-mix(in srgb, var(--theme-text) 2.5%, transparent) 38px 39px),
    var(--rvk-surface-quiet, var(--theme-surface));
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--theme-text) 4%, transparent);
}

.challenge-card[data-challenge-style="push-up-sprint"],
.challenge-details-hero[data-challenge-style="push-up-sprint"] { --challenge-accent: #f0f0f0; }
.challenge-card[data-challenge-style="plank-hold"],
.challenge-details-hero[data-challenge-style="plank-hold"] { --challenge-accent: #a6c8ff; }
.challenge-card[data-challenge-style="squat-sprint"],
.challenge-details-hero[data-challenge-style="squat-sprint"] { --challenge-accent: #d8ff9d; }
.challenge-card[data-challenge-style="deadlift-one-rep"],
.challenge-details-hero[data-challenge-style="deadlift-one-rep"] { --challenge-accent: #ffd2a6; }

.challenge-card > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.challenge-card > header span {
  color: var(--theme-muted);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.challenge-card > header em {
  padding: 6px 9px;
  border: 1px solid color-mix(in srgb, var(--challenge-accent) 24%, var(--rvk-hairline));
  border-radius: 999px;
  background: color-mix(in srgb, var(--challenge-accent) 8%, transparent);
  color: var(--theme-text);
  font-size: 9px;
  font-style: normal;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.challenge-card-mark {
  width: max-content;
  max-width: 100%;
  color: var(--theme-text);
  font-size: clamp(52px, 8vw, 88px);
  font-weight: 950;
  letter-spacing: -0.075em;
  line-height: 0.8;
  white-space: nowrap;
}

.challenge-card-copy {
  display: grid;
  gap: 7px;
}

#app .challenge-card-copy h3 {
  margin: 0;
  color: var(--theme-text);
  font-size: clamp(24px, 3.4vw, 34px);
  letter-spacing: -0.045em;
  line-height: 1;
}

.challenge-card-copy > span {
  min-height: 44px;
  color: var(--theme-muted);
  font-size: 13px;
  line-height: 1.55;
}

.challenge-empty-board {
  display: flex;
  gap: 12px;
  align-items: center;
  min-height: 54px;
  padding: 12px 14px;
  border: 1px solid var(--rvk-hairline);
  border-radius: 14px;
  background: color-mix(in srgb, var(--theme-page) 58%, transparent);
}

.challenge-empty-board > span {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  place-items: center;
  border-radius: 11px;
  background: color-mix(in srgb, var(--theme-text) 7%, transparent);
}

.challenge-empty-board .nav-icon { width: 17px; }
.challenge-empty-board div { display: grid; gap: 2px; }
.challenge-empty-board strong { font-size: 12px; }
.challenge-empty-board small { color: var(--theme-muted); font-size: 10px; }

.challenge-mini-board {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--rvk-hairline);
  border-radius: 14px;
  background: var(--rvk-hairline);
  list-style: none;
}

.challenge-mini-board li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 9px;
  align-items: center;
  min-height: 44px;
  padding: 0 13px;
  background: var(--theme-page);
}

.challenge-mini-board li > span {
  color: var(--theme-muted);
  font-size: 10px;
  font-weight: 900;
}

.challenge-mini-board strong {
  overflow: hidden;
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.challenge-board-name { display: grid; min-width: 0; gap: 2px; padding: 9px 0; }
.challenge-board-name small { color: var(--theme-muted); font-size: 9px; font-weight: 600; }

.challenge-mini-board em {
  color: var(--theme-text);
  font-size: 12px;
  font-style: normal;
  font-weight: 850;
}

.challenge-card-actions {
  display: grid;
  grid-template-columns: minmax(86px, 0.65fr) minmax(0, 1.35fr);
  gap: 9px;
}

#app .challenge-card-actions button,
#app .challenge-details-join,
#app .challenge-submit-button {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 15px;
  border: 1px solid var(--rvk-hairline-strong, var(--rvk-hairline));
  border-radius: var(--rvk-control-radius, 15px);
  background: transparent;
  color: var(--theme-text);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

#app .challenge-card-actions button:last-child,
#app .challenge-details-join,
#app .challenge-submit-button {
  border-color: var(--theme-text);
  background: var(--theme-text);
  color: var(--theme-page);
}

.challenge-card-actions .nav-icon,
.challenge-details-join .nav-icon { width: 15px; }

.challenges-verification-note {
  display: flex;
  gap: 13px;
  align-items: center;
  padding: 18px 20px;
  border: 1px solid var(--rvk-hairline);
  border-radius: 17px;
  background: var(--rvk-surface-quiet, var(--theme-surface));
}

.challenges-verification-note > .nav-icon {
  width: 22px;
  flex: 0 0 22px;
}

.challenges-verification-note div { display: grid; gap: 3px; }
.challenges-verification-note strong { font-size: 13px; }
.challenges-verification-note p { margin: 0; color: var(--theme-muted); font-size: 11px; line-height: 1.45; }

.challenge-modal-backdrop {
  z-index: 620;
  background: color-mix(in srgb, #000 86%, transparent) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.challenge-modal-backdrop[hidden] { display: none !important; }

#app .challenge-modal {
  width: min(720px, calc(100vw - 28px));
  max-height: min(880px, calc(100dvh - 30px));
  overflow: auto;
  border: 1px solid var(--rvk-hairline-strong, var(--rvk-hairline));
  border-radius: 24px;
  background: var(--theme-page);
  color: var(--theme-text);
}

.challenge-modal > header {
  position: sticky;
  top: 0;
  z-index: 4;
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  gap: 12px;
  align-items: center;
  min-height: 68px;
  padding: 0 16px;
  border-bottom: 1px solid var(--rvk-hairline);
  background: color-mix(in srgb, var(--theme-page) 92%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.challenge-modal > header p {
  margin: 0;
  font-size: 13px;
  font-weight: 850;
  text-align: center;
}

#app .challenge-modal-back {
  display: grid;
  width: 42px;
  height: 42px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--rvk-hairline);
  border-radius: 14px;
  background: var(--rvk-surface-quiet, var(--theme-surface));
  color: var(--theme-text);
}

.challenge-modal-back .nav-icon { width: 19px; }

.challenge-details-hero {
  position: relative;
  display: grid;
  gap: 9px;
  min-height: 250px;
  align-content: end;
  padding: 32px;
  overflow: hidden;
  border-bottom: 1px solid var(--rvk-hairline);
  background:
    radial-gradient(circle at 98% 4%, color-mix(in srgb, var(--challenge-accent) 20%, transparent), transparent 34%),
    repeating-linear-gradient(115deg, transparent 0 38px, color-mix(in srgb, var(--theme-text) 2.5%, transparent) 39px 40px),
    var(--rvk-surface-quiet, var(--theme-surface));
}

.challenge-details-hero > strong {
  position: absolute;
  top: 26px;
  right: 28px;
  color: color-mix(in srgb, var(--theme-text) 92%, transparent);
  font-size: clamp(46px, 9vw, 78px);
  font-weight: 950;
  letter-spacing: -0.075em;
  line-height: 0.8;
}

#app .challenge-details-hero h2 {
  max-width: 520px;
  margin: 0;
  font-size: clamp(35px, 6vw, 56px);
  letter-spacing: -0.055em;
  line-height: 0.92;
}

.challenge-details-hero p {
  max-width: 520px;
  margin: 3px 0 0;
  color: var(--theme-muted);
  font-size: 14px;
  line-height: 1.5;
}

.challenge-details-body,
.challenge-submit-modal form {
  display: grid;
  gap: 22px;
  padding: 26px;
}

.challenge-details-body section { display: grid; gap: 13px; }
.challenge-details-body ol { display: grid; gap: 1px; margin: 0; padding: 0; overflow: hidden; border: 1px solid var(--rvk-hairline); border-radius: 16px; background: var(--rvk-hairline); list-style: none; }
.challenge-details-body ol li { display: grid; grid-template-columns: 34px 1fr; gap: 11px; align-items: start; padding: 15px; background: var(--rvk-surface-quiet, var(--theme-surface)); }
.challenge-details-body ol li > span { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 10px; background: color-mix(in srgb, var(--theme-text) 7%, transparent); }
.challenge-details-body ol .nav-icon { width: 16px; }
.challenge-details-body ol p { margin: 3px 0 0; color: var(--theme-muted); font-size: 12px; line-height: 1.5; }
.challenge-details-board-heading { display: flex; gap: 18px; align-items: end; justify-content: space-between; }
.challenge-details-board-heading h3 { margin: 5px 0 0; font-size: 27px; letter-spacing: -0.045em; }
.challenge-details-board-heading > span { color: var(--theme-muted); font-size: 10px; font-weight: 800; }

.challenge-submit-heading { display: grid; gap: 8px; }
#app .challenge-submit-heading h2 { margin: 0; font-size: clamp(32px, 6vw, 48px); letter-spacing: -0.055em; line-height: 0.95; }
.challenge-submit-heading > p:last-child { margin: 0; color: var(--theme-muted); font-size: 13px; line-height: 1.5; }
.challenge-score-field,
.challenge-note-field { display: grid; gap: 8px; color: var(--theme-text); font-size: 11px; font-weight: 850; letter-spacing: 0.05em; text-transform: uppercase; }
.challenge-score-field > div { display: grid; grid-template-columns: 1fr auto; align-items: center; overflow: hidden; border: 1px solid var(--rvk-hairline-strong, var(--rvk-hairline)); border-radius: var(--rvk-control-radius, 15px); background: var(--rvk-surface-quiet, var(--theme-surface)); }
#app .challenge-score-field input { width: 100%; min-height: 60px; padding: 0 16px; border: 0; background: transparent; color: var(--theme-text); font-size: 25px; font-weight: 850; outline: none; }
.challenge-score-field em { padding: 0 16px; color: var(--theme-muted); font-size: 11px; font-style: normal; }

.challenge-evidence-field {
  display: grid;
  grid-template-columns: 40px 1fr 20px;
  gap: 12px;
  align-items: center;
  min-height: 76px;
  padding: 0 16px;
  border: 1px solid var(--rvk-hairline-strong, var(--rvk-hairline));
  border-radius: var(--rvk-control-radius, 15px);
  background: var(--rvk-surface-quiet, var(--theme-surface));
  cursor: pointer;
}

.challenge-evidence-field input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.challenge-evidence-field > .nav-icon:first-of-type { width: 21px; }
.challenge-evidence-field > .nav-icon:last-of-type { width: 17px; color: var(--theme-muted); }
.challenge-evidence-field span { display: grid; gap: 4px; min-width: 0; }
.challenge-evidence-field strong { font-size: 13px; }
.challenge-evidence-field small { overflow: hidden; color: var(--theme-muted); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
#app .challenge-note-field textarea { min-height: 92px; padding: 14px 15px; resize: vertical; border: 1px solid var(--rvk-hairline-strong, var(--rvk-hairline)); border-radius: var(--rvk-control-radius, 15px); background: var(--rvk-surface-quiet, var(--theme-surface)); color: var(--theme-text); font: inherit; font-size: 14px; font-weight: 600; letter-spacing: 0; line-height: 1.45; outline: none; text-transform: none; }
.challenge-note-field > span { display: flex; justify-content: space-between; }
.challenge-note-field small { color: var(--theme-muted); font-size: 9px; }
.challenge-submit-safety { margin: 0; color: var(--theme-muted); font-size: 10px; line-height: 1.5; }
.challenge-submit-status { min-height: 16px; margin: -8px 0 0; color: var(--theme-muted); font-size: 11px; line-height: 1.4; }
.challenge-proof-step { display: grid; gap: 20px; }
.challenge-identity { min-width: 0; margin: 0; padding: 0; border: 0; }
.challenge-identity legend { padding: 0 0 10px; font-size: 12px; font-weight: 800; color: var(--theme-text); }
.challenge-identity-options { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; padding: 4px; border: 1px solid var(--theme-border); border-radius: 14px; background: var(--theme-surface); }
.challenge-identity-options label { position: relative; display: grid; place-items: center; min-height: 44px; padding: 7px; border-radius: 10px; color: var(--theme-muted); font-size: 11px; font-weight: 800; text-align: center; cursor: pointer; }
.challenge-identity-options input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.challenge-identity-options label:has(:checked) { color: var(--theme-on-accent); background: var(--theme-accent); }
:root[data-app-theme] #app .challenge-identity-options label:has(:checked) > span { color: var(--theme-on-accent) !important; }
.challenge-identity-options label:has(:focus-visible) { outline: 2px solid var(--theme-accent); outline-offset: 3px; }
.challenge-identity-profile { margin: 12px 0 0; font-size: 13px; font-weight: 750; color: var(--theme-text); overflow-wrap: anywhere; }
.challenge-alias-field { display: grid; gap: 8px; margin-top: 14px; color: var(--theme-text); font-size: 12px; font-weight: 750; }
#app .challenge-alias-field input { width: 100%; min-width: 0; min-height: 48px; padding: 12px 14px; border: 1px solid var(--theme-border); border-radius: 14px; background: var(--theme-surface); color: var(--theme-text); font: inherit; font-size: 16px; }
.challenge-alias-field small, .challenge-identity-privacy { color: var(--theme-muted); font-size: 11px; font-weight: 500; line-height: 1.5; }
.challenge-identity-privacy { margin: 12px 0 0; }
.challenge-name-error { margin: 10px 0 0; color: var(--theme-text); font-size: 12px; font-weight: 750; line-height: 1.5; }
.challenge-identity [hidden] { display: none !important; }
.challenge-proof-step[hidden], .challenge-qualification[hidden], .admin-challenge-review[hidden] { display: none !important; }
.challenge-qualification { padding: 20px; border: 1px solid var(--rvk-hairline-strong, var(--rvk-hairline)); border-radius: 18px; background: color-mix(in srgb, var(--theme-text) 5%, var(--theme-page)); }
.challenge-qualification > strong { color: var(--theme-text); font-size: 19px; letter-spacing: -.035em; }
.challenge-qualification p { margin: 8px 0 0; color: var(--theme-muted); font-size: 13px; line-height: 1.6; }
.challenge-qualification > div { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--rvk-hairline); color: var(--theme-text); font-size: 12px; }
.challenge-qualification > div span { color: var(--theme-muted); }

.admin-challenges-page,
.admin-challenge-reviewed { display: grid; gap: 20px; }
.admin-challenge-reviewed { margin-top: 24px; }
.admin-challenge-list { display: grid; gap: 10px; }
.admin-challenge-submission { display: grid; grid-template-columns: minmax(140px, 1.2fr) minmax(150px, 1fr) minmax(100px, .6fr) minmax(115px, .7fr) auto; gap: 18px; align-items: center; padding: 17px 18px; border: 1px solid var(--admin-line, #28282a); border-radius: 17px; background: var(--admin-panel, #0b0b0c); }
.admin-challenge-submission > div:not(.admin-challenge-athlete):not(.admin-challenge-actions) { display: grid; gap: 4px; }
.admin-challenge-submission small { color: #8e8e93; font-size: 9px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.admin-challenge-submission strong { overflow: hidden; color: #fff; font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.admin-challenge-athlete { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 11px; align-items: center; }
.admin-challenge-athlete > span { display: grid; width: 42px; height: 42px; place-items: center; border: 1px solid #303034; border-radius: 50%; background: #151517; color: #fff; font-weight: 850; }
.admin-challenge-athlete > div { display: grid; gap: 4px; min-width: 0; }
.admin-challenge-actions { display: flex; gap: 7px; align-items: center; justify-content: flex-end; }
#app .admin-challenge-actions button { display: flex; gap: 6px; align-items: center; justify-content: center; min-height: 38px; padding: 0 11px; border: 1px solid #343438; border-radius: 11px; background: #111113; color: #fff; font-size: 10px; font-weight: 850; }
#app .admin-challenge-actions button.is-approve { border-color: #fff; background: #fff; color: #050505; }
#app .admin-challenge-actions button.is-reject { color: #c7c7cb; }
.admin-challenge-actions .nav-icon { width: 15px; }
.admin-challenge-status { padding: 6px 9px; border: 1px solid #323236; border-radius: 999px; color: #b4b4b8; font-size: 9px; font-weight: 850; text-transform: uppercase; }
.admin-challenge-review { display: grid; grid-column: 1 / -1; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 24px; padding-top: 20px; border-top: 1px solid var(--admin-line, #28282a); }
.admin-challenge-video { min-width: 0; }
.admin-challenge-video video { display: block; width: 100%; max-height: 480px; aspect-ratio: 4 / 3; border-radius: 14px; background: #000; object-fit: contain; }
.admin-challenge-video a { display: inline-block; margin-top: 10px; color: #ccc; font-size: 12px; text-decoration: underline; }
.admin-challenge-video a[hidden] { display: none; }
.admin-challenge-review-context { display: grid; align-content: start; gap: 14px; min-width: 0; color: #eee; font-size: 13px; line-height: 1.6; }
.admin-challenge-review-context ul { margin: 0; padding-left: 20px; }
.admin-challenge-review-context li + li { margin-top: 7px; }
.admin-challenge-note { display: grid; gap: 6px; margin: 0; padding: 14px; border-radius: 12px; background: #171719; overflow-wrap: anywhere; }
.admin-challenge-confirm { display: flex; gap: 10px; align-items: start; }
#app .admin-challenge-confirm input { flex: 0 0 18px; width: 18px; height: 18px; min-height: 0; margin-top: 3px; accent-color: #fff; }
.admin-challenge-feedback { display: grid; gap: 6px; }
#app .admin-challenge-feedback textarea { width: 100%; min-height: 72px; padding: 12px; border: 1px solid #343438; border-radius: 12px; background: #101012; color: #fff; resize: vertical; font: inherit; }
.admin-challenge-review-context [role="status"] { margin: 0; color: #bbb; }
#app .admin-challenge-actions button:disabled { opacity: .4; cursor: not-allowed; }
@media (max-width: 1100px) {
  .admin-challenge-submission { grid-template-columns: 1fr 1fr; }
  .admin-challenge-actions { justify-content: flex-start; grid-column: 1 / -1; }
}

@media (min-width: 1100px) {
  :root:not(.native-app) .challenges-page { padding-bottom: 24px; }
  :root:not(.native-app) .challenges-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .challenges-page { gap: 14px; }
  .challenges-hero { grid-template-columns: 1fr; gap: 24px; min-height: 0; padding: 24px; }
  #app .challenges-hero h2 { font-size: clamp(46px, 15vw, 67px); }
  .challenges-month-status { grid-template-columns: 1fr 1fr; min-width: 0; }
  .challenges-month-status > div + div { border-top: 0; border-left: 1px solid var(--rvk-hairline); }
  .challenges-month-status strong { font-size: 36px; }
  .challenges-overview > div { padding: 13px 11px; }
  .challenges-overview strong { font-size: 15px; }
  .challenges-grid { grid-template-columns: 1fr; }
  .challenge-card { padding: 20px; }
  .challenge-card-mark { font-size: clamp(58px, 21vw, 82px); }
  .challenge-card-copy > span { min-height: 0; }
  #app .challenge-modal { width: 100%; height: 100dvh; max-height: 100dvh; border: 0; border-radius: 0; }
  .challenge-details-hero { min-height: 240px; padding: 25px 21px; }
  .challenge-details-hero > strong { top: 26px; right: 20px; }
  .challenge-details-body,
  .challenge-submit-modal form { padding: 21px; }
  .admin-challenge-submission { grid-template-columns: 1fr 1fr; }
  .admin-challenge-athlete,
  .admin-challenge-actions { grid-column: 1 / -1; }
  .admin-challenge-actions { justify-content: stretch; }
  .admin-challenge-review { grid-template-columns: 1fr; }
  #app .admin-challenge-actions button { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .challenge-card { transition: none; }
}