:root {
  --bg: #eef8ef;
  --bg-deep: #d7edd7;
  --surface: rgba(255, 255, 255, 0.75);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --border: rgba(98, 146, 104, 0.22);
  --text: #173622;
  --muted: #5d7865;
  --primary: #4e9461;
  --primary-deep: #2e6a44;
  --primary-soft: #e6f4e5;
  --accent: #f6b85b;
  --danger: #d95b67;
  --shadow: 0 24px 70px rgba(53, 98, 62, 0.12);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI Variable", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f5fbf2 0%, #e7f6e8 35%, #e1f0e0 100%);
  min-height: 100vh;
}

.page-backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% 20%, rgba(246, 184, 91, 0.16), transparent 22%),
    radial-gradient(circle at 82% 14%, rgba(112, 188, 128, 0.18), transparent 20%),
    radial-gradient(circle at 50% 100%, rgba(120, 180, 139, 0.18), transparent 28%);
}

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

.shell {
  position: relative;
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 44px;
}

.content-shell {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.topbar {
  position: sticky;
  top: 18px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: linear-gradient(135deg, #63b67c, #88ca99);
  color: white;
  font-size: 1.4rem;
  font-weight: 700;
  box-shadow: 0 18px 26px rgba(76, 134, 91, 0.25);
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.brand-title,
.hero-card h2,
.glass-card h3,
.login-copy h1,
.login-panel h2 {
  margin: 0;
  font-family: "Georgia", "STKaiti", "KaiTi", serif;
  letter-spacing: 0.02em;
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.topnav a,
.ghost-link {
  color: var(--primary-deep);
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.topnav a:hover,
.ghost-link:hover {
  background: rgba(78, 148, 97, 0.12);
  transform: translateY(-1px);
}

.hero-card,
.glass-card,
.login-panel,
.login-copy {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.hero-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 30px;
  animation: rise-in 0.7s ease both;
}

.hero-card::after,
.glass-card::after,
.login-panel::after,
.login-copy::after {
  content: "";
  position: absolute;
  inset: auto -12% -50% auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(246, 184, 91, 0.18), transparent 70%);
}

.hero-badges,
.chip-row,
.feature-list,
.action-grid,
.task-status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill,
.chip,
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(78, 148, 97, 0.16);
}

.status-approved {
  background: rgba(78, 148, 97, 0.14);
  color: var(--primary-deep);
}

.status-rejected {
  background: rgba(217, 91, 103, 0.14);
  color: #9b3144;
}

.lead,
.muted,
.mini-note,
label span,
.meta-grid span,
.data-table th {
  color: var(--muted);
}

.lead {
  font-size: 1.02rem;
  line-height: 1.7;
}

.muted,
.mini-note,
.feedback-box {
  line-height: 1.6;
}

.flash-stack {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.flash {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 14px 34px rgba(88, 132, 95, 0.08);
}

.flash-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
}

.flash-error .flash-dot {
  background: var(--danger);
}

.flash-success .flash-dot {
  background: #58a46b;
}

.flash p {
  margin: 0;
}

.card-grid,
.stats-grid,
.task-grid,
.review-grid {
  display: grid;
  gap: 20px;
}

.activity-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.group-grid,
.review-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.task-grid {
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
}

.stats-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.page-grid,
.two-column-layout {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 22px;
}

.admin-activity-grid {
  grid-template-columns: 1fr;
}

.activity-actions,
.task-editor-list {
  display: grid;
  gap: 14px;
}

.activity-catalog-panel {
  overflow: hidden;
}

.activity-catalog-head {
  margin-bottom: 20px;
}

.published-activity-list {
  display: grid;
  gap: 20px;
}

.published-activity-card {
  position: relative;
  display: grid;
  gap: 18px;
  padding: 24px;
  border-radius: 30px;
  background:
    radial-gradient(circle at 100% 0%, rgba(241, 193, 107, 0.18), transparent 28%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(236, 248, 239, 0.9));
  border: 1px solid rgba(78, 148, 97, 0.16);
  box-shadow: 0 20px 38px rgba(86, 127, 93, 0.12);
}

.published-activity-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 24px;
  width: 120px;
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(96, 175, 114, 0.9), rgba(241, 193, 107, 0.82));
}

.published-activity-hero,
.published-settings-form,
.published-delete-form,
.published-toggle-grid {
  display: grid;
  gap: 16px;
}

.published-activity-hero {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
}

.published-activity-title-wrap {
  min-width: 0;
}

.published-activity-title {
  margin: 4px 0 0;
  font-size: 1.8rem;
  line-height: 1.1;
}

.published-activity-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.published-activity-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
}

.activity-metric-card {
  min-width: 0;
  padding: 16px 18px;
  border-radius: 22px;
  border: 1px solid rgba(78, 148, 97, 0.12);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.68);
}

.activity-metric-card span {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.activity-metric-card strong {
  display: block;
  margin-top: 8px;
  line-height: 1.45;
  color: var(--primary-deep);
  font-size: 1rem;
  word-break: break-word;
}

.published-settings-form {
  padding: 18px;
  border-radius: 26px;
  background: linear-gradient(180deg, rgba(247, 252, 248, 0.94), rgba(229, 244, 233, 0.88));
  border: 1px solid rgba(78, 148, 97, 0.14);
}

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

.published-toggle-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(78, 148, 97, 0.12);
}

.published-toggle-copy {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.published-toggle-copy strong {
  font-size: 1rem;
  color: var(--primary-deep);
}

.published-toggle-copy span {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--muted);
}

.published-toggle-card input {
  width: 20px;
  height: 20px;
  padding: 0;
  margin: 0;
  flex: 0 0 auto;
}

.published-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.published-action-row .btn {
  flex: 1 1 220px;
  justify-content: center;
}

.published-delete-form .btn {
  width: 100%;
  justify-content: center;
}

.task-editor-card {
  gap: 16px;
}

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

.editor-thumb,
.empty-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 20px;
  border: 1px solid rgba(78, 148, 97, 0.16);
  background: rgba(255, 255, 255, 0.6);
}

.empty-thumb {
  display: grid;
  place-items: center;
  color: var(--muted);
}

.align-end-checkbox {
  align-self: end;
}

@media (max-width: 720px) {
  .editor-preview-grid {
    grid-template-columns: 1fr;
  }
}

.users-admin-grid,
.presence-admin-grid,
.review-live-grid {
  grid-template-columns: 1fr 1fr;
}

.bulk-toolbar {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 14px;
  margin-bottom: 18px;
  align-items: end;
}

.leaderboard-hero {
  align-items: stretch;
}

.hero-split-main {
  display: grid;
  gap: 14px;
  flex: 1 1 55%;
}

.hero-side-rank {
  width: min(420px, 100%);
  padding: 18px 20px;
}

.inset-rank-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(231, 248, 233, 0.82));
}

.compact-head {
  margin-bottom: 12px;
}

.task-carousel-shell {
  display: grid;
  gap: 18px;
}

.task-carousel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.carousel-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.task-flip-book {
  position: relative;
  min-height: 720px;
}

.task-page {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transform: perspective(1200px) rotateY(10deg) translateX(24px) scale(0.98);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.task-page.is-active {
  opacity: 1;
  pointer-events: auto;
  transform: perspective(1200px) rotateY(0deg) translateX(0) scale(1);
  z-index: 2;
}

.task-page.is-left {
  transform: perspective(1200px) rotateY(-12deg) translateX(-26px) scale(0.97);
}

.task-page-inner {
  display: grid;
  gap: 18px;
}

.task-page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 22px;
}

.task-page-content {
  display: grid;
  gap: 14px;
  align-content: start;
}

.task-page-media {
  display: grid;
  gap: 12px;
}

.is-hidden {
  display: none !important;
}

.clue-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 24px;
}

.clue-modal.is-open {
  display: flex;
}

.clue-modal-backdrop {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(24, 57, 34, 0.78), rgba(76, 148, 97, 0.48), rgba(246, 184, 91, 0.42));
  backdrop-filter: blur(16px);
}

.clue-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  display: grid;
  gap: 12px;
}

.clue-close-btn {
  justify-self: end;
}

.clue-gradient-panel {
  padding: 18px;
  border-radius: 30px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(223, 245, 228, 0.86), rgba(255, 241, 214, 0.9));
  box-shadow: 0 30px 90px rgba(20, 51, 29, 0.28);
}

.clue-gradient-panel img {
  width: 100%;
  border-radius: 24px;
  max-height: 72vh;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.72);
}

.review-live-grid .review-grid {
  grid-template-columns: 1fr;
}

.presence-item,
.activity-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.inset-rank-card::after,
.hero-side-rank::after {
  display: none;
}

@media (max-width: 1080px) {
  .leaderboard-hero,
  .task-page-grid,
  .users-admin-grid,
  .presence-admin-grid,
  .review-live-grid {
    grid-template-columns: 1fr;
  }

  .published-toggle-grid {
    grid-template-columns: 1fr;
  }

  .hero-side-rank {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .bulk-toolbar,
  .task-carousel-head,
  .carousel-controls,
  .presence-item,
  .activity-actions,
  .published-activity-hero,
  .published-toggle-card,
  .published-action-row {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .published-activity-metrics,
  .published-toggle-grid {
    grid-template-columns: 1fr;
  }

  .published-activity-badges {
    justify-content: flex-start;
  }

  .task-flip-book {
    min-height: 900px;
  }
}

.image-library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.image-library-card {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.image-library-thumb {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(78, 148, 97, 0.14);
}

.image-library-body {
  display: grid;
  gap: 12px;
}

.image-library-path {
  word-break: break-all;
}

.image-library-actions {
  align-items: center;
}

.compact-stack-list {
  gap: 8px;
}

.compact-stack-item {
  padding: 10px 12px;
}




/* Emergency Restore: shared UI primitives */
.glass-card,
.form-panel,
.table-panel,
.quick-panel {
  padding: 24px;
  animation: rise-in 0.7s ease both;
}

.activity-card h3,
.task-card h3,
.review-card h3,
.group-card h3,
.stat-card strong {
  margin: 0 0 10px;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.meta-grid strong {
  display: block;
  color: var(--primary-deep);
  font-size: 1.05rem;
}

.progress-line {
  width: 100%;
  height: 12px;
  margin: 18px 0 12px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(78, 148, 97, 0.12);
}

.progress-line div {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #62b176, #8ac798, #f1c16b);
}

.card-footer,
.card-topline,
.section-head,
.stack-item,
.builder-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.section-head {
  margin-bottom: 18px;
}

.tight-head {
  margin-top: 8px;
}

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

.stack-item {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(78, 148, 97, 0.14);
}

.stack-item-block {
  align-items: flex-start;
}

.form-stack,
.compact-form {
  display: grid;
  gap: 14px;
}

.form-grid {
  display: grid;
  gap: 14px;
}

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

.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.full-span {
  grid-column: 1 / -1;
}

label {
  display: grid;
  gap: 8px;
}

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

input,
select,
textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(91, 141, 99, 0.22);
  background: rgba(255, 255, 255, 0.88);
  color: var(--text);
  transition: border-color 0.24s ease, box-shadow 0.24s ease, transform 0.24s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(78, 148, 97, 0.5);
  box-shadow: 0 0 0 4px rgba(78, 148, 97, 0.12);
  transform: translateY(-1px);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

button {
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid rgba(91, 141, 99, 0.18);
  background: rgba(255, 255, 255, 0.88);
  color: var(--text);
  cursor: pointer;
}

.btn,
.full-width-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 18px;
  border-radius: 18px;
  border: 1px solid transparent;
  text-decoration: none;
  transition: transform 0.24s ease, box-shadow 0.24s ease, background 0.24s ease, color 0.24s ease;
}

.btn:hover,
.full-width-btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, #63b67c, #7bc58f);
  color: #fff;
  box-shadow: 0 16px 28px rgba(76, 134, 91, 0.22);
}

.btn-secondary {
  background: rgba(230, 244, 229, 0.92);
  border-color: rgba(78, 148, 97, 0.16);
  color: var(--primary-deep);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(78, 148, 97, 0.14);
  color: var(--primary-deep);
}

.btn-danger {
  background: linear-gradient(135deg, #de6d78, #d95b67);
  color: #fff;
  box-shadow: 0 16px 28px rgba(186, 70, 88, 0.18);
}

.small-btn {
  padding: 10px 14px;
  font-size: 0.92rem;
}

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

.spring-copy {
  min-height: 520px;
  background:
    radial-gradient(circle at 16% 20%, rgba(255, 255, 255, 0.88), transparent 42%),
    linear-gradient(145deg, rgba(125, 195, 137, 0.22), rgba(246, 184, 91, 0.18));
}

.admin-copy {
  min-height: 420px;
}

.feature-list {
  margin-top: 26px;
}

.feature-list span,
.info-box,
.feedback-box {
  padding: 10px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(78, 148, 97, 0.12);
}

.panel-glow {
  position: absolute;
  inset: auto auto -50px -30px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(246, 184, 91, 0.25), transparent 68%);
}

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

.task-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.task-description {
  min-height: 50px;
}

.task-media-wrap,
.submission-preview {
  display: grid;
  gap: 10px;
}

.task-media,
.submission-preview img,
.review-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 22px;
  border: 1px solid rgba(78, 148, 97, 0.16);
  box-shadow: 0 12px 30px rgba(86, 127, 93, 0.12);
}

.clue-toggle {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 18px;
  font-size: 1.2rem;
  background: rgba(246, 184, 91, 0.14);
  color: #c88929;
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.clue-toggle.is-ready {
  background: rgba(246, 184, 91, 0.26);
  box-shadow: 0 14px 26px rgba(233, 173, 75, 0.22);
}

.clue-toggle.is-clue-view {
  transform: rotate(-10deg) scale(1.04);
}

.release-note {
  font-size: 0.88rem;
  color: var(--muted);
}

.upload-form,
.inline-form {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
}

.inline-form-wide {
  flex-direction: column;
  align-items: stretch;
}

.visibility-form {
  justify-content: flex-end;
}

.upload-label {
  flex: 1 1 220px;
}

.feedback-box {
  color: var(--text);
}

.leaderboard-card {
  padding: 26px;
}

.rank-table-wrap,
.table-shell {
  overflow-x: auto;
}

.rank-table,
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.rank-table th,
.rank-table td,
.data-table th,
.data-table td {
  padding: 14px 12px;
  border-bottom: 1px solid rgba(78, 148, 97, 0.12);
  text-align: left;
}

.rank-table tbody tr:hover,
.data-table tbody tr:hover {
  background: rgba(78, 148, 97, 0.05);
}

.stat-card {
  min-height: 130px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-card strong {
  font-size: 2rem;
  color: var(--primary-deep);
}

.info-box {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.member-list {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

.member-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.62);
}

.checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.checkbox-row input {
  width: 18px;
  height: 18px;
  padding: 0;
}

.compact-checkbox {
  padding: 0;
}

.task-builder {
  display: grid;
  gap: 16px;
}

.task-builder-card {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.64);
  border: 1px dashed rgba(78, 148, 97, 0.24);
  display: grid;
  gap: 14px;
}

.review-card {
  display: grid;
  gap: 14px;
}

.review-filter-form {
  align-items: end;
}

.review-filter-action {
  justify-content: end;
}

.empty-state {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.68);
  border: 1px dashed rgba(78, 148, 97, 0.24);
  text-align: center;
}

.pulse-highlight {
  animation: pulse-glow 1.8s ease;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-glow {
  0% {
    box-shadow: var(--shadow);
  }
  35% {
    box-shadow: 0 0 0 8px rgba(246, 184, 91, 0.18), var(--shadow);
  }
  100% {
    box-shadow: var(--shadow);
  }
}

@media (max-width: 980px) {
  .topbar,
  .hero-card,
  .page-grid,
  .two-column-layout,
  .login-page,
  .compact-login-page,
  .admin-activity-grid {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .topbar {
    border-radius: 28px;
    align-items: flex-start;
  }

  .topnav {
    width: 100%;
    justify-content: flex-start;
  }

  .login-copy {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - 20px, 1200px);
    padding-top: 18px;
  }

  .topbar,
  .hero-card,
  .glass-card,
  .login-copy,
  .login-panel {
    padding: 20px;
  }

  .card-footer,
  .card-topline,
  .section-head,
  .stack-item,
  .builder-title-row,
  .task-card-head,
  .task-status-row {
    flex-direction: column;
    align-items: stretch;
  }

  .cols-2,
  .cols-3,
  .form-grid,
  .meta-grid {
    grid-template-columns: 1fr;
  }

  .btn,
  .full-width-btn {
    width: 100%;
  }
}

/* Login layout restore */
.login-body {
  min-height: 100vh;
}

.login-page {
  width: min(1200px, calc(100% - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px 0 44px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  gap: 24px;
  align-items: stretch;
}

.compact-login-page {
  grid-template-columns: minmax(320px, 0.95fr) minmax(320px, 0.85fr);
  max-width: 1040px;
}

.login-copy,
.login-panel {
  padding: 30px;
}

.login-copy {
  display: grid;
  gap: 18px;
  align-content: center;
}

.login-panel {
  display: grid;
  gap: 16px;
  align-content: start;
}

.admin-panel {
  align-content: center;
}

.activity-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

@media (max-width: 980px) {
  .login-page,
  .compact-login-page {
    width: min(100% - 24px, 1200px);
    padding: 20px 0 36px;
    grid-template-columns: 1fr;
  }

  .login-copy,
  .login-panel {
    padding: 24px;
  }
}
/* Mobile polish */
input[type="checkbox"],
input[type="radio"] {
  width: 18px;
  height: 18px;
  padding: 0;
  margin: 0;
  border-radius: 6px;
  accent-color: var(--primary);
  box-shadow: none;
  transform: none;
  flex: 0 0 auto;
}

input[type="checkbox"]:focus,
input[type="radio"]:focus {
  outline: 2px solid rgba(78, 148, 97, 0.24);
  outline-offset: 2px;
  box-shadow: none;
}

input[type="file"] {
  padding: 10px 12px;
  border-style: dashed;
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
}

input[type="file"]::file-selector-button {
  margin-right: 12px;
  padding: 9px 14px;
  border: 0;
  border-radius: 999px;
  background: rgba(78, 148, 97, 0.12);
  color: var(--primary-deep);
  cursor: pointer;
}

.table-checkbox {
  justify-self: center;
}

.table-inline-form {
  min-width: 220px;
}

.carousel-controls-bottom {
  display: none;
}

.topnav a {
  flex: 0 0 auto;
  white-space: nowrap;
}

@media (max-width: 980px) {
  .topbar {
    gap: 14px;
  }

  .topnav {
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    justify-content: flex-start;
    padding: 0 4px 4px;
    margin: 0 -4px -4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .topnav::-webkit-scrollbar {
    display: none;
  }

  .published-activity-hero {
    grid-template-columns: 1fr;
  }

  .published-activity-badges {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  body {
    overflow-x: hidden;
  }

  .shell {
    width: min(100% - 16px, 1200px);
    padding-top: 14px;
  }

  .topbar {
    position: static;
    padding: 14px 16px;
    margin-bottom: 18px;
    border-radius: 24px;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }

  .brand-title {
    font-size: 1.08rem;
  }

  .topnav {
    gap: 8px;
  }

  .topnav a,
  .ghost-link {
    padding: 9px 12px;
    font-size: 0.92rem;
  }

  .hero-card,
  .glass-card,
  .login-copy,
  .login-panel {
    padding: 18px;
    border-radius: 22px;
  }

  .hero-card h2,
  .login-copy h1,
  .login-panel h2 {
    font-size: 1.62rem;
    line-height: 1.18;
  }

  .lead {
    font-size: 0.96rem;
    line-height: 1.65;
  }

  .card-topline .status-badge,
  .card-topline .eyebrow,
  .card-footer .mini-note,
  .section-head .mini-note,
  .task-status-row .status-badge,
  .task-status-row .mini-note,
  .hero-badges,
  .chip-row {
    align-self: flex-start;
  }

  .bulk-toolbar,
  .inline-form,
  .table-inline-form,
  .upload-form,
  .task-carousel-head {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .carousel-controls {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: nowrap;
  }

  .carousel-controls .btn {
    flex: 1 1 0;
    min-width: 0;
  }

  .carousel-controls .mini-note {
    flex: 0 0 auto;
    align-self: center;
    text-align: center;
  }

  .carousel-controls-bottom {
    display: flex;
  }

  .table-shell,
  .rank-table-wrap {
    margin-inline: -18px;
    padding: 0 18px 4px;
  }

  .data-table,
  .rank-table {
    min-width: 560px;
    font-size: 0.92rem;
  }

  .rank-table th,
  .rank-table td,
  .data-table th,
  .data-table td {
    padding: 12px 10px;
    white-space: nowrap;
  }

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

  .activity-card > .muted {
    display: -webkit-box;
    overflow: hidden;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }

  .activity-card .meta-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 14px 0;
  }

  .member-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .published-activity-card {
    padding: 20px 18px;
    border-radius: 24px;
  }

  .published-activity-card::before {
    left: 18px;
    width: 84px;
  }

  .published-activity-title {
    font-size: 1.45rem;
  }

  .published-activity-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .activity-metric-card {
    padding: 14px;
    border-radius: 18px;
  }

  .task-carousel-shell {
    gap: 14px;
    overflow: hidden;
  }

  .task-flip-book {
    position: static;
    min-height: 0;
    height: auto;
    overflow: visible;
    transition: none;
  }

  .task-page {
    position: relative;
    inset: auto;
    display: none;
    width: 100%;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    transition: none;
    will-change: auto;
  }

  .task-page.is-active {
    display: block;
    z-index: auto;
  }

  .task-page.is-left {
    transform: none;
  }

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

  .task-page-content,
  .task-page-inner {
    gap: 12px;
  }

  .task-description {
    min-height: 0;
  }

  .task-media,
  .submission-preview img,
  .review-image {
    aspect-ratio: auto;
    max-height: 48vh;
  }

  .clue-toggle {
    width: 42px;
    height: 42px;
    border-radius: 16px;
  }

  .clue-modal {
    padding: 16px;
  }

  .clue-gradient-panel {
    padding: 12px;
    border-radius: 22px;
  }

  .clue-gradient-panel img {
    max-height: 70dvh;
    border-radius: 18px;
  }

  .review-card .action-grid {
    flex-direction: column;
    align-items: stretch;
  }

  .login-body {
    min-height: 100dvh;
  }

  .login-page {
    width: min(100% - 16px, 1200px);
    min-height: 100dvh;
    padding: 16px 0 24px;
    gap: 16px;
    align-content: start;
  }

  .login-panel {
    order: 1;
    gap: 14px;
  }

  .login-copy {
    order: 2;
    gap: 14px;
    min-height: auto;
    align-content: start;
  }

  .spring-copy,
  .admin-copy,
  .admin-panel {
    min-height: auto;
    align-content: start;
  }
}

@media (max-width: 560px) {
  .published-activity-metrics {
    grid-template-columns: 1fr;
  }

  .hero-side-rank {
    padding: 16px;
  }

  .task-page {
    transform: none;
  }

  .task-page.is-left {
    transform: none;
  }
}