:root {
  --bg: #f4fbf6;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --surface-ghost: rgba(18, 154, 82, 0.08);
  --line: rgba(15, 38, 23, 0.1);
  --ink: #0f2617;
  --muted: #557363;
  --primary: #129a52;
  --primary-deep: #0d6b3d;
  --primary-soft: #dff6e7;
  --accent: #f2c14c;
  --shadow: 0 20px 50px rgba(18, 102, 59, 0.14);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "IBM Plex Sans", sans-serif;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.45), rgba(244, 251, 246, 0.98)),
    url("./assets/ambient-texture.png") center top / 1200px auto no-repeat,
    var(--bg);
  color: var(--ink);
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.page-glow {
  position: fixed;
  inset: auto;
  width: 34vw;
  height: 34vw;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(40px);
  opacity: 0.32;
  z-index: 0;
}

.page-glow-left {
  top: -10vw;
  left: -10vw;
  background: rgba(18, 154, 82, 0.2);
}

.page-glow-right {
  right: -14vw;
  top: 28vh;
  background: rgba(242, 193, 76, 0.14);
}

.topbar,
main,
.modal,
.toast {
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0 18px;
}

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

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: white;
  background: linear-gradient(135deg, var(--primary), #47c57e);
  box-shadow: 0 12px 30px rgba(18, 154, 82, 0.25);
}

.brand h1,
.hero h2,
.section-heading h2,
.panel-header h3,
.result-copy h3,
.intro-copy h3,
.architecture-grid h3,
.process-card h3,
.modal-card h3 {
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  margin: 0;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary-deep);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.76rem;
  font-weight: 700;
}

.topnav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-weight: 600;
}

.topnav a:hover {
  color: var(--primary-deep);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
  gap: 28px;
  padding: 18px 0 40px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(18, 154, 82, 0.12);
  color: var(--primary-deep);
  font-weight: 700;
}

.badge-soft {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.hero h2 {
  margin-top: 18px;
  font-size: clamp(2.4rem, 6vw, 4.7rem);
  line-height: 1.02;
}

.hero-text {
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.8;
  max-width: 62ch;
  margin: 22px 0 0;
}

.hero-actions,
.quiz-actions,
.admin-login,
.admin-quick-actions,
.admin-block-header {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.button-primary {
  color: white;
  background: linear-gradient(135deg, var(--primary-deep), var(--primary));
  box-shadow: 0 16px 28px rgba(18, 154, 82, 0.22);
}

.button-secondary {
  background: var(--surface-strong);
  border: 1px solid rgba(15, 38, 23, 0.08);
  color: var(--ink);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.metric-card,
.process-card,
.card {
  backdrop-filter: blur(16px);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: var(--shadow);
}

.metric-card {
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.metric-card strong {
  display: block;
  font-size: 1.6rem;
  margin-top: 4px;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
}

.metric-card span,
.mini-note {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-visual {
  padding: 16px;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.card {
  border-radius: var(--radius-xl);
}

.hero-image {
  width: 100%;
  border-radius: 28px;
  aspect-ratio: 1.35 / 1;
  object-fit: cover;
}

.visual-overlay {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.visual-chip {
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(12, 39, 24, 0.9);
  color: white;
}

.visual-chip span {
  display: block;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.8rem;
  margin-bottom: 5px;
}

.process {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 88px;
}

.process-card {
  padding: 28px;
  border-radius: var(--radius-lg);
}

.process-card span {
  display: inline-block;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-weight: 800;
  color: var(--primary);
  font-size: 1.1rem;
  margin-bottom: 16px;
}

.process-card p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.section-heading {
  margin-bottom: 26px;
}

.section-heading.left-align {
  margin-bottom: 18px;
}

.section-heading h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.experience,
.results,
.admin,
.architecture {
  padding-bottom: 88px;
}

.experience-grid,
.results-grid {
  display: grid;
  gap: 20px;
}

.experience-grid {
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: start;
}

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

.activity-panel {
  grid-column: 1 / -1;
}

.intro-panel,
.quiz-panel,
.leaderboard-panel,
.prize-panel,
.activity-panel,
.admin-login-card,
.admin-console,
.architecture-card {
  padding: 28px;
}

.intro-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 24px;
  align-items: end;
  background:
    linear-gradient(180deg, rgba(18, 154, 82, 0.08), rgba(255, 255, 255, 0.9)),
    var(--surface);
}

.intro-copy p,
.architecture-grid p {
  color: var(--muted);
  line-height: 1.8;
}

.rule-list {
  padding-left: 18px;
  color: var(--ink);
}

.rule-list li {
  margin-bottom: 10px;
}

.machine-image {
  width: 100%;
  border-radius: 26px;
  filter: drop-shadow(0 18px 24px rgba(18, 154, 82, 0.16));
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: start;
  margin-bottom: 22px;
}

.status-pill {
  display: inline-flex;
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(15, 38, 23, 0.06);
  color: var(--muted);
  font-weight: 700;
  white-space: nowrap;
}

.status-ok {
  background: rgba(18, 154, 82, 0.14);
  color: var(--primary-deep);
}

.participant-fields,
.question-card .option-group,
.admin-grid {
  display: grid;
  gap: 16px;
}

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

label span,
.field-label {
  display: block;
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 8px;
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(15, 38, 23, 0.12);
  border-radius: 16px;
  padding: 13px 14px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
}

input:focus,
textarea:focus {
  outline: 2px solid rgba(18, 154, 82, 0.22);
  border-color: rgba(18, 154, 82, 0.45);
}

.question-list {
  display: grid;
  gap: 16px;
  margin: 24px 0;
}

.question-card {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid rgba(15, 38, 23, 0.08);
  background: rgba(255, 255, 255, 0.74);
}

.question-card h4 {
  margin: 0 0 14px;
  font-size: 1rem;
}

.option-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--surface-ghost);
}

.option-pill input {
  width: auto;
  margin: 0;
}

.result-card {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(18, 154, 82, 0.1), rgba(255, 255, 255, 0.94));
  padding: 22px;
}

.result-card p {
  margin: 12px 0 0;
  color: var(--muted);
}

.leaderboard-list,
.prize-grid,
.activity-feed,
.admin-summary,
.admin-stack {
  display: grid;
  gap: 14px;
}

.leaderboard-item,
.activity-item,
.admin-summary-card,
.prize-card,
.admin-editor {
  border: 1px solid rgba(15, 38, 23, 0.08);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.74);
}

.leaderboard-item,
.activity-item,
.admin-summary-card {
  padding: 16px;
}

.leaderboard-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
}

.rank-badge {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(18, 154, 82, 0.18), rgba(255, 255, 255, 0.9));
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  font-weight: 700;
}

.leaderboard-item strong,
.activity-item strong,
.prize-card strong,
.admin-summary-card strong {
  display: block;
  margin-bottom: 4px;
}

.leaderboard-item span,
.activity-item span,
.prize-card span,
.admin-summary-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

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

.prize-card {
  padding: 18px;
}

.prize-chip {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(242, 193, 76, 0.18);
  color: #7c5b00;
  font-weight: 700;
  margin-top: 10px;
}

.activity-item {
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

.admin-layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 20px;
}

.admin-login {
  margin: 18px 0 14px;
}

.admin-summary {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 24px;
}

.admin-summary-card {
  padding: 18px;
}

.admin-block + .admin-block {
  margin-top: 28px;
}

.admin-block-header {
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.admin-block h4 {
  margin: 0;
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
}

.admin-editor {
  padding: 16px;
}

.admin-editor-row {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) 120px;
}

.admin-editor-row.question-main {
  grid-template-columns: minmax(0, 1fr) 120px;
}

.admin-options {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.admin-option-row {
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr) 120px;
}

.hidden {
  display: none !important;
}

.architecture-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(8, 18, 12, 0.55);
  display: grid;
  place-items: center;
  padding: 24px;
}

.modal-card {
  position: relative;
  width: min(520px, 100%);
  padding: 28px;
  border-radius: 30px;
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(230, 248, 236, 0.98));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.2);
}

.modal-card img {
  width: min(220px, 60%);
  margin: 0 auto 16px;
}

.modal-card p {
  color: var(--muted);
  line-height: 1.8;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: rgba(15, 38, 23, 0.06);
  font-size: 1.4rem;
  cursor: pointer;
}

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 18px;
  border-radius: 999px;
  background: rgba(15, 38, 23, 0.92);
  color: white;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

@media (max-width: 1100px) {
  .hero,
  .experience-grid,
  .admin-layout,
  .architecture-grid {
    grid-template-columns: 1fr;
  }

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

  .activity-panel {
    grid-column: auto;
  }

  .metric-row,
  .admin-summary,
  .process,
  .prize-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro-panel {
    grid-template-columns: 1fr;
  }

  .machine-image {
    width: min(260px, 100%);
  }
}

@media (max-width: 760px) {
  .topbar {
    flex-direction: column;
    align-items: start;
    gap: 16px;
  }

  .topnav {
    gap: 14px;
    flex-wrap: wrap;
  }

  .hero h2 {
    font-size: clamp(2rem, 12vw, 3.2rem);
  }

  .metric-row,
  .participant-fields,
  .admin-summary,
  .process,
  .visual-overlay,
  .prize-grid,
  .admin-editor-row,
  .admin-editor-row.question-main,
  .admin-option-row {
    grid-template-columns: 1fr;
  }

  .result-card,
  .activity-item,
  .panel-header {
    flex-direction: column;
    align-items: start;
  }

  .experience,
  .results,
  .admin,
  .architecture {
    padding-bottom: 64px;
  }

  .leaderboard-item {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .leaderboard-item .score-pill {
    grid-column: 2;
  }
}