:root {
  --bg-top: #f6efe1;
  --bg-bottom: #d9e7d9;
  --surface: rgba(255, 250, 242, 0.88);
  --surface-strong: rgba(255, 252, 247, 0.96);
  --surface-muted: rgba(240, 234, 224, 0.85);
  --ink: #17322d;
  --ink-soft: #47635c;
  --accent: #bb5d2f;
  --accent-strong: #8e441f;
  --accent-cool: #295f56;
  --line: rgba(23, 50, 45, 0.16);
  --line-strong: rgba(23, 50, 45, 0.28);
  --shadow: 0 18px 50px rgba(39, 56, 49, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font-ui: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-ui);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.8), transparent 34%),
    radial-gradient(circle at right 10%, rgba(187, 93, 47, 0.16), transparent 28%),
    linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.22) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black, transparent 78%);
}

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

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

button,
a {
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(41, 95, 86, 0.35);
  outline-offset: 2px;
}

.app-shell {
  width: min(100%, 78rem);
  margin: 0 auto;
  padding: 1.1rem;
}

.app-shell-wide {
  width: min(100%, 92rem);
}

.hero-card,
.panel {
  backdrop-filter: blur(16px);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-card {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.2rem, 2.4vw, 2rem);
  margin-bottom: 1rem;
}

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

.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-end;
  align-items: center;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.6rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.4rem);
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

p {
  line-height: 1.5;
}

.hero-copy,
.muted {
  color: var(--ink-soft);
}

.hero-copy {
  max-width: 56rem;
}

.stepper {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.stepper li {
  padding: 0.8rem 0.9rem;
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.stepper li.is-active {
  background: rgba(41, 95, 86, 0.12);
  border-color: rgba(41, 95, 86, 0.34);
  color: var(--ink);
}

.stepper li.is-complete {
  background: rgba(187, 93, 47, 0.12);
  border-color: rgba(187, 93, 47, 0.34);
}

.stack-layout {
  display: grid;
  gap: 1rem;
}

.screen {
  display: none;
}

.screen.is-active {
  display: block;
  animation: riseIn 280ms ease;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel {
  padding: clamp(1rem, 2vw, 1.6rem);
}

.panel-wide {
  padding-bottom: 1rem;
}

.panel-heading {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.9rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.compact-heading {
  align-items: center;
}

.badge,
.timer-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2.2rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  font-weight: 700;
  color: var(--ink);
}

.timer-pill {
  font-size: 1.1rem;
}

.timer-pill-alert {
  background: rgba(187, 93, 47, 0.14);
  border-color: rgba(187, 93, 47, 0.34);
}

.instruction-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 1.2rem;
}

.instruction-card,
.chart-card {
  background: var(--surface-strong);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-lg);
  padding: 1rem;
}

.stack-form {
  display: grid;
  gap: 0.95rem;
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--ink);
  font-weight: 600;
}

label span {
  font-size: 0.96rem;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.82rem 0.95rem;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--ink);
}

textarea {
  resize: vertical;
  min-height: 6rem;
}

.primary-button,
.secondary-button,
.danger-button,
.ghost-button,
.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  font-weight: 700;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff9f4;
  box-shadow: 0 10px 24px rgba(187, 93, 47, 0.22);
}

.secondary-button {
  background: rgba(41, 95, 86, 0.1);
  border-color: rgba(41, 95, 86, 0.26);
  color: var(--ink);
}

.danger-button {
  background: rgba(187, 93, 47, 0.12);
  border: 1px solid rgba(187, 93, 47, 0.28);
  color: var(--accent-strong);
}

.ghost-button,
.ghost-link {
  background: rgba(255, 255, 255, 0.6);
  border-color: var(--line);
  color: var(--ink);
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.ghost-link:hover {
  transform: translateY(-1px);
}

.stimulus-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface-strong);
}

.stimulus-figure img {
  width: 100%;
  object-fit: contain;
}

.response-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.response-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.05fr) minmax(18rem, 0.95fr);
}

.response-grid {
  display: grid;
  gap: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 2px solid var(--line-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.72);
}

.grid-cell {
  position: relative;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.7);
  padding: 0.5rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.55rem;
}

.grid-cell.is-selected {
  background: rgba(41, 95, 86, 0.12);
  box-shadow: inset 0 0 0 2px rgba(41, 95, 86, 0.28);
}

.grid-cell.is-filled {
  background: rgba(187, 93, 47, 0.12);
}

.grid-cell-number {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  font-weight: 800;
}

.grid-cell-copy {
  font-size: 0.84rem;
  line-height: 1.3;
  color: var(--ink-soft);
}

.grid-cell-indicators {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.mini-pill {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  font-size: 0.78rem;
  font-weight: 700;
}

.editor-panel {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.canvas-wrap {
  padding: 0.7rem;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(rgba(41, 95, 86, 0.05), rgba(41, 95, 86, 0.05)),
    linear-gradient(transparent 31px, rgba(23, 50, 45, 0.07) 32px),
    linear-gradient(90deg, transparent 31px, rgba(23, 50, 45, 0.07) 32px);
  background-size: auto, 32px 32px, 32px 32px;
  border: 1px solid var(--line);
}

#cell-canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
  background: #fffdf8;
  touch-action: none;
}

.notes-panel {
  margin-top: 1rem;
}

.submit-row {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.9rem;
}

.success-panel {
  text-align: center;
  padding-block: 2rem;
}

.result-id {
  margin: 0.7rem 0;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: 0.06em;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.stat-card {
  background: var(--surface-strong);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: var(--radius-lg);
  padding: 1rem;
}

.stat-card-value {
  margin-top: 0.45rem;
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--font-display);
}

.admin-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.2fr) minmax(20rem, 0.9fr);
}

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

.results-panel,
.detail-panel {
  min-height: 28rem;
}

.submission-list {
  display: grid;
  gap: 0.75rem;
}

.submission-card {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.74);
  padding: 1rem;
  text-align: left;
  display: grid;
  gap: 0.7rem;
}

.submission-card.is-selected {
  border-color: rgba(41, 95, 86, 0.42);
  background: rgba(41, 95, 86, 0.1);
  box-shadow: inset 0 0 0 1px rgba(41, 95, 86, 0.18);
}

.submission-meta,
.review-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.charts-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.chart-head {
  margin-bottom: 0.8rem;
}

.chart-svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.legend-item {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
}

.legend-swatch {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 0.3rem;
}

.detail-empty {
  min-height: 100%;
  display: grid;
  place-items: center;
  text-align: center;
}

.detail-stack {
  display: grid;
  gap: 1rem;
}

.detail-metadata {
  display: grid;
  gap: 0.75rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
}

.detail-cell {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.74);
  padding: 0.6rem;
  display: grid;
  gap: 0.45rem;
}

.detail-cell img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #fffdf8;
  border: 1px solid var(--line);
}

.detail-cell strong {
  font-size: 0.86rem;
}

.score-form {
  display: grid;
  gap: 0.85rem;
}

.score-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.notes-box {
  padding: 0.9rem 1rem;
  border-radius: var(--radius-lg);
  background: var(--surface-muted);
  border: 1px solid var(--line);
}

.form-error {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(187, 93, 47, 0.12);
  border: 1px solid rgba(187, 93, 47, 0.24);
  color: var(--accent-strong);
  font-weight: 700;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.login-panel {
  width: min(100%, 32rem);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%) translateY(120%);
  min-width: min(92vw, 26rem);
  padding: 0.85rem 1rem;
  border-radius: 999px;
  background: rgba(23, 50, 45, 0.94);
  color: #fffdf8;
  text-align: center;
  box-shadow: 0 14px 28px rgba(23, 50, 45, 0.22);
  transition: transform 200ms ease;
  z-index: 40;
}

.toast.is-visible {
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 960px) {
  .hero-card-admin,
  .response-layout,
  .admin-layout,
  .charts-grid,
  .score-grid {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 720px) {
  .app-shell,
  .app-shell-wide {
    padding: 0.75rem;
  }

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

  .panel-heading,
  .response-header,
  .submit-row {
    align-items: stretch;
  }

  .response-grid {
    border-width: 1px;
  }

  .grid-cell {
    padding: 0.42rem;
  }

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

@media (max-width: 520px) {
  html {
    font-size: 15px;
  }

  .stats-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .grid-cell-copy {
    font-size: 0.78rem;
  }

  .badge,
  .timer-pill {
    width: fit-content;
  }
}