/* ===================================================================
   IJCNN 2026 Challenge — Light Academic Theme
   =================================================================== */

/* --- Scroll reveal ------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Reset & base -------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--gray-300) transparent;
}

/* Webkit scrollbar (Chrome, Safari, Edge) */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}

/* Dark scrollbar for code blocks */
pre::-webkit-scrollbar-thumb {
  background: var(--gray-600);
}
pre::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}
pre {
  scrollbar-color: var(--gray-600) transparent;
}

:root {
  --primary: #1a56db;
  --primary-light: #e8eefb;
  --primary-dark: #133ea0;
  --accent: #0e9f6e;
  --accent-light: #def7ec;
  --danger: #e02424;
  --danger-light: #fde8e8;
  --warning: #c27803;
  --warning-light: #fdf6b2;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --transition: 0.2s ease;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.65;
  text-align: justify;
  overflow-wrap: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
  font-size: 16px;
}

a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
}

/* --- Layout -------------------------------------------------------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.container-narrow {
  max-width: 500px;
}
.text-center {
  text-align: center;
}
.text-muted {
  color: var(--gray-500);
}
.main-content {
  flex: 1 0 auto;
}

/* --- Navbar -------------------------------------------------------- */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}
section[id] {
  scroll-margin-top: 64px;
}
.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--gray-900);
}
.nav-brand:hover {
  text-decoration: none;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--gray-700);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}
.nav-links a {
  color: var(--gray-600);
  font-size: 0.88rem;
  transition: color 0.25s;
}
.nav-links a:hover {
  color: var(--primary);
  text-decoration: none;
}
.nav-links a.active {
  color: var(--primary);
}
.nav-links .btn {
  color: var(--white);
}
.nav-links .btn-outline {
  color: var(--primary);
}
.nav-team {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
  background: var(--primary-light);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
}

/* --- Buttons ------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  font-size: 0.95rem;
  padding: 0.55rem 1.25rem;
  transition: var(--transition);
  text-decoration: none;
}
.btn:hover {
  text-decoration: none;
}
.btn-sm {
  font-size: 0.85rem;
  padding: 0.35rem 0.85rem;
}
.btn-lg {
  font-size: 1.05rem;
  padding: 0.7rem 1.75rem;
}
.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
}
.btn-outline {
  background: transparent;
  color: var(--gray-600);
  border: 1px solid var(--gray-300);
}
.btn-outline:hover {
  background: var(--gray-100);
}
.btn-accent {
  background: var(--accent);
  color: var(--white);
}
.btn-accent:hover {
  background: #0c8a5e;
}

/* --- Flash messages ------------------------------------------------ */
.flash-container {
  max-width: 1100px;
  margin: 1rem auto;
  padding: 0 1.5rem;
}
.flash {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}
.flash-success {
  background: var(--accent-light);
  color: #046c4e;
}
.flash-danger {
  background: var(--danger-light);
  color: var(--danger);
}
.flash-warning {
  background: var(--warning-light);
  color: var(--warning);
}
.flash-info {
  background: var(--primary-light);
  color: var(--primary);
}

/* --- Hero ---------------------------------------------------------- */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 40%, #0f2440 100%);
  padding: 5rem 0 4rem;
  text-align: center;
  border-bottom: 1px solid rgba(59, 130, 246, 0.2);
  position: relative;
  overflow: hidden;
}

/* Network canvas */
#hero-network {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Soft glow overlay at bottom */
.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, #0f172a, transparent);
  z-index: 1;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 2;
}

/* Hero logos */
.hero-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
}
.hero-logo {
  height: 80px;
  width: auto;
  object-fit: contain;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.9);
  padding: 6px;
}
.hero-logo-sm {
  height: 75px;
}
.hero-logo-ura {
  height: 75px;
  width: 75px;
  padding: 6px;
  object-fit: contain;
}

.hero h1 {
  font-size: 2.8rem;
  color: #ffffff;
  margin-bottom: 0.1rem;
  letter-spacing: 0.04em;
}
.hero-overline {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #60a5fa;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.hero-sub {
  font-size: 1.1rem;
  color: rgba(148, 163, 184, 0.9);
  margin-bottom: 1.5rem;
}
.hero-sub a {
  color: #60a5fa;
}
.hero-sub a:hover {
  color: #93bbfd;
}
.hero-publish {
  font-size: 0.95rem;
  color: rgba(148, 163, 184, 0.85);
  margin-bottom: 1.25rem;
}
.hero-publish a {
  color: #60a5fa;
}
.hero-publish a:hover {
  color: #93bbfd;
}
.hero-challenge-name {
  font-size: 1.35rem;
  color: rgba(203, 213, 225, 0.95);
  margin-bottom: 0.5rem;
  font-weight: 500;
}
.hero-status {
  margin-bottom: 1.5rem;
  display: inline-block;
}
.hero-cta {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}
.hero .btn {
  margin-top: 0.5rem;
}
.hero-coi {
  font-size: 0.8rem;
  color: rgba(148, 163, 184, 0.6);
  margin-top: 1.25rem;
}
.coi-note {
  font-size: 0.85rem;
  color: #f87171;
  margin-top: 0.75rem;
}
.hero .btn-outline {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: none;
}
.hero .btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* --- Badges -------------------------------------------------------- */
.badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}
.badge-upcoming {
  background: var(--warning-light);
  color: var(--warning);
}
.badge-active {
  background: var(--accent-light);
  color: #046c4e;
}
.badge-ended {
  background: var(--gray-200);
  color: var(--gray-500);
}

/* --- Sections ------------------------------------------------------ */
.section {
  padding: 2.5rem 0;
}
.section-alt {
  background: var(--white);
}
.section h2 {
  font-size: 1.75rem;
  color: var(--gray-900);
  margin-bottom: 1.25rem;
  padding-bottom: 0.2rem;
  border-bottom: 3px solid var(--primary);
  text-align: left;
  display: inline-block;
}
.section h3 {
  font-size: 1.3rem;
  color: var(--gray-800);
  margin: 2rem 0 0.75rem;
  text-align: left;
}
.section h4 {
  font-size: 1rem;
  color: var(--gray-700);
  margin: 1.25rem 0 0.5rem;
  text-align: left;
}
.section p {
  margin-bottom: 0.75rem;
}
.section ul {
  margin: 0 0 1rem 1.5rem;
  list-style-type: square;
}
.section li {
  margin-bottom: 0.35rem;
  padding-left: 0.25rem;
}

/* --- Cards --------------------------------------------------------- */
.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1rem;
}
.card h3 {
  margin-top: 0;
}
.card h4 {
  margin-top: 0.5rem;
}
.card-compact h4 {
  margin-top: 0;
  margin-bottom: 0.25rem;
  font-size: 1rem;
}
.card-compact p {
  margin-bottom: 0;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}
.card-grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Rules */
.rules-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 1.25rem;
}
.card-do {
  border-left: 4px solid var(--accent);
}
.card-dont {
  border-left: 4px solid var(--danger);
}

/* --- Tables -------------------------------------------------------- */
.table-wrapper {
  overflow-x: auto;
  margin: 1rem 0;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
}
th,
td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
  -webkit-hyphens: auto;
}
th {
  background: var(--gray-100);
  font-weight: 600;
  color: var(--gray-700);
}
.table-timeline {
  table-layout: fixed;
  width: 100%;
}
.table-timeline th:first-child,
.table-timeline td:first-child {
  width: 3rem;
}
.table-timeline th:last-child,
.table-timeline td:last-child {
  width: 30rem;
  white-space: nowrap;
  line-height: 1.45;
}
.table-timeline details summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--gray-800);
}
.table-timeline details summary::-webkit-details-marker {
  display: none;
}
.table-timeline details summary::before {
  content: "▸";
  font-size: 0.75rem;
  color: var(--primary);
  transition: transform 0.2s ease;
  display: inline-block;
}
.table-timeline details[open] summary::before {
  transform: rotate(90deg);
}
.table-timeline details .timeline-desc {
  margin: 0.4rem 0 0 1.1rem;
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.55;
}
.timeline-highlight {
  background: rgba(37, 99, 235, 0.06);
}
.timeline-highlight td {
  color: var(--primary);
  font-weight: 600;
}
.date-old {
  color: rgba(148, 163, 184, 0.65);
  text-decoration: line-through;
  text-decoration-thickness: 1.5px;
  font-weight: 400;
}
.date-revised {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  min-width: 0;
  white-space: nowrap;
}
.date-revised .date-old {
  display: inline-block;
}
.table-eval td:first-child,
.table-eval th:first-child {
  white-space: nowrap;
}
tbody tr:hover {
  background: transparent;
}

/* --- Code blocks --------------------------------------------------- */
pre {
  background: var(--gray-900);
  color: #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 0.75rem 1rem;
  overflow-x: auto;
  white-space: pre;
  margin: 1rem 0;
  font-size: 0.85rem;
  line-height: 1.6;
  word-break: break-all;
}
pre code {
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
}

/* --- Auth / login -------------------------------------------------- */
.auth-form {
  margin-top: 0;
}
.auth-card,
.register-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1rem 1.15rem;
  text-align: left;
}
.auth-switch {
  margin: 1rem 0 0;
  font-size: 0.95rem;
}
.page-header {
  margin-bottom: 1.5rem;
  text-align: left;
}
.page-header h2 {
  margin-bottom: 0.65rem;
}
.page-header p {
  max-width: 760px;
  line-height: 1.6;
  margin-bottom: 0;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 1rem;
}
.form-grid-span {
  grid-column: 1 / -1;
}
.form-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.form-help {
  margin-top: 0.35rem;
  color: var(--gray-500);
  font-size: 0.85rem;
  line-height: 1.45;
}
.form-group {
  margin-bottom: 0.9rem;
}
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--gray-700);
  font-size: 0.95rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.95rem;
  background: var(--white);
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
}

/* --- Challenge page ------------------------------------------------ */
.status-banner {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}
.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-active {
  background: var(--accent-light);
  color: #046c4e;
}
.status-active .status-dot {
  background: var(--accent);
}
.status-upcoming {
  background: var(--warning-light);
  color: var(--warning);
}
.status-upcoming .status-dot {
  background: var(--warning);
}
.status-ended {
  background: var(--gray-100);
  color: var(--gray-500);
}
.status-ended .status-dot {
  background: var(--gray-400);
}

.challenge-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--gray-200);
}
.challenge-tab {
  padding: 0.6rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--gray-500);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
}
.challenge-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.challenge-tab:hover {
  color: var(--primary);
}

.challenge-header {
  margin-bottom: 1.5rem;
}
.challenge-actions {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

/* Submit panel */
.submit-panel {
  margin-top: 1rem;
  border: 2px dashed var(--gray-300);
  background: var(--gray-50);
}
.submit-result {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
}
.submit-success {
  background: var(--accent-light);
  color: #046c4e;
}
.submit-error {
  background: var(--danger-light);
  color: var(--danger);
}
.quick-result {
  margin-top: 0.35rem;
}
.quick-badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background: var(--gray-50);
  color: var(--gray-700);
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}
.quick-pass {
  border-color: #9fdcc5;
  background: var(--accent-light);
  color: #046c4e;
}
.quick-warn {
  border-color: #f4b4b4;
  background: var(--danger-light);
  color: var(--danger);
}
.quick-fail {
  border-color: #f4b4b4;
  background: var(--danger-light);
  color: var(--danger);
}
.quick-skip {
  border-color: var(--gray-300);
  background: var(--gray-100);
  color: var(--gray-600);
}
.check-log {
  margin-top: 1rem;
  padding: 0.85rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
}
.admin-quick-log-target {
  margin-top: 0.75rem;
}
.admin-quick-log-target:empty {
  margin-top: 0;
}
.check-log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.check-log-title {
  font-weight: 800;
  color: var(--dark);
}
.check-log ul {
  list-style: none;
  margin: 0.65rem 0 0;
  padding: 0;
}
.check-log li {
  margin: 0;
  padding: 0.55rem 0;
  border-top: 1px solid var(--gray-200);
  line-height: 1.45;
}
.check-log li:first-child {
  border-top: 0;
  padding-top: 0;
}
.log-main {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.log-status {
  display: inline-flex;
  align-items: center;
  min-height: 1.35rem;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 800;
}
.log-status-ok {
  background: var(--accent-light);
  color: #046c4e;
}
.log-status-fail {
  background: var(--danger-light);
  color: var(--danger);
}
.log-status-warn {
  background: #fff7ed;
  color: #9a3412;
}
.log-query {
  font-weight: 700;
  color: var(--dark);
}
.log-meta,
.log-error {
  color: var(--gray-600);
}
.log-error {
  margin-top: 0.25rem;
  overflow-wrap: anywhere;
}
.log-detail summary {
  cursor: pointer;
  list-style: none;
}
.log-detail summary::-webkit-details-marker {
  display: none;
}
.log-detail summary::after {
  content: "View details";
  display: inline-flex;
  margin-top: 0.45rem;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
}
.log-detail[open] summary::after {
  content: "Hide details";
}
.log-terminal {
  margin: 0.65rem 0 0;
  padding: 0.85rem;
  border: 1px solid #111827;
  border-radius: var(--radius);
  background: #0b1020;
  color: #e5e7eb;
  font-size: 0.82rem;
  line-height: 1.55;
  overflow-x: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.log-terminal code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color: inherit;
}
.log-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 0.65rem;
}
.log-field {
  min-width: 0;
  padding: 0.65rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: #fff;
}
.log-field-label {
  color: var(--gray-500);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}
.log-field-value {
  margin-top: 0.3rem;
  color: var(--dark);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.log-error-field {
  border-color: var(--danger-light);
  background: #fff7f7;
}
.log-list {
  margin: 0.35rem 0 0;
  padding: 0;
  list-style: none;
}
.check-log .log-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.45rem;
  padding: 0.25rem 0;
  border-top: 0;
  overflow-wrap: anywhere;
}
.log-list-index {
  color: var(--gray-500);
  font-weight: 700;
}

.submission-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
}
.submission-form {
  margin: 0;
}
.submission-form h3,
.submission-summary h3 {
  font-size: 1.15rem;
  margin: 0 0 0.75rem;
  padding-bottom: 0.2rem;
  border-bottom: 1px solid var(--gray-200);
}
.submission-form h3:not(:first-child) {
  margin-top: 1.15rem;
}
.required-mark {
  color: var(--danger);
  font-weight: 800;
}
.submission-choice-note {
  margin: 0.65rem 0 0.5rem;
  color: var(--gray-700);
  font-size: 0.95rem;
}
.individual-files {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 1rem;
}
.submission-summary dl {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 0.45rem 0.75rem;
  font-size: 0.95rem;
}
.submission-summary dt {
  color: var(--gray-500);
  font-weight: 600;
}
.submission-summary dd {
  min-width: 0;
  overflow-wrap: anywhere;
}
.eval-round1-team-card {
  margin-top: 1.25rem;
}
.eval-round1-team-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.eval-round1-team-head h3 {
  margin: 0 0 0.25rem;
}
.eval-round1-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}
.eval-round1-total-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  background: #fff;
}
.eval-round1-total-line span {
  color: var(--gray-500);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
}
.eval-round1-total-line strong {
  color: var(--dark);
  font-size: 1.45rem;
  font-weight: 900;
}
.eval-round1-download-row {
  display: flex;
  justify-content: flex-end;
  margin: -0.25rem 0 0.85rem;
}
.eval-round1-summary-grid > div {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
}
.eval-round1-summary-grid span {
  display: block;
  color: var(--gray-500);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}
.eval-round1-summary-grid strong {
  display: block;
  margin-top: 0.2rem;
  color: var(--dark);
  font-size: 1rem;
  overflow-wrap: anywhere;
}
.eval-round1-log {
  max-height: 44rem;
  overflow: auto;
}
.eval-round1-footnote {
  margin-top: 0.75rem;
  color: var(--gray-600);
  font-size: 0.9rem;
}
.quick-action-panel {
  margin: 0.85rem 0;
  padding: 0.75rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
}
.quick-action-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}
.quick-action-head .btn {
  flex: 0 0 auto;
}
.slot-note {
  margin-bottom: 0.75rem;
}
.slot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 0.65rem;
  margin-bottom: 1rem;
}
.slot-card {
  min-height: 96px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  border: 1px solid var(--gray-300);
  border-left: 4px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 0.7rem 0.75rem;
  background: var(--white);
  color: var(--gray-800);
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}
.slot-card:hover:not(:disabled),
.slot-card.selected {
  border-color: var(--primary);
  border-left-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
}
.slot-card:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}
.slot-date {
  color: var(--gray-500);
  font-size: 0.78rem;
  font-weight: 700;
}
.slot-time {
  font-size: 1rem;
  font-weight: 700;
}
.slot-capacity {
  font-size: 0.83rem;
  color: var(--gray-600);
}
.slot-low {
  border-left-color: var(--accent);
  background: var(--white);
}
.slot-mid {
  border-left-color: var(--warning);
  background: #fffdf3;
}
.slot-high {
  border-left-color: var(--danger);
  background: #fffafa;
}
.slot-full {
  background: var(--gray-100);
  border-color: var(--gray-300);
}
.leaderboard-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  margin-top: 0.5rem;
}
.leaderboard-table td:first-child,
.leaderboard-table th:first-child {
  width: 80px;
  text-align: center;
}
.leaderboard-table th,
.leaderboard-table td {
  text-align: left;
}

.similarity-bar-wrap {
  background: var(--gray-200);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 0.75rem;
  height: 26px;
}
.similarity-bar {
  height: 100%;
  background: var(--accent);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 999px;
  min-width: 40px;
  transition: width 0.6s ease;
}

/* --- Footer -------------------------------------------------------- */
.footer {
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  padding: 2rem 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--gray-500);
}
.footer-sub {
  font-size: 0.8rem;
  margin-top: 0.25rem;
  color: var(--gray-400);
}

/* --- Responsive ---------------------------------------------------- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.75rem;
  }
  .rules-grid {
    grid-template-columns: 1fr;
  }
  .nav-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    gap: 0.75rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }
  .nav-links.open {
    display: flex;
  }
  /* Hero CTA buttons stack vertically on mobile */
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  .challenge-actions {
    flex-direction: column;
  }
  .form-grid,
  .log-detail-grid,
  .submission-layout,
  .eval-round1-summary-grid,
  .individual-files,
  .slot-grid {
    grid-template-columns: 1fr;
  }
  .auth-card,
  .register-form {
    padding: 1rem;
  }

  /* --- Responsive tables → stacked cards --- */
  .table-responsive,
  .table-responsive thead,
  .table-responsive tbody,
  .table-responsive tr,
  .table-responsive th,
  .table-responsive td {
    display: block;
  }
  .table-responsive thead {
    display: none;
  }
  .table-responsive tr {
    margin-bottom: 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 0;
    background: var(--white);
  }
  .table-responsive td {
    padding: 0.35rem 0.75rem;
    border-bottom: none;
    text-align: left;
  }
  .table-responsive td::before {
    content: attr(data-label);
    display: block;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.25rem;
  }
  /* Hide the # label for timeline (redundant on mobile) */
  .table-timeline td[data-label="#"] {
    display: none;
  }
  .table-timeline th:last-child,
  .table-timeline td:last-child {
    width: auto;
    white-space: normal;
  }
  .table-timeline tr {
    padding: 0;
  }
  .table-timeline tr.timeline-highlight {
    background: rgba(37, 99, 235, 0.08);
    border: 2px solid var(--primary);
  }
  .table-timeline td[data-label="Date"] {
    font-size: 0.9rem;
    color: var(--gray-600);
  }
  .date-revised {
    flex-wrap: wrap;
    gap: 0.2rem 0.45rem;
    white-space: normal;
  }
  .table-eval td:first-child {
    white-space: normal;
  }
  pre {
    font-size: 0.8rem;
  }
}

/* --- Admin panel --------------------------------------------------- */
.admin-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.admin-toolbar h3 {
  margin: 0;
  font-size: 1.2rem;
}
.export-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.export-controls .admin-input {
  min-width: 220px;
}

.admin-slot-board {
  margin: 0 0 1.25rem;
  padding: 1rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
}
.admin-slot-board-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.85rem;
}
.admin-slot-board-head h4 {
  margin: 0 0 0.25rem;
  color: var(--dark);
}
.admin-slot-board-head p {
  margin: 0;
}
.admin-slot-legend {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  color: var(--gray-600);
  font-size: 0.82rem;
  font-weight: 700;
}
.admin-slot-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}
.admin-slot-legend i {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 3px;
  border: 1px solid var(--gray-200);
}
.legend-empty { background: var(--gray-50); }
.legend-low { background: #e8f1ff; }
.legend-mid { background: #bcd4ff; }
.legend-high { background: #6ea0f5; }
.legend-full { background: #1a56db; }
.admin-slot-table-wrap {
  overflow-x: auto;
}
.admin-slot-table {
  width: 100%;
  min-width: 760px;
  table-layout: fixed;
  border-collapse: separate;
  border-spacing: 0.5rem;
}
.admin-slot-time-col {
  width: 12rem;
}
.admin-slot-date-col {
  width: calc((100% - 12rem) / 2);
}
.admin-slot-table th {
  text-align: left;
  color: var(--gray-600);
  font-size: 0.86rem;
  font-weight: 800;
  white-space: nowrap;
}
.admin-slot-table thead th {
  text-align: center;
}
.admin-slot-table td {
  vertical-align: top;
}
.admin-slot-cell {
  width: 100%;
  min-height: 8.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  text-align: left;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 0.7rem;
  background: var(--gray-50);
  color: var(--gray-800);
  cursor: pointer;
  transition: var(--transition);
}
.admin-slot-cell:hover,
.admin-slot-cell.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
}
.admin-slot-empty {
  background: var(--gray-50);
}
.admin-slot-low {
  background: #e8f1ff;
}
.admin-slot-mid {
  background: #bcd4ff;
}
.admin-slot-high {
  background: #6ea0f5;
  color: var(--white);
}
.admin-slot-full {
  background: #1a56db;
  color: var(--white);
}
.admin-slot-count {
  align-self: flex-start;
  display: inline-flex;
  padding: 0.12rem 0.45rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.76);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 900;
}
.admin-slot-high .admin-slot-count,
.admin-slot-full .admin-slot-count {
  color: var(--primary);
}
.admin-slot-teams {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.slot-team-chip {
  display: inline-grid;
  gap: 0.05rem;
  max-width: 100%;
  padding: 0.32rem 0.42rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  color: var(--gray-900);
  border: 1px solid rgba(17, 24, 39, 0.08);
}
.slot-team-chip strong {
  max-width: 12rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.8rem;
}
.slot-team-chip small {
  color: var(--gray-500);
  font-size: 0.68rem;
  font-weight: 700;
}
.slot-team-empty {
  color: var(--gray-500);
  font-size: 0.85rem;
  font-weight: 700;
}

.admin-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem 1rem;
  margin-bottom: 0.75rem;
}

.admin-input {
  width: 100%;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  background: var(--white);
  transition: var(--transition);
}
.admin-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
}
.admin-textarea {
  min-height: 4.5rem;
  resize: vertical;
}
.admin-input-sm {
  max-width: 100px;
}

.admin-actions {
  white-space: nowrap;
}
.admin-actions .btn {
  margin-right: 0.25rem;
}

.tab-panel > h3 {
  margin-top: 0;
}

#users-table-wrap,
#admin-subs-wrap,
#config-table-wrap {
  background: var(--white);
  border-color: var(--gray-200);
}

.admin-config-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
  max-width: 64rem;
}

.admin-config-card,
.admin-config-values-card {
  min-width: 0;
}

.admin-config-values-card .admin-info-list {
  gap: 0.7rem;
}

.admin-config-values-card .admin-info-row {
  grid-template-columns: minmax(9rem, 13rem) minmax(0, 1fr);
}

.admin-config-value {
  max-height: 16rem;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--gray-700);
}

.admin-card-list,
.leaderboard-list,
.admin-info-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin-top: 1rem;
}

.eval-console {
  margin-bottom: 1rem;
}
.eval-console-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.eval-console-head h3 {
  margin: 0 0 0.25rem;
}
.eval-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.eval-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}
.eval-meta-grid div {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: var(--gray-50);
}
.eval-meta-grid span {
  display: block;
  color: var(--gray-500);
  font-weight: 700;
  font-size: 0.82rem;
  margin-bottom: 0.2rem;
}
.eval-meta-grid strong {
  overflow-wrap: anywhere;
}
.eval-team-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}
.eval-slot-board {
  margin-top: 1rem;
}
.eval-slot-table .admin-slot-cell {
  min-height: 12rem;
}
.eval-slot-cell {
  cursor: default;
}
.eval-slot-cell-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.eval-slot-teams {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}
.eval-slot-team-card {
  display: grid;
  gap: 0.55rem;
  padding: 0.7rem;
  border: 1px solid rgba(17, 24, 39, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
  color: var(--gray-900);
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04);
}
.eval-team-topline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.55rem;
}
.eval-team-topline h4 {
  margin: 0 0 0.1rem;
  font-size: 0.92rem;
}
.eval-team-topline p {
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.35;
}
.eval-team-actions {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.eval-team-actions .btn {
  padding: 0.32rem 0.48rem;
}
.eval-score-strip {
  margin-top: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.eval-mini-log {
  display: grid;
  gap: 0.25rem;
  padding-top: 0.1rem;
  font-size: 0.72rem;
  font-weight: 700;
}
.eval-mini-log span {
  overflow-wrap: anywhere;
}
.eval-log-ok {
  color: #166534;
}
.eval-log-bad {
  color: #b91c1c;
}
.eval-log-panel {
  display: grid;
  gap: 0.45rem;
  max-height: 26rem;
  overflow: auto;
  padding: 0.55rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
}
.eval-log-item {
  border-bottom: 1px solid var(--gray-200);
  padding-bottom: 0.4rem;
}
.eval-log-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.eval-log-item summary {
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--gray-800);
}
.eval-unscheduled {
  margin-top: 1rem;
}
.eval-unscheduled h4 {
  margin: 0 0 0.6rem;
}
.eval-unscheduled-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.75rem;
}
.eval-team-card .leaderboard-info-list {
  margin-top: 0.7rem;
}
.eval-progress-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.75rem;
  align-items: center;
}
.eval-progress-row .proof-progress {
  margin: 0;
}
.eval-errors {
  margin-top: 0.75rem;
}

.eval-r3-container {
  max-width: 1280px;
}

.eval-r3-console {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.eval-r3-console h3 {
  margin: 0 0 0.25rem;
}

.eval-r3-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.eval-r3-reveal {
  background: var(--gray-100);
  color: var(--gray-700);
  border-color: var(--gray-300);
}

.eval-r3-reveal-ready {
  background: var(--accent-light);
  color: #166534;
  border-color: #86efac;
}

.eval-r3-status {
  margin: 0.75rem 0;
  font-weight: 700;
}

body.eval-r3-display-body .navbar,
body.eval-r3-display-body .footer {
  display: none;
}

body.eval-r3-display-body .main-content {
  padding-top: 0;
}

.eval-r3-display-section {
  min-height: 100vh;
  padding: 1.5rem 0;
  background: var(--gray-50);
}

.eval-r3-display-container {
  max-width: 1580px;
}

.eval-r3-display-container .page-header {
  margin-bottom: 1rem;
}

.eval-r3-display-container .page-header h2 {
  font-size: clamp(2rem, 4vw, 4.25rem);
}

.eval-r3-display-container .eval-r3-console {
  display: none;
}

.eval-r3-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.35fr);
  gap: 1rem;
  align-items: start;
}

.eval-r3-display-container .eval-r3-layout {
  grid-template-columns: minmax(380px, 0.62fr) minmax(0, 1.38fr);
  gap: 1rem;
}

.eval-r3-display-container .eval-r3-layout[data-stage="question"] {
  grid-template-columns: minmax(0, 1fr);
}

.eval-r3-display-container .eval-r3-layout[data-stage="question"] .eval-r3-team-column {
  display: none;
}

.eval-r3-query-card {
  position: sticky;
  top: 76px;
  display: grid;
  gap: 1rem;
}

.eval-r3-display-container .eval-r3-query-card {
  position: static;
  min-height: 72vh;
  align-content: start;
  border-width: 2px;
}

.eval-r3-display-container .eval-r3-layout[data-stage="question"] .eval-r3-query-card {
  min-height: 78vh;
  justify-content: stretch;
}

.eval-r3-query-head,
.eval-r3-team-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
}

.eval-r3-query-meta,
.eval-r3-query-arrows {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.eval-r3-query-arrows {
  margin-left: auto;
}

.eval-r3-arrow-button {
  width: 2.35rem;
  height: 2.35rem;
  padding: 0;
  font-size: 1.1rem;
  line-height: 1;
}

.eval-r3-arrow-button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.eval-r3-question {
  display: grid;
  gap: 0.65rem;
  font-size: 1.02rem;
  line-height: 1.7;
  text-align: left;
}

.eval-r3-display-container .eval-r3-question {
  font-size: clamp(1.35rem, 2.2vw, 2.6rem);
  line-height: 1.45;
}

.eval-r3-display-container .eval-r3-layout[data-stage="answers"] .eval-r3-question {
  font-size: clamp(1.05rem, 1.4vw, 1.55rem);
  line-height: 1.45;
}

.eval-r3-question p,
.eval-r3-explanation p,
.eval-r3-premise p {
  margin: 0;
}

.eval-r3-options {
  display: grid;
  gap: 0.5rem;
}

.eval-r3-options div {
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
  font-weight: 700;
}

.eval-r3-display-container .eval-r3-options div {
  font-size: clamp(1rem, 1.45vw, 1.6rem);
}

.eval-r3-stage-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
}

.eval-r3-stage-meta strong {
  color: var(--primary);
  font-size: clamp(1.4rem, 3vw, 3.5rem);
  line-height: 1;
}

.eval-r3-premises {
  display: grid;
  gap: 0.55rem;
}

.eval-r3-premises h4,
.eval-r3-key h4 {
  margin: 0;
}

.eval-r3-premise {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.65rem;
  padding: 0.7rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  text-align: left;
}

.eval-r3-premise span {
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 800;
}

.eval-r3-key {
  display: grid;
  gap: 0.4rem;
  padding: 0.8rem;
  border: 1px solid #86efac;
  border-radius: var(--radius);
  background: var(--accent-light);
  text-align: left;
}

.eval-r3-team-column {
  display: grid;
  gap: 0.85rem;
}

.eval-r3-display-container .eval-r3-team-column {
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.eval-r3-team-card {
  display: grid;
  gap: 0.8rem;
  border-width: 2px;
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.eval-r3-team-card h3 {
  margin: 0 0 0.15rem;
}

.eval-r3-display-container .eval-r3-team-card h3 {
  font-size: clamp(1.05rem, 1.4vw, 1.55rem);
}

.eval-r3-team-card p {
  text-align: left;
}

.eval-r3-team-correct {
  border-color: #22c55e;
  background: #f0fdf4;
}

.eval-r3-team-wrong {
  border-color: #ef4444;
  background: #fff7f7;
}

.eval-r3-empty-response {
  padding: 1rem;
  border: 1px dashed var(--gray-300);
  border-radius: var(--radius);
  color: var(--gray-500);
  font-weight: 700;
}

.eval-r3-response-grid,
.eval-r3-score-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.eval-r3-response-grid > div,
.eval-r3-score-grid > div {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: var(--white);
  min-width: 0;
}

.eval-r3-response-grid span,
.eval-r3-score-grid span,
.eval-r3-explanation span,
.eval-r3-selected-premises span {
  display: block;
  color: var(--gray-500);
  font-size: 0.8rem;
  font-weight: 800;
  margin-bottom: 0.2rem;
}

.eval-r3-response-grid strong,
.eval-r3-score-grid strong {
  overflow-wrap: anywhere;
}

.eval-r3-response-grid .quick-badge {
  display: inline-flex;
  margin-top: 0.45rem;
  margin-bottom: 0;
}

.eval-r3-total-badge {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.9rem;
}

.eval-r3-display-container .eval-r3-total-badge {
  font-size: clamp(0.9rem, 1.15vw, 1.25rem);
  min-height: 2.2rem;
}

.eval-r3-explanation {
  padding: 0.8rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
  text-align: left;
}

.eval-r3-explanation pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: inherit;
  line-height: 1.55;
}

.eval-r3-display-container .eval-r3-explanation {
  max-height: 18rem;
  overflow: auto;
}

.eval-r3-query-nav {
  display: grid;
  grid-template-columns: repeat(11, minmax(0, 1fr));
  gap: 0.45rem;
  margin: 0.85rem 0 1rem;
}

.eval-r3-query-step {
  display: grid;
  gap: 0.2rem;
  min-width: 0;
  padding: 0.65rem 0.55rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--gray-700);
  text-align: left;
  cursor: pointer;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease,
    background 0.2s ease;
}

.eval-r3-query-step:hover,
.eval-r3-query-step.is-selected {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.eval-r3-query-step.is-admin-active {
  background: var(--primary-light);
}

.eval-r3-query-step strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: var(--radius);
  background: var(--gray-100);
  color: var(--gray-800);
  font-size: 0.95rem;
}

.eval-r3-query-step.is-admin-active strong {
  background: var(--primary);
  color: var(--white);
}

.eval-r3-query-step.is-selected {
  outline: 3px solid rgba(37, 99, 235, 0.16);
  outline-offset: 2px;
}

.eval-r3-query-step span,
.eval-r3-query-step small {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.eval-r3-query-step span {
  font-weight: 800;
}

.eval-r3-query-step small {
  color: var(--gray-500);
  font-size: 0.72rem;
  font-weight: 700;
}

.eval-r3-query-step em {
  display: inline-flex;
  width: fit-content;
  border-radius: var(--radius);
  padding: 0.12rem 0.35rem;
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 0.68rem;
  font-style: normal;
  font-weight: 900;
  text-transform: uppercase;
}

.eval-r3-query-step.is-admin-active em {
  background: var(--primary);
  color: var(--white);
}

.eval-r3-query-step.is-done {
  border-color: #86efac;
  background: #f0fdf4;
}

.eval-r3-query-step.is-admin-active.is-done,
.eval-r3-query-step.is-admin-active.is-scoring,
.eval-r3-query-step.is-admin-active.is-evaluated,
.eval-r3-query-step.is-admin-active.is-pending {
  border-color: var(--primary);
  background: var(--primary-light);
}

.eval-r3-query-step.is-scoring,
.eval-r3-query-step.is-evaluated {
  border-color: #bfdbfe;
  background: #eff6ff;
}

.eval-r3-rubrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
  margin-bottom: 1rem;
}

.eval-r3-rubric-card {
  display: grid;
  gap: 0.75rem;
}

.eval-r3-rubric-card h3,
.eval-r3-presentation-card h3 {
  margin: 0;
}

.eval-r3-rubric-list {
  display: grid;
  gap: 0.45rem;
}

.eval-r3-rubric-list div {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
  padding: 0.55rem 0;
  border-top: 1px solid var(--gray-100);
  text-align: left;
}

.eval-r3-rubric-list strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius);
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 900;
}

.eval-r3-presentation-card {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.eval-r3-section-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.eval-r3-presentation-list {
  display: grid;
  gap: 0.75rem;
}

.eval-r3-presentation-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.55fr);
  gap: 1rem;
  align-items: start;
  padding: 0.85rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
  text-align: left;
}

.eval-r3-presentation-row h4 {
  margin: 0 0 0.25rem;
}

.eval-r3-presentation-control {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
  justify-items: start;
}

.eval-r3-presentation-control label {
  color: var(--gray-600);
  font-weight: 800;
}

.eval-r3-selected-premises {
  display: grid;
  gap: 0.35rem;
}

.eval-r3-selected-premises div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.eval-r3-selected-premises b {
  width: 2.15rem;
  height: 2.15rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  border: 1px solid var(--gray-300);
  background: var(--white);
}

.premise-good {
  color: #166534;
  border-color: #86efac !important;
  background: #dcfce7 !important;
}

.premise-bad {
  color: #991b1b;
  border-color: #fecaca !important;
  background: #fee2e2 !important;
}

.premise-missed {
  color: #854d0e;
  border-color: #fde68a !important;
  background: #fef3c7 !important;
}

.eval-r3-p3 {
  display: grid;
  grid-template-columns: auto auto 5rem auto auto;
  gap: 0.6rem;
  align-items: center;
  justify-content: start;
}

.eval-r3-p3 label {
  font-size: 1rem;
  font-weight: 800;
}

.eval-r3-p3-input {
  min-height: 2.75rem;
  font-size: 1.15rem;
  font-weight: 800;
  text-align: center;
}

.eval-r3-p3-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.eval-r3-p3-picker .btn {
  min-width: 2.4rem;
  padding-inline: 0.7rem;
}

.eval-r3-p3-picker .btn.is-selected {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--white);
}

.eval-r3-save-state {
  min-width: 5rem;
  color: var(--gray-500);
  font-size: 0.9rem;
  font-weight: 800;
}

.eval-r3-save-state.is-saving {
  color: var(--primary);
}

.eval-r3-save-state.is-saved {
  color: var(--accent);
}

.eval-r3-save-state.is-error {
  color: var(--danger);
}

.eval-r3-judge-scores {
  display: grid;
  gap: 0.45rem;
}

.eval-r3-judge-scores span {
  color: var(--gray-500);
  font-size: 0.86rem;
  font-weight: 800;
  text-transform: uppercase;
}

.eval-r3-judge-scores > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.eval-r3-judge-scores b {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--gray-50);
  padding: 0.35rem 0.55rem;
}

.eval-r3-p3-average small {
  align-self: center;
  color: var(--gray-500);
  font-weight: 800;
}

.eval-r3-score-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-4px);
  transition:
    max-height 0.35s ease,
    opacity 0.25s ease,
    transform 0.25s ease;
}

.eval-r3-score-grid.is-visible {
  max-height: 10rem;
  opacity: 1;
  transform: translateY(0);
}

.admin-record-card,
.leaderboard-row-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1rem;
}

.admin-record-header,
.leaderboard-row-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.admin-record-header {
  border-bottom: 1px solid var(--gray-200);
  padding-bottom: 0.75rem;
  margin-bottom: 0.75rem;
}

.admin-record-header h4,
.leaderboard-row-card h4 {
  margin: 0;
}

.admin-field-list,
.leaderboard-info-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
}

.admin-field-row,
.admin-info-row,
.leaderboard-info-list > div {
  display: grid;
  grid-template-columns: minmax(130px, 0.28fr) 1fr;
  gap: 0.75rem;
  align-items: start;
  border-bottom: 1px solid var(--gray-100);
  padding-bottom: 0.55rem;
}

.admin-field-row label,
.admin-info-row label,
.leaderboard-info-list span {
  color: var(--gray-500);
  font-weight: 600;
  font-size: 0.86rem;
}

.admin-info-row div,
.leaderboard-info-list strong {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 600;
  color: var(--gray-800);
}

.leaderboard-info-list strong.leaderboard-penalty-value {
  color: #b91c1c;
}

.leaderboard-section {
  margin-top: 1.75rem;
  text-align: left;
  hyphens: none;
  -webkit-hyphens: none;
}

.leaderboard-section p,
.leaderboard-live-meta {
  text-align: left;
  hyphens: none;
  -webkit-hyphens: none;
}

.leaderboard-panel-head {
  align-items: flex-start;
}

.leaderboard-official-panel,
.leaderboard-arena {
  position: relative;
}

.leaderboard-arena::before {
  display: none;
}

.leaderboard-live-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.leaderboard-rank {
  width: 3rem;
  min-width: 3rem;
  height: 2.8rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 800;
}

.leaderboard-token {
  width: 4.2rem;
  min-width: 4.2rem;
  display: grid;
  justify-items: center;
  gap: 0.25rem;
  position: relative;
  z-index: 1;
}

.leaderboard-token span {
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: 0 0 0 6px var(--primary-light);
  font-size: 1.25rem;
  font-weight: 800;
}

.leaderboard-token small {
  color: var(--gray-500);
  font-weight: 700;
}

.leaderboard-row-main {
  flex: 1;
  min-width: 0;
}

.leaderboard-team-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.leaderboard-team-line-compact {
  margin-bottom: 0.75rem;
}

.leaderboard-climb-card {
  align-items: stretch;
  border-left: 0;
  background:
    linear-gradient(90deg, rgba(26, 86, 219, 0.055), transparent 42%),
    var(--white);
}

.leaderboard-quick-card {
  align-items: center;
  border-left: 4px solid var(--primary);
  background:
    linear-gradient(90deg, rgba(26, 86, 219, 0.04), transparent 36%),
    var(--white);
}

.leaderboard-quick-card:nth-child(1) {
  border-left-color: var(--accent);
}

.leaderboard-score-block {
  width: min(18rem, 34%);
  min-width: 13rem;
}

.leaderboard-score-label {
  display: block;
  color: var(--gray-500);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.leaderboard-score-value {
  display: block;
  color: var(--gray-900);
  font-size: 1.25rem;
  line-height: 1.2;
  margin-bottom: 0.55rem;
}

.leaderboard-official-card {
  background:
    linear-gradient(90deg, rgba(14, 159, 110, 0.055), transparent 44%),
    var(--white);
}

.proof-progress {
  height: 0.7rem;
  border-radius: 999px;
  background: var(--gray-200);
  overflow: hidden;
  margin-bottom: 0.8rem;
}

.proof-progress-fill {
  height: 100%;
  width: var(--score, 0%);
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.35s ease;
}

@media (max-width: 700px) {
  .admin-record-header,
  .leaderboard-row-card {
    flex-direction: column;
  }
  .admin-slot-board-head {
    flex-direction: column;
  }
  .admin-slot-legend {
    justify-content: flex-start;
  }
  .admin-slot-cell {
    min-height: 7rem;
  }
  .admin-slot-time-col {
    width: 9.5rem;
  }
  .admin-slot-date-col {
    width: calc((100% - 9.5rem) / 2);
  }
  .leaderboard-quick-card {
    align-items: stretch;
  }
  .leaderboard-quick-card .leaderboard-rank {
    align-self: flex-start;
  }
  .leaderboard-row-main {
    width: 100%;
  }
  .leaderboard-arena::before {
    display: none;
  }
  .leaderboard-token {
    width: 100%;
    min-width: 0;
    justify-items: start;
    grid-template-columns: auto auto;
    align-items: center;
  }
  .leaderboard-score-block {
    width: 100%;
    min-width: 0;
  }
  .leaderboard-team-line {
    align-items: flex-start;
    flex-direction: column;
  }
  .admin-field-row,
  .admin-info-row,
  .leaderboard-info-list > div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
  .eval-r3-presentation-row {
    grid-template-columns: 1fr;
  }
  .eval-r3-p3 {
    grid-template-columns: 1fr;
    justify-content: stretch;
  }
}

.admin-status {
  font-size: 0.85rem;
  font-weight: 600;
  margin-left: 0.75rem;
}

.btn-danger-text {
  color: var(--danger) !important;
}
.btn-danger-text:hover {
  background: var(--danger-light) !important;
}

.text-success {
  color: var(--accent);
}
.text-danger {
  color: var(--danger);
}

/* --- Chairman review cards ---------------------------------------- */
.review-card {
  margin-bottom: 1.25rem;
}
.review-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 1rem;
}
.review-card-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}
.form-group-inline {
  flex: 0 0 auto;
  min-width: 120px;
}
.form-group-inline label {
  font-size: 0.8rem;
}
.form-group-inline input {
  max-width: 140px;
}
.form-group-wide {
  flex: 1 1 100%;
  min-width: 200px;
}
.form-group-wide textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  resize: vertical;
}
.review-status {
  font-size: 0.85rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

/* Form select styling */
select.admin-input,
select {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  background: var(--white);
}

@media (max-width: 768px) {
  .admin-form-grid {
    grid-template-columns: 1fr;
  }
  .eval-r3-console,
  .eval-r3-query-head,
  .eval-r3-team-head {
    flex-direction: column;
  }
  .eval-r3-actions {
    justify-content: flex-start;
  }
  .eval-r3-query-arrows {
    margin-left: 0;
  }
  .eval-r3-layout {
    grid-template-columns: 1fr;
  }
  .eval-r3-query-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .eval-r3-query-card {
    position: static;
  }
  .eval-r3-response-grid,
  .eval-r3-score-grid {
    grid-template-columns: 1fr;
  }
  .eval-r3-p3 {
    grid-template-columns: 1fr;
    justify-content: stretch;
  }
  .eval-r3-p3 > .btn {
    width: 100%;
  }
  .review-card-header {
    flex-direction: column;
  }
  .review-card-fields {
    flex-direction: column;
  }
  .form-group-inline input {
    max-width: 100%;
  }
}

/* ----- Live participation stats ----- */
.stats-header {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.stats-header h2 {
  margin-bottom: 0;
}
.stats-header .live-pill {
  margin-bottom: 0.4rem;
}
.live-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.6rem;
  background: var(--danger-light);
  color: var(--danger);
  border: 1px solid rgba(224, 36, 36, 0.25);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 0 0 rgba(224, 36, 36, 0.55);
  animation: live-pulse 1.6s ease-out infinite;
}
@keyframes live-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(224, 36, 36, 0.5);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(224, 36, 36, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(224, 36, 36, 0);
  }
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 1.75rem 0 2.25rem;
}
.stat-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1rem 1.25rem;
  text-align: center;
  overflow: hidden;
  transition:
    border-color var(--transition),
    background var(--transition);
}
.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
}
.stat-card:hover {
  border-color: var(--primary);
  background: var(--gray-50);
}
.stat-num {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.stat-label {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--gray-600);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.stats-charts {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr);
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.stats-chart {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1rem 1.1rem 1.1rem;
}
.stats-chart h3 {
  margin: 0 0 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-800);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.stats-chart .bar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.stats-chart .bar-list li {
  margin: 0;
  padding: 0;
}
.bar-row {
  display: grid;
  grid-template-columns: minmax(0, 2.6fr) minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.88rem;
  opacity: 0;
  animation: bar-in 0.5s ease forwards;
}
@keyframes bar-in {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
.bar-name {
  color: var(--gray-800);
  font-weight: 500;
  line-height: 1.3;
  word-break: break-word;
  overflow-wrap: anywhere;
  text-align: left;
}
.bar-abbr {
  color: var(--gray-500);
  font-weight: 600;
  font-size: 0.78rem;
  white-space: nowrap;
}
.bar-track {
  position: relative;
  height: 8px;
  background: var(--gray-100);
  border-radius: 999px;
  overflow: hidden;
}
.bar-fill {
  display: block;
  height: 100%;
  background: var(--primary);
  border-radius: 999px;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.bar-count {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--primary);
  min-width: 2.5rem;
  text-align: right;
  font-size: 0.9rem;
}
.bar-empty {
  color: var(--gray-500);
  font-style: italic;
  padding: 0.5rem 0;
}
.stats-updated {
  margin-top: 1.25rem;
  font-size: 0.78rem;
  color: var(--gray-500);
  text-align: right;
  font-style: italic;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  .stats-charts {
    grid-template-columns: 1fr;
  }
  .stat-card {
    padding: 1.25rem 0.75rem 1rem;
  }
  .stat-num {
    font-size: 1.9rem;
  }
  .bar-row {
    grid-template-columns: minmax(0, 2.2fr) minmax(0, 0.9fr) auto;
    font-size: 0.82rem;
    gap: 0.6rem;
  }
  .stats-header {
    flex-wrap: wrap;
  }
}