/* Reset */
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background-color: #0f172a;
  color: #e5e7eb;
}

/* Center container */
.container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

/* Table */
table {
  width: 100%;
  max-width: 700px;
  border-collapse: collapse;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.3);
  margin-left: auto;
  margin-right: auto;
  table-layout: fixed;
}

/* Header (column names) */
th {
  padding: 12px;
  text-align: center;
  font-weight: 600;
  color: #f9fafb;
  border: 3px double rgba(255, 255, 255, 0.6);
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-all;
}

/* Cells */
td {
  padding: 12px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  word-wrap: break-word;
  overflow-wrap: break-word;
  word-break: break-all;
}

thead {
  background: transparent;
}


/* Light mode table borders */
html[data-theme="light"] table {
  border: 2px solid #000000;
}

html[data-theme="light"] th {
  border: 3px double #000000;
  color: #000000;
}

html[data-theme="light"] td {
  border: 2px solid #000000;
}


:root {
  color-scheme: dark;
}

:root {
  color-scheme: dark;
}

/* Prevent stray horizontal scroll on writeup pages */
html,
body {
  overflow-x: hidden;
}

body.challenge-body {
  font-family: var(--font-base);
  background: var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
}



.challenge-hero {
  position: relative;
  z-index: 1;
  padding: clamp(2.25rem, 5vw, 4.5rem) clamp(1.25rem, 3vw, 3rem);
  background:
    radial-gradient(circle at 10% 10%, rgba(240, 58, 71, 0.18), transparent 55%),
    radial-gradient(circle at 90% 10%, rgba(79, 70, 229, 0.18), transparent 55%),
    var(--bg-alt);
  box-shadow: var(--shadow);
}

.challenge-hero .hero-inner {
  max-width: min(1100px, 100% - 2.5rem);
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
}

.challenge-hero h1 {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  margin: 0;
  letter-spacing: -0.02em;
}

.challenge-tagline {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5ch;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.badge.difficulty.hard[data-difficulty="advanced"] {
  background: rgba(214, 69, 95, 0.18);
  color: var(--danger);
}

.badge.difficulty.easy[data-difficulty="advanced"] {
  background: rgba(214, 69, 95, 0.18);
  color: var(--easy);
}

.terminal {
  background: #0d1117;
  border: 3px solid #71757a;
  border-radius: 8px;
  padding: 0 1rem;

  font-family: "Fira Code", monospace;
  font-size: 0.9rem;
  line-height: 1.4;

  box-sizing: border-box;

  margin: 0 auto;

  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: auto;

  white-space: pre;
  color: #e5e7eb;
}

/* Ensure inline Prism code blocks don't force horizontal page scroll */
.challenge-main code[class*="language-"],
.challenge-main pre[class*="language-"] {
  display: block;
  max-width: 100%;
  margin: 0 auto;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

/* Prevent images or other media from overflowing */
.challenge-main img,
.challenge-main video,
.challenge-main svg {
  display: block;
  max-width: 100%;
  height: auto;
  margin-left: auto;
  margin-right: auto;
}

/* Prevent cards from showing scrollbars when content fits */
.card {
  overflow: hidden;
}

.note {
  background: #0d1117;
  border: 3px solid #71757a;
  border-radius: 8px;
  padding-left: 1rem;
  padding-right: 1rem;
  font-family: "Fira Code", monospace;
  font-size: 0.9rem;
  line-height: 1.4;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: break-word;
  color: #e5e7eb;
}

.challenge-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  padding: 1.25rem;
  border-radius: var(--radius);
  background: rgba(1, 1, 41, 0.55);
  border: 1px solid var(--border);
}

html[data-theme="light"] .challenge-meta {
  background: rgba(255, 255, 255, 0.65);
}

.challenge-meta>* {
  flex: 1 1 150px;
}

.challenge-meta .meta-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.challenge-meta .meta-value {
  font-weight: 600;
  font-size: 1rem;
}

.challenge-main {
  flex: 1;
  width: 100%;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1.25rem, 3vw, 3rem);
  display: grid;
  gap: clamp(1rem, 3vw, 1.5rem);
  max-width: min(1500px, 100% - 1.5rem);
  margin: 0 auto;
}

.challenge-icon-container {
  width: 72px;
  height: 72px;
  flex: 0 0 auto;
}

.challenge-icon {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card {
  background: var(--card-bg);
  padding: clamp(1.5rem, 3.5vw, 2.1rem);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.section-heading {
  display: grid;
  gap: 0.2rem;
  margin-bottom: 0.75rem;
}

.section-heading .eyebrow {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin: 0;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.75rem;
}

.overview-points {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.overview-points li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.overview-points li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-strong);
}

.section-download .btn.primary {
  margin-top: 1rem;
}

.download-note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hint-list {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1rem;
}

.hint-toggle {
  width: 100%;
  text-align: left;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(6, 6, 8, 0.4);
  color: inherit;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 200ms ease, border-color 200ms ease;
}

html[data-theme="light"] .hint-toggle {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(148, 163, 184, 0.3);
  color: #1f2430;
}

.hint-toggle:hover,
.hint-toggle:focus-visible {
  border-color: var(--accent-strong);
  background: rgba(181, 18, 47, 0.18);
  cursor: pointer;
}

.hint-toggle.active {
  background: rgba(76, 201, 240, 0.14);
  border-color: rgba(76, 201, 240, 0.45);
}

.hint-content {
  margin: 0.6rem 0 0;
  padding: 0.6rem 0.9rem;
  border-left: 2px solid var(--accent-strong);
  background: rgba(6, 6, 8, 0.35);
  border-radius: 0 12px 12px 12px;
  color: var(--text-muted);
}

html[data-theme="light"] .hint-content {
  background: rgba(255, 255, 255, 0.65);
}

.writeup-note {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.writeup-toggle {
  margin-bottom: 1.25rem;
}

.writeup-body {
  background: rgba(6, 6, 8, 0.4);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
}

html[data-theme="light"] .writeup-body {
  background: rgba(255, 255, 255, 0.65);
}

.writeup-body[hidden] {
  display: none !important;
}

.writeup-body ol {
  margin: 0;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.challenge-footer {
  text-align: center;
  padding: 2rem 1rem 3rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.btn.outline {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
}

.btn.outline:hover,
.btn.outline:focus-visible {
  border-color: var(--accent-strong);
  color: var(--accent-strong);
}

.writeups-table {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: grid;
}

.writeups-row {
  display: grid;
  grid-template-columns: minmax(260px, 1.8fr) 1.1fr 0.9fr 0.8fr;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: inherit;
  text-decoration: none;
  transition: background 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.writeups-row:last-child {
  border-bottom: none;
}

.writeups-head {
  background: rgba(255, 255, 255, 0.02);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

.writeups-head [role="columnheader"] {
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: color 150ms ease;
}

.writeups-head [role="columnheader"]:hover {
  color: var(--text);
}

.writeups-head .active {
  color: var(--accent-strong);
}

.sort-icon {
  font-size: 1.25em;
  opacity: 0.9;
  line-height: 1;
  display: inline-block;
  min-width: 1em;
}

.sort-icon::after {
  content: '↑';
  opacity: 0;
  transition: opacity 150ms ease;
}

.writeups-head [role="columnheader"]:not(.active):hover .sort-icon::after {
  content: '↑';
  opacity: 0.4;
}

.writeups-head [role="columnheader"].active.asc .sort-icon::after {
  content: '↑';
  opacity: 1;
}

.writeups-head [role="columnheader"].active.desc .sort-icon::after {
  content: '↓';
  opacity: 1;
}

.writeups-row:not(.writeups-head):hover {
  background: rgba(181, 18, 47, 0.08);
  border-color: rgba(181, 18, 47, 0.25);
  transform: translateY(-1px);
}

.machine-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  justify-self: start;
}

.machine-cell img {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  object-fit: contain;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: transparent;
}

.machine-cell strong {
  display: block;
  font-size: 1rem;
}

.machine-cell small {
  color: var(--text-muted);
}

.writeups-row strong {
  font-weight: 700;
}

.writeups-row small {
  color: var(--text-muted);
}

@media (max-width: 680px) {
  .challenge-meta {
    padding: 1rem;
  }

  .challenge-meta .meta-value {
    font-size: 0.95rem;
  }

  .card {
    padding: 1.5rem;
  }

  .writeups-row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .writeups-head {
    display: none;
  }

  .col-tag {
    justify-self: start;
  }
}

/* Light mode background color */

html[data-theme="light"] code[class*="language-"],
html[data-theme="light"] pre[class*="language-"] {
  color: #334155;
  background: none;
  text-shadow: 0 1px rgba(255, 255, 255, 0.5);
}

html[data-theme="light"] :not(pre)>code[class*="language-"],
html[data-theme="light"] pre[class*="language-"] {
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

html[data-theme="light"] .terminal,
html[data-theme="light"] .note {
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: #334155;
}

html[data-theme="light"] .token.comment,
html[data-theme="light"] .token.prolog,
html[data-theme="light"] .token.doctype,
html[data-theme="light"] .token.cdata {
  color: #64748b;
}

html[data-theme="light"] .token.punctuation {
  color: #94a3b8;
}

html[data-theme="light"] .token.namespace {
  opacity: .7;
}

html[data-theme="light"] .token.property,
html[data-theme="light"] .token.tag,
html[data-theme="light"] .token.boolean,
html[data-theme="light"] .token.number,
html[data-theme="light"] .token.constant,
html[data-theme="light"] .token.symbol,
html[data-theme="light"] .token.deleted {
  color: #905;
}

html[data-theme="light"] .token.selector,
html[data-theme="light"] .token.attr-name,
html[data-theme="light"] .token.string,
html[data-theme="light"] .token.char,
html[data-theme="light"] .token.builtin,
html[data-theme="light"] .token.inserted {
  color: #690;
}

html[data-theme="light"] .token.operator,
html[data-theme="light"] .token.entity,
html[data-theme="light"] .token.url,
html[data-theme="light"] .language-css .token.string,
html[data-theme="light"] .style .token.string {
  color: #9a6e3a;
  background: hsla(0, 0%, 100%, .5);
}

html[data-theme="light"] .token.atrule,
html[data-theme="light"] .token.attr-value,
html[data-theme="light"] .token.keyword {
  color: #07a;
}

html[data-theme="light"] .token.function,
html[data-theme="light"] .token.class-name {
  color: #dd4a68;
}

html[data-theme="light"] .token.regex,
html[data-theme="light"] .token.important,
html[data-theme="light"] .token.variable {
  color: #e90;
}

/* Search input additions */
.search-container {
  display: flex;
  margin-left: auto;
  justify-content: flex-end;
  position: relative;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  pointer-events: none;
}

html[data-theme="light"] .search-icon {
  color: rgba(15, 23, 42, 0.4);
}

.search-input {
  padding: 0.55rem 1rem 0.55rem 2.2rem;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(6, 6, 8, 0.4);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  width: 100%;
  max-width: 320px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-input:focus {
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 1px rgba(76, 201, 240, 0.2);
}

html[data-theme="light"] .search-input {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(148, 163, 184, 0.4);
  color: #1f2430;
}

html[data-theme="light"] .search-input:focus {
  border-color: var(--accent-strong);
}