/* Codji — skinned to match brenopaiva.com, the same way Chordji is
   (Chordji spec §10). Codji is a separate repo, so the portfolio's palette
   tokens are copied here verbatim rather than imported. Single theme, no
   dark mode: the portfolio has none and Codji should look like it belongs.
   This replaces the original Claude-styled light/dark skin. */

:root {
  --primary-0: #809EC0;
  --primary-1: #CADFF7;
  --primary-2: #A3C1E1;
  --primary-3: #647F9D;
  --primary-4: #39516B;
  --secondary-1-0: #ABE692;
  --secondary-1-1: #D9FCCA;
  --secondary-1-2: #C0F3AB;
  --secondary-1-3: #96CF7E;
  --secondary-1-4: #5B8C46;
  --secondary-2-0: #A183C5;
  --secondary-2-1: #DFCBF8;
  --secondary-2-2: #C1A5E3;
  --secondary-2-3: #8368A3;
  --secondary-2-4: #533B6F;

  /* The site has no red. Same pair Chordji added, kept identical so the two
     games agree on what "wrong" looks like. */
  --wrong-0: #E08585;
  --wrong-1: #A34B4B;

  /* Syntax colours live on the dark --primary-4 code ground. Every one is a
     palette token except --code-number: the ramps hold no warm hue, and
     numbers need to separate from strings and types at a glance, so one warm
     token is added at the same pastel saturation as the rest. */
  --code-bg: var(--primary-4);
  --code-fg: #E8EEF5;
  --code-keyword: #DFCBF8;
  --code-type: #CADFF7;
  --code-string: #C0F3AB;
  --code-number: #EFD6A6;
  --code-comment: #809EC0;

  --ink: #14202c;
  --key-white: #FAF7F0;
  --key-outline: #1a1a1a;
  --panel-radius-x: 140px;
  --panel-radius-y: 44px;
}

* { box-sizing: border-box; }

html, body { overflow-x: hidden; }

body {
  margin: 0;
  min-height: 100%;
  background: var(--primary-2);
  color: var(--ink);
  font-family: 'Share Tech Mono', monospace;
  font-size: 16px;
  line-height: 1.5;
}

.hidden { display: none !important; }

a { color: var(--ink); }

ul { list-style: none; margin: 0; padding: 0; }

kbd {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.72em;
  padding: 1px 5px;
  border: 1px solid var(--primary-4);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.55);
  color: var(--primary-4);
  white-space: nowrap;
}

/* ---------- Nav + header ---------- */

.site-nav {
  background: var(--primary-4);
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  height: 55px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.nav-brand {
  color: var(--secondary-1-0);
  font-family: 'VT323', monospace;
  font-size: 26px;
  letter-spacing: 1px;
}

.nav-back {
  color: white;
  text-decoration: none;
  font-size: 15px;
}
.nav-back:hover { color: var(--secondary-1-0); }

.space-header {
  background: var(--primary-4);
  padding: 34px 20px 30px;
  display: flex;
  flex-flow: column;
  align-items: center;
  justify-content: center;
}

.text-header {
  margin: 0;
  text-align: center;
  font-family: 'VT323', monospace;
  font-weight: normal;
  font-size: clamp(44px, 12vw, 80px);
  line-height: 1;
  color: var(--secondary-1-0);
  letter-spacing: clamp(3px, 1.4vw, 10px);
  text-shadow: -3px 0 #222, 0 3px #222, 3px 0 #222, 0 -3px #222;
}

.tagline {
  margin: 14px 0 0;
  color: var(--primary-1);
  letter-spacing: 2px;
  font-size: 15px;
  text-align: center;
}

/* While a question is up the title band collapses so the code block sits
   above the fold on a phone. */
body.is-playing .space-header { padding: 12px 20px 14px; }
body.is-playing .text-header { font-size: clamp(26px, 7vw, 38px); letter-spacing: clamp(2px, 1vw, 6px); }
body.is-playing .tagline { display: none; }

.site-footer {
  margin-top: 40px;
  background: var(--primary-4);
  color: var(--primary-1);
  text-align: center;
  padding: 18px 20px;
  font-size: 14px;
}
.site-footer a { color: var(--secondary-1-0); }

/* ---------- Layout ---------- */

.app {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px 16px 8px;
}

.screen {
  display: flex;
  flex-flow: column;
  gap: 22px;
}

/* Panels use the portfolio's .tv card treatment. The radius is given in
   absolute units rather than 50% / 10% so a 900px panel keeps the same
   curvature a 300px project card has, instead of collapsing into a lens. */
.panel {
  background: var(--secondary-2-2);
  border: 2px solid var(--secondary-2-3);
  border-radius: var(--panel-radius-x) / var(--panel-radius-y);
  box-shadow: 0 1px 13px 1px rgba(0, 0, 0, 0.28);
  padding: 40px clamp(24px, 5vw, 48px);
  display: flex;
  flex-flow: column;
  gap: 22px;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
}

.panel--wide { max-width: 100%; }

.panel-title {
  margin: 0;
  font-family: 'VT323', monospace;
  font-weight: normal;
  font-size: clamp(30px, 5vw, 40px);
  text-align: center;
  color: white;
  text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
  letter-spacing: 1px;
}

.panel-title--small { font-size: clamp(24px, 4vw, 30px); }

/* ---------- Buttons (the .project-links h3 treatment) ---------- */

.btn {
  font-family: 'Share Tech Mono', monospace;
  font-size: 16px;
  color: var(--ink);
  background: var(--primary-1);
  border: 2px solid var(--primary-0);
  border-radius: 20px;
  padding: 10px 18px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.08s ease;
}

.btn:hover:not(:disabled) { background: white; }
.btn:active:not(:disabled) { transform: translateY(2px); }

.btn:focus-visible,
.toggle-btn:focus-visible,
.mode-btn:focus-visible {
  outline: 3px solid var(--secondary-2-4);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--secondary-1-1);
  border: 2px solid var(--secondary-1-0);
  font-size: 20px;
}
.btn-primary:hover:not(:disabled) { background: var(--secondary-1-2); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.5);
  border: 2px solid var(--secondary-2-3);
}
.btn-ghost:hover:not(:disabled) { background: rgba(255, 255, 255, 0.8); }

.btn-danger {
  background: var(--wrong-0);
  border: 2px solid var(--wrong-1);
  color: #2b1010;
}
.btn-danger:hover:not(:disabled) { background: #eb9b9b; }

.btn-large {
  font-size: clamp(20px, 3.4vw, 24px);
  padding: 13px 30px;
  align-self: center;
}

.btn-small { font-size: 14px; padding: 6px 14px; }

.btn-icon {
  padding: 6px 12px;
  border-radius: 14px;
  font-size: 15px;
}

/* ---------- Setup screen ---------- */

.field {
  display: flex;
  flex-flow: column;
  gap: 10px;
}

.field-label {
  font-family: 'VT323', monospace;
  font-size: 26px;
  color: var(--secondary-2-4);
  letter-spacing: 1px;
}

.field-note {
  margin: 0;
  font-size: 14px;
  color: var(--secondary-2-4);
  min-height: 1.5em;
}

.mode-group {
  display: grid;
  gap: 10px;
}

.mode-btn {
  font-family: 'Share Tech Mono', monospace;
  text-align: left;
  display: grid;
  gap: 3px;
  background: rgba(255, 255, 255, 0.5);
  border: 2px solid var(--secondary-2-3);
  border-radius: 18px;
  padding: 12px 16px;
  cursor: pointer;
  color: var(--ink);
  transition: background 0.15s ease, transform 0.08s ease;
}
.mode-btn:hover { background: rgba(255, 255, 255, 0.8); }
.mode-btn.active {
  background: var(--secondary-1-1);
  border-color: var(--secondary-1-4);
  box-shadow: inset 0 0 0 2px var(--secondary-1-0);
}

.mode-name {
  font-family: 'VT323', monospace;
  font-size: 26px;
  line-height: 1.1;
}
.mode-blurb { font-size: 14px; }
.mode-skill {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--secondary-2-4);
}
.mode-btn.active .mode-skill { color: var(--secondary-1-4); }

.toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toggle-btn {
  font-family: 'Share Tech Mono', monospace;
  font-size: 16px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.5);
  border: 2px solid var(--secondary-2-3);
  border-radius: 20px;
  padding: 8px 20px;
  cursor: pointer;
  flex: 1 1 auto;
  transition: background 0.15s ease, transform 0.08s ease;
}
.toggle-btn:hover { background: rgba(255, 255, 255, 0.8); }
.toggle-btn:active { transform: translateY(2px); }
.toggle-btn.active {
  background: var(--secondary-1-1);
  border-color: var(--secondary-1-4);
  box-shadow: inset 0 0 0 2px var(--secondary-1-0);
}

.toggle-group--sub .toggle-btn { font-size: 15px; padding: 6px 16px; }

.stat-line {
  margin: 0;
  text-align: center;
  font-size: 15px;
  color: var(--secondary-2-4);
  min-height: 1.5em;
}

/* Recent-session accuracy bars — same chunky outline as everything else. */
.recent-trend {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 10px;
  min-height: 34px;
}

.recent-trend:empty { min-height: 0; }

.trend-label {
  font-size: 13px;
  color: var(--secondary-2-4);
  letter-spacing: 1px;
}

.trend-bars {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 30px;
}

.trend-bar {
  width: 10px;
  min-height: 4px;
  background: var(--secondary-1-0);
  border: 2px solid var(--secondary-1-4);
  border-radius: 3px 3px 0 0;
}

.setup-actions {
  display: flex;
  flex-flow: column;
  align-items: center;
  gap: 12px;
}

/* ---------- Refresher + reference ---------- */

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

.refresher-heading { display: flex; flex-flow: column; gap: 4px; min-width: 0; }

.refresher-subtitle {
  margin: 0;
  font-size: 14px;
  color: var(--secondary-2-4);
}

.reference-list {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.reference-card {
  background: var(--primary-1);
  border: 2px solid var(--primary-0);
  border-radius: 20px;
  padding: 14px 18px;
  display: flex;
  flex-flow: column;
  gap: 8px;
  min-width: 0;
}

.reference-card-title {
  font-family: 'VT323', monospace;
  font-size: 24px;
  line-height: 1.1;
  color: var(--primary-4);
}

.reference-snippet {
  margin: 0;
  background: var(--code-bg);
  border: 2px solid var(--key-outline);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 13px;
  line-height: 1.6;
  color: var(--code-fg);
  /* Cheat-sheet cards sit in a narrow grid column, so a long line wraps
     rather than being clipped — the question's code window keeps `pre`. */
  white-space: pre-wrap;
  word-break: break-word;
}

.reference-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

.reference-tier-section { margin-bottom: 22px; }
.reference-tier-section:last-child { margin-bottom: 0; }

.reference-tier-heading {
  margin: 0 0 10px;
  font-family: 'VT323', monospace;
  font-weight: normal;
  font-size: 28px;
  color: var(--secondary-2-4);
  letter-spacing: 1px;
}

/* ---------- Question screen ---------- */

.play-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 100%;
}

.progress {
  font-family: 'VT323', monospace;
  font-size: 26px;
  color: var(--primary-4);
}

.streak { font-size: 18px; }

.timer-bar {
  height: 8px;
  background: rgba(57, 81, 107, 0.25);
  border: 2px solid var(--primary-4);
  border-radius: 6px;
  overflow: hidden;
  margin-top: -12px;
}

.timer-bar span {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--secondary-1-0);
  transition: width 0.9s linear;
}

.timer-bar.is-low span { background: var(--wrong-0); }

.prompt-question {
  margin: 0;
  text-align: center;
  font-family: 'VT323', monospace;
  font-size: clamp(26px, 4.4vw, 34px);
  line-height: 1.15;
  color: white;
  text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
  letter-spacing: 1px;
}

/* ---------- The code window ---------- */

.code-window {
  background: var(--code-bg);
  border: 3px solid var(--key-outline);
  border-radius: 10px;
  box-shadow: 0 4px 0 0 rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.code-titlebar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  border-bottom: 3px solid var(--key-outline);
  padding: 7px 12px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--primary-1);
}

.code-dots { display: flex; gap: 5px; flex: 0 0 auto; }

.code-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary-0);
}
.code-dot:nth-child(1) { background: var(--wrong-0); }
.code-dot:nth-child(2) { background: var(--code-number); }
.code-dot:nth-child(3) { background: var(--secondary-1-0); }

.code-filename { color: var(--primary-1); }

.code-body {
  padding: 14px 16px;
  overflow-x: auto;
  font-family: 'Share Tech Mono', monospace;
  font-size: clamp(13px, 2.6vw, 15px);
  line-height: 1.7;
  color: var(--code-fg);
}

.code-readonly {
  margin: 0;
  white-space: pre;
  font-family: inherit;
  font-size: inherit;
  color: var(--code-fg);
  opacity: 0.72;
}

.tok-keyword { color: var(--code-keyword); }
.tok-type { color: var(--code-type); }
.tok-string { color: var(--code-string); }
.tok-number { color: var(--code-number); }
.tok-comment { color: var(--code-comment); font-style: italic; }

.code-input-wrap {
  margin: 4px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* A blinking prompt caret marks the one line the player owns. */
.code-caret {
  flex: 0 0 auto;
  color: var(--secondary-1-0);
  animation: caret-blink 1.1s steps(2, start) infinite;
}

@keyframes caret-blink { to { opacity: 0.25; } }

.code-input {
  flex: 1 1 auto;
  min-width: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid var(--secondary-1-0);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: 'Share Tech Mono', monospace;
  font-size: inherit;
  color: var(--key-white);
  caret-color: var(--secondary-1-0);
  outline: none;
}
.code-input::placeholder { color: rgba(255, 255, 255, 0.35); }
.code-input:focus {
  background: rgba(255, 255, 255, 0.14);
  box-shadow: 0 0 0 3px rgba(171, 230, 146, 0.35);
}
.code-input:disabled { opacity: 1; }
.code-input.is-correct { border-color: var(--secondary-1-0); background: rgba(171, 230, 146, 0.18); }
.code-input.is-wrong { border-color: var(--wrong-0); background: rgba(224, 133, 133, 0.18); }

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

.hint-text {
  margin: 0;
  background: var(--primary-1);
  border: 2px solid var(--primary-0);
  border-radius: 20px;
  padding: 12px 18px;
  font-size: 15px;
}
.hint-text::before { content: "💡 "; }

/* ---------- Feedback (inline, never a separate screen) ---------- */

.feedback {
  display: flex;
  flex-flow: column;
  gap: 10px;
  align-items: center;
  text-align: center;
  padding: 18px;
  border-radius: 22px;
  border: 2px solid var(--secondary-2-3);
  background: rgba(255, 255, 255, 0.55);
}

.feedback--correct {
  background: var(--secondary-1-1);
  border-color: var(--secondary-1-4);
  animation: soft-pulse 0.45s ease-out;
}

@keyframes soft-pulse {
  0% { transform: scale(0.985); box-shadow: 0 0 0 0 rgba(91, 140, 70, 0.5); }
  100% { transform: scale(1); box-shadow: 0 0 0 16px rgba(91, 140, 70, 0); }
}

.feedback--incorrect {
  background: var(--wrong-0);
  border-color: var(--wrong-1);
}

.feedback-status {
  margin: 0;
  font-family: 'VT323', monospace;
  font-size: clamp(28px, 5vw, 38px);
  letter-spacing: 1px;
}

.feedback-answer {
  margin: 0;
  font-size: 15px;
  background: var(--code-bg);
  border: 2px solid var(--key-outline);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--code-fg);
  max-width: 100%;
  overflow-x: auto;
  white-space: pre;
}

.feedback-explanation { margin: 0; font-size: 15px; font-style: italic; }

.shake { animation: shake 0.36s ease-in-out; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); }
  40% { transform: translateX(7px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* ---------- Results ---------- */

.results-summary {
  display: flex;
  flex-flow: column;
  align-items: center;
  gap: 6px;
}

.results-accuracy {
  font-family: 'VT323', monospace;
  font-size: clamp(64px, 16vw, 104px);
  line-height: 1;
  color: var(--secondary-1-0);
  text-shadow: -3px 0 #222, 0 3px #222, 3px 0 #222, 0 -3px #222;
}

.results-sub { font-size: 18px; }

.results-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 6px;
}

.chip {
  background: rgba(255, 255, 255, 0.6);
  border: 2px solid var(--secondary-2-3);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 14px;
}

.most-missed {
  margin: 0;
  text-align: center;
  font-size: 15px;
  color: var(--secondary-2-4);
  min-height: 1.5em;
}

.results-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.results-actions .btn-large { align-self: auto; }

.review-panel {
  background: var(--primary-1);
  border-color: var(--primary-0);
}
.review-panel .panel-title { color: var(--primary-4); text-shadow: none; }

.review-list {
  display: flex;
  flex-flow: column;
  gap: 8px;
}

.review-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: start;
  gap: 10px;
  padding: 10px 14px;
  border: 2px solid var(--primary-0);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.6);
}

.review-correct { border-color: var(--secondary-1-4); background: var(--secondary-1-1); }
.review-incorrect {
  border-color: var(--wrong-1);
  background: color-mix(in srgb, var(--wrong-0) 55%, white);
}
.review-unanswered { border-color: var(--primary-3); background: rgba(255, 255, 255, 0.45); }

.review-icon {
  font-size: 20px;
  text-align: center;
  font-weight: bold;
  line-height: 1.3;
}

.review-body { min-width: 0; display: flex; flex-flow: column; gap: 4px; }

.review-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

.review-title { font-size: 16px; }

.review-meta {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.7;
}

.review-answer {
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}

.review-answer .review-code {
  background: rgba(20, 32, 44, 0.1);
  border-radius: 4px;
  padding: 1px 5px;
}

/* ---------- Modals ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 32, 44, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 200;
}

.modal-card {
  background: var(--secondary-2-2);
  border: 2px solid var(--secondary-2-3);
  border-radius: 28px;
  padding: 26px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: 0 4px 22px rgba(0, 0, 0, 0.4);
}

.modal-card h2 {
  margin: 0 0 8px;
  font-family: 'VT323', monospace;
  font-weight: normal;
  font-size: 32px;
}

.modal-card p { margin: 0 0 18px; font-size: 15px; }

.modal-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* The reference is a scrolling library, not a two-button prompt. */
.modal-card--wide {
  max-width: 860px;
  max-height: 86vh;
  text-align: left;
  padding: 0;
  display: flex;
  flex-flow: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 26px;
  border-bottom: 2px solid var(--secondary-2-3);
  flex: 0 0 auto;
}

.modal-header h2 { margin: 0; }

.modal-body {
  padding: 20px 26px 26px;
  overflow-y: auto;
}

/* ---------- Responsive (works from 360px, no horizontal scroll) ---------- */

@media (max-width: 640px) {
  :root {
    --panel-radius-x: 84px;
    --panel-radius-y: 32px;
  }

  .app { padding: 20px 12px 4px; }
  .panel { padding: 32px 18px; gap: 18px; }
  .toggle-btn { padding: 8px 12px; }
  .field-label { font-size: 23px; }
  .reference-list { grid-template-columns: 1fr; }
  .review-item { grid-template-columns: 22px 1fr; padding: 9px 10px; gap: 8px; }
  .review-title { font-size: 15px; }
  .modal-header { padding: 14px 18px; }
  .modal-body { padding: 16px 18px 20px; }

  /* The code window borrows back part of the panel's padding so a long line
     has as much room as the viewport can give it. */
  .code-window {
    width: calc(100% + 22px);
    margin-left: -11px;
    margin-right: -11px;
  }
}

@media (max-width: 520px) {
  .play-actions kbd,
  .feedback kbd { display: none; }
}

@media (max-width: 380px) {
  .btn { font-size: 15px; padding: 9px 14px; }
  .code-body { padding: 12px 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .btn:active:not(:disabled),
  .toggle-btn:active { transform: none; }
  .code-caret { animation: none; }
}