/*
  Neon-cyberpunk direction from docs/visual-design.md, with the palette
  finalized here (see the same doc's updated "Palette roles" section for the
  contrast-ratio math). Colors are custom properties named by ROLE, not by
  hue, so every rule below reads as "why", not just "what color".
*/

/* Self-hosted display face for headings only (docs/visual-design.md's
   "distinctive self-hosted angular display face" open item) — body text
   stays on the system stack below for readability, per that doc's own
   reasoning. A local relative url(), not a CDN link: keeps the app fully
   self-contained per R3, works over a plain file:// open (unlike ES
   modules, @font-face resource loads aren't blocked by the file://
   same-origin restriction), and needs no separate license-fetch step at
   runtime. font-display: optional means it's used only if it loads
   near-instantly (true for a small same-origin local file) and otherwise
   the fallback stack is used for the whole page load with no later
   swap — avoiding the FOUT the original system-font choice was written
   to avoid. Subset to printable ASCII + bold-only instance of the
   upstream variable font, see fonts/OFL.txt for the license. */
@font-face {
  font-family: Orbitron;
  src: url("../fonts/orbitron-bold-subset.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: optional;
}

:root {
  --color-bg: #0d0d14;
  --color-text: #eef0f5;
  --color-economy: #4deeea;
  --color-standard: #ff6ec7;
  --color-luxury: #f9f871;
  --color-focus: #fff;
  --color-panel-border: #33333f;
  --font-body: ui-sans-serif, "Segoe UI", roboto, sans-serif;
  --font-heading: "Orbitron", var(--font-body);
  --transition-fast: 120ms ease;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
  }
}

/* ---------------------------------------------------------------------- */

/* Motion effects (docs/visual-design.md's "glow/glitch/scanline" open      */

/* item). Both hard constraints from that doc apply to everything below:   */

/*   - nothing flashes faster than 3x/second (seizure-risk rule, no        */

/*     exceptions) — every keyframe cycle here runs on the order of        */

/*     seconds, nowhere close;                                             */

/*   - every animation has a prefers-reduced-motion fallback that removes  */

/*     the animation entirely, not just slows it down.                    */

/* ---------------------------------------------------------------------- */

@keyframes title-glow-pulse {
  0%,
  100% {
    text-shadow:
      0 0 4px var(--color-economy),
      0 0 10px rgb(77 238 234 / 45%);
  }

  50% {
    text-shadow:
      0 0 8px var(--color-economy),
      0 0 20px rgb(77 238 234 / 65%);
  }
}

@keyframes scanline-drift {
  from {
    background-position: 0 0;
  }

  to {
    background-position: 0 12px;
  }
}

/* Star Map "transporter beam-in" reveal, played once when a sector is
   ACTUALLY newly placed (js/ui/render.js's previouslyOccupiedSectors diff
   decides this — see .just-revealed usage below). Two parts: the star
   itself materializes (fade/scale/glow settling to its normal static
   glow), while a separate ::after pseudo-element on the <td> sweeps a
   cyan band down through the cell to sell the "beaming down" look.
   ~550ms, single pass, ease-out — nowhere near the 3-flashes/second
   threshold above. */
@keyframes tile-materialize {
  0% {
    opacity: 0;
    transform: scale(0.4);
    text-shadow:
      0 0 10px var(--color-economy),
      0 0 20px var(--color-economy);
  }

  60% {
    opacity: 1;
    transform: scale(1.15);
    text-shadow:
      0 0 14px var(--color-economy),
      0 0 26px var(--color-economy);
  }

  100% {
    opacity: 1;
    transform: scale(1);

    /* Settles into .sector-star's own static glow (0 0 3px currentcolor)
       so the animation's end state hands off seamlessly. */
    text-shadow: 0 0 3px currentcolor;
  }
}

@keyframes tile-beam-sweep {
  0% {
    transform: translateY(-100%);
    opacity: 0.9;
  }

  70% {
    opacity: 0.5;
  }

  100% {
    transform: translateY(100%);
    opacity: 0;
  }
}

* {
  box-sizing: border-box;
}

/* Defensive backstop for WCAG 1.4.10 Reflow: .star-map-scroll and
   .market-scroll are the only elements meant to scroll horizontally.
   Nested overflow:auto containers are supposed to stop their content's
   min-content width from inflating an ancestor flex item's automatic
   minimum size, but that isn't fully reliable across engines in
   practice — this closes the gap without touching pinch-to-zoom
   (no touch-action/user-scalable restriction here). Set on <html>, not
   <body>: the root scrolling box in standard mode is documentElement,
   so overflow-x on body alone doesn't stop the page itself from
   growing a horizontal scrollbar. */
html {
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.5;
}

/* Every heading site-wide gets the display face — not just the page
   title — since docs/visual-design.md's open item was "headings" in
   general, not h1 specifically. Body text (paragraphs, buttons, table
   cells, list items) is untouched, still on --font-body. Orbitron's
   glyphs are geometric/wide, so a little extra letter-spacing keeps
   longer headings ("Founding a Corporation") from looking cramped. */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  letter-spacing: 0.03em;
}

/* Subtle CRT-style scanline overlay, drifting slowly downward. A pseudo-
   element rather than a real DOM node: purely decorative, never enters
   the accessibility tree at all (stronger than aria-hidden), and
   pointer-events: none keeps it from ever intercepting a click. Opacity is
   low enough (~2%) that it doesn't meaningfully affect any text's
   contrast ratio underneath it — this is atmosphere, not a foreground
   element. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgb(238 240 245 / 3%) 0,
    rgb(238 240 245 / 3%) 1px,
    transparent 1px,
    transparent 3px
  );
  animation: scanline-drift 9s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  body::before {
    animation: none;
  }
}

/* ---------------------------------------------------------------------- */

/* Footer — a visual bookend to header (same border/padding, mirrored).    */

/* Placed before the higher-specificity .skip-links a below so Stylelint's */

/* no-descending-specificity rule (ascending order for overlapping         */

/* properties like color) is satisfied.                                   */

/* ---------------------------------------------------------------------- */

/* Text stays the full-contrast --color-text (not dimmed) so de-emphasis
   comes from font-size/spacing, not a lower-contrast color that would
   risk falling below WCAG AA (R11) for the sake of looking "muted". */
footer {
  padding: 1rem;
  border-top: 1px solid var(--color-panel-border);
  font-size: 0.85rem;
  text-align: center;
}

footer a {
  color: var(--color-economy);
  text-decoration: underline;
}

/* ---------------------------------------------------------------------- */

/* Skip links — standard visually-hidden-until-focused pattern (R10/R11)   */

/* ---------------------------------------------------------------------- */

.skip-links {
  position: relative;
}

/* Same clip-path technique as .visually-hidden below, not the classic
   left: -9999px off-screen trick — that old technique creates negative
   scrollable overflow that inflates the page's scrollWidth and can trigger
   page-level horizontal scroll at narrow viewports, which is exactly what
   the narrow-viewport work here is trying to eliminate. */
.skip-links a {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  background: var(--color-bg);
  color: var(--color-text);
  padding: 0.5em 1em;
  border: 2px solid var(--color-focus);
  z-index: 10;
}

.skip-links a:focus {
  width: auto;
  height: auto;
  overflow: visible;
  clip-path: none;
  white-space: normal;
  left: 0.5em;
  top: 0.5em;
}

/* ---------------------------------------------------------------------- */

/* Focus visibility — one consistent treatment for every interactive       */

/* element, since the default browser ring is easy to lose against a dark  */

/* background.                                                             */

/* ---------------------------------------------------------------------- */

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  box-shadow: 0 0 8px var(--color-focus);
}

/* ---------------------------------------------------------------------- */

/* Header                                                                  */

/* ---------------------------------------------------------------------- */

header {
  padding: 1rem;
  border-bottom: 1px solid var(--color-panel-border);
}

header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  letter-spacing: 0.02em;

  /* Slow (4s), low-amplitude "neon sign" breathing glow — not a flash;
     text color itself never changes, only the shadow's blur/opacity, so
     this doesn't touch the title's own WCAG contrast ratio. */
  animation: title-glow-pulse 4s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  header h1 {
    animation: none;
    text-shadow:
      0 0 4px var(--color-economy),
      0 0 10px rgb(77 238 234 / 45%);
  }
}

#turn-status {
  margin: 0;
  font-size: 1rem;
}

#contextual-hint {
  margin-top: 0.5rem;
}

#contextual-hint summary {
  cursor: pointer;
}

/* ---------------------------------------------------------------------- */

/* Layout — single DOM order always; a wider viewport repositions          */

/* sections visually via grid-template-areas without reordering the DOM,   */

/* per docs/ui-design.md's responsive strategy.                            */

/* ---------------------------------------------------------------------- */

main {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem;
}

main > section {
  border: 1px solid var(--color-panel-border);
  border-radius: 4px;
  padding: 1rem;
}

main > section > h2 {
  margin-top: 0;
  font-size: 1.1rem;
}

/* ---------------------------------------------------------------------- */

/* Game over summary                                                       */

/* ---------------------------------------------------------------------- */

#game-over {
  margin: 1rem;
  padding: 1rem;
  border: 1px solid var(--color-luxury);
  border-radius: 4px;
}

#game-over h2 {
  margin-top: 0;
}

#final-standings-list {
  margin: 0;
  padding-left: 1.5rem;
}

@media (width >= 900px) {
  main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-areas:
      "star-map your-ship"
      "star-map market"
      "event-log event-log";
  }

  #star-map {
    grid-area: star-map;
  }

  #your-ship {
    grid-area: your-ship;
  }

  #market {
    grid-area: market;
  }

  #event-log {
    grid-area: event-log;
  }
}

/* ---------------------------------------------------------------------- */

/* Buttons — neon-outlined against the dark background, near-white text    */

/* (docs/visual-design.md's "interactive elements" role). Declared before   */

/* the Star Map's more specific button rules below, so cascade order       */

/* matches specificity order.                                              */

/* ---------------------------------------------------------------------- */

button {
  font-family: inherit;
  font-size: 1rem;
  min-height: 24px;
  min-width: 24px;
  padding: 0.4em 0.8em;
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
  border-radius: 4px;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    opacity var(--transition-fast),
    box-shadow var(--transition-fast);
}

/* An inline text link that happens to need JS (scrolling/focusing a spot
   inside a dialog that might not be open yet — a plain <a href="#..."> can't
   do both), so it's a real <button> styled to read as a link. Exempt from
   the 24x24 minimum target size (R13) the same way WCAG 2.5.8 exempts
   inline links within a sentence. */
.link-button {
  background: none;
  border: none;
  padding: 0;
  min-width: 0;
  min-height: 0;
  color: var(--color-economy);
  text-decoration: underline;
  cursor: pointer;
  font: inherit;
}

.dialog-choice-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.dialog-choice-list button {
  width: 100%;
  text-align: left;
}

button[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

button:hover:not([aria-disabled="true"], :disabled) {
  background: var(--color-panel-border);

  /* Static (non-animated) glow, driven by the existing box-shadow
     transition already covered by --transition-fast's reduced-motion
     override above — no separate keyframe/media-query needed here. */
  box-shadow: 0 0 6px var(--color-text);
}

/* ---------------------------------------------------------------------- */

/* Star Map                                                                */

/* ---------------------------------------------------------------------- */

/* Only this wrapper scrolls horizontally, not the page (WCAG 1.4.10) — see
   the comment on .star-map-scroll in index.html for why the table itself
   can't just shrink to fit a phone-width viewport. */
.star-map-scroll {
  overflow-x: auto;
}

#star-map table {
  border-collapse: collapse;
  width: 100%;

  /* Still stretches to fill its container on wide viewports (unchanged
     from before), but won't compress cells below their natural 24px
     min-width (R13) when the container is narrower than that — instead
     the table overflows .star-map-scroll, which is what makes that
     wrapper's horizontal scroll kick in on phone widths. */
  min-width: max-content;
}

#star-map caption {
  text-align: left;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

#star-map th,
#star-map td {
  border: 1px solid var(--color-panel-border);
  text-align: center;
  padding: 0;
  min-width: 24px;
  min-height: 24px;
  width: 24px;
  height: 24px;
  font-size: 0.75rem;

  /* Containing block for .just-revealed's ::after sweep pseudo-element
     below — needs to be on the <td> (block-level), not the inline
     .sector-star span itself. overflow: hidden clips the sweep band to
     this cell's own bounds; without it, the band's translateY animation
     visibly bleeds into the cell above/below during the sweep. */
  position: relative;
  overflow: hidden;
}

#star-map td button {
  width: 100%;
  height: 100%;
  min-width: 24px;
  min-height: 24px;
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-text);
  cursor: pointer;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

/* "Something goes here" glyph for a placeable-but-not-yet-placed cell —
   pure CSS generated content, so it needs no HTML/JS of its own. Safe
   accessibility-wise: CSS ::before content is never exposed to the
   accessibility tree, and the button already has an explicit
   aria-label ("Place Sector X"), so this can't create a duplicate or
   conflicting announcement. */
#star-map td button::before {
  content: "?";
  color: var(--color-text);
  opacity: 0.6;
  font-weight: bold;
}

#star-map td button:hover {
  background: var(--color-panel-border);

  /* Box-shadow glow itself comes from the general button:hover rule above
     (this selector doesn't redeclare it) — this override only needs to
     restore the transition property that :hover would otherwise lose,
     since `transition` is a single shorthand and the more specific
     selector above replaces rather than merges it. */
}

.sector-star {
  /* Decorative only — never the sole indicator of state (see the visually
     hidden text alongside it in each cell). */
  font-style: normal;
  text-shadow: 0 0 3px currentcolor;
}

.sector-star.just-revealed {
  animation: tile-materialize 550ms ease-out;
}

/* The sweep band itself. js/ui/render.js puts this same class on the <td>
   (not just the inner .sector-star span) specifically so this can target
   it directly here, positioned relative to `position: relative` on
   #star-map td above — an absolutely positioned pseudo-element can't
   cleanly hang off the inline .sector-star span itself. */
#star-map td.just-revealed::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent, var(--color-economy) 45%, transparent 90%);
  opacity: 0;
  pointer-events: none;
  animation: tile-beam-sweep 450ms ease-out;
}

@media (prefers-reduced-motion: reduce) {
  .sector-star.just-revealed {
    animation: none;
  }

  #star-map td.just-revealed::after {
    animation: none;
  }
}

.sector-star[aria-hidden="true"] {
  display: inline-block;
}

.tier-economy {
  color: var(--color-economy);
}

.tier-standard {
  color: var(--color-standard);
}

.tier-luxury {
  color: var(--color-luxury);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------------------------------------------------------------------- */

/* Your Ship / Market lists                                                */

/* ---------------------------------------------------------------------- */

.hand-list,
.shares-list,
.corporation-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.market-scroll {
  overflow-x: auto;
}

.corporation-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  border-bottom: 1px solid var(--color-panel-border);
  padding-bottom: 0.5rem;
}

.credits-display {
  font-size: 1.1rem;
  font-weight: bold;
}

/* ---------------------------------------------------------------------- */

/* Event log                                                               */

/* ---------------------------------------------------------------------- */

#event-log ul {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 12rem;
  overflow-y: auto;
}

#event-log li {
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--color-panel-border);
}

/* ---------------------------------------------------------------------- */

/* Dialog                                                                  */

/* ---------------------------------------------------------------------- */

dialog {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-text);
  border-radius: 4px;
  padding: 1.5rem;
  max-width: 30rem;
}

dialog::backdrop {
  background: rgb(0 0 0 / 60%);
}

dialog .dialog-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1rem;
}

.disposition-inputs {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.disposition-inputs label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.disposition-inputs input,
.setup-field input,
.setup-field select,
.setup-ai-row input,
.setup-ai-row select {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-text);
  border-radius: 4px;
  padding: 0.25rem;
  font: inherit;
}

.disposition-inputs input {
  width: 4rem;
}

.setup-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1rem;
}

.setup-ai-row {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 0.75rem;
}

.setup-ai-row label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}