/* ==========================================================================
   THREE CHANCES — RETRO COMPUTER TERMINAL & ARCADE STYLING
   Target: threechances.pages.dev
   STRICT RULE: SOLID COLORS ONLY. NO GRADIENTS ANYWHERE.
   ========================================================================== */

:root {
  /* Solid Color Palette */
  --bg-dark: #121820;
  --panel-dark: #1D2630;
  --panel-dark-sub: #161E27;
  --panel-border: #2B3746;
  --panel-border-bold: #3C4D61;

  --cream: #F3EEE5;
  --amber: #E7A94B;
  --amber-dark: #C68E3A;
  --blue: #6E8FA8;
  --blue-dark: #557287;
  --red: #B85C5C;
  --red-dark: #964848;
  --grey: #8B949E;
  --text-main: #EDE8DF;
  --black: #0B0F14;

  /* Typography */
  --font-pixel: 'Press Start 2P', monospace;
  --font-console: 'Space Mono', monospace;
  --font-reading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* CSS Reset & Defaults */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-console);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
}

/* Screen reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Viewport Shell: Natural Document Flow (No 100vh lock) */
.arcade-viewport {
  min-height: 100vh;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px 16px;
}

.arcade-frame {
  width: 100%;
  max-width: 540px;
  margin: 0 auto;
}

/* Screen Views Management */
.screen-view {
  display: none;
  width: 100%;
}

.screen-view.active {
  display: block;
}

/* Main Arcade Card / Terminal Chassis */
.arcade-card {
  background-color: var(--panel-dark);
  border: 2px solid var(--panel-border-bold);
  border-radius: 2px;
  padding: 24px 20px;
  position: relative;
  box-shadow: 4px 4px 0 var(--black);
}

@media (min-width: 480px) {
  .arcade-card {
    padding: 32px 28px;
  }
}

/* Terminal Bar (Retro header line) */
.terminal-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--panel-border);
  font-size: 0.75rem;
  letter-spacing: 1px;
  color: var(--grey);
}

.terminal-sys {
  color: var(--cream);
  font-weight: 700;
}

.terminal-tag {
  color: var(--amber);
}

/* Buttons (No emoji, no decorative symbols, square edges, min 44px height) */
.arcade-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: 48px;
  padding: 12px 20px;
  font-family: var(--font-console);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color 0.1s ease, border-color 0.1s ease, color 0.1s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--cream);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--amber);
  color: var(--black);
  border-color: var(--amber);
  box-shadow: 2px 2px 0 var(--black);
}

.btn-primary:hover {
  background-color: var(--cream);
  border-color: var(--cream);
  color: var(--black);
}

.btn-primary:active {
  background-color: var(--amber-dark);
  border-color: var(--amber-dark);
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--black);
}

.btn-secondary {
  background-color: var(--panel-dark-sub);
  color: var(--cream);
  border-color: var(--panel-border-bold);
  box-shadow: 2px 2px 0 var(--black);
}

.btn-secondary:hover {
  background-color: var(--panel-border);
  border-color: var(--grey);
  color: var(--cream);
}

.btn-secondary:active {
  background-color: var(--bg-dark);
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--black);
}

/* ==============================================
   SCREEN 1: BOOT SCREEN STYLES
   ============================================== */
.boot-card {
  text-align: left;
}

.terminal-body {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 20px 16px;
  margin-bottom: 20px;
}

.boot-line {
  font-family: var(--font-console);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--text-main);
  letter-spacing: 1px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.boot-line.revealed {
  opacity: 1;
  transform: translateY(0);
}

.boot-line.b-1 {
  color: var(--amber);
  font-weight: 700;
}

.boot-line.b-3, .boot-line.b-5, .boot-line.b-7 {
  color: var(--grey);
}

.boot-line.highlight-player {
  color: var(--amber);
  font-weight: 700;
}

.boot-line.highlight-ready {
  color: var(--cream);
  font-weight: 700;
}

.boot-line.highlight-locked {
  color: var(--red);
  font-weight: 700;
}

.boot-actions #btn-insert-coin {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.boot-actions #btn-insert-coin.revealed {
  opacity: 1;
  pointer-events: auto;
}

.boot-footer {
  margin-top: 20px;
  text-align: center;
  border-top: 1px solid var(--panel-border);
  padding-top: 14px;
}

.sub-credit {
  font-size: 0.75rem;
  color: var(--grey);
  letter-spacing: 1px;
}

/* ==============================================
   SCREEN 2: START SCREEN STYLES
   ============================================== */
.arcade-card-header {
  text-align: center;
  margin-bottom: 20px;
}

.header-badge {
  display: inline-block;
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  color: var(--amber);
  font-size: 0.6875rem;
  letter-spacing: 2px;
  padding: 4px 10px;
  margin-bottom: 12px;
  font-weight: 700;
}

.pixel-title {
  font-family: var(--font-pixel);
  font-size: 1.25rem;
  line-height: 1.4;
  color: var(--cream);
  letter-spacing: 1px;
  margin-bottom: 10px;
}

.pixel-title.amber {
  color: var(--amber);
}

.pixel-title.big-title {
  font-size: 1.25rem;
  line-height: 1.6;
}

@media (min-width: 480px) {
  .pixel-title {
    font-size: 1.4375rem;
  }
  .pixel-title.big-title {
    font-size: 1.5rem;
  }
}

.pixel-subtitle {
  font-size: 0.8125rem;
  color: var(--grey);
  letter-spacing: 1px;
}

.player-identity-strip {
  display: flex;
  justify-content: space-between;
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 0.8125rem;
}

.identity-lbl {
  color: var(--grey);
  margin-right: 8px;
}

.identity-val {
  color: var(--cream);
  font-weight: 700;
}

.briefing-box {
  background-color: var(--panel-dark-sub);
  border-left: 3px solid var(--amber);
  padding: 14px 16px;
  margin-bottom: 16px;
}

.briefing-line {
  font-size: 0.875rem;
  color: var(--cream);
  line-height: 1.6;
  letter-spacing: 0.5px;
}

.status-summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 16px;
}

.stat-cell {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 12px 10px;
  text-align: center;
}

.stat-cell-wide {
  grid-column: span 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
}

.stat-label {
  display: block;
  font-size: 0.6875rem;
  color: var(--grey);
  letter-spacing: 1.5px;
  margin-bottom: 4px;
}

.stat-cell-wide .stat-label {
  margin-bottom: 0;
}

.stat-number {
  font-family: var(--font-pixel);
  font-size: 1.125rem;
  color: var(--amber);
}

.stat-status-badge {
  font-family: var(--font-console);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 4px 8px;
  border: 1px solid currentColor;
}

.stat-status-badge.locked {
  color: var(--red);
  border-color: var(--red);
}

.stat-status-badge.unlocked {
  color: var(--amber);
  border-color: var(--amber);
}

.start-instruction {
  font-size: 0.8125rem;
  color: var(--grey);
  text-align: center;
  line-height: 1.5;
  margin-bottom: 8px;
}

/* ==============================================
   SCREEN 3: TIC TAC TOE GAME STYLES
   ============================================== */
.game-hud {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 12px;
  margin-bottom: 16px;
}

@media (min-width: 440px) {
  .game-hud {
    grid-template-columns: repeat(4, 1fr);
  }
  .hud-status {
    grid-column: span 4;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--panel-border);
    padding-top: 8px;
    margin-top: 4px;
  }
}

.hud-item {
  text-align: center;
}

.hud-label {
  display: block;
  font-size: 0.625rem;
  letter-spacing: 1.5px;
  color: var(--grey);
  margin-bottom: 2px;
}

.hud-val {
  font-family: var(--font-console);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--cream);
}

.hud-val.marker-x {
  color: var(--amber);
  font-family: var(--font-pixel);
  font-size: 1rem;
}

.hud-val.marker-o {
  color: var(--blue);
  font-family: var(--font-pixel);
  font-size: 1rem;
}

.hud-val.status-tag {
  font-size: 0.75rem;
  letter-spacing: 1px;
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid currentColor;
}

.hud-val.status-tag.locked {
  color: var(--red);
}

.hud-val.status-tag.unlocked {
  color: var(--amber);
}

/* Turn Indicator Banner */
.turn-indicator {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  color: var(--cream);
  font-family: var(--font-console);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-align: center;
  padding: 10px 14px;
  margin-bottom: 16px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.turn-indicator.turn-player {
  color: var(--amber);
  border-color: var(--amber);
}

.turn-indicator.turn-cpu {
  color: var(--blue);
  border-color: var(--blue);
}

/* 3x3 Tic Tac Toe Grid */
.board-container {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.board-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 320px;
}

@media (min-width: 400px) {
  .board-grid {
    gap: 10px;
    max-width: 340px;
  }
}

.ttt-cell {
  aspect-ratio: 1 / 1;
  width: 100%;
  min-height: 72px;
  background-color: var(--panel-dark-sub);
  border: 2px solid var(--panel-border);
  border-radius: 2px;
  color: var(--text-main);
  font-family: var(--font-pixel);
  font-size: 1.75rem;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.1s ease, border-color 0.1s ease;
  box-shadow: 2px 2px 0 var(--black);
}

.ttt-cell:hover:not(:disabled) {
  border-color: var(--amber);
  background-color: var(--panel-dark);
}

.ttt-cell:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.ttt-cell:disabled {
  cursor: default;
}

.ttt-cell.val-x {
  color: var(--amber);
  border-color: var(--amber-dark);
}

.ttt-cell.val-o {
  color: var(--blue);
  border-color: var(--blue-dark);
}

/* Winning line highlights (SOLID, NO GLOW) */
.ttt-cell.win-cell-player {
  background-color: var(--amber);
  color: var(--black);
  border-color: var(--cream);
  box-shadow: 2px 2px 0 var(--black);
}

.ttt-cell.win-cell-cpu {
  background-color: var(--red);
  color: var(--cream);
  border-color: var(--cream);
  box-shadow: 2px 2px 0 var(--black);
}

/* Round Outcome Panel */
.round-outcome-panel {
  background-color: var(--panel-dark-sub);
  border: 2px solid var(--panel-border-bold);
  padding: 16px;
  margin-bottom: 16px;
  text-align: center;
}

.round-outcome-panel.hidden {
  display: none;
}

.outcome-title {
  font-family: var(--font-pixel);
  font-size: 1.125rem;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.outcome-title.win {
  color: var(--amber);
}

.outcome-title.draw {
  color: var(--grey);
}

.outcome-title.loss {
  color: var(--red);
}

.outcome-desc {
  font-size: 0.875rem;
  color: var(--cream);
  margin-bottom: 16px;
  line-height: 1.5;
}

.outcome-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Out of Chances Panel */
.out-of-chances-panel {
  background-color: var(--panel-dark-sub);
  border: 2px solid var(--red);
  padding: 20px 16px;
  margin-bottom: 16px;
  text-align: center;
}

.out-of-chances-panel.hidden {
  display: none;
}

.ooc-title {
  font-family: var(--font-pixel);
  font-size: 1rem;
  color: var(--red);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.ooc-text {
  font-size: 0.875rem;
  color: var(--cream);
  line-height: 1.6;
}

.ooc-subtext {
  font-size: 0.75rem;
  color: var(--grey);
  margin-top: 12px;
  line-height: 1.4;
}

/* ==============================================
   SCREEN 4: VICTORY SCREEN STYLES
   ============================================== */
.victory-card {
  text-align: center;
}

.terminal-box {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 16px;
  margin-bottom: 20px;
  text-align: left;
}

.term-status-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.8125rem;
  font-weight: 700;
}

.term-lbl {
  color: var(--grey);
  letter-spacing: 1.5px;
}

.term-val.green {
  color: var(--amber);
  letter-spacing: 1px;
}

.term-flavor {
  font-size: 0.875rem;
  color: var(--cream);
  line-height: 1.5;
}

.victory-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.vstat-item {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 12px 10px;
  text-align: center;
}

.vstat-label {
  display: block;
  font-size: 0.6875rem;
  color: var(--grey);
  letter-spacing: 1.5px;
  margin-bottom: 6px;
}

.vstat-val {
  font-family: var(--font-pixel);
  font-size: 1.125rem;
  color: var(--amber);
}

/* ==============================================
   SCREEN 4.5: TRANSMISSION DECODE TRANSITION
   ============================================== */
.transmission-console {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 24px 18px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.tx-line {
  font-family: var(--font-console);
  font-size: 0.9375rem;
  color: var(--grey);
  letter-spacing: 1.5px;
  line-height: 2;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.tx-line.revealed {
  opacity: 1;
}

.tx-line.highlight-tx {
  color: var(--amber);
  font-weight: 700;
  font-size: 1rem;
}

/* ==============================================
   SCREEN 5: BIRTHDAY LETTER (CALMER READING LAYOUT)
   ============================================== */
.letter-card {
  max-width: 580px;
  margin: 0 auto;
}

.letter-top-meta {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 14px 16px;
  margin-bottom: 24px;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  line-height: 1.8;
  letter-spacing: 1.5px;
}

.meta-row .lbl {
  color: var(--grey);
}

.meta-row .val {
  color: var(--cream);
  font-weight: 700;
}

/* Letter content: comfortable line-height, readable text, natural scrolling */
.letter-content {
  font-family: var(--font-reading);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-main);
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 24px 20px;
}

@media (min-width: 480px) {
  .letter-content {
    font-size: 1rem;
    padding: 30px 26px;
    line-height: 1.75;
  }
}

.letter-content p {
  margin-bottom: 18px;
  letter-spacing: 0.2px;
}

.letter-content p:last-child {
  margin-bottom: 0;
}

.letter-signoff {
  font-weight: 700;
  color: var(--amber);
  margin-top: 24px;
}

/* ==============================================
   SCREEN 6: FINAL SCREEN
   ============================================== */
.final-card {
  text-align: center;
}

.final-body {
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 24px 18px;
  margin-bottom: 20px;
}

.final-text {
  font-size: 0.9375rem;
  color: var(--cream);
  line-height: 1.6;
  margin-bottom: 12px;
}

.final-text:last-child {
  margin-bottom: 0;
}

.final-footer-meta {
  display: flex;
  justify-content: space-between;
  background-color: var(--panel-dark-sub);
  border: 1px solid var(--panel-border);
  padding: 12px 16px;
  margin-bottom: 8px;
  font-size: 0.75rem;
}

.fmeta-lbl {
  color: var(--grey);
  letter-spacing: 1.5px;
}

.fmeta-val {
  color: var(--amber);
  font-weight: 700;
  letter-spacing: 1px;
}

/* ==============================================
   PREFERS REDUCED MOTION
   ============================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .boot-line, .tx-line {
    opacity: 1 !important;
    transform: none !important;
  }
}