/* ==========================================================================
   main-game.css
   Korean Vocabulary PWA — Main Game Screen (Arcade CRT Aesthetic)
   Strictly scoped to #screen-main-game. All colors via design tokens only.
   NO raw hex, RGB, or HSL values anywhere.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Screen Root — Full viewport game container (no scroll, hard edges)
   -------------------------------------------------------------------------- */
#screen-main-game {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--color-background);
  font-family: var(--font-body);
  color: var(--color-text);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* --------------------------------------------------------------------------
   HUD Bar — Fixed top bar with clear visual regions (56px)
   -------------------------------------------------------------------------- */
#screen-main-game #game-hud {
  height: 56px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-sm);
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-primary) 25%, transparent);
  z-index: 100;
  gap: var(--space-xs);
}

/* HUD subsections */
#screen-main-game .hud-left,
#screen-main-game .hud-center,
#screen-main-game .hud-right {
  display: flex;
  align-items: center;
}

#screen-main-game .hud-left {
  gap: var(--space-xs);
  flex: 1 1 auto;
}

#screen-main-game .hud-center {
  justify-content: center;
  flex: 0 0 auto;
}

#screen-main-game .hud-right {
  gap: var(--space-sm);
  flex: 1 1 auto;
  justify-content: flex-end;
}

/* Pause button — icon style, arcade border */
#screen-main-game #pause-btn {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  line-height: 1;
  color: var(--color-text);
  background-color: transparent;
  border: 2px solid var(--color-text-muted);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: transform var(--transition-speed), 
              border-color var(--transition-speed),
              color var(--transition-speed),
              box-shadow var(--transition-speed);
}

#screen-main-game #pause-btn:active {
  transform: scale(0.92);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
}

/* Phase badge — changes color on phase transition */
#screen-main-game .hud-phase-badge {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  padding: 3px 6px;
  border: 2px solid var(--color-secondary);
  border-radius: var(--border-radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: background-color var(--transition-speed),
              color var(--transition-speed),
              border-color var(--transition-speed);
}

/* Phase-specific colors (Decoding = cyan/secondary, Recognition = hot pink/primary, Blitz = yellow/accent) */
#screen-main-game .hud-phase-badge.phase-decoding {
  background-color: var(--color-secondary);
  color: var(--color-background);
  border-color: var(--color-secondary);
}

#screen-main-game .hud-phase-badge.phase-recognition {
  background-color: var(--color-primary);
  color: var(--color-background);
  border-color: var(--color-primary);
}

#screen-main-game .hud-phase-badge.phase-blitz {
  background-color: var(--color-accent);
  color: var(--color-background);
  border-color: var(--color-accent);
}

/* Timer display */
#screen-main-game #hud-timer {
  font-family: var(--font-display);
  font-size: 18px;
  font-variant-numeric: tabular-nums;
  min-width: 64px;
  text-align: center;
  letter-spacing: 0.04em;
}

/* Urgent timer (under 60s) — pulses red */
#screen-main-game #hud-timer.urgent {
  color: var(--color-incorrect);
  animation: hud-timer-pulse 1s ease-in-out infinite;
}

@keyframes hud-timer-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

/* Streak groups — right side HUD */
#screen-main-game .hud-streak-group {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.05;
  gap: 1px;
}

#screen-main-game .hud-label {
  font-family: var(--font-display);
  font-size: 7px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1;
}

#screen-main-game .hud-value {
  font-family: var(--font-display);
  font-size: var(--font-size-md);
  color: var(--color-accent);
  text-shadow: 0 0 5px var(--color-accent);
  line-height: 1;
}

/* --------------------------------------------------------------------------
   Game Field — The "canvas" area (flex:1, grid of 4 equal lanes)
   -------------------------------------------------------------------------- */
#screen-main-game #game-field {
  flex: 1 1 auto;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: row;
  background: linear-gradient(
    to bottom,
    var(--color-background) 0%,
    color-mix(in srgb, var(--color-background) 55%, var(--color-surface)) 100%
  );
  z-index: 1;
}
/* --------------------------------------------------------------------------
   Lanes — 4 equal-width vertical tracks, full height
   Dividers: 1px solid at 40% opacity of muted text color
   -------------------------------------------------------------------------- */
#screen-main-game .lane {
  flex: 1;
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  border-right: 1px solid color-mix(in srgb, var(--color-text-muted) 40%, transparent);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.1s ease;
  z-index: 2;
}

#screen-main-game .lane:last-child {
  border-right: none;
}

/* Tap flash feedback (regardless of correct/incorrect) */
#screen-main-game .lane.tapped {
  background-color: color-mix(in srgb, var(--color-primary) 42%, var(--color-background));
}
#screen-main-game .lane.correct {
  background-color: var(--color-correct) !important;
  transition: background-color 0ms;
}

#screen-main-game .lane.incorrect {
  background-color: var(--color-incorrect) !important;
  transition: background-color 0ms;
}
/* --------------------------------------------------------------------------
   Active Falling Block — #active-block
   Exact contract: flat surface fill, 2px neon secondary border,
   outward glow, giant Korean text (48px, 900 weight)
   -------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------
   Active Falling Block — #active-block
   Two-region layout:
     1. .block-korean  — centered hero area (flex:1, centered)
     2. .block-choices — 4-col grid pinned to block bottom, lane-aligned
   -------------------------------------------------------------------------- */
#screen-main-game #active-block {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;          /* spans all 4 lanes — full game-field width */
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border-top: 2px solid var(--color-secondary);
  border-bottom: 2px solid var(--color-secondary);
  border-left: none;
  border-right: none;
  box-shadow: 0 0 10px var(--color-secondary);
  z-index: 30;
  pointer-events: none;
  box-sizing: border-box;
  will-change: transform;
  overflow: visible;
  grid-column: 1 / -1;
}

/* ── Korean word — centred hero region ──────────────────────────────────── */
#screen-main-game .block-target {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 12px;
  font-family: var(--font-korean);
  font-weight: 900;
  font-size: 46px;
  line-height: 1.15;
  color: var(--color-text);
  text-align: center;
  text-shadow: 0 0 8px var(--color-secondary);
  white-space: normal;
  word-break: keep-all;
  overflow: visible;
}
/* ============================================================
   TARGET WORD — Language-aware font sizing (future-proof)
   Base rule above stays 100% untouched.
   Only font-family, font-size, font-weight, letter-spacing,
   direction, and text-align are overridden per language.
   ============================================================ */

/* Korean (Hangul) — large, bold, dense script */
#screen-main-game #active-block .block-target[data-lang="ko"] {
  font-family: var(--font-korean);
  font-weight: 900;
  font-size: 46px;
  line-height: 1.15;
}

/* Latin script (English, German, etc.) — smaller to prevent overflow */
#screen-main-game #active-block .block-target[data-lang="en"] {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

/* Cyrillic (Russian, etc.) — same treatment as Latin for now */
#screen-main-game #active-block .block-target[data-lang="ru"] {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 24px;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

/* Arabic script (Farsi, Arabic) — RTL + slightly larger */
#screen-main-game #active-block .block-target[data-lang="ar"] {
  font-family: var(--font-display); /* placeholder until we add proper Arabic font */
  font-size: 32px;
  direction: rtl;
  text-align: right;
  line-height: 1.25;
}

/* ── English choices — 4-col grid, lane-aligned ─────────────────────────── */
#screen-main-game .block-choices {
  display: grid;
  grid-template-columns: repeat(4, 1fr);  /* mirrors #game-field lane grid */
  border-top: 1px solid color-mix(in srgb, var(--color-secondary) 40%, transparent);
}

#screen-main-game .block-choice {
  flex: 1;
  padding: 10px 6px;
  font-family: var(--font-korean);
  font-size: 14px;         
  color: var(--color-secondary);
  text-align: center;
  line-height: 1.4;
  white-space: normal;
  word-break: keep-all;
  border-right: 1px solid color-mix(in srgb, var(--color-text-muted) 40%, transparent);
}

#screen-main-game .block-choice:last-child {
  border-right: none;
}

/* ============================================================
   BLOCK CHOICES — Language-aware font handling (future-proof)
   Base .block-choice rule above stays untouched.
   Only font-family, font-size, font-weight, line-height,
   direction, and text-align are overridden.
   ============================================================ */

/* Korean - answe choices */
#screen-main-game .block-choice[data-lang="ko"] {
  font-family: var(--font-korean);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.25;
  padding: 2px 1px;
  
}

/* English / German / Latin script — answer choices */
#screen-main-game .block-choice[data-lang="en"] {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 8px;                 /* Reduced from 13px for mobile */
  line-height: 1.25;
  word-break: break-word;
  overflow-wrap: break-word;
  min-width: 0;                    /* Critical: prevents grid column from expanding */
  text-align: center;
  padding: 2px 1px;
  word-spacing: 0.75;
}

/* Russian / Cyrillic */
#screen-main-game .block-choice[data-lang="ru"] {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.3;
}

/* Arabic script (Farsi, Arabic) — RTL support */
#screen-main-game .block-choice[data-lang="ar"] {
  font-family: var(--font-display);
  font-size: 14px;
  direction: rtl;
  text-align: right;
  line-height: 1.35;
}
/* =====================================================
   DESKTOP STYLES — All Answer Choice Languages
   Applies on tablets and larger screens (≥768px)
   ===================================================== */

@media (min-width: 768px) {

  /* Korean */
  #screen-main-game .block-choice[data-lang="ko"] {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.2;
    padding: 10px 8px;
  }

  /* English */
  #screen-main-game .block-choice[data-lang="en"] {
    font-size: 15px;
    font-weight: 400;
    line-height: 1.3;
    padding: 10px 8px;
    word-spacing: normal;
    letter-spacing: normal;
  }

  /* Russian / Cyrillic */
  #screen-main-game .block-choice[data-lang="ru"] {
    font-size: 15px;
    font-weight: 400;
    line-height: 1.3;
    padding: 10px 8px;
    word-spacing: normal;
    letter-spacing: normal;
  }

  /* Arabic */
  #screen-main-game .block-choice[data-lang="ar"] {
    font-size: 16px;
    line-height: 1.35;
    padding: 10px 8px;
    direction: rtl;
    text-align: right;
  }

}
/* ==========================================================================
   End of main-game.css — All rules respect arcade hard-edge + neon-glow
   contract and use ONLY CSS variable tokens for color.
   ========================================================================== */