* { box-sizing: border-box; margin: 0; padding: 0; }

  :root {
    --bg: #05060a;
    --panel: rgba(8, 11, 18, 0.86);
    --panel-border: rgba(255,255,255,0.10);
    --soft: #97a3b7;
    --text: #f4f7fb;
    --gold: #f5c451;
    --violet: #b892ff;
    --green: #48d597;
    --red: #ff6d6d;
    --inferno: #ff8b61;
    --cryo: #7ed9ff;
    --sniper: #ffd36d;
    --barrage: #9bb3ff;
    --overload: #97f0d1;
  }

  body {
    background: radial-gradient(circle at center, #11182a 0%, #070a13 38%, #04060c 100%);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
  }

  #game-canvas {
    display: block;
    width: 100vw;
    height: 100vh;
    cursor: crosshair;
  }

  #hud {
    position: fixed;
    inset: 0 0 auto 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 18px;
    z-index: 10;
    pointer-events: none;
  }

  .hud-block {
    min-width: 160px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid var(--panel-border);
    background: linear-gradient(180deg, rgba(18,24,38,0.9), rgba(8,11,18,0.82));
    backdrop-filter: blur(8px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.22);
  }

  .hud-block.health-block {
    min-width: 220px;
  }

  .hud-block.center {
    text-align: center;
    min-width: 190px;
  }

  .hud-label {
    font-size: 10px;
    letter-spacing: 1.6px;
    text-transform: uppercase;
    color: var(--soft);
    margin-bottom: 5px;
  }

  .hud-value {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
  }

  .small-line {
    font-size: 12px;
    color: #cbd3e1;
    margin-top: 4px;
  }

  .bar-outer {
    width: 210px;
    max-width: 100%;
    height: 11px;
    background: rgba(255,255,255,0.08);
    border-radius: 999px;
    overflow: hidden;
    margin-top: 7px;
    border: 1px solid rgba(255,255,255,0.04);
  }

  .bar-inner {
    height: 100%;
    width: 0;
    transition: none;
  }

  #hp-bar { background: linear-gradient(90deg, #40d18e, #ffd166); }
  #barrier-bar { background: linear-gradient(90deg, #78a9ff, #c99dff); }
  #xp-bar { background: linear-gradient(90deg, #8c5bff, #d88cff); }

  #reload-text {
    color: var(--red);
    font-size: 11px;
    min-height: 14px;
  }

  .overlay {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px;
    background: rgba(4, 6, 10, 0.82);
    backdrop-filter: blur(8px);
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    text-align: center;
  }

  .overlay.active {
    opacity: 1;
    pointer-events: all;
  }

  .overlay h1,
  .overlay h2 {
    font-weight: 900;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
  }

  .overlay h1 { font-size: 44px; }
  .overlay h2 { font-size: 28px; }

  .subtitle {
    color: #c9d3e4;
    max-width: 820px;
    line-height: 1.5;
    margin-bottom: 22px;
    font-size: 14px;
  }

  .instruction-box {
    margin: 8px 0 22px;
    padding: 14px 18px;
    max-width: 720px;
    border-radius: 14px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    color: #d7deec;
    line-height: 1.6;
    font-size: 14px;
  }

  .btn {
    border: 2px solid var(--gold);
    background: transparent;
    color: var(--gold);
    border-radius: 999px;
    padding: 12px 30px;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.4px;
    cursor: pointer;
    transition: 0.18s ease;
  }

  .btn:hover {
    background: var(--gold);
    color: #111;
    transform: translateY(-1px);
  }

  .btn.secondary {
    margin-top: 14px;
    border-color: rgba(255,255,255,0.18);
    color: #d9e1f0;
  }

  .btn.secondary:hover {
    background: rgba(255,255,255,0.12);
    color: #fff;
  }

  .upgrade-cards {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 12px;
  }

  .upgrade-card {
    width: 214px;
    padding: 18px 18px 16px;
    border-radius: 16px;
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.12);
    text-align: left;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease;
  }

  .upgrade-card:hover {
    transform: translateY(-5px);
    border-color: var(--gold);
    background: rgba(245,196,81,0.10);
  }

  .upgrade-card.tier-1 { border-color: rgba(255,255,255,0.13); }
  .upgrade-card.tier-2 { border-color: rgba(120,169,255,0.40); box-shadow: 0 0 18px rgba(120,169,255,0.12); }
  .upgrade-card.tier-3 { border-color: rgba(200,157,255,0.55); box-shadow: 0 0 18px rgba(200,157,255,0.18); }
  .upgrade-card.special {
    position: relative;
    overflow: hidden;
    border-width: 2px;
    box-shadow: 0 0 24px rgba(255,255,255,0.12);
  }
  .upgrade-card.special::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.18;
    pointer-events: none;
  }
  .upgrade-card.special:hover {
    background: rgba(255,255,255,0.10);
  }
  .upgrade-card.path-inferno {
    border-color: rgba(255,139,97,0.75);
    background: rgba(255,139,97,0.08);
  }
  .upgrade-card.path-inferno::before {
    background: radial-gradient(circle at top right, rgba(255,139,97,0.62), transparent 58%);
  }
  .upgrade-card.path-cryo {
    border-color: rgba(126,217,255,0.78);
    background: rgba(126,217,255,0.08);
  }
  .upgrade-card.path-cryo::before {
    background: radial-gradient(circle at top right, rgba(126,217,255,0.62), transparent 58%);
  }
  .upgrade-card.path-sniper {
    border-color: rgba(255,211,109,0.78);
    background: rgba(255,211,109,0.08);
  }
  .upgrade-card.path-sniper::before {
    background: radial-gradient(circle at top right, rgba(255,211,109,0.62), transparent 58%);
  }
  .upgrade-card.path-barrage {
    border-color: rgba(155,179,255,0.78);
    background: rgba(155,179,255,0.08);
  }
  .upgrade-card.path-barrage::before {
    background: radial-gradient(circle at top right, rgba(155,179,255,0.62), transparent 58%);
  }
  .upgrade-card.path-overload {
    border-color: rgba(151,240,209,0.78);
    background: rgba(151,240,209,0.08);
  }
  .upgrade-card.path-overload::before {
    background: radial-gradient(circle at top right, rgba(151,240,209,0.62), transparent 58%);
  }

  .upgrade-stars {
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: 10px;
  }

  .upgrade-icon {
    font-size: 34px;
    line-height: 1;
    margin-bottom: 12px;
  }

  .upgrade-name {
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 6px;
  }

  .upgrade-desc {
    font-size: 12px;
    color: #d0d8e6;
    line-height: 1.45;
  }

  .upgrade-meta {
    margin-top: 10px;
    color: #92a2bc;
    font-size: 11px;
  }

  .special-labels {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
  }

  .special-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(0,0,0,0.18);
    color: #fff;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 1.1px;
    text-transform: uppercase;
  }

  .special-label.type-core {
    color: #111;
    background: rgba(255,255,255,0.88);
    border-color: transparent;
  }

  .special-label.type-mastery {
    color: #111;
    background: linear-gradient(90deg, #ffd36d, #fff2b5);
    border-color: transparent;
  }

  .upgrade-fit {
    margin-top: 10px;
    color: #bac8df;
    font-size: 11px;
    line-height: 1.4;
  }

  .milestone-banner {
    margin-bottom: 10px;
    color: #dcb5ff;
    font-weight: 800;
    letter-spacing: 1px;
    font-size: 12px;
    text-transform: uppercase;
  }

  #panel-toggle,
  #stats-toggle {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 51;
    width: 34px;
    height: 88px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--panel-border);
    background: rgba(8,11,18,0.92);
    color: var(--gold);
    cursor: pointer;
    font-size: 19px;
    transition: 0.25s ease;
    backdrop-filter: blur(8px);
  }

  #panel-toggle {
    left: 0;
    border-left: none;
    border-radius: 0 12px 12px 0;
  }

  #stats-toggle {
    right: 0;
    border-right: none;
    border-radius: 12px 0 0 12px;
  }

  #panel-toggle.shifted { left: 280px; }
  #stats-toggle.shifted { right: 280px; }

  #upgrade-panel,
  #stats-panel {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 280px;
    padding: 16px 14px 20px;
    background: linear-gradient(180deg, rgba(10,14,23,0.97), rgba(7,10,16,0.94));
    border-color: var(--panel-border);
    border-style: solid;
    z-index: 50;
    transition: 0.25s ease;
    overflow-y: auto;
    backdrop-filter: blur(10px);
  }

  #upgrade-panel {
    left: -280px;
    border-width: 0 1px 0 0;
  }

  #stats-panel {
    right: -280px;
    border-width: 0 0 0 1px;
  }

  #upgrade-panel.open { left: 0; }
  #stats-panel.open { right: 0; }

  .side-title {
    font-size: 14px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1.3px;
    color: var(--gold);
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .panel-item {
    display: flex;
    gap: 12px;
    padding: 10px 6px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }

  .pi-icon {
    width: 32px;
    text-align: center;
    font-size: 22px;
    flex-shrink: 0;
  }

  .pi-info { flex: 1; }

  .pi-name {
    font-size: 13px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 2px;
  }

  .pi-stars {
    font-size: 10px;
    letter-spacing: 1px;
    margin-bottom: 2px;
  }

  .pi-desc {
    color: #9bacc7;
    font-size: 11px;
    line-height: 1.35;
  }

  .panel-empty {
    color: #7f8da7;
    text-align: center;
    padding: 26px 10px;
    font-size: 12px;
  }

  .stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 7px 4px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 12px;
  }

  .stat-row.section {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.10);
    border-bottom: none;
  }

  .stat-label {
    color: #91a1ba;
  }

  .stat-value {
    color: #fff;
    font-weight: 800;
    text-align: right;
  }

  #upgrade-panel::-webkit-scrollbar,
  #stats-panel::-webkit-scrollbar { width: 5px; }
  #upgrade-panel::-webkit-scrollbar-thumb,
  #stats-panel::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.15);
    border-radius: 999px;
  }

  .summary-line {
    color: #d9e1ee;
    font-size: 14px;
    line-height: 1.5;
    margin: 4px 0;
  }

  .summary-line span {
    color: #fff;
    font-weight: 800;
  }

  .gameover-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 18px;
  }

  .gameover-actions .btn {
    min-width: min(320px, 82vw);
  }

  .footer-hint {
    position: fixed;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 8;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(6, 8, 14, 0.72);
    border: 1px solid rgba(255,255,255,0.08);
    color: #b4c0d7;
    font-size: 11px;
    pointer-events: none;
  }

  #wave-banner {
    position: fixed;
    top: 88px;
    left: 50%;
    transform: translateX(-50%) translateY(-18px);
    width: min(520px, calc(100vw - 32px));
    padding: 14px 18px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.10);
    background: linear-gradient(180deg, rgba(12,17,28,0.94), rgba(7,10,16,0.84));
    box-shadow: 0 18px 40px rgba(0,0,0,0.28);
    backdrop-filter: blur(10px);
    text-align: center;
    z-index: 12;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.24s ease, transform 0.24s ease;
  }

  #wave-banner.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }

  .wave-banner-title {
    font-size: 22px;
    font-weight: 900;
    color: #fff;
    line-height: 1.15;
  }

  .wave-banner-chapter {
    margin-top: 5px;
    color: var(--gold);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 1.3px;
    text-transform: uppercase;
  }

  .wave-banner-subtitle {
    margin-top: 5px;
    color: #d6deec;
    font-size: 12px;
    line-height: 1.4;
  }


  /* Pixel UI art pass: ancient-crypt HUD, bars, cards, and readable pixel fonts. */
  :root {
    --font-pixel-display: "Silkscreen", "Lucida Console", "Courier New", monospace;
    --font-pixel-readable: "VT323", "Silkscreen", "Lucida Console", "Courier New", monospace;
    --ui-panel-frame: url("assets/ui/pixel_panel_frame_32.png");
    --ui-bar-frame: url("assets/ui/pixel_bar_frame_64x16.png");
    --ui-card-frame: url("assets/ui/pixel_card_frame_48.png");
    --ui-card-rare-frame: url("assets/ui/pixel_card_frame_rare_48.png");
    --ui-card-epic-frame: url("assets/ui/pixel_card_frame_epic_48.png");
    --ui-card-special-frame: url("assets/ui/pixel_card_frame_special_48.png");
    --ui-button-frame: url("assets/ui/pixel_button_frame_32.png");
    --ui-glint: url("assets/ui/pixel_upgrade_glint_64.png");
    --ui-divider: url("assets/ui/pixel_divider_64x4.png");
    --ui-black: #030407;
    --ui-stone: #161820;
    --ui-stone-hi: #4c525e;
    --ui-bone: #e9d8ab;
    --ui-gold: #f5d675;
    --ui-teal: #51f1c3;
    --ui-violet: #a262ff;
    --ui-red: #e04e61;
  }

  body,
  button {
    font-family: var(--font-pixel-display);
    letter-spacing: 0.02em;
    -webkit-font-smoothing: none;
    font-smooth: never;
    text-rendering: geometricPrecision;
  }

  .subtitle,
  .instruction-box,
  .small-line,
  .upgrade-desc,
  .upgrade-meta,
  .upgrade-fit,
  .pi-desc,
  .panel-empty,
  .stat-row,
  .summary-line,
  .footer-hint,
  .wave-banner-subtitle {
    font-family: var(--font-pixel-readable);
    letter-spacing: 0.035em;
  }

  .subtitle,
  .instruction-box {
    font-size: 18px;
    line-height: 1.32;
  }

  .small-line {
    font-size: 15px;
    line-height: 1.05;
  }

  .upgrade-desc {
    font-size: 17px;
    line-height: 1.16;
    color: #dfe7f5;
  }

  .upgrade-meta,
  .upgrade-fit,
  .pi-desc,
  .panel-empty,
  .stat-row,
  .footer-hint,
  .summary-line,
  .wave-banner-subtitle {
    font-size: 15px;
    line-height: 1.16;
  }

  .hud-label,
  .side-title,
  .wave-banner-chapter,
  .special-label,
  .milestone-banner,
  .btn {
    font-family: var(--font-pixel-display);
    text-transform: uppercase;
  }

  .hud-label {
    color: var(--ui-bone);
    font-size: 10px;
    letter-spacing: 1.4px;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .hud-label::after,
  .side-title::after {
    content: '';
    display: block;
    height: 4px;
    margin-top: 5px;
    background: var(--ui-divider) left top / 64px 4px repeat-x;
    image-rendering: pixelated;
    opacity: 0.85;
  }

  .hud-value,
  .wave-banner-title,
  .overlay h1,
  .overlay h2,
  .upgrade-name,
  .pi-name,
  .stat-value {
    font-family: var(--font-pixel-display);
    text-shadow: 3px 3px 0 var(--ui-black);
  }

  .overlay h1 { font-size: clamp(30px, 4vw, 46px); }
  .overlay h2 { font-size: clamp(24px, 3vw, 34px); }

  .hud-block,
  .instruction-box,
  #wave-banner {
    border: 8px solid transparent;
    border-image: var(--ui-panel-frame) 8 fill stretch;
    border-radius: 0;
    background: rgba(9, 10, 16, 0.92);
    box-shadow: 0 0 0 2px var(--ui-black), 7px 7px 0 rgba(0,0,0,0.35);
    backdrop-filter: none;
    image-rendering: pixelated;
  }

  .hud-block {
    padding: 12px 16px;
  }

  .hud-block.health-block {
    min-width: 246px;
  }

  .bar-outer {
    position: relative;
    width: 214px;
    height: 22px !important;
    margin-top: 7px !important;
    border: 5px solid transparent;
    border-image: var(--ui-bar-frame) 5 fill stretch;
    border-radius: 0;
    background: #0c0d14;
    box-shadow: 0 0 0 2px var(--ui-black), inset 0 0 0 1px rgba(255,255,255,0.04);
    overflow: hidden;
    image-rendering: pixelated;
  }

  .labeled-bar .bar-label {
    position: absolute;
    left: 9px;
    top: 50%;
    z-index: 3;
    transform: translateY(-50%);
    color: #f4f7fb;
    font-family: var(--font-pixel-display);
    font-size: 9px;
    line-height: 1;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-shadow: 2px 2px 0 var(--ui-black), -1px 0 0 var(--ui-black), 0 -1px 0 var(--ui-black);
    pointer-events: none;
    white-space: nowrap;
  }

  .xp-outer .bar-label {
    color: #e9d8ff;
  }

  .barrier-outer .bar-label {
    color: #d7fff5;
  }

  .bar-outer.barrier-outer,
  .bar-outer.xp-outer {
    height: 18px !important;
    margin-top: 6px !important;
  }

  .bar-inner {
    display: block;
    position: relative;
    height: 100%;
    image-rendering: pixelated;
    transition: none;
    box-shadow: inset 0 2px 0 rgba(255,255,255,0.20), inset 0 -2px 0 rgba(0,0,0,0.32);
  }

  .bar-inner::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
      repeating-linear-gradient(90deg, rgba(255,255,255,0.10) 0 2px, transparent 2px 8px),
      linear-gradient(180deg, rgba(255,255,255,0.18), transparent 48%, rgba(0,0,0,0.26));
    pointer-events: none;
  }

  #hp-bar {
    background-color: #c63d51;
    background-image: url("assets/ui/pixel_health_fill_32x8.png"), linear-gradient(90deg, #892939 0%, #e04e61 62%, #f5d675 100%);
    background-size: 32px 100%, 100% 100%;
  }

  #barrier-bar {
    background-color: #36cbbb;
    background-image: url("assets/ui/pixel_barrier_fill_32x8.png"), linear-gradient(90deg, #127c71 0%, #51f1c3 62%, #a262ff 100%);
    background-size: 32px 100%, 100% 100%;
  }

  #xp-bar {
    background-color: #8a5cff;
    background-image: url("assets/ui/pixel_xp_fill_32x8.png"), linear-gradient(90deg, #442a70 0%, #a262ff 58%, #51f1c3 100%);
    background-size: 32px 100%, 100% 100%;
  }

  .hidden-hud-value {
    display: none !important;
  }

  .hud-block.health-block.bars-only {
    min-width: 246px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .health-block.bars-only .bar-outer:first-child {
    margin-top: 0 !important;
  }

  .health-block.bars-only .bar-outer.xp-outer {
    margin-top: 8px !important;
  }

  .mana-block {
    min-width: 236px !important;
    text-align: left;
  }

  .mana-block .hud-label {
    margin-bottom: 6px;
  }

  .mana-outer {
    width: 202px;
    height: 24px !important;
    margin-top: 4px !important;
  }

  #mana-bar {
    background-color: #155be0;
    background-image: url("assets/ui/pixel_mana_fill_blue_32x8.png"), linear-gradient(90deg, #06256c 0%, #155be0 46%, #5aa8ff 100%);
    background-size: 32px 100%, 100% 100%;
  }

  .mana-block.reloading #mana-bar {
    background-image: url("assets/ui/pixel_mana_fill_blue_32x8.png"), linear-gradient(90deg, #0a2f82 0%, #216eff 58%, #8bc2ff 100%);
    filter: brightness(1.12) saturate(1.08);
  }

  #upgrade-subtitle {
    display: none;
  }

  .overlay {
    background:
      linear-gradient(rgba(5,6,10,0.86), rgba(5,6,10,0.92)),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.035) 0 2px, transparent 2px 6px),
      radial-gradient(circle at 50% 38%, rgba(81,241,195,0.14), transparent 34%),
      #05060a;
    backdrop-filter: none;
  }

  .overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
      repeating-linear-gradient(90deg, rgba(214,174,76,0.05) 0 1px, transparent 1px 24px),
      repeating-linear-gradient(0deg, rgba(76,82,94,0.06) 0 1px, transparent 1px 24px);
    opacity: 0.45;
  }

  .overlay > * {
    position: relative;
    z-index: 1;
  }

  .btn {
    border: 8px solid transparent;
    border-image: var(--ui-button-frame) 8 fill stretch;
    border-radius: 0;
    background: rgba(9, 10, 16, 0.96);
    color: var(--ui-gold);
    box-shadow: 0 0 0 2px var(--ui-black), 5px 5px 0 rgba(0,0,0,0.45);
    padding: 10px 28px;
    font-size: 14px;
    line-height: 1.1;
    text-shadow: 2px 2px 0 var(--ui-black);
    transition: transform 0.08s steps(2, end), filter 0.08s steps(2, end), box-shadow 0.08s steps(2, end);
  }

  .btn:hover {
    background: rgba(245, 214, 117, 0.12);
    color: #fff2b5;
    transform: translate(-2px, -2px);
    box-shadow: 0 0 0 2px var(--ui-black), 7px 7px 0 rgba(0,0,0,0.48), 0 0 16px rgba(245,214,117,0.28);
  }

  .btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 2px var(--ui-black), 2px 2px 0 rgba(0,0,0,0.55);
  }

  .btn.secondary {
    color: #dfe7f5;
    border-image-source: var(--ui-card-frame);
  }

  .upgrade-cards {
    gap: 18px;
    align-items: stretch;
  }

  .upgrade-card {
    position: relative;
    width: 230px;
    min-height: 248px;
    padding: 22px 18px 18px;
    border: 12px solid transparent;
    border-image: var(--ui-card-frame) 12 fill stretch;
    border-radius: 0;
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(8, 11, 18, 0.94);
    box-shadow: 0 0 0 2px var(--ui-black), 8px 8px 0 rgba(0,0,0,0.38);
    image-rendering: pixelated;
    transition: transform 0.08s steps(2, end), filter 0.08s steps(2, end), box-shadow 0.08s steps(2, end);
  }

  .upgrade-card > * {
    position: relative;
    z-index: 1;
  }

  .upgrade-card::after {
    content: '';
    position: absolute;
    inset: 8px;
    background: var(--ui-glint) right top / 64px 64px no-repeat;
    opacity: 0.42;
    pointer-events: none;
    image-rendering: pixelated;
    z-index: 0;
  }

  .upgrade-card:hover {
    transform: translate(-2px, -5px);
    filter: brightness(1.12) saturate(1.08);
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0 2px, transparent 2px 10px),
      rgba(13, 17, 28, 0.98);
    box-shadow: 0 0 0 2px var(--ui-black), 10px 12px 0 rgba(0,0,0,0.45), 0 0 18px rgba(245,214,117,0.22);
  }

  .upgrade-card.tier-1 {
    border-image-source: var(--ui-card-frame);
  }

  .upgrade-card.tier-2 {
    border-image-source: var(--ui-card-rare-frame);
    box-shadow: 0 0 0 2px var(--ui-black), 8px 8px 0 rgba(0,0,0,0.38), 0 0 20px rgba(120,169,255,0.18);
  }

  .upgrade-card.tier-3 {
    border-image-source: var(--ui-card-epic-frame);
    box-shadow: 0 0 0 2px var(--ui-black), 8px 8px 0 rgba(0,0,0,0.38), 0 0 22px rgba(162,98,255,0.20);
  }

  .upgrade-card.tier-2 .upgrade-stars { color: #78a9ff; }
  .upgrade-card.tier-3 .upgrade-stars { color: #c89dff; }

  .upgrade-card.special {
    border-image-source: var(--ui-card-special-frame);
    border-width: 12px;
    overflow: hidden;
    box-shadow: 0 0 0 2px var(--ui-black), 8px 8px 0 rgba(0,0,0,0.40), 0 0 26px rgba(245,214,117,0.22);
  }

  .upgrade-card.special::before {
    z-index: 0;
    opacity: 0.22;
  }

  .upgrade-card.path-inferno { --path-glow: rgba(255,139,97,0.38); }
  .upgrade-card.path-cryo { --path-glow: rgba(126,217,255,0.38); }
  .upgrade-card.path-sniper { --path-glow: rgba(255,211,109,0.38); }
  .upgrade-card.path-barrage { --path-glow: rgba(155,179,255,0.38); }
  .upgrade-card.path-overload { --path-glow: rgba(151,240,209,0.38); }

  .upgrade-card.special:hover {
    box-shadow: 0 0 0 2px var(--ui-black), 10px 12px 0 rgba(0,0,0,0.45), 0 0 28px var(--path-glow, rgba(245,214,117,0.32));
  }

  .upgrade-stars {
    font-size: 14px;
    color: var(--ui-gold);
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .upgrade-icon {
    font-size: 38px;
    filter: drop-shadow(3px 3px 0 var(--ui-black));
  }

  .upgrade-name {
    color: #fff2b5;
    font-size: 15px;
    line-height: 1.18;
  }

  .special-label {
    border-radius: 0;
    border: 2px solid rgba(255,255,255,0.22);
    background: rgba(3,4,7,0.72);
    box-shadow: 2px 2px 0 var(--ui-black);
  }

  .special-label.type-core,
  .special-label.type-mastery {
    color: var(--ui-black);
    text-shadow: none;
  }

  #upgrade-panel,
  #stats-panel {
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      linear-gradient(180deg, rgba(10,14,23,0.98), rgba(5,6,10,0.96));
    backdrop-filter: none;
    image-rendering: pixelated;
  }

  #upgrade-panel { border-right: 6px solid #4c525e; }
  #stats-panel { border-left: 6px solid #4c525e; }

  #panel-toggle,
  #stats-toggle {
    border-radius: 0;
    border: 6px solid transparent;
    border-image: var(--ui-button-frame) 8 fill stretch;
    background: rgba(9, 10, 16, 0.96);
    color: var(--ui-gold);
    box-shadow: 0 0 0 2px var(--ui-black);
    font-family: var(--font-pixel-display);
    image-rendering: pixelated;
  }

  .panel-item,
  .stat-row {
    border-bottom-color: rgba(233,216,171,0.14);
  }

  .wave-banner-title {
    color: #fff2b5;
  }

  .wave-banner-chapter,
  .wave-banner-subtitle {
    display: none;
  }

  #wave-banner {
    width: auto;
    min-width: 170px;
    padding-left: 22px;
    padding-right: 22px;
  }

  #reload-text {
    font-family: var(--font-pixel-readable);
    font-size: 15px;
    line-height: 1;
    color: #ff8b61;
  }

  .upgrade-icon {
    width: 52px;
    height: 52px;
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: none;
  }

  .upgrade-icon-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    image-rendering: pixelated;
    filter: drop-shadow(3px 3px 0 var(--ui-black));
  }

  .upgrade-card.special .upgrade-icon-img {
    filter: drop-shadow(3px 3px 0 var(--ui-black)) drop-shadow(0 0 10px var(--path-glow, rgba(245,214,117,0.38)));
  }

  .pi-icon {
    width: 36px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    flex-shrink: 0;
  }

  .pi-icon .upgrade-icon-img {
    width: 32px;
    height: 32px;
  }



  .audio-settings {
    width: min(460px, 90vw);
    margin: -4px 0 22px;
    padding: 14px 16px 16px;
    border: 2px solid rgba(245,196,81,0.42);
    background: rgba(3,4,7,0.66);
    box-shadow: 4px 4px 0 rgba(0,0,0,0.55), inset 0 0 0 1px rgba(255,255,255,0.07);
    text-align: left;
  }

  .audio-settings-title {
    color: var(--gold);
    font-family: var(--font-pixel-display, "Silkscreen", "Lucida Console", monospace);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
    text-shadow: 2px 2px 0 rgba(0,0,0,0.85);
  }

  .volume-row {
    display: grid;
    grid-template-columns: 78px 1fr 46px;
    align-items: center;
    gap: 12px;
    min-height: 34px;
    color: #e6edfb;
    font-family: var(--font-pixel-readable, "VT323", "Lucida Console", monospace);
    font-size: 18px;
  }

  .volume-row + .volume-row {
    margin-top: 8px;
  }

  .volume-row input[type="range"] {
    width: 100%;
    accent-color: var(--gold);
    cursor: pointer;
  }

  .volume-value {
    color: #fff2b5;
    font-variant-numeric: tabular-nums;
    text-align: right;
  }

  @media (max-width: 560px) {
    .audio-settings { padding: 12px; }
    .volume-row { grid-template-columns: 62px 1fr 42px; gap: 8px; font-size: 16px; }
  }


  /* Main menu panels added for Crypt Siege: Lich Wars. Kept isolated from combat UI. */
  #start-screen h1 {
    color: #fff2b5;
    margin-bottom: 18px;
  }

  .main-menu-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-top: 4px;
  }

  .btn.menu-btn {
    min-width: 310px;
    padding: 16px 46px;
    font-size: 18px;
    line-height: 1.05;
  }

  .btn.exit-btn {
    position: fixed;
    right: 22px;
    bottom: 18px;
    z-index: 2;
    min-width: 108px;
    padding: 8px 18px;
    font-size: 12px;
    line-height: 1;
  }

  .menu-panel.character-select-panel {
    width: min(660px, 94vw);
    padding-bottom: 24px;
  }

  .menu-panel.character-select-panel h2 {
    margin-bottom: 18px;
  }

  .character-select-stage {
    display: grid;
    grid-template-columns: 68px minmax(220px, 1fr) 68px;
    align-items: center;
    justify-items: center;
    gap: 12px;
    width: 100%;
  }

  .character-card-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: min(360px, 100%);
  }

  .character-portrait-frame {
    --character-frame-size: clamp(184px, 32vw, 238px);
    width: calc(var(--character-frame-size) + 30px);
    height: calc(var(--character-frame-size) + 30px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    border: 12px solid transparent;
    border-image: var(--ui-card-frame) 12 fill stretch;
    background:
      radial-gradient(circle at 50% 56%, rgba(81,241,195,0.20), transparent 48%),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(5, 7, 12, 0.94);
    box-shadow: 0 0 0 2px var(--ui-black), 8px 8px 0 rgba(0,0,0,0.42), inset 0 0 0 1px rgba(255,255,255,0.06);
    image-rendering: pixelated;
  }

  .character-idle-sprite {
    --character-sheet-size: calc(var(--character-frame-size) + var(--character-frame-size) + var(--character-frame-size) + var(--character-frame-size));
    width: var(--character-frame-size);
    height: var(--character-frame-size);
    background-image: url("assets/player/player_Idle.png");
    background-repeat: no-repeat;
    background-size: var(--character-sheet-size) var(--character-sheet-size);
    background-position: 0 0;
    image-rendering: pixelated;
    animation: character-idle-first-row 0.72s steps(4, end) infinite;
    filter: drop-shadow(5px 5px 0 var(--ui-black)) drop-shadow(0 0 12px rgba(81,241,195,0.18));
  }

  .character-card-display.is-locked {
    filter: grayscale(1) saturate(0.18) brightness(0.82);
  }

  .character-portrait-frame.is-locked {
    background:
      radial-gradient(circle at 50% 56%, rgba(190,190,190,0.12), transparent 48%),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(5, 7, 12, 0.94);
  }

  .character-idle-sprite.is-locked {
    filter: grayscale(1) saturate(0.12) brightness(0.76) drop-shadow(5px 5px 0 var(--ui-black));
  }

  .character-name.is-locked {
    color: #cfc7b0;
  }

  .character-question-sprite {
    width: clamp(150px, 26vw, 216px);
    height: clamp(150px, 26vw, 216px);
    object-fit: contain;
    image-rendering: pixelated;
    filter: drop-shadow(5px 5px 0 var(--ui-black)) drop-shadow(0 0 12px rgba(245,214,117,0.20));
  }

  @keyframes character-idle-first-row {
    from { background-position: 0 0; }
    to { background-position: calc(0px - var(--character-sheet-size)) 0; }
  }

  .character-name {
    min-height: 32px;
    margin-bottom: 14px;
    color: #fff2b5;
    font-family: var(--font-pixel-display);
    font-size: clamp(19px, 3vw, 26px);
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 3px 3px 0 var(--ui-black);
  }

  .character-action-btn {
    min-width: 232px;
    padding: 14px 34px;
    font-size: 16px;
  }

  .character-action-btn.is-locked,
  .character-action-btn:disabled {
    color: rgba(233,216,171,0.54);
    border-image-source: var(--ui-card-frame);
    background: rgba(6, 8, 13, 0.92);
    filter: grayscale(0.35) brightness(0.82);
    cursor: default;
    transform: none;
    box-shadow: 0 0 0 2px var(--ui-black), 5px 5px 0 rgba(0,0,0,0.45);
  }

  .character-action-btn.is-locked:hover,
  .character-action-btn:disabled:hover {
    color: rgba(233,216,171,0.54);
    background: rgba(6, 8, 13, 0.92);
    transform: none;
    box-shadow: 0 0 0 2px var(--ui-black), 5px 5px 0 rgba(0,0,0,0.45);
  }

  .character-arrow {
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 8px solid transparent;
    border-image: var(--ui-button-frame) 8 fill stretch;
    border-radius: 0;
    background: rgba(9, 10, 16, 0.96);
    box-shadow: 0 0 0 2px var(--ui-black), 5px 5px 0 rgba(0,0,0,0.45);
    cursor: pointer;
    transition: transform 0.08s steps(2, end), filter 0.08s steps(2, end), box-shadow 0.08s steps(2, end);
    image-rendering: pixelated;
  }

  .character-arrow img {
    width: 30px;
    height: 30px;
    display: block;
    image-rendering: pixelated;
    pointer-events: none;
  }

  .character-arrow:hover {
    background: rgba(245, 214, 117, 0.12);
    transform: translate(-2px, -2px);
    box-shadow: 0 0 0 2px var(--ui-black), 7px 7px 0 rgba(0,0,0,0.48), 0 0 16px rgba(245,214,117,0.28);
  }

  .character-arrow:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 2px var(--ui-black), 2px 2px 0 rgba(0,0,0,0.55);
  }

  .character-arrow.is-hidden {
    visibility: hidden;
    pointer-events: none;
  }

  .character-select-actions {
    margin-top: 14px;
  }

  .menu-panel {
    width: min(760px, 92vw);
    max-height: calc(100vh - 64px);
    padding: 24px 26px 26px;
    border: 8px solid transparent;
    border-image: var(--ui-panel-frame) 8 fill stretch;
    border-radius: 0;
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.028) 0 2px, transparent 2px 10px),
      rgba(9, 10, 16, 0.96);
    box-shadow: 0 0 0 2px var(--ui-black), 10px 10px 0 rgba(0,0,0,0.48);
    image-rendering: pixelated;
    text-align: center;
  }

  .menu-panel h2 {
    color: #fff2b5;
    margin-bottom: 14px;
  }

  .menu-panel .subtitle,
  .menu-story {
    margin: 0 auto 20px;
    max-width: 620px;
  }

  .menu-story {
    padding: 16px 18px;
    border: 2px solid rgba(245,214,117,0.32);
    background: rgba(3,4,7,0.48);
    color: #dfe7f5;
    font-family: var(--font-pixel-readable);
    font-size: 20px;
    line-height: 1.22;
    letter-spacing: 0.035em;
    text-align: left;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06), 4px 4px 0 rgba(0,0,0,0.38);
  }

  .menu-story-guide {
    margin-top: -8px;
    border-color: rgba(120,169,255,0.30);
    color: #eef4ff;
  }

  .collection-best-run {
    padding: 10px 14px;
    border: 2px solid rgba(245,214,117,0.30);
    background: rgba(3,4,7,0.45);
    color: #fff2b5;
    font-family: var(--font-pixel-display);
    font-size: 14px;
    line-height: 1.35;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 2px 2px 0 var(--ui-black);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06), 4px 4px 0 rgba(0,0,0,0.34);
  }

  .character-best-run-list {
    width: min(330px, 100%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: -4px 0 10px;
  }

  .menu-panel .character-best-run-entry {
    width: 100%;
    margin: 0;
    text-align: center;
    font-size: 13px;
    line-height: 1.28;
  }

  .menu-panel-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 12px;
  }

  .menu-panel-actions .btn.secondary {
    margin-top: 0;
  }

  #options-screen .audio-settings {
    width: min(480px, 100%);
    margin: 0 auto 18px;
  }

  #collection-screen .menu-panel {
    width: min(1180px, 95vw);
    max-height: calc(100vh - 44px);
    padding: 22px 22px 24px;
  }

  .collection-scroll {
    width: 100%;
    max-height: min(66vh, 650px);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 14px 18px;
    border: 2px solid rgba(245,214,117,0.25);
    background: rgba(3,4,7,0.42);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
  }

  .collection-scroll::-webkit-scrollbar { width: 8px; }
  .collection-scroll::-webkit-scrollbar-thumb {
    background: rgba(245,214,117,0.38);
    border-radius: 0;
  }

  .collection-cards {
    justify-content: center;
    align-items: stretch;
    margin-bottom: 0;
    padding-bottom: 6px;
  }

  #collection-cards .upgrade-card {
    flex: 0 0 230px;
    cursor: default;
  }

  #collection-cards .upgrade-card:hover {
    transform: none;
    filter: none;
  }

  #collection-cards .locked-card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 248px;
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.018) 0 2px, transparent 2px 10px),
      rgba(6, 8, 13, 0.96);
  }

  #collection-cards .locked-card::after {
    opacity: 0.24;
  }

  .locked-question-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 76px;
    height: 76px;
    border: 4px solid rgba(245,214,117,0.28);
    background: rgba(3,4,7,0.58);
    color: rgba(255,242,181,0.92);
    font-family: var(--font-pixel-display);
    font-size: 56px;
    line-height: 1;
    text-shadow: 4px 4px 0 var(--ui-black);
    box-shadow: 4px 4px 0 rgba(0,0,0,0.44), inset 0 0 0 2px rgba(255,255,255,0.05);
  }

  .collection-section-title {
    width: 100%;
    margin: 10px 0 -2px;
    padding: 0 4px 8px;
    color: var(--ui-gold);
    font-family: var(--font-pixel-display);
    font-size: 15px;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 2px 2px 0 var(--ui-black);
    border-bottom: 1px solid rgba(245,214,117,0.22);
  }

  .exit-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background: #05060a;
    color: #fff2b5;
    font-family: var(--font-pixel-display);
    text-align: center;
  }

  @media (max-width: 560px) {
    .btn.menu-btn { min-width: min(300px, 86vw); font-size: 16px; padding: 14px 28px; }
    .btn.exit-btn { right: 12px; bottom: 12px; font-size: 11px; min-width: 92px; }
    .menu-panel { padding: 20px 18px 22px; }
    .menu-panel.character-select-panel { padding: 18px 12px 20px; }
    .character-select-stage { grid-template-columns: 44px minmax(160px, 1fr) 44px; gap: 6px; }
    .character-portrait-frame { --character-frame-size: clamp(148px, 50vw, 184px); }
    .character-arrow { width: 44px; height: 44px; border-width: 6px; }
    .character-arrow img { width: 24px; height: 24px; }
    .character-action-btn { min-width: min(210px, 68vw); padding: 12px 24px; font-size: 14px; }
    .menu-story { font-size: 18px; }
    .collection-scroll { max-height: 62vh; padding: 10px; }
  }

  @media (max-width: 980px) {
    .upgrade-card { width: min(280px, 90vw); }
    #hud { gap: 8px; padding: 10px; }
    .hud-block { min-width: 120px; padding: 8px 10px; }
    .hud-value { font-size: 20px; }
    #wave-banner { top: 78px; padding: 12px 14px; }
    .wave-banner-title { font-size: 18px; }
  }

  /* In-game pause and audio menu update. */
  #pause-btn {
    position: fixed;
    top: 14px;
    right: 18px;
    z-index: 24;
    width: 50px;
    height: 44px;
    display: none;
    align-items: center;
    justify-content: center;
    border: 8px solid transparent;
    border-image: var(--ui-button-frame) 8 fill stretch;
    border-radius: 0;
    background: rgba(9, 10, 16, 0.96);
    color: var(--ui-gold);
    box-shadow: 0 0 0 2px var(--ui-black), 4px 4px 0 rgba(0,0,0,0.45);
    font-family: var(--font-pixel-display, "Silkscreen", "Lucida Console", monospace);
    font-size: 14px;
    line-height: 1;
    text-shadow: 2px 2px 0 var(--ui-black);
    cursor: pointer;
    image-rendering: pixelated;
    pointer-events: auto;
    transition: transform 0.08s steps(2, end), filter 0.08s steps(2, end), box-shadow 0.08s steps(2, end);
  }

  #pause-btn.visible { display: flex; }

  #pause-btn:hover {
    filter: brightness(1.18);
    transform: translate(-2px, -2px);
    box-shadow: 0 0 0 2px var(--ui-black), 6px 6px 0 rgba(0,0,0,0.50), 0 0 14px rgba(245,214,117,0.26);
  }

  #pause-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 2px var(--ui-black), 2px 2px 0 rgba(0,0,0,0.58);
  }

  body.game-paused #pause-btn { display: none; }

  body.game-paused #game-canvas,
  body.game-paused #hud,
  body.game-paused #wave-banner,
  body.game-paused #upgrade-panel,
  body.game-paused #stats-panel,
  body.game-paused #panel-toggle,
  body.game-paused #stats-toggle {
    filter: grayscale(1) saturate(0) contrast(1.08) brightness(0.82);
  }

  .pause-panel {
    width: min(520px, 92vw);
    padding: 22px 24px 24px;
    border: 8px solid transparent;
    border-image: var(--ui-panel-frame) 8 fill stretch;
    border-radius: 0;
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.028) 0 2px, transparent 2px 10px),
      rgba(9, 10, 16, 0.96);
    box-shadow: 0 0 0 2px var(--ui-black), 10px 10px 0 rgba(0,0,0,0.48);
    image-rendering: pixelated;
  }

  .pause-panel h2 {
    color: #fff2b5;
    margin-bottom: 12px;
  }

  #pause-screen { background: rgba(0, 0, 0, 0.52); }

  #pause-screen .audio-settings {
    width: 100%;
    margin: 10px auto 18px;
  }

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

  .pause-actions .btn.secondary { margin-top: 0; }

  #hud { padding-right: 88px; }

  @media (max-width: 980px) {
    #hud { padding-right: 72px; }
    #pause-btn { top: 10px; right: 10px; width: 46px; height: 40px; }
  }


  /* Global Lich progression and hybrid talent cards. */
  .lich-progression-panel {
    width: min(330px, 100%);
    margin: -2px 0 14px;
    padding: 12px 14px 13px;
    border: 4px solid rgba(245,214,117,0.36);
    background:
      radial-gradient(circle at 50% 0%, rgba(162,98,255,0.18), transparent 52%),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(3,4,7,0.62);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06), 4px 4px 0 rgba(0,0,0,0.40);
    image-rendering: pixelated;
    text-align: left;
  }

  .lich-progression-panel[hidden] {
    display: none !important;
  }

  .lich-progression-panel.is-empty > * {
    visibility: hidden;
  }

  .lich-progression-title {
    color: var(--ui-gold);
    font-family: var(--font-pixel-display);
    font-size: 11px;
    line-height: 1;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .lich-global-level {
    margin-top: 7px;
    color: #fff2b5;
    font-family: var(--font-pixel-display);
    font-size: 14px;
    line-height: 1.1;
    text-transform: uppercase;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .lich-global-xp-outer {
    width: 100%;
    height: 18px !important;
    margin: 8px 0 6px !important;
  }

  #lich-global-xp-bar {
    background-color: #8a5cff;
    background-image: url("assets/ui/pixel_xp_fill_32x8.png"), linear-gradient(90deg, #442a70 0%, #a262ff 55%, #51f1c3 100%);
    background-size: 32px 100%, 100% 100%;
  }

  .lich-global-xp-text,
  .lich-next-unlock {
    color: #dfe7f5;
    font-family: var(--font-pixel-readable);
    font-size: 16px;
    line-height: 1.12;
    letter-spacing: 0.035em;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .lich-next-unlock {
    margin-top: 4px;
    color: #8df3da;
  }

  .upgrade-card.hybrid {
    background:
      radial-gradient(circle at 50% 0%, rgba(81,241,195,0.12), transparent 52%),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.03) 0 2px, transparent 2px 10px),
      rgba(8, 11, 18, 0.95);
    box-shadow: 0 0 0 2px var(--ui-black), 8px 8px 0 rgba(0,0,0,0.38), 0 0 24px rgba(81,241,195,0.16), 0 0 18px rgba(162,98,255,0.12);
  }

  .upgrade-card.hybrid:hover {
    box-shadow: 0 0 0 2px var(--ui-black), 10px 12px 0 rgba(0,0,0,0.45), 0 0 26px rgba(81,241,195,0.22), 0 0 22px rgba(162,98,255,0.18);
  }

  .hybrid-label {
    display: inline-block;
    margin: 0 0 8px;
    padding: 4px 7px;
    border: 2px solid rgba(81,241,195,0.38);
    background: rgba(3,4,7,0.72);
    color: #8df3da;
    font-family: var(--font-pixel-display);
    font-size: 9px;
    line-height: 1;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    text-shadow: 2px 2px 0 var(--ui-black);
    box-shadow: 2px 2px 0 var(--ui-black);
  }

  #collection-cards .locked-hybrid .locked-question-mark {
    border-color: rgba(81,241,195,0.28);
    color: rgba(141,243,218,0.85);
  }

  .run-unlock-list {
    margin-top: 4px;
  }

  .lich-unlock-line span {
    color: #8df3da;
  }

  /* Save reset, achievements, and mana-recharge UI additions. */
  .btn.achievements-corner-btn {
    position: fixed;
    left: 22px;
    bottom: 18px;
    z-index: 2;
    min-width: 154px;
    padding: 8px 18px;
    font-size: 12px;
    line-height: 1;
  }

  .btn.danger {
    color: #ffb7b7;
    border-image-source: var(--ui-card-epic-frame);
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(38, 8, 13, 0.96);
  }

  .btn.danger:hover {
    color: #fff2b5;
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.035) 0 2px, transparent 2px 10px),
      rgba(80, 19, 29, 0.98);
    box-shadow: 0 0 0 2px var(--ui-black), 7px 7px 0 rgba(0,0,0,0.48), 0 0 18px rgba(224,78,97,0.36);
  }

  .save-reset-row {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(245,214,117,0.24);
    text-align: center;
  }

  .reset-save-btn {
    width: min(320px, 100%);
    color: #ffb7b7;
  }

  .save-reset-note {
    margin: 9px auto 0;
    max-width: 360px;
    color: #d8a4a4;
    font-family: var(--font-pixel-readable, "VT323", "Lucida Console", monospace);
    font-size: 17px;
    line-height: 1.1;
    letter-spacing: 0.035em;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .confirmation-overlay {
    z-index: 140;
    background:
      linear-gradient(rgba(0,0,0,0.72), rgba(0,0,0,0.82)),
      repeating-linear-gradient(0deg, rgba(224,78,97,0.06) 0 2px, transparent 2px 8px),
      #05060a;
  }

  .confirm-panel {
    width: min(560px, 92vw);
    padding: 24px 24px 26px;
    border: 8px solid transparent;
    border-image: var(--ui-panel-frame) 8 fill stretch;
    background:
      radial-gradient(circle at 50% 0%, rgba(224,78,97,0.18), transparent 56%),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(8, 11, 18, 0.98);
    box-shadow: 0 0 0 2px var(--ui-black), 10px 10px 0 rgba(0,0,0,0.48), 0 0 24px rgba(224,78,97,0.16);
    image-rendering: pixelated;
  }

  .confirm-panel h2 {
    margin: 0 auto 14px;
    color: #fff2b5;
  }

  .confirm-icon {
    width: 58px;
    height: 58px;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 6px solid transparent;
    border-image: var(--ui-card-epic-frame) 8 fill stretch;
    background: rgba(58, 10, 18, 0.92);
    color: #ffb7b7;
    font-family: var(--font-pixel-display);
    font-size: 34px;
    line-height: 1;
    text-shadow: 3px 3px 0 var(--ui-black);
    box-shadow: 0 0 0 2px var(--ui-black), 4px 4px 0 rgba(0,0,0,0.42);
  }

  .confirm-warning {
    padding: 14px 16px;
    border: 2px solid rgba(224,78,97,0.38);
    background: rgba(3,4,7,0.62);
    color: #f4dcdc;
    font-family: var(--font-pixel-readable, "VT323", "Lucida Console", monospace);
    font-size: 19px;
    line-height: 1.18;
    letter-spacing: 0.035em;
    text-align: left;
    text-shadow: 2px 2px 0 var(--ui-black);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05), 4px 4px 0 rgba(0,0,0,0.34);
  }

  .summoner-intro-panel {
    background:
      radial-gradient(circle at 50% 0%, rgba(162,98,255,0.18), transparent 56%),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(8, 11, 18, 0.98);
    box-shadow: 0 0 0 2px var(--ui-black), 10px 10px 0 rgba(0,0,0,0.48), 0 0 24px rgba(162,98,255,0.18);
  }

  .summoner-intro-icon {
    background: rgba(30, 10, 58, 0.92);
    color: #e2bcff;
    box-shadow: 0 0 0 2px var(--ui-black), 4px 4px 0 rgba(0,0,0,0.42), 0 0 16px rgba(162,98,255,0.20);
  }

  .summoner-intro-warning {
    border-color: rgba(162,98,255,0.38);
    color: #efe2ff;
  }

  .confirm-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
  }

  #achievements-screen .achievements-panel {
    width: min(980px, 95vw);
    max-height: calc(100vh - 44px);
    padding: 22px 22px 24px;
  }

  .achievements-summary {
    margin-bottom: 14px !important;
    padding: 10px 14px;
    border: 2px solid rgba(81,241,195,0.26);
    background: rgba(3,4,7,0.45);
    color: #d7fff5;
    font-family: var(--font-pixel-readable, "VT323", "Lucida Console", monospace);
    font-size: 19px;
    line-height: 1.1;
    letter-spacing: 0.035em;
    text-shadow: 2px 2px 0 var(--ui-black);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05), 4px 4px 0 rgba(0,0,0,0.32);
  }

  .achievements-scroll {
    width: 100%;
    max-height: min(66vh, 650px);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 14px 18px;
    border: 2px solid rgba(245,214,117,0.25);
    background: rgba(3,4,7,0.42);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
  }

  .achievements-scroll::-webkit-scrollbar { width: 8px; }
  .achievements-scroll::-webkit-scrollbar-thumb {
    background: rgba(81,241,195,0.38);
    border-radius: 0;
  }

  .achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 14px;
    align-items: stretch;
    padding-bottom: 6px;
  }

  .achievement-section-title {
    grid-column: 1 / -1;
    margin: 8px 0 -2px;
    padding: 0 4px 8px;
    color: var(--ui-gold);
    font-family: var(--font-pixel-display);
    font-size: 15px;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 2px 2px 0 var(--ui-black);
    border-bottom: 1px solid rgba(245,214,117,0.22);
  }

  .achievement-card {
    position: relative;
    min-height: 170px;
    padding: 14px 12px 12px;
    border: 10px solid transparent;
    border-image: var(--ui-card-frame) 10 fill stretch;
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.022) 0 2px, transparent 2px 10px),
      rgba(8, 11, 18, 0.95);
    box-shadow: 0 0 0 2px var(--ui-black), 6px 6px 0 rgba(0,0,0,0.38);
    text-align: left;
    image-rendering: pixelated;
    overflow: hidden;
    transition: transform 0.08s steps(2, end), filter 0.08s steps(2, end), box-shadow 0.08s steps(2, end);
  }

  .achievement-card.unlocked {
    border-image-source: var(--ui-card-rare-frame);
    box-shadow: 0 0 0 2px var(--ui-black), 6px 6px 0 rgba(0,0,0,0.38), 0 0 20px rgba(81,241,195,0.16);
  }

  .achievement-card.locked {
    filter: saturate(0.72) brightness(0.88);
  }

  .achievement-card:hover,
  .achievement-card:focus {
    transform: translate(-2px, -2px);
    filter: none;
    outline: none;
    box-shadow: 0 0 0 2px var(--ui-black), 8px 8px 0 rgba(0,0,0,0.44), 0 0 18px rgba(245,214,117,0.18);
  }

  .achievement-card-top {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
  }

  .achievement-card-icon {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid rgba(245,214,117,0.22);
    background: rgba(3,4,7,0.42);
    box-shadow: 3px 3px 0 rgba(0,0,0,0.34);
  }

  .achievement-card-icon .upgrade-icon-img,
  .achievement-toast-icon .upgrade-icon-img {
    width: 38px;
    height: 38px;
  }

  .achievement-card-title-wrap {
    min-width: 0;
  }

  .achievement-card-name {
    color: #fff2b5;
    font-family: var(--font-pixel-display);
    font-size: 12px;
    line-height: 1.15;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .achievement-card-state {
    margin-top: 3px;
    color: #8df3da;
    font-family: var(--font-pixel-display);
    font-size: 9px;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .achievement-card.locked .achievement-card-state {
    color: #a8b2c4;
  }

  .achievement-card-bar {
    position: relative;
    width: 100%;
    height: 16px;
    margin-top: 14px;
    border: 4px solid transparent;
    border-image: var(--ui-bar-frame) 5 fill stretch;
    background: #0c0d14;
    box-shadow: 0 0 0 1px var(--ui-black);
    overflow: hidden;
  }

  .achievement-card-fill {
    height: 100%;
    background-color: #155be0;
    background-image: url("assets/ui/pixel_mana_fill_blue_32x8.png"), linear-gradient(90deg, #155be0 0%, #51f1c3 100%);
    background-size: 32px 100%, 100% 100%;
    box-shadow: inset 0 2px 0 rgba(255,255,255,0.18), inset 0 -2px 0 rgba(0,0,0,0.24);
  }

  .achievement-card-progress {
    margin-top: 8px;
    color: #dfe7f5;
    font-family: var(--font-pixel-readable, "VT323", "Lucida Console", monospace);
    font-size: 18px;
    line-height: 1;
    letter-spacing: 0.04em;
    text-align: center;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .achievement-hover-info {
    position: absolute;
    inset: 10px;
    z-index: 5;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    padding: 10px;
    border: 2px solid rgba(245,214,117,0.38);
    background:
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 8px),
      rgba(3,4,7,0.94);
    color: #eef4ff;
    font-family: var(--font-pixel-readable, "VT323", "Lucida Console", monospace);
    font-size: 18px;
    line-height: 1.08;
    letter-spacing: 0.035em;
    text-align: left;
    text-shadow: 2px 2px 0 var(--ui-black);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05), 4px 4px 0 rgba(0,0,0,0.34);
    opacity: 0;
    pointer-events: none;
    transform: translateY(6px);
    transition: opacity 0.1s steps(2, end), transform 0.1s steps(2, end);
  }

  .achievement-card:hover .achievement-hover-info,
  .achievement-card:focus .achievement-hover-info {
    opacity: 1;
    transform: translateY(0);
  }

  #achievement-toast-stack {
    position: fixed;
    right: 18px;
    bottom: 18px;
    z-index: 180;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    pointer-events: none;
  }

  .achievement-toast {
    width: min(340px, calc(100vw - 36px));
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border: 8px solid transparent;
    border-image: var(--ui-card-rare-frame) 8 fill stretch;
    background:
      radial-gradient(circle at 0% 0%, rgba(81,241,195,0.16), transparent 56%),
      repeating-linear-gradient(0deg, rgba(255,255,255,0.025) 0 2px, transparent 2px 10px),
      rgba(8, 11, 18, 0.98);
    box-shadow: 0 0 0 2px var(--ui-black), 7px 7px 0 rgba(0,0,0,0.42), 0 0 20px rgba(81,241,195,0.14);
    image-rendering: pixelated;
    text-align: left;
    opacity: 0;
    transform: translateX(110%);
    transition: opacity 0.18s steps(3, end), transform 0.18s steps(3, end);
  }

  .achievement-toast.show {
    opacity: 1;
    transform: translateX(0);
  }

  .achievement-toast-icon {
    width: 46px;
    height: 46px;
    flex: 0 0 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid rgba(81,241,195,0.28);
    background: rgba(3,4,7,0.5);
    box-shadow: 3px 3px 0 rgba(0,0,0,0.36);
  }

  .achievement-toast-copy {
    min-width: 0;
  }

  .achievement-toast-kicker {
    color: #8df3da;
    font-family: var(--font-pixel-display);
    font-size: 9px;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .achievement-toast-name {
    margin-top: 4px;
    color: #fff2b5;
    font-family: var(--font-pixel-display);
    font-size: 13px;
    line-height: 1.15;
    text-transform: uppercase;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  .achievement-toast-reward {
    margin-top: 4px;
    color: #dfe7f5;
    font-family: var(--font-pixel-readable, "VT323", "Lucida Console", monospace);
    font-size: 18px;
    line-height: 1;
    letter-spacing: 0.035em;
    text-shadow: 2px 2px 0 var(--ui-black);
  }

  @media (max-width: 560px) {
    .btn.achievements-corner-btn {
      left: 12px;
      bottom: 12px;
      min-width: 128px;
      font-size: 11px;
      padding: 8px 12px;
    }

    #achievements-screen .achievements-panel,
    .confirm-panel {
      padding: 18px 14px 20px;
    }

    .achievements-scroll {
      max-height: 62vh;
      padding: 10px;
    }

    .achievements-grid {
      grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
      gap: 10px;
    }

    .achievement-card {
      min-height: 160px;
      padding: 12px 10px 10px;
    }

    .achievement-hover-info,
    .confirm-warning,
    .save-reset-note,
    .achievement-card-progress,
    .achievement-toast-reward {
      font-size: 16px;
    }

    #achievement-toast-stack {
      right: 12px;
      bottom: 12px;
    }
  }



/* Main-menu language selector: top-left pixel flag dropdown */
#start-screen .language-settings {
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  padding: 0;
  image-rendering: pixelated;
  text-align: left;
}

.language-toggle,
.language-option {
  border: 8px solid transparent;
  border-image: var(--ui-button-frame) 8 fill stretch;
  border-radius: 0;
  background: rgba(9, 10, 16, 0.96);
  color: var(--ui-bone);
  box-shadow: 0 0 0 2px var(--ui-black), 5px 5px 0 rgba(0,0,0,0.45);
  font-family: var(--font-pixel-display, "Silkscreen", "Lucida Console", monospace);
  text-shadow: 2px 2px 0 var(--ui-black);
  image-rendering: pixelated;
  cursor: pointer;
}

.language-toggle {
  min-width: 92px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 6px 10px;
  font-size: 12px;
  line-height: 1;
  transition: transform 0.08s steps(2, end), filter 0.08s steps(2, end), box-shadow 0.08s steps(2, end);
}

.language-toggle:hover,
.language-toggle:focus-visible,
.language-option:hover,
.language-option:focus-visible {
  color: #fff2b5;
  filter: brightness(1.16);
  transform: translate(-1px, -1px);
  outline: none;
}

.language-settings.open .language-toggle,
.language-toggle[aria-expanded="true"] {
  color: var(--ui-black);
  background: var(--ui-gold);
  text-shadow: none;
  box-shadow: 0 0 0 2px var(--ui-black), 4px 4px 0 rgba(0,0,0,0.5), 0 0 12px rgba(245,214,117,0.28);
}

.lang-caret {
  display: inline-block;
  margin-left: 1px;
  font-size: 11px;
  transform: translateY(-1px);
}

.language-settings.open .lang-caret {
  transform: translateY(1px) rotate(180deg);
}

.language-menu {
  min-width: 188px;
  margin-top: 8px;
  padding: 7px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: 8px solid transparent;
  border-image: var(--ui-panel-frame) 8 fill stretch;
  background: rgba(5, 6, 10, 0.98);
  box-shadow: 0 0 0 2px var(--ui-black), 7px 7px 0 rgba(0,0,0,0.5);
}

.language-menu[hidden] {
  display: none;
}

.language-option {
  width: 100%;
  min-height: 38px;
  display: grid;
  grid-template-columns: 22px 34px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 5px 9px;
  font-size: 11px;
  line-height: 1;
  text-align: left;
}

.language-option.active {
  color: var(--ui-black);
  background: var(--ui-gold);
  text-shadow: none;
}

.language-option .lang-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pixel-flag {
  position: relative;
  width: 20px;
  height: 14px;
  flex: 0 0 20px;
  border: 2px solid var(--ui-black);
  box-shadow: 2px 2px 0 rgba(0,0,0,0.45);
  image-rendering: pixelated;
  overflow: hidden;
}

.current-language-flag {
  width: 22px;
  height: 15px;
  flex-basis: 22px;
}

.flag-en {
  background: #e8edf6;
}

.flag-en::before,
.flag-en::after {
  content: '';
  position: absolute;
  background: #c92b37;
}

.flag-en::before {
  left: 0;
  right: 0;
  top: 5px;
  height: 3px;
}

.flag-en::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 3px;
}

.flag-es {
  background: linear-gradient(to bottom, #b5122a 0 25%, #ffd65a 25% 75%, #b5122a 75% 100%);
}

.flag-es::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 5px;
  width: 3px;
  height: 4px;
  background: #7b1b18;
  box-shadow: 3px 0 0 #f1d38a;
}

.flag-ru {
  background: linear-gradient(to bottom, #f5f5f5 0 33.33%, #2e5cc5 33.33% 66.66%, #c82d3a 66.66% 100%);
}

@media (max-width: 560px) {
  #start-screen .language-settings {
    top: 10px;
    left: 10px;
  }

  .language-toggle {
    min-width: 78px;
    height: 42px;
    padding: 5px 8px;
    font-size: 10px;
  }

  .language-menu {
    min-width: 166px;
    padding: 6px;
    gap: 5px;
  }

  .language-option {
    min-height: 36px;
    grid-template-columns: 20px 30px minmax(0, 1fr);
    gap: 6px;
    padding: 5px 7px;
    font-size: 10px;
  }

  .pixel-flag {
    width: 18px;
    height: 12px;
  }

  .current-language-flag {
    width: 20px;
    height: 13px;
    flex-basis: 20px;
  }
}

:lang(ru) body,
:lang(ru) button {
  letter-spacing: 0.01em;
}

:lang(ru) .upgrade-desc,
:lang(ru) .upgrade-meta,
:lang(ru) .pi-desc,
:lang(ru) .stat-row,
:lang(ru) .summary-line,
:lang(ru) .achievement-toast-reward,
:lang(ru) .menu-story,
:lang(ru) .save-reset-note,
:lang(ru) .confirm-warning {
  letter-spacing: 0.015em;
}