/* battle.css — battle screen, battlefield, Core, enemies, HP bar, upgrade panel, projectiles */

  /* ==================== BATTLE ==================== */
  #screen-battle { flex: 1; display: none; flex-direction: column; min-height: 0; }
  #screen-battle.active { display: flex; }

  .status {
    padding: 8px 10px 6px;
    background: linear-gradient(180deg, rgba(10,14,24,0.7), rgba(10,14,24,0.3));
    border-bottom: 1px solid var(--accent-dim);
    flex-shrink: 0;
  }

  /* HP bar — big pink styled bar with shaped ends and center overlay */
  .hp-bar-wrap {
    padding: 0 4px;
    margin-bottom: 6px;
  }
  .hp-bar {
    position: relative;
    height: 22px;
    background: rgba(221, 34, 68, 0.15);
    border: 1px solid var(--danger);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 0 calc(var(--glow-on) * 8px) rgba(221,34,68,0.4);
    /* Chevron-shaped ends via clip-path */
    clip-path: polygon(
      6px 0, calc(100% - 6px) 0, 100% 50%,
      calc(100% - 6px) 100%, 6px 100%, 0 50%
    );
  }
  .hp-fill {
    position: absolute; inset: 0;
    height: 100%;
    background: linear-gradient(90deg, #ff3366, #ff6688, #ff8aaa);
    transition: width 0.15s;
    box-shadow: inset 0 0 12px rgba(255,100,150,0.5);
  }
  .hp-icon {
    position: absolute; left: 10px; top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 12px;
    text-shadow: 0 0 4px rgba(0,0,0,0.8);
    z-index: 2;
  }
  .hp-text {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 11px; font-weight: bold;
    color: white;
    text-shadow: 0 0 4px rgba(0,0,0,0.8), 0 1px 2px rgba(0,0,0,0.8);
    z-index: 2;
    letter-spacing: 0.5px;
  }

  /* Status icon grid — Tier | Wave | Cash | Kills */
  .status-grid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(20,26,40,0.55);
    border: 1px solid var(--accent-dim);
    border-radius: 5px;
    padding: 6px 4px;
    margin-bottom: 6px;
    gap: 2px;
  }
  .status-cell {
    display: flex; align-items: center; gap: 4px;
    padding: 0 4px;
    flex: 1;
    justify-content: center;
    min-width: 0;
  }
  .status-icon {
    font-size: 13px;
    line-height: 1;
    filter: drop-shadow(0 0 3px currentColor);
  }
  .status-label {
    font-size: 8px; color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: bold;
  }
  .status-val {
    font-size: 10px; color: var(--text);
    font-weight: bold;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .status-divider {
    width: 1px; height: 16px;
    background: var(--accent-dim);
    flex-shrink: 0;
  }

  /* End-run gold pill */
  .coin-banner-pill {
    display: flex; align-items: center; justify-content: center;
    gap: 6px;
    background: linear-gradient(180deg, rgba(255,204,0,0.12), rgba(255,170,68,0.08));
    border: 1px solid var(--gold);
    border-radius: 20px;
    padding: 6px 10px;
    font-size: 10px;
    font-weight: bold;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 0 calc(var(--glow-on) * 6px) rgba(255,204,0,0.3);
  }
  .coin-banner-pill b {
    color: var(--gold);
    font-size: 14px;
    text-shadow: 0 0 calc(var(--glow-on) * 4px) var(--gold);
  }
  .banner-arrow {
    color: var(--gold);
    font-size: 12px;
  }
  .banner-coin-icon {
    color: var(--gold);
    font-size: 14px;
    filter: drop-shadow(0 0 3px var(--gold));
  }

  /* Battlefield wrapper with left/right side buttons */
  .battlefield-wrap {
    position: relative;
    flex: 1;
    display: flex;
    min-height: 0;
  }
  .bf-side {
    position: absolute;
    top: 75%;
    transform: translateY(-50%);
    z-index: 5;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .bf-side-left { left: 6px; }
  .bf-side-right { right: 6px; }
  .bf-side-btn {
    background: rgba(20,26,40,0.85);
    border: 1px solid var(--accent-dim);
    border-radius: 8px;
    color: var(--accent);
    padding: 8px 6px;
    min-width: 44px;
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    display: flex; flex-direction: column; align-items: center;
    gap: 2px;
    backdrop-filter: blur(4px);
    box-shadow: 0 0 calc(var(--glow-on) * 6px) rgba(0,240,255,0.2);
  }
  .bf-side-btn:active {
    transform: scale(0.94);
    background: var(--accent-deep);
  }
  .bf-side-icon {
    font-size: 14px; line-height: 1;
  }
  .bf-side-value {
    font-size: 9px;
    letter-spacing: 0.5px;
  }

  .live-stats {
    background: var(--panel);
    border-bottom: 1px solid var(--accent-dim);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    flex-shrink: 0;
  }
  .live-stats.open { max-height: 40vh; padding: 8px; overflow-y: auto; }
  .live-stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; font-size: 10px; }
  .live-stat-cell { background: var(--panel-2); border: 1px solid var(--accent-dim); border-radius: 4px; padding: 5px 6px; }
  .live-stat-label { color: var(--muted); font-size: 8px; text-transform: uppercase; letter-spacing: 1px; }
  .live-stat-val { color: var(--accent); font-weight: bold; font-size: 11px; }
  .live-stat-val.gold { color: var(--gold); }
  .live-stat-val.good { color: var(--good); }
  .live-stat-val.danger { color: var(--danger); }
  .live-stats-title {
    font-size: 10px; color: var(--accent); font-weight: bold;
    margin: 8px 0 4px; text-transform: uppercase; letter-spacing: 1px;
  }
  .live-stats-title:first-child { margin-top: 0; }

  .battlefield {
    flex: 1;
    position: relative;
    background: radial-gradient(ellipse at 50% 72%, var(--panel) 0%, var(--bg) 65%), var(--bg);
    overflow: hidden;
    touch-action: none;
    min-height: 0;
  }
  .tower {
    position: absolute;
    width: 44px; height: 44px;
    transform: translate(-50%, -50%);
    z-index: 5;
    pointer-events: none;
  }
  .tower-base {
    position: absolute; inset: 0;
    background: radial-gradient(circle at 50% 50%, var(--accent) 0%, var(--accent-dim) 60%, var(--accent-deep) 100%);
    border: 2px solid var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 calc(var(--glow-on) * 14px) var(--accent), inset 0 0 10px rgba(255,255,255,0.3);
  }
  .tower-core {
    position: absolute; inset: 10px;
    background: var(--text); border-radius: 50%; opacity: 0.8;
    animation: corepulse 1.8s ease-in-out infinite;
  }
  @keyframes corepulse {
    0%, 100% { opacity: 0.6; transform: scale(0.85); }
    50% { opacity: 1; transform: scale(1.05); }
  }
  .range-ring {
    position: absolute;
    border: 1px dashed var(--accent);
    border-radius: 50%;
    opacity: 0.15;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 2;
    transition: width 0.3s, height 0.3s;
  }

  .enemy {
    position: absolute;
    width: 16px; height: 16px;
    background: var(--danger);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    box-shadow: 0 0 calc(var(--glow-on) * 5px) var(--danger);
    will-change: transform;
    transform: translate(-50%, -50%);
    pointer-events: none;
  }
  .enemy.fast { background: var(--gold); box-shadow: 0 0 calc(var(--glow-on) * 6px) var(--gold); width: 12px; height: 12px; }
  .enemy.tank { background: var(--purple); box-shadow: 0 0 calc(var(--glow-on) * 8px) var(--purple); width: 22px; height: 22px; }
  .enemy.shooter { background: var(--cyan2); box-shadow: 0 0 calc(var(--glow-on) * 7px) var(--cyan2); width: 16px; height: 16px; border-radius: 3px; }
  .enemy.elite { background: var(--text); border-color: var(--gold); box-shadow: 0 0 calc(var(--glow-on) * 10px) var(--gold); width: 20px; height: 20px; }
  .enemy.augmenter {
    background: var(--good);
    border: 2px solid var(--good);
    width: 20px; height: 20px;
    border-radius: 4px;
    box-shadow: 0 0 calc(var(--glow-on) * 8px) var(--good),
                0 0 calc(var(--glow-on) * 24px) rgba(68,255,136,0.4);
    animation: aug-pulse 1.5s ease-in-out infinite;
  }
  @keyframes aug-pulse {
    0%, 100% { box-shadow: 0 0 calc(var(--glow-on) * 8px) var(--good), 0 0 calc(var(--glow-on) * 24px) rgba(68,255,136,0.4); }
    50% { box-shadow: 0 0 calc(var(--glow-on) * 12px) var(--good), 0 0 calc(var(--glow-on) * 40px) rgba(68,255,136,0.6); }
  }
  .enemy.buffed {
    box-shadow: 0 0 calc(var(--glow-on) * 8px) var(--good), 0 0 calc(var(--glow-on) * 3px) var(--good) inset !important;
  }
  .enemy.boss {
    background: var(--purple);
    border: 2px solid var(--gold);
    box-shadow: 0 0 calc(var(--glow-on) * 14px) var(--purple);
    width: 48px; height: 48px;
    animation: boss-pulse 1.5s ease-in-out infinite;
  }
  @keyframes boss-pulse {
    0%, 100% { box-shadow: 0 0 calc(var(--glow-on) * 10px) var(--purple); }
    50% { box-shadow: 0 0 calc(var(--glow-on) * 20px) var(--gold); }
  }
  .enemy-hp { position: absolute; bottom: -7px; left: 50%; transform: translateX(-50%); height: 2px; width: 18px; background: rgba(0,0,0,0.6); border-radius: 1px; }
  .enemy.boss .enemy-hp { bottom: -10px; width: 52px; height: 4px; }
  .enemy-hp-fill { height: 100%; background: var(--good); border-radius: 1px; }

  .projectile { position: absolute; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 calc(var(--glow-on) * 5px) var(--accent); will-change: transform; transform: translate(-50%, -50%); pointer-events: none; }
  .projectile.crit { background: var(--gold); box-shadow: 0 0 calc(var(--glow-on) * 8px) var(--gold); width: 8px; height: 8px; }
  .projectile.bounce { background: var(--purple); box-shadow: 0 0 calc(var(--glow-on) * 7px) var(--purple); }
  .projectile.enemy { background: var(--cyan2); box-shadow: 0 0 calc(var(--glow-on) * 5px) var(--cyan2); width: 5px; height: 5px; }

  .focus-marker {
    position: absolute; width: 50px; height: 50px;
    border: 2px solid var(--accent); border-radius: 50%;
    transform: translate(-50%, -50%); pointer-events: none;
    animation: focus-pulse 0.6s ease-out forwards;
  }
  @keyframes focus-pulse {
    0% { opacity: 1; transform: translate(-50%, -50%) scale(0.3); }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(1.5); }
  }
  .float-text {
    position: absolute;
    font-size: 9px; font-weight: bold;
    text-shadow: 0 0 3px black, 0 0 5px black;
    pointer-events: none;
    animation: float-up 0.6s ease-out forwards;
    transform: translate(-50%, -50%);
    white-space: nowrap;
  }
  .float-text.dmg { color: var(--accent); }
  .float-text.crit { color: var(--gold); font-size: 12px; }
  .float-text.cash { color: var(--gold); }
  .float-text.heal { color: var(--good); }
  .float-text.lifesteal { color: var(--good); font-size: 8px; }
  .float-text.tower-dmg { color: var(--danger); font-size: 11px; }
  @keyframes float-up {
    0% { opacity: 1; transform: translate(-50%, -50%) translateY(0); }
    100% { opacity: 0; transform: translate(-50%, -50%) translateY(-22px); }
  }
  .wave-banner {
    position: absolute; top: 18%; left: 50%; transform: translateX(-50%);
    color: var(--accent); font-size: 26px; font-weight: bold;
    text-shadow: 0 0 calc(var(--glow-on) * 8px) var(--accent);
    pointer-events: none;
    animation: banner-fade 0.9s ease-out forwards;
  }
  .wave-banner.boss {
    color: var(--gold);
    font-size: 30px;
    text-shadow: 0 0 calc(var(--glow-on) * 14px) var(--gold);
  }
  @keyframes banner-fade {
    0% { opacity: 0; transform: translateX(-50%) scale(0.5); }
    25% { opacity: 1; transform: translateX(-50%) scale(1.1); }
    75% { opacity: 1; }
    100% { opacity: 0; transform: translateX(-50%) scale(1); }
  }

  .boss-clear-wave {
    position: absolute; left: 50%; top: 50%;
    transform: translate(-50%, -50%);
    width: 10px; height: 10px;
    border: 2px solid var(--gold);
    border-radius: 50%;
    animation: wave-expand 0.6s ease-out forwards;
    pointer-events: none;
  }
  @keyframes wave-expand {
    0% { width: 10px; height: 10px; opacity: 1; }
    100% { width: 600px; height: 600px; opacity: 0; }
  }

  /* In-run upgrades — tabbed fixed-height panel */
  .upgrades-wrap {
    background: var(--bg-2);
    border-top: 1px solid var(--accent-dim);
    flex-shrink: 0;
    display: flex; flex-direction: column;
    max-height: min(280px, 46vh);
  }
  .upgrade-heal-slot {
    padding: 6px 6px 0 6px;
    display: flex;
    gap: 6px;
    align-items: stretch;
  }
  .upgrade-heal-slot > .upgrade-btn.heal {
    flex: 1;
  }
  .upgrade-bm-btn {
    background: linear-gradient(180deg, rgba(0,240,255,0.15), rgba(0,180,200,0.08));
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 4px 10px;
    border-radius: 8px;
    font-family: inherit;
    font-weight: bold;
    cursor: pointer;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-width: 62px;
    box-shadow: 0 0 calc(var(--glow-on) * 5px) rgba(0,240,255,0.25);
  }
  .upgrade-bm-btn:active { transform: scale(0.96); }
  .upgrade-bm-label {
    font-size: 8px;
    letter-spacing: 1px;
    opacity: 0.75;
  }
  .upgrade-bm-value {
    font-size: 16px;
    font-weight: bold;
    letter-spacing: 0.5px;
  }

  /* Tab bar with colored icons — border-top shows active tab color */
  .upgrade-tabs {
    display: flex;
    gap: 4px;
    padding: 8px 6px 0;
    flex-shrink: 0;
  }
  .upgrade-tab {
    flex: 1;
    background: var(--panel);
    border: 1px solid var(--accent-dim);
    border-top: 2px solid var(--accent-dim);
    color: var(--muted);
    padding: 7px 4px;
    font-family: inherit;
    font-size: 10px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    border-radius: 6px 6px 0 0;
    display: flex; align-items: center; justify-content: center; gap: 4px;
    transition: all 0.15s;
  }
  .upgrade-tab:active { transform: scale(0.97); }
  .upgrade-tab-icon { font-size: 12px; color: var(--tab-color, var(--muted)); }
  .upgrade-tab.active {
    color: var(--tab-color, var(--accent));
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0));
    border-color: var(--tab-color, var(--accent));
    border-top-width: 2px;
    box-shadow: inset 0 1px 0 var(--tab-color, var(--accent));
  }
  .upgrade-tab.active .upgrade-tab-icon { color: var(--tab-color, var(--accent)); }

  .upgrade-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
    padding: 5px 6px 8px;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
  }

  /* Upgrade tile: icon left, data right, progress bar under, cost pill at bottom */
  .upgrade-btn {
    background: linear-gradient(180deg, rgba(30,36,52,0.85), rgba(22,28,44,0.85));
    border: 1px solid var(--accent-dim);
    border-top: 2px solid var(--upg-color, var(--accent-dim));
    border-radius: 8px;
    padding: 6px 6px 5px;
    color: var(--text);
    font-family: inherit;
    cursor: pointer;
    display: flex; flex-direction: column;
    gap: 4px;
    transition: transform 0.1s;
    min-height: 82px;
    position: relative;
    text-align: left;
  }
  .upgrade-btn:active:not(:disabled) {
    transform: scale(0.96);
    background: linear-gradient(180deg, rgba(40,48,68,0.9), rgba(30,36,52,0.9));
  }
  .upgrade-btn:disabled { opacity: 0.45; cursor: not-allowed; }
  .upgrade-btn.affordable {
    box-shadow: 0 0 calc(var(--glow-on) * 5px) var(--upg-color, var(--accent));
  }

  .upgrade-body {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    flex: 1;
  }
  .upgrade-icon {
    width: 26px; height: 26px;
    border-radius: 6px;
    border: 1px solid currentColor;
    background: color-mix(in srgb, currentColor 15%, transparent);
    display: flex; align-items: center; justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
    filter: drop-shadow(0 0 3px currentColor);
  }
  /* Fallback for browsers without color-mix — base translucent panel */
  @supports not (background: color-mix(in srgb, red, blue)) {
    .upgrade-icon { background: rgba(255,255,255,0.06); }
  }
  .upgrade-data {
    flex: 1;
    display: flex; flex-direction: column;
    min-width: 0;
    gap: 1px;
  }
  .upgrade-name {
    font-weight: bold;
    font-size: 9px;
    color: var(--text);
    letter-spacing: 0.5px;
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .upgrade-delta {
    color: var(--upg-color, var(--accent));
    font-size: 10px;
    font-weight: bold;
    line-height: 1.15;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .upgrade-level {
    color: var(--muted);
    font-size: 8px;
    line-height: 1.1;
    letter-spacing: 0.3px;
  }
  .upgrade-prog {
    height: 3px;
    background: rgba(0,0,0,0.35);
    border-radius: 2px;
    overflow: hidden;
    margin: 1px 0;
  }
  .upgrade-prog-fill {
    height: 100%;
    transition: width 0.2s;
    opacity: 0.85;
  }

  .upgrade-cost {
    background: linear-gradient(180deg, rgba(255,204,0,0.12), rgba(255,170,68,0.08));
    border: 1px solid rgba(255,204,0,0.4);
    border-radius: 999px;
    color: var(--gold);
    font-size: 10px;
    font-weight: bold;
    text-align: center;
    padding: 2px 6px;
    display: flex; align-items: center; justify-content: center; gap: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .cost-coin {
    color: var(--gold);
    font-size: 11px;
    filter: drop-shadow(0 0 3px var(--gold));
  }
  .cost-cash {
    color: var(--good);
    font-size: 12px;
    font-weight: bold;
    filter: drop-shadow(0 0 3px var(--good));
  }
  .upgrade-cost {
    /* Cost pills in-run are cash-colored (green) */
    background: linear-gradient(180deg, rgba(102,255,102,0.12), rgba(68,170,68,0.08)) !important;
    border-color: rgba(102,255,102,0.4) !important;
    color: var(--good) !important;
  }
  .upgrade-heal-cost {
    background: linear-gradient(180deg, rgba(102,255,102,0.12), rgba(68,170,68,0.08)) !important;
    border-color: var(--good) !important;
    color: var(--good) !important;
  }

  /* Heal — wide card variant (spans full width) */
  .upgrade-btn.heal {
    border-top-color: var(--good);
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 8px;
    min-height: 48px;
    padding: 6px 10px;
    text-align: left;
  }
  .upgrade-btn.heal.affordable {
    box-shadow: 0 0 calc(var(--glow-on) * 6px) var(--good);
  }
  .upgrade-heal-icon {
    width: 28px; height: 28px;
    border-radius: 6px;
    border: 1px solid var(--good);
    background: rgba(102,255,102,0.12);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
    filter: drop-shadow(0 0 4px var(--good));
  }
  .upgrade-heal-body {
    display: flex; flex-direction: column; gap: 1px; min-width: 0;
  }
  .upgrade-heal-name {
    font-weight: bold;
    color: var(--good);
    font-size: 12px;
    letter-spacing: 0.5px;
  }
  .upgrade-heal-desc {
    color: var(--muted);
    font-size: 9px;
  }
  .upgrade-heal-delta {
    color: var(--good);
    font-size: 11px;
    font-weight: bold;
    white-space: nowrap;
  }
  .upgrade-heal-cost {
    background: linear-gradient(180deg, rgba(255,204,0,0.12), rgba(255,170,68,0.08));
    border: 1px solid var(--gold);
    border-radius: 999px;
    color: var(--gold);
    font-size: 11px;
    font-weight: bold;
    padding: 4px 10px;
    display: flex; align-items: center; gap: 3px;
    white-space: nowrap;
  }