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

:root {
    --green:      #00FF41;
    --green-dim:  #007a1f;
    --yellow:     #FFD700;
    --red:        #FF3131;
    --blue:       #00BFFF;
    --bg:         #0a0a0a;
    --panel:      #111111;
    --card:       #1a1a1a;
    --border:     #2a2a2a;
    --text:       #cccccc;
}

body {
    background: var(--bg);
    color: var(--green);
    font-family: 'Share Tech Mono', 'Courier New', monospace;
    min-height: 100vh;
    overflow: auto;
}

.screen {
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hidden { display: none !important; }

.login-box {
    background: var(--panel);
    border: 2px solid var(--green);
    border-radius: 2px;
    padding: 48px 40px;
    width: 440px;
    max-width: 95vw;
    text-align: center;
    box-shadow:
        0 0 40px rgba(0,255,65,0.25),
        0 0 80px rgba(0,255,65,0.08);
}

.logo-area {
    margin-bottom: 20px;
}

.tank-icon {
    font-size: 48px;
    line-height: 1;
    filter: drop-shadow(0 0 12px rgba(0,255,65,0.8));
}

.logo-title {
    font-family: 'Press Start 2P', monospace;
    font-size: 22px;
    color: var(--green);
    text-shadow: 0 0 20px var(--green);
    letter-spacing: 4px;
    margin: 12px 0 6px;
}

.logo-sub {
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    color: var(--yellow);
    text-shadow: 0 0 10px var(--yellow);
    letter-spacing: 3px;
}

.tagline {
    color: var(--green-dim);
    font-size: 12px;
    margin: 16px 0 28px;
}

.input-group {
    text-align: left;
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 13px;
    color: var(--green);
    margin-bottom: 8px;
}

.input-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--green);
    border-radius: 2px;
    color: var(--green);
    font-family: 'Share Tech Mono', monospace;
    font-size: 16px;
    outline: none;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.input-group input:focus {
    border-color: #00ff80;
    box-shadow: 0 0 12px rgba(0,255,65,0.5);
}

.input-group input::placeholder {
    color: var(--green-dim);
}

.btn-neon {
    background: transparent;
    border: 2px solid var(--green);
    color: var(--green);
    padding: 12px 32px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 15px;
    cursor: pointer;
    letter-spacing: 2px;
    transition: all 0.18s ease;
    display: inline-block;
    margin: 8px 0;
}

.btn-neon:hover {
    background: var(--green);
    color: var(--bg);
    box-shadow: 0 0 24px rgba(0,255,65,0.7);
    transform: scale(1.03);
}

.btn-neon:active {
    transform: scale(0.98);
}

.room-share {
    margin: 16px 0;
    padding: 12px;
    border: 1px solid var(--green-dim);
    background: rgba(0,255,65,0.04);
    text-align: left;
}

.room-label {
    font-size: 12px;
    color: var(--green-dim);
    margin-bottom: 8px;
}

.room-code-val {
    color: var(--yellow);
    font-family: 'Press Start 2P', monospace;
    font-size: 11px;
    letter-spacing: 2px;
}

.share-row {
    display: flex;
    gap: 6px;
    margin-bottom: 6px;
}

.share-input {
    flex: 1;
    padding: 6px 8px;
    background: var(--bg);
    border: 1px solid var(--green-dim);
    color: var(--green-dim);
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    outline: none;
    min-width: 0;
}

.btn-copy {
    background: transparent;
    border: 1px solid var(--green-dim);
    color: var(--green-dim);
    padding: 6px 10px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
}

.btn-copy:hover {
    border-color: var(--green);
    color: var(--green);
}

.room-hint {
    font-size: 10px;
    color: #444;
}

.controls-hint {
    margin-top: 28px;
    font-size: 12px;
    color: var(--green-dim);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.controls-hint strong {
    color: var(--green);
}

.version-tag {
    margin-top: 20px;
    font-size: 9px;
    color: #333;
}

.game-layout {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 14px;
    padding: 12px;
    min-height: 100vh;
    width: 100%;
}

.arena-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.arena-title {
    font-family: 'Press Start 2P', monospace;
    font-size: 10px;
    color: var(--yellow);
    text-shadow: 0 0 10px var(--yellow);
    letter-spacing: 2px;
    text-align: center;
    white-space: nowrap;
}

#game-canvas {
    border: 2px solid var(--green);
    box-shadow:
        0 0 24px rgba(0,255,65,0.35),
        0 0 2px rgba(0,255,65,0.8);
    display: block;
    image-rendering: pixelated;
}

.status-bar {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 6px 16px;
    font-size: 11px;
    color: var(--green);
    width: 100%;
    text-align: center;
    letter-spacing: 1px;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 180px;
    flex-shrink: 0;
    padding-top: 28px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 12px;
}

.panel-title {
    font-family: 'Press Start 2P', monospace;
    font-size: 7px;
    color: var(--yellow);
    letter-spacing: 1px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
    margin-bottom: 10px;
}

.sb-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 4px;
    margin: 3px 0;
    font-size: 11px;
    border-left: 3px solid transparent;
    gap: 4px;
}

.sb-me { background: rgba(0,255,65,0.06); }
.sb-nick { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sb-lives { color: var(--red); font-size: 10px; }
.sb-status { font-size: 12px; }
.sb-stats {
    font-size: 9px;
    color: var(--text);
    white-space: nowrap;
}
.sb-crown { margin-right: 2px; }

.pu-swatch {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    font-size: 11px;
    border-radius: 50%;
    border: 1px solid;
}
.pu-shield { color: #00e5ff; border-color: #00e5ff; box-shadow: 0 0 6px rgba(0,229,255,0.5); }
.pu-medkit { color: #ff3b3b; border-color: #ff3b3b; box-shadow: 0 0 6px rgba(255,59,59,0.5); }
.pu-rapid  { color: #ffb300; border-color: #ffb300; box-shadow: 0 0 6px rgba(255,179,0,0.5); }

.ctrl-row {
    font-size: 11px;
    color: var(--text);
    margin: 5px 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

kbd {
    background: var(--bg);
    border: 1px solid var(--green);
    padding: 1px 5px;
    font-size: 10px;
    color: var(--green);
    border-radius: 2px;
    font-family: 'Share Tech Mono', monospace;
}

.legend-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--text);
    margin: 5px 0;
}

.swatch {
    width: 14px;
    height: 14px;
    display: inline-block;
    flex-shrink: 0;
}
.swatch-wall  { background: #888; border: 1px solid #aaa; }
.swatch-brick { background: #cc4400; border: 1px solid #ff6622; }

.rule-row, .tech-row {
    font-size: 11px;
    color: var(--text);
    margin: 5px 0;
}

.notification {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%) translateY(-80px);
    background: var(--panel);
    border: 1px solid var(--green);
    color: var(--green);
    padding: 10px 24px;
    font-size: 13px;
    border-radius: 2px;
    box-shadow: 0 0 16px rgba(0,255,65,0.4);
    transition: transform 0.3s ease;
    z-index: 100;
    pointer-events: none;
    white-space: nowrap;
}

.notification.show {
    transform: translateX(-50%) translateY(0);
}

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.88);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.overlay-box {
    background: var(--panel);
    border: 2px solid var(--yellow);
    padding: 56px 48px;
    text-align: center;
    box-shadow: 0 0 50px rgba(255,215,0,0.3);
}

.winner-text {
    font-family: 'Press Start 2P', monospace;
    font-size: 18px;
    color: var(--yellow);
    text-shadow: 0 0 20px var(--yellow);
    margin-bottom: 36px;
    line-height: 1.7;
}

.overlay-hint {
    margin-top: 16px;
    font-size: 11px;
    color: var(--green-dim);
}

.lobby-title {
    font-family: 'Press Start 2P', monospace;
    font-size: 15px;
    color: var(--green);
    text-shadow: 0 0 16px var(--green);
    margin-bottom: 24px;
    letter-spacing: 2px;
}

.lobby-players {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 260px;
    margin-bottom: 24px;
}

.lobby-player-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--card);
    border-left: 3px solid transparent;
    font-size: 13px;
    text-align: left;
}

.bot-tag {
    font-family: 'Press Start 2P', monospace;
    font-size: 7px;
    color: var(--blue);
    border: 1px solid var(--blue);
    padding: 2px 5px;
    border-radius: 2px;
    letter-spacing: 1px;
}

.btn-remove-bot {
    margin-left: auto;
    background: transparent;
    border: 1px solid var(--red);
    color: var(--red);
    width: 20px;
    height: 20px;
    line-height: 1;
    border-radius: 2px;
    cursor: pointer;
    font-size: 11px;
    flex-shrink: 0;
}

.btn-remove-bot:hover {
    background: var(--red);
    color: var(--bg);
}

.btn-secondary {
    border-color: var(--blue);
    color: var(--blue);
    font-size: 12px;
    padding: 8px 20px;
    display: block;
    margin: 0 auto 14px;
}

.btn-secondary:hover {
    background: var(--blue);
    color: var(--bg);
    box-shadow: 0 0 24px rgba(0,191,255,0.6);
}

#start-btn:disabled,
#start-btn.disabled,
#add-bot-btn.disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

.gameover-stats {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin: -16px 0 24px;
    font-size: 12px;
    min-width: 220px;
}

.go-stat-row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 4px 10px;
    background: var(--card);
    border-left: 3px solid transparent;
}

.ad-panel {
    /* trochę bledszy panel niż reszta UI — wizualnie odseparowany jako "nie-gra" */
    opacity: 0.9;
}

.ad-slot {
    position: relative;
    min-height: 200px;
    width: 100%;
    overflow: hidden;
    border: 1px dashed var(--border);
    background: rgba(255,255,255,0.02);
}

.ad-slot .adsbygoogle {
    position: relative;
    z-index: 1;
}

.ad-placeholder {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 10px;
    line-height: 1.6;
    color: #3a3a3a;
    pointer-events: none;
}

.ad-placeholder span {
    font-size: 9px;
    color: #2a2a2a;
}

@media (max-width: 960px) {
    .sidebar { display: none; }
}