body, html {
    margin: 0;
    padding: 0;
    background-color: #050505;
    color: rgb(5, 160, 180);
    font-family: monospace;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#hud {
    width: 960px;
    padding: 8px 0 4px 0;
    font-size: 16px;
    letter-spacing: 1px;
    color: rgb(5, 160, 180);
    pointer-events: none;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 16px;
}

#hud button {
    pointer-events: all;
    font-size: 12px;
    padding: 5px 14px;
}

canvas {
    display: block;
    background-color: black;
    border: 2px solid rgba(5, 160, 180, 0.3);
}

#debug-bar {
    width: 960px;
    display: flex;
    flex-direction: row;
    gap: 16px;
    padding: 6px 0;
    flex-shrink: 0;
}

#debug-player {
    margin: 0;
    padding: 6px 10px;
    background: rgba(0,0,0,0.75);
    font-size: 14px;
    font-family: monospace;
    line-height: 1.4;
    color: #ffff00;
    flex: 0 0 auto;
}

#debug-enemy {
    margin: 0;
    padding: 6px 10px;
    background: rgba(0,0,0,0.75);
    font-size: 14px;
    font-family: monospace;
    line-height: 1.4;
    color: #00ffcc;
    flex: 1;
}

#editor-panel {
    width: 960px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 6px 0;
    flex-shrink: 0;
}

#editor-tile-row {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

#editor-action-row {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

#editor-action-row button {
    font-size: 12px;
    padding: 5px 14px;
}

#editor-tile-row span {
    font-size: 11px;
    letter-spacing: 1px;
    color: rgb(5, 160, 180);
    margin-right: 4px;
}

#editor-tile-row button[data-tile],
#editor-tile-row #clear-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    font-size: 11px;
}

#editor-panel .tile-preview {
    display: block;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.tile-btn-active {
    background: rgba(5, 160, 180, 0.3);
    border-color: rgb(5, 160, 180);
    color: #fff;
}

#editor {
    position: fixed;
    top: 12px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    pointer-events: none;
    z-index: 10;
}

button {
    pointer-events: all;
    background: transparent;
    border: 1px solid rgb(5, 160, 180);
    color: rgb(5, 160, 180);
    font-family: monospace;
    font-size: 9px;
    padding: 3px 8px;
    cursor: pointer;
    letter-spacing: 1px;
    text-transform: uppercase;
}

button:hover {
    background: rgba(5, 160, 180, 0.15);
}


#level-popup {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #050505;
    border: 2px solid rgb(5, 160, 180);
    padding: 32px 48px;
    text-align: center;
    z-index: 100;
    min-width: 260px;
}

#level-popup-text {
    font-size: 20px;
    letter-spacing: 2px;
    margin-bottom: 24px;
    color: rgb(5, 160, 180);
    text-transform: uppercase;
}

#level-popup-btn {
    font-size: 12px;
    padding: 6px 24px;
    letter-spacing: 2px;
}

/* ── README MODAL ──────────────────────────────────────────── */
#readme-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 200;
    justify-content: center;
    align-items: center;
}

#readme-modal.open {
    display: flex;
}

#readme-modal-inner {
    background: #050505;
    border: 2px solid rgb(5, 160, 180);
    padding: 32px 40px;
    max-width: 560px;
    width: 90%;
    font-family: monospace;
    color: rgb(5, 160, 180);
}

#readme-title {
    font-size: 18px;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 14px;
}

#readme-intro {
    font-size: 12px;
    line-height: 1.7;
    margin: 0 0 20px 0;
    color: rgba(5, 160, 180, 0.85);
}

#readme-intro strong {
    color: rgb(5, 160, 180);
}

.readme-section-title {
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(5, 160, 180, 0.3);
    padding-bottom: 4px;
    margin-bottom: 10px;
    margin-top: 18px;
}

.readme-grid {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 6px 16px;
    font-size: 12px;
    margin-bottom: 4px;
}

.readme-key {
    color: #fff;
    background: rgba(5, 160, 180, 0.15);
    border: 1px solid rgba(5, 160, 180, 0.4);
    padding: 1px 6px;
    font-size: 11px;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
}

.readme-note {
    font-size: 12px;
    line-height: 1.7;
    margin: 0 0 20px 0;
    color: rgba(5, 160, 180, 0.85);
}

.readme-note strong {
    color: rgb(5, 160, 180);
}

#readme-close-btn {
    display: block;
    margin: 24px auto 0;
    font-size: 12px;
    padding: 6px 28px;
    letter-spacing: 2px;
}