* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    touch-action: none;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Press Start 2P', cursive;
    background: #1a1a2e;
    -webkit-user-select: none;
    user-select: none;
    overscroll-behavior: none;
}

#scene-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#scene-container canvas {
    display: block;
}

/* Top HUD */
#top-hud {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: env(safe-area-inset-top, 12px) 12px 12px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    pointer-events: none;
    z-index: 100;
}

#left-controls, #right-controls {
    display: flex;
    gap: 8px;
    pointer-events: auto;
}

.hud-btn {
    width: 48px;
    height: 48px;
    border: 3px solid #2d2d44;
    border-radius: 8px;
    background: rgba(26, 26, 46, 0.85);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    box-shadow: 0 4px 0 #0f0f1a, inset 0 1px 0 rgba(255,255,255,0.1);
}

.hud-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #0f0f1a;
}

/* Mode Toggle */
#mode-toggle {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: rgba(26, 26, 46, 0.85);
    border: 3px solid #2d2d44;
    border-radius: 12px;
    pointer-events: auto;
    box-shadow: 0 4px 0 #0f0f1a;
}

.mode-btn {
    width: 52px;
    height: 44px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: #888;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.mode-btn.active {
    background: #4ade80;
    color: #1a1a2e;
    box-shadow: 0 0 12px rgba(74, 222, 128, 0.4);
}

#break-mode.active {
    background: #f87171;
    box-shadow: 0 0 12px rgba(248, 113, 113, 0.4);
}

/* Block Counter */
#block-counter {
    position: fixed;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    padding-top: env(safe-area-inset-top, 0);
    background: rgba(26, 26, 46, 0.75);
    color: #fbbf24;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 8px;
    border: 2px solid #2d2d44;
    z-index: 100;
}

/* Block Palette */
#palette-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px;
    padding-bottom: calc(env(safe-area-inset-bottom, 12px) + 40px);
    background: linear-gradient(to top, rgba(26, 26, 46, 0.95), rgba(26, 26, 46, 0.8));
    border-top: 3px solid #2d2d44;
    z-index: 100;
}

#block-palette {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 8px 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

#block-palette::-webkit-scrollbar {
    display: none;
}

.palette-item {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border: 3px solid #2d2d44;
    border-radius: 8px;
    background: rgba(45, 45, 68, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 3px 0 #0f0f1a;
}

.palette-item:active {
    transform: translateY(2px);
    box-shadow: 0 1px 0 #0f0f1a;
}

.palette-item.selected {
    border-color: #fbbf24;
    box-shadow: 0 0 16px rgba(251, 191, 36, 0.5), 0 3px 0 #0f0f1a;
}

.palette-item canvas {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

/* Footer */
#footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px;
    padding-bottom: env(safe-area-inset-bottom, 8px);
    text-align: center;
    font-size: 6px;
    color: rgba(255, 255, 255, 0.4);
    z-index: 101;
    pointer-events: auto;
}

#footer a {
    color: rgba(251, 191, 36, 0.6);
    text-decoration: none;
}

#footer a:hover {
    color: #fbbf24;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: #1a1a2e;
    border: 4px solid #2d2d44;
    border-radius: 12px;
    padding: 24px 32px;
    text-align: center;
    box-shadow: 0 8px 0 #0f0f1a;
}

.modal-content p {
    color: #fff;
    font-size: 10px;
    margin-bottom: 20px;
}

.modal-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.modal-btn {
    padding: 12px 24px;
    border: 3px solid #2d2d44;
    border-radius: 8px;
    font-family: 'Press Start 2P', cursive;
    font-size: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 4px 0 #0f0f1a;
}

.modal-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #0f0f1a;
}

.modal-btn.yes {
    background: #f87171;
    color: #fff;
}

.modal-btn.no {
    background: #4ade80;
    color: #1a1a2e;
}

/* Animations */
@keyframes pop {
    0% { transform: scale(0.5); }
    70% { transform: scale(1.1); }
    100% { transform: scale(1); }
}