:root {
    --bg-color: #111111; /* Very dark */
    --text-color: #f8fafc;
    --primary: #555555;
    --primary-hover: #333333;
    --secondary: #222222;
    --danger: #ef4444;
    --success: #10b981;
    --panel-bg: rgba(20, 20, 20, 0.9);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
}

.container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.screen {
    display: none;
    width: 100%;
    height: 100%;
    flex-direction: column;
    padding: 15px;
}

.screen.active {
    display: flex;
}

/* Header & Panels */
.header, .enemy-area, .combat-log, .map-log {
    background: var(--panel-bg);
    border: 1px solid #333;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 10px;
    text-align: center;
}

.map-log {
    font-family: 'VT323', monospace;
    font-size: 18px;
    color: #ffd700;
}

/* Grid Arena */
.grid-arena {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(20, 1fr);
    grid-template-rows: repeat(12, 1fr);
    gap: 0;
    width: 100%;
    max-width: 600px;
    aspect-ratio: 20 / 12;
    background: #000;
    padding: 0;
}

.grid-cell {
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Consolas', 'Courier New', monospace;
    font-size: 24px;
    background: #000;
    color: #fff;
}

.cell-wall { color: #444; }
.cell-player { color: #00ff00; }
.cell-enemy { color: #ff0000; }
.cell-loot { color: #8b5cf6; }
.cell-gold { color: #ffd700; }
.cell-exit { color: #00ffff; }

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* D-Pad */
.dpad {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    gap: 5px;
    padding: 10px;
    max-width: 200px;
    margin: 0 auto;
}

.btn {
    border: 1px solid #444;
    border-radius: 8px;
    padding: 15px;
    font-size: 20px;
    cursor: pointer;
    background: var(--primary);
    color: white;
}
.btn:active { background: var(--primary-hover); }
.btn-secondary { background: var(--secondary); font-size: 14px; }

/* Pixel Sprite using IMG */
.pixel-sprite {
    display: block;
    width: 120px;
    height: 120px;
    margin: 20px auto;
    image-rendering: pixelated;
    animation: float 2s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Health Bars */
.health-bar-container {
    width: 100%;
    height: 12px;
    background: rgba(0,0,0,0.8);
    border: 1px solid #333;
    margin: 5px 0;
}
.health-bar { height: 100%; transition: width 0.3s; }
.bg-green { background: var(--success); }
.bg-red { background: var(--danger); }

/* Combat Log */
.combat-log {
    flex: 1;
    overflow-y: auto;
    font-family: 'VT323', monospace;
    font-size: 18px;
    text-align: left;
}
.combat-log p { margin-bottom: 5px; }

/* Loading & Result */
#loading, #result { justify-content: center; align-items: center; }
#resultTitle { font-size: 40px; margin-bottom: 20px; }