:root {
    --bg-dark: #05050a;
    --bg-panel: rgba(15, 20, 30, 0.7);
    --neon-blue: #00f0ff;
    --neon-pink: #ff003c;
    --neon-yellow: #fcee0a;
    --text-main: #e0e6ed;
    --text-muted: #6b7280;
    --grid-color: rgba(0, 240, 255, 0.1);
    
    --border-glow: 0 0 10px rgba(0, 240, 255, 0.5), inset 0 0 10px rgba(0, 240, 255, 0.2);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    overflow: hidden;
    /* Basic CRT scanline effect via background repeating linear-gradient */
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.05) 50%, rgba(0, 0, 0, 0.15) 50%),
        linear-gradient(90deg, rgba(255,0,0,0.03), rgba(0,255,0,0.01), rgba(0,0,255,0.03));
    background-size: 100% 4px, 6px 100%;
}

#game-container {
    width: 100vw;
    height: 100vh;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.screen {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.screen.hidden {
    display: none;
}

header {
    background: var(--bg-panel);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neon-blue);
    padding: 1rem 2rem;
    box-shadow: var(--border-glow);
    z-index: 10;
}

header h1 {
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--neon-blue);
    text-shadow: 0 0 8px var(--neon-blue);
    font-size: 1.5rem;
    margin: 0;
}

.builder-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Side Panels */
aside {
    width: 300px;
    background: var(--bg-panel);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(0, 240, 255, 0.2);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    z-index: 5;
}

aside.stats-panel {
    border-right: none;
    border-left: 1px solid rgba(0, 240, 255, 0.2);
}

aside h3 {
    color: var(--neon-yellow);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--neon-yellow);
    padding-bottom: 0.5rem;
}

.part-selector {
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-left: 3px solid var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.part-selector:hover {
    background: rgba(0, 240, 255, 0.1);
    border-left-color: var(--neon-blue);
}

.part-selector.active {
    background: rgba(0, 240, 255, 0.2);
    border-left-color: var(--neon-blue);
    color: var(--neon-blue);
    text-shadow: 0 0 5px var(--neon-blue);
}

.part-selector.special {
    border-left-color: var(--neon-pink);
}

.part-selector.special.active {
    background: rgba(255, 0, 60, 0.2);
    border-left-color: var(--neon-pink);
    color: var(--neon-pink);
    text-shadow: 0 0 5px var(--neon-pink);
}

.shape-palette {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-bottom: 1rem;
}

.shape-palette h4 {
    grid-column: span 4;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.shape-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.3);
    color: var(--text-main);
    font-size: 0.7rem;
    padding: 0.5rem 0;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.shape-btn:hover {
    background: rgba(0, 240, 255, 0.2);
    border-color: var(--neon-blue);
}

hr {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin: 1rem 0;
}

/* Center Canvas */
.canvas-container {
    flex: 1;
    position: relative;
    background: radial-gradient(circle at center, #0f172a 0%, #020617 100%);
    overflow: hidden;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

#builder-canvas {
    width: 100%;
    height: 100%;
    cursor: crosshair;
}

/* Stats */
.stat-block {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    background: rgba(0,0,0,0.3);
    padding: 0.5rem;
    border-radius: 4px;
}

.mt-4 { margin-top: 1.5rem; }
.mt-auto { margin-top: auto; }

.stat-block .label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.stat-block .value {
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: var(--neon-blue);
}

.text-warning { color: var(--neon-yellow) !important; }

/* Buttons */
.action-btn {
    padding: 1rem;
    margin-bottom: 0.5rem;
    background: transparent;
    border: 1px solid var(--neon-blue);
    color: var(--neon-blue);
    font-weight: bold;
    letter-spacing: 2px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.action-btn:hover:not(:disabled) {
    background: var(--neon-blue);
    color: #000;
    box-shadow: 0 0 15px var(--neon-blue);
}

.action-btn:disabled {
    border-color: var(--text-muted);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.5;
}

.battle-btn {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
}

.battle-btn:hover:not(:disabled) {
    background: var(--neon-pink);
    color: #fff;
    box-shadow: 0 0 15px var(--neon-pink);
}

/* Utils */
.text-glitch {
    position: relative;
}