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

:root {
    /* --- UI Theme Colors --- */
    --bg-color: #1e1e2e;
    --card-bg: #2a2a3c;
    --text-main: #e4e4e7;
    --text-muted: #a1a1aa;
    --c-hover: #3f3f5a;
    /* --- Cube Color Palette --- */
    --c-base: #4b5563;
    /* Unoriented Grey */
    --c-white: #f3f4f6;
    --c-yellow: #fcd34d;
    /* Also used as --accent-yellow */
    --c-green: #4ade80;
    --c-blue: #60a5fa;
    --c-red: #f87171;
    --c-orange: #fb923c;
    /* --- Highlights & Accents --- */
    --highlight-pink: #f472b6;
    --highlight-blue: #60a5fa;
    --highlight-green: #4ade80;
    /* --- Default Sizing (Standard 3x3) --- */
    --sticker-size: 8px;
    --gap-size: 4px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
    padding: 2rem;
}

h1 {
    font-weight: 800;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, var(--c-blue), var(--c-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}