:root {
    --color-primary: #FFEA00;
    --color-secondary: #FF0099;
    --color-accent: #00E5FF;
    --color-dark: #1a1a1a;
}

html,
body {
    font-family: 'Zen Kaku Gothic New', sans-serif;
    background-color: #f0f0f0;
    /* 少し落ち着いた背景色に変更 */
    color: var(--color-dark);
    overflow-x: hidden;
    width: 100%;
}

h1,
h2,
h3,
.display-font {
    font-family: 'Dela Gothic One', cursive;
    letter-spacing: -0.05em;
}

.code-font {
    font-family: 'VT323', monospace;
}

/* Brutalist Style Elements */
.brutal-border {
    border: 4px solid #000;
}

.brutal-shadow {
    box-shadow: 8px 8px 0px 0px #000;
    border: 4px solid #000;
    transition: all 0.2s ease;
}

.brutal-shadow:hover {
    transform: translate(-2px, -2px);
    box-shadow: 12px 12px 0px 0px #000;
}

.brutal-tag {
    background: #000;
    color: #fff;
    padding: 2px 8px;
    font-family: 'VT323', monospace;
    font-size: 1.1rem;
}

/* Navigation */
.nav-link:hover {
    background-color: #000;
    color: var(--color-primary);
}

/* Image Placeholder Pattern */
.img-placeholder {
    background-color: #ddd;
    background-image:
        linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc),
        linear-gradient(45deg, #ccc 25%, transparent 25%, transparent 75%, #ccc 75%, #ccc);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
    font-weight: bold;
    font-family: 'VT323', monospace;
    font-size: 1.5rem;
    position: relative;
    overflow: hidden;
}

.img-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    opacity: 0;
    transition: opacity 0.3s;
}

.img-placeholder:hover::after {
    opacity: 1;
}

/* Sticky Project Info */
.sticky-info {
    position: sticky;
    top: 100px;
}