@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;600;700&family=Manrope:wght@400;500;600;700&family=Noto+Sans+JP:wght@300;400;600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL,GRAD,opsz@400,0,0,48&display=swap');

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--clr-text-main);
    background-color: var(--clr-bg-surface);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Page load fade-in */
    animation: pageLoad 0.5s ease-out;
}

@keyframes pageLoad {
    from { opacity: 0; }
    to { opacity: 1; }
}

h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.15rem, 2vw, 1.5rem); }

p {
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--clr-primary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* Material Symbols Adjustments */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 48;
    vertical-align: middle;
}

/* Selection color */
::selection {
    background-color: var(--clr-primary-container);
    color: var(--clr-on-primary-container);
}