/* assets/css/style.css */
@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;700&display=swap');

:root {
    --bg-color: #0a0a0a;
    --text-color: #e0e0e0;
    --accent-color: #b30000;
    --sub-text: #888;
    --font-main: "Shippori Mincho", "MS Mincho", "serif";
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 背景透過Aパターン */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/pci-evidence.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.15;
    z-index: -1;
    filter: grayscale(100%);
    pointer-events: none;
}

header {
    padding: 2.5rem 1rem;
    text-align: center;
    background: rgba(10, 10, 10, 0.85);
    border-bottom: 1px solid #222;
    backdrop-filter: blur(5px);
}

.nav-menu {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.nav-item {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-title {
    font-size: 0.9rem;
    color: var(--text-color);
    letter-spacing: 0.1em;
}

.nav-subtitle {
    font-size: 0.6rem;
    color: var(--sub-text);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-top: 0.2rem;
}

.nav-item:hover .nav-title {
    color: var(--accent-color);
    text-shadow: 0 0 8px rgba(179, 0, 0, 0.4);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 1.5rem;
}

h1,
h2,
h3 {
    font-weight: normal;
    letter-spacing: 0.15rem;
    color: var(--text-color);
}

.btn-archive {
    display: inline-block;
    margin-top: 2rem;
    padding: 0.8rem 2rem;
    border: 1px solid var(--sub-text);
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.3s;
    background: rgba(255, 255, 255, 0.05);
}

.btn-archive:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
}

/* 地下室への隠しアイコン */
.cellar-trigger {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    font-size: 24px;
    opacity: 0.15;
    transition: 0.5s;
    cursor: pointer;
    z-index: 100;
}

.cellar-trigger:hover {
    opacity: 0.8;
    filter: drop-shadow(0 0 8px var(--accent-color));
}

footer {
    padding: 4rem 1rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--sub-text);
}

@media (max-width: 600px) {
    .nav-menu {
        gap: 1rem;
    }
}