/*
Theme Name: 抗ウイルス研究会
Theme URI: https://www.box-group.mom/asg/
Author: 一般財団法人抗ウイルス研究会
Description: 一般財団法人抗ウイルス研究会 オリジナルWordPressテーマ
Version: 2.0.0
License: GNU General Public License v2 or later
Text Domain: antivirus-kenkyukai
*/

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
img { max-width: 100%; height: auto; border: 0; vertical-align: bottom; }
a { text-decoration: none; color: inherit; }
ul, li { list-style: none; }

/* ===== Variables ===== */
:root {
    --color-primary:   #1a3a5c;
    --color-accent:    #2e6da4;
    --color-accent-lt: #4a8ec2;
    --color-gold:      #b8965a;
    --color-bg:        #f5f7fa;
    --color-white:     #ffffff;
    --color-text:      #2c2c2c;
    --color-text-sub:  #666666;
    --color-border:    #dde3ec;
    --font-base: 'Noto Sans JP', "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
    --radius: 4px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --transition: 0.25s ease;
}

/* ===== Base ===== */
body {
    font-family: var(--font-base);
    font-size: 15px;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.8;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ===== Header ===== */
#site-header {
    background: var(--color-white);
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
    position: sticky;
    top: 0;
    z-index: 200;
}

#site-header .col-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 40px;
    max-width: 1140px;
    margin: 0 auto;
}

#site-header .col-left img {
    display: block;
    height: 56px;
    width: auto;
}

/* ===== Navigation ===== */
nav#site-nav {
    background: var(--color-primary);
}

nav#site-nav ul {
    display: flex;
    max-width: 1140px;
    margin: 0 auto;
}

nav#site-nav ul li a {
    display: block;
    color: rgba(255,255,255,0.88);
    padding: 13px 28px;
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: 0.06em;
    transition: background var(--transition), color var(--transition);
    position: relative;
}

nav#site-nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%; right: 50%;
    height: 3px;
    background: var(--color-gold);
    transition: left var(--transition), right var(--transition);
}

nav#site-nav ul li a:hover,
nav#site-nav ul li.current-menu-item > a {
    background: rgba(255,255,255,0.08);
    color: #fff;
}

nav#site-nav ul li a:hover::after,
nav#site-nav ul li.current-menu-item > a::after {
    left: 0; right: 0;
}

/* Hamburger */
#navToggle {
    display: none;
    cursor: pointer;
    position: absolute;
    right: 18px;
    top: 18px;
    z-index: 300;
    padding: 6px;
}

#navToggle div {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

#navToggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: transform var(--transition), opacity var(--transition);
}

/* ===== Hero / Fade Slider ===== */
.hero {
    position: relative;
    width: 100%;
    height: 420px;
    overflow: hidden;
    background: var(--color-primary);
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(10,30,60,0.15) 0%,
        rgba(10,30,60,0.45) 100%
    );
}

/* スライダーナビ */
.hero-dots {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.hero-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
    border: none;
}

.hero-dot.active {
    background: var(--color-white);
    transform: scale(1.3);
}

/* ===== Main Wrap ===== */
#wrap {
    flex: 1;
    max-width: 1140px;
    margin: 48px auto;
    padding: 0 30px;
    width: 100%;
}

section { width: 100%; }

/* ===== Section Title ===== */
.section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.04em;
    padding-bottom: 12px;
    border-bottom: 3px solid var(--color-primary);
    margin-bottom: 6px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--color-gold);
}

.section-subtitle {
    font-size: 12px;
    color: var(--color-text-sub);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 32px;
    margin-top: 4px;
}

/* ===== Greeting Card ===== */
.greeting-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 48px;
    margin-bottom: 48px;
    line-height: 2;
    color: var(--color-text);
}

.greeting-card p {
    margin-bottom: 1.2em;
}

.greeting-card p:last-child {
    margin-bottom: 0;
}

/* ===== Back to Top ===== */
.back-top-wrap {
    text-align: right;
    margin: 8px 0 24px;
}

.back-top-wrap a img {
    width: 44px;
    height: 44px;
    opacity: 0.6;
    transition: opacity var(--transition);
}

.back-top-wrap a:hover img { opacity: 1; }

/* ===== Map ===== */
.map-wrap {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.map-wrap iframe {
    width: 100% !important;
    height: 320px;
    border: 0;
    display: block;
}

/* ===== Gaiyo Table ===== */
table.gaiyo {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 32px;
    background: var(--color-white);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    overflow: hidden;
}

table.gaiyo th,
table.gaiyo td {
    border: 1px solid var(--color-border);
    padding: 14px 18px;
    vertical-align: top;
    line-height: 1.8;
    font-size: 14px;
}

table.gaiyo th {
    background: var(--color-primary);
    color: var(--color-white);
    width: 16%;
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: 0.04em;
}

table.gaiyo td {
    background: var(--color-white);
}

table.gaiyo tr:nth-child(even) td {
    background: #fafbfd;
}

.t_small {
    font-size: 11.5px;
    color: var(--color-text-sub);
    display: block;
    margin-top: 2px;
}

/* ===== Link Page ===== */
table.gaiyo td a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

table.gaiyo td a:hover { color: var(--color-primary); }

/* ===== Contact ===== */
.contact-intro {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-gold);
    border-radius: var(--radius);
    padding: 18px 24px;
    margin-bottom: 32px;
    font-size: 14.5px;
    color: var(--color-text);
}

#formWrap {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 48px;
    max-width: 760px;
}

.wpcf7-form p {
    margin-bottom: 22px;
}

.wpcf7-form label {
    display: block;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 7px;
    letter-spacing: 0.03em;
}

.wpcf7-form input[type="text"],
.wpcf7-form input[type="email"],
.wpcf7-form input[type="tel"],
.wpcf7-form textarea {
    width: 100%;
    max-width: 520px;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: var(--font-base);
    color: var(--color-text);
    background: #fafbfd;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.wpcf7-form input:focus,
.wpcf7-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(46,109,164,0.12);
    background: #fff;
}

.wpcf7-form textarea {
    height: 140px;
    resize: vertical;
    max-width: 100%;
}

.wpcf7-form input[type="submit"] {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: 12px 40px;
    font-size: 15px;
    font-family: var(--font-base);
    font-weight: 600;
    letter-spacing: 0.08em;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
}

.wpcf7-form input[type="submit"]:hover {
    background: var(--color-accent);
    transform: translateY(-1px);
}

.required-label {
    color: #c0392b;
    font-size: 11px;
    font-weight: normal;
    margin-left: 6px;
}

/* ===== Generic Page Content ===== */
.entry-content {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 48px;
    margin-bottom: 32px;
}

.entry-content h2 { font-size: 1.3em; margin: 1.2em 0 0.6em; color: var(--color-primary); }
.entry-content h3 { font-size: 1.1em; margin: 1em 0 0.5em; }
.entry-content p  { line-height: 1.9; margin-bottom: 1em; }
.entry-content ul,
.entry-content ol { padding-left: 1.6em; margin-bottom: 1em; }
.entry-content li { list-style: disc; margin-bottom: 5px; }

/* ===== Footer ===== */
#footer-area {
    background: var(--color-primary);
    color: rgba(255,255,255,0.75);
    margin-top: auto;
}

.footer {
    display: flex;
    max-width: 1140px;
    margin: 0 auto;
    padding: 48px 40px 36px;
    gap: 60px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.footer .menu1 { flex: 1; min-width: 220px; }

.footer .menu1 img {
    max-width: 200px;
    margin-bottom: 18px;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer .add {
    font-size: 13px;
    line-height: 2;
    color: rgba(255,255,255,0.65);
}

.footer .menu2 { min-width: 160px; }

.footer .menu2 ul li { margin-bottom: 10px; }

.footer .menu2 ul li a {
    color: rgba(255,255,255,0.65);
    font-size: 13px;
    transition: color var(--transition);
    padding-left: 10px;
    border-left: 2px solid rgba(255,255,255,0.2);
}

.footer .menu2 ul li a:hover { color: #fff; border-left-color: var(--color-gold); }

.footer .menu2 ul li.head2 a {
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    border-left-color: var(--color-gold);
    padding-left: 10px;
}

.site-footer {
    background: rgba(0,0,0,0.25);
    color: rgba(255,255,255,0.45);
    text-align: center;
    font-size: 12px;
    padding: 14px 20px;
    letter-spacing: 0.04em;
}

/* ===== Responsive ===== */
@media screen and (max-width: 768px) {
    #navToggle { display: block; }

    #site-header .col-wrap { padding: 12px 16px; }

    nav#site-nav { display: none; }
    #site-header.openNav nav#site-nav { display: block; }

    nav#site-nav ul { flex-direction: column; }
    nav#site-nav ul li a {
        border-top: 1px solid rgba(255,255,255,0.1);
        padding: 13px 20px;
    }

    .hero { height: 240px; }

    #wrap { margin: 32px auto; padding: 0 16px; }

    .greeting-card,
    #formWrap,
    .entry-content { padding: 24px 20px; }

    table.gaiyo th { width: auto; display: block; white-space: normal; }
    table.gaiyo th, table.gaiyo td { display: block; width: 100%; }

    .footer { flex-direction: column; gap: 28px; padding: 36px 20px 28px; }

    .map-wrap iframe { height: 220px; }

    .wpcf7-form input[type="text"],
    .wpcf7-form input[type="email"],
    .wpcf7-form input[type="tel"],
    .wpcf7-form textarea { max-width: 100%; }
}