/* ===================================
   Starlight Production - VTuber Template
   =================================== */

:root {
    /* カラーパレット - パステル系×夜空テーマ */
    --primary: #7c3aed;
    --primary-light: #a78bfa;
    --primary-dark: #5b21b6;
    --secondary: #ec4899;
    --secondary-light: #f9a8d4;
    --accent: #06b6d4;
    --accent-light: #67e8f9;

    /* 背景色 */
    --bg-dark: #1e1b4b;
    --bg-gradient: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.1);

    /* テキスト */
    --text-white: #ffffff;
    --text-light: #e0e7ff;
    --text-muted: #a5b4fc;

    /* その他 */
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

/* リセット */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Zen Maru Gothic', 'Noto Sans JP', sans-serif;
    background: var(--bg-dark);
    color: var(--text-white);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

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

/* ===================================
   ヘッダー
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(30, 27, 75, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo img {
    height: 40px;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--text-light);
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-light);
    transition: var(--transition);
}

.nav a:hover::after {
    width: 100%;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 50%;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-white);
    transition: var(--transition);
}

/* ヘッダーのクレジットリンク */
.template-credit {
    font-size: 11px;
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 20px;
    opacity: 0.7;
    transition: var(--transition);
    white-space: nowrap;
}

.template-credit:hover {
    opacity: 1;
    color: var(--primary-light);
}

/* ===================================
   ヒーローセクション
   =================================== */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-gradient);
    overflow: hidden;
}

.hero-images {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 10px;
    padding: 80px 20px 20px;
    opacity: 0.5;
}

.hero-img {
    overflow: hidden;
    border-radius: var(--radius);
    position: relative;
}

.hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.hero-img:nth-child(2) img,
.hero-img:nth-child(4) img,
.hero-img:nth-child(6) img {
    object-fit: contain;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.3), rgba(236, 72, 153, 0.3));
}

.hero-img:hover img {
    transform: scale(1.05);
}

/* 奇数番号（背景画像）は少しぼかす */
.hero-img:nth-child(odd) img {
    filter: blur(1px);
    opacity: 0.8;
}
    grid-template-rows: repeat(2, 1fr);
    gap: 10px;
    padding: 80px 20px 20px;
    opacity: 0.3;
}

.hero-img {
    background-size: cover;
    background-position: center;
    border-radius: var(--radius);
    filter: blur(2px);
}

.hero-img.img-1 { background: linear-gradient(135deg, var(--primary), var(--secondary)); }
.hero-img.img-2 { background: linear-gradient(135deg, var(--accent), var(--primary)); }
.hero-img.img-3 { background: linear-gradient(135deg, var(--secondary), var(--accent)); }
.hero-img.img-main {
    grid-column: 2;
    grid-row: 1 / 3;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    filter: none;
    opacity: 0.8;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 20px;
}

.hero-content h1 {
    font-size: clamp(24px, 5vw, 48px);
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 30px;
}

.hero-content h1 span {
    display: block;
    background: linear-gradient(90deg, var(--text-white), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-logo {
    max-width: 300px;
    margin: 0 auto;
}

/* ===================================
   セクション共通
   =================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label-en {
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--primary-light);
    display: block;
}

.section-label-ja {
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--text-muted);
    display: block;
    margin-bottom: 10px;
}

.section-header h2 {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
}

/* ===================================
   PICKUP
   =================================== */
.pickup {
    background: rgba(124, 58, 237, 0.1);
    padding: 30px 0;
}

.pickup .container {
    display: flex;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

.pickup .section-label {
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--primary-light);
    white-space: nowrap;
}

.pickup-item {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
    min-width: 300px;
}

.pickup-date {
    font-size: 14px;
    color: var(--text-muted);
    white-space: nowrap;
}

.pickup-text {
    font-size: 16px;
}

.pickup-item:hover .pickup-text {
    color: var(--primary-light);
}

/* ===================================
   ABOUT
   =================================== */
.about {
    background: var(--bg-gradient);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-lead {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 500;
    margin-bottom: 30px;
    line-height: 1.8;
}

.about-lead span {
    display: block;
}

.about-text p:not(.about-lead) {
    color: var(--text-light);
    font-size: 16px;
}

.about-video {
    position: relative;
    padding-bottom: 56.25%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ===================================
   MEMBER
   =================================== */
.member {
    background: var(--bg-dark);
}

.member-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.member-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.member-card:hover {
    transform: translateY(-10px);
    background: var(--bg-card-hover);
    box-shadow: 0 20px 40px rgba(124, 58, 237, 0.3);
}

.member-image {
    position: relative;
    padding-bottom: 120%;
    overflow: hidden;
}

.member-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.member-card:hover .member-image img {
    transform: scale(1.05);
}

.member-info {
    padding: 20px;
    text-align: center;
}

.member-info h3 {
    font-size: 20px;
    margin-bottom: 5px;
}

.member-name-en {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

.member-social {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 0 20px 20px;
}

.member-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 50%;
    transition: var(--transition);
}

.member-social a:hover {
    background: var(--primary-light);
    transform: scale(1.1);
}

/* ===================================
   YOUTUBE
   =================================== */
.youtube {
    background: linear-gradient(180deg, var(--bg-dark), var(--bg-gradient));
}

.youtube-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.youtube-item {
    text-align: center;
}

.youtube-item iframe {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius);
    margin-bottom: 15px;
}

.youtube-item p {
    font-size: 14px;
    color: var(--text-light);
}

.youtube-channel {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--primary-light);
    font-size: 14px;
    letter-spacing: 0.1em;
}

/* ===================================
   NEWS & SNS
   =================================== */
.news-sns {
    background: var(--bg-dark);
}

.news-sns .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.news-item {
    display: flex;
    gap: 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.news-item:hover {
    background: var(--bg-card-hover);
    transform: translateX(10px);
}

.news-image {
    width: 120px;
    flex-shrink: 0;
    aspect-ratio: 1;
    background: var(--primary);
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
}

.news-date {
    font-size: 12px;
    color: var(--text-muted);
}

.news-category {
    font-size: 12px;
    color: var(--accent-light);
}

.news-title {
    font-size: 15px;
    font-weight: 500;
}

.view-more {
    background: transparent;
    border: 1px solid var(--primary-light);
    color: var(--primary-light);
    padding: 12px 40px;
    border-radius: 30px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.view-more:hover {
    background: var(--primary);
    color: var(--text-white);
}

/* SNS Section */
.sns-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.sns-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.sns-link:hover {
    background: var(--bg-card-hover);
    transform: translateX(10px);
}

.sns-link svg {
    color: var(--primary-light);
}

/* ===================================
   CONTACT
   =================================== */
.contact {
    background: var(--bg-gradient);
}

.contact-desc {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 40px;
    color: var(--text-light);
}

.contact-email {
    text-align: center;
    margin-bottom: 40px;
}

.contact-email h3 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.contact-email p {
    font-size: 18px;
    color: var(--primary-light);
}

.contact-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form-wrapper > h3 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.privacy-link {
    font-size: 13px;
    color: var(--accent-light);
    margin-bottom: 30px;
}

.contact-form {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    margin-bottom: 8px;
}

.form-group .required {
    color: var(--secondary);
    font-size: 12px;
    margin-left: 5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    color: var(--text-white);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    background: rgba(255, 255, 255, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.form-checkbox label {
    font-size: 14px;
    cursor: pointer;
}

.submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 15px;
    background: var(--primary);
    border: none;
    border-radius: var(--radius);
    color: var(--text-white);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--primary-light);
}

.form-note {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 15px;
}

.form-privacy-note {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.form-privacy-note p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.form-privacy-note ul {
    list-style: none;
}

.form-privacy-note li {
    font-size: 12px;
    color: var(--text-muted);
    padding-left: 15px;
    position: relative;
    margin-bottom: 8px;
}

.form-privacy-note li::before {
    content: '・';
    position: absolute;
    left: 0;
}

/* ===================================
   FAQ
   =================================== */
.faq {
    background: var(--bg-dark);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 15px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: transparent;
    border: none;
    color: var(--text-white);
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question svg:first-child {
    color: var(--primary-light);
    flex-shrink: 0;
}

.faq-question span {
    flex: 1;
}

.faq-icon {
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 20px 20px 60px;
}

.faq-item.active .faq-answer {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.faq-answer svg {
    color: var(--secondary-light);
    flex-shrink: 0;
    margin-top: 3px;
}

.faq-answer p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.8;
}

/* ===================================
   フッター
   =================================== */
.footer {
    background: var(--bg-dark);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 50px;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 50%;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-nav,
.footer-sub {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-nav a,
.footer-sub a {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-nav a:hover,
.footer-sub a:hover {
    color: var(--primary-light);
}

.back-to-top {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.back-to-top svg {
    width: 50px;
    height: 50px;
    padding: 13px;
    background: var(--primary);
    border-radius: 50%;
    transition: var(--transition);
}

.back-to-top:hover svg {
    background: var(--primary-light);
    transform: translateY(-5px);
}

.copyright {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
}

.footer-credit {
    display: block;
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 10px;
    opacity: 0.6;
    transition: var(--transition);
}

.footer-credit:hover {
    opacity: 1;
    color: var(--primary-light);
}

/* ===================================
   レスポンシブ
   =================================== */
@media (max-width: 1024px) {
    .member-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .youtube-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-sns .container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 15px 20px;
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-dark);
        padding: 20px;
        gap: 15px;
    }

    .nav.active {
        display: flex;
    }

    .social-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .member-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .youtube-grid {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .news-item {
        flex-direction: column;
    }

    .news-image {
        width: 100%;
        aspect-ratio: 16/9;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    section {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 24px;
    }

    .contact-form {
        padding: 20px;
    }
}