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

/* 基本設定 */
:root {
    /* メインカラー */
    --color-primary: #0288d1;
    --color-primary-light: #03a9f4;
    --color-primary-dark: #01579b;

    /* アクセントカラー */
    --color-accent: #00bcd4;
    --color-accent-light: #26c6da;

    /* 背景カラー */
    --color-bg-primary: #b3e5fc;
    --color-bg-secondary: #e1f5fe;
    --color-bg-light: #f1f8fb;
    --color-white: #ffffff;

    /* テキストカラー */
    --color-text: #212121;
    --color-text-light: #616161;
    --color-text-lighter: #9e9e9e;

    /* ボーダー・影 */
    --color-border: #e0e0e0;
    --shadow-sm: 0 4px 12px rgba(30, 136, 229, 0.06);
    --shadow-md: 0 6px 16px rgba(30, 136, 229, 0.1);
    --shadow-lg: 0 10px 28px rgba(30, 136, 229, 0.12);

    /* その他 */
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    padding-top: 70px; /* ナビゲーションバーの高さ分 */
}

html {
    scroll-behavior: smooth;
}

/* ナビゲーションバー */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.nav-logo a {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
    flex-grow: 1;
    justify-content: flex-end;
}

.nav-mlit-logo {
    height: 50px;
    width: auto;
    transition: opacity 0.3s;
}

.nav-mlit-logo:hover {
    opacity: 0.8;
}

.nav-item {
    margin: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
}

.nav-link:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* コンテナ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ヘッダー */
.header {
    position: relative;
    padding: 80px 0 100px 0;
    background: linear-gradient(135deg, #e1f5fe 0%, #b3e5fc 50%, #ffffff 100%);
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #0288d1 0%, #00bcd4 50%, #03a9f4 100%);
}

.header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 80px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0 C300 80 600 80 900 0 C1050 -27 1150 13 1200 0 L1200 120 L0 120 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat;
    background-size: cover;
}

.header-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    min-height: 400px;
    padding: 0 60px;
}

.header-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}

.main-title {
    font-size: 40px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.4;
    margin: 0;
}

.header-description {
    font-size: 18px;
    color: var(--color-text-light);
    line-height: 1.8;
    margin: 0;
}

.header-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-image-placeholder {
    width: 100%;
    height: 350px;
    background-color: var(--color-white);
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: 18px;
}

.header-illustration {
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--border-radius);
}

/* セクション共通スタイル */
.section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

.subsection-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 10px;
}

/* セクション共通設定 */
section {
    scroll-margin-top: 80px; /* ナビゲーションバーとの余白 */
}

/* 実施の目的セクション */
.purpose-section {
    position: relative;
    padding: 80px 0 100px 0;
    min-height: 300px;
    background-color: var(--color-white);
    overflow: hidden;
}

.purpose-section::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 80px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 20 Q300 90 600 50 T1200 40 L1200 120 L0 120 Z' fill='%23b3e5fc'/%3E%3C/svg%3E") no-repeat;
    background-size: cover;
}

.purpose-box {
    background-color: var(--color-white);
    padding: 60px 80px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.purpose-text {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
    color: var(--color-text);
}

.purpose-text:last-child {
    margin-bottom: 0;
}

/* お知らせセクション */
.news-section {
    position: relative;
    padding: 80px 0 100px 0;
    min-height: 250px;
    background-color: var(--color-bg-primary);
    overflow: hidden;
}

.news-section::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 80px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0 C300 70 600 70 900 0 C1050 -23 1150 10 1200 0 L1200 120 L0 120 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat;
    background-size: cover;
}

.news-section .section-title,
.news-section .news-list {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 60px;
    padding-right: 60px;
}

.news-notice {
    max-width: 1200px;
    margin: 0 auto 30px;
    padding: 24px 60px;
}

.notice-text {
    background-color: #fff3e0;
    border: 2px solid #ff9800;
    border-radius: var(--border-radius);
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: #e65100;
    line-height: 1.8;
    text-align: center;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.news-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    padding: 24px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    line-height: 1.8;
}

.news-date {
    font-weight: 600;
    color: var(--color-accent);
    white-space: nowrap;
    font-size: 16px;
}

.news-text {
    color: var(--color-text);
    font-size: 16px;
}

/* コンテンツグリッド */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 30px 0;
}

/* 関連資料セクション全体 */
.materials-section {
    position: relative;
    background-color: var(--color-white);
    padding: 80px 0 100px 0;
    overflow: hidden;
}

.materials-section::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 80px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 30 Q300 100 600 60 T1200 50 L1200 120 L0 120 Z' fill='%23b3e5fc'/%3E%3C/svg%3E") no-repeat;
    background-size: cover;
}

/* ダウンロードセクション */
.download-section {
    background-color: var(--color-white);
    padding: 60px 80px;
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 0;
    min-height: 450px;
}

.download-info {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--color-text);
}

.download-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.download-item-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.download-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 16px 20px;
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    color: var(--color-text);
    border: 1px solid transparent;
    transition: all 0.3s;
    cursor: default;
}

.download-item-link .download-item {
    cursor: pointer;
}

.download-item-link:hover .download-item {
    background-color: var(--color-bg-primary);
    border-color: var(--color-primary-light);
    transform: translateX(5px);
}

.file-icon {
    font-size: 20px;
}

.mlit-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid var(--color-primary);
    transition: all 0.3s;
    padding-bottom: 2px;
}

.mlit-link:hover {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary-dark);
}

/* アーカイブセクション */
.archive-section {
    position: relative;
    background-color: var(--color-bg-primary);
    padding: 80px 0 100px 0;
    margin-bottom: 0;
    min-height: 350px;
    overflow: hidden;
}

.archive-section::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 80px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 10 C300 80 600 60 900 10 C1050 -15 1150 15 1200 10 L1200 120 L0 120 Z' fill='%23ffffff'/%3E%3C/svg%3E") no-repeat;
    background-size: cover;
}

.archive-section .section-title,
.archive-section .archive-info,
.archive-section .archive-list {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 60px;
    padding-right: 60px;
}

.archive-info {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--color-text);
}

.archive-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.archive-item-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.archive-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 24px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    color: var(--color-text);
    border: 1px solid transparent;
    transition: all 0.3s;
    cursor: default;
}

.archive-item-link .archive-item {
    cursor: pointer;
}

.archive-item-link:hover .archive-item {
    background-color: var(--color-bg-light);
    border-color: var(--color-primary-light);
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.video-icon {
    font-size: 20px;
}

/* マンションセクション */
.mansion-section {
    background-color: var(--color-white);
    padding: 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
}

.mansion-info {
    font-size: 14px;
    margin-bottom: 20px;
    color: var(--color-text);
}

.schedule-list {
    background-color: var(--color-background);
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.schedule-item {
    padding: 8px 0;
}

.date-time {
    font-size: 14px;
    font-weight: 500;
}

.guide-video {
    background-color: var(--color-background);
    padding: 15px;
    border-radius: var(--border-radius);
}

.guide-info {
    font-size: 14px;
    color: var(--color-text);
}

/* DMOセクション */
.dmo-section {
    background-color: var(--color-white);
    padding: 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
}

.dmo-header {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    text-align: center;
}

.dmo-header h3 {
    font-size: 16px;
    margin-bottom: 10px;
}

.dmo-dates p {
    font-size: 14px;
    margin: 5px 0;
}

.building-image-placeholder {
    width: 100%;
    height: 200px;
    background-color: var(--color-background);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-top: 20px;
}

/* フィードバックセクション */
.feedback-section {
    background-color: var(--color-white);
    padding: 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    margin-top: 20px;
}

.feedback-item {
    padding: 15px;
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.feedback-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

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

/* 参加申込セクション */
.apply-section {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.apply-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    padding: 16px 48px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(30, 136, 229, 0.3);
    transition: all 0.3s;
    margin-bottom: 20px;
}

.apply-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 136, 229, 0.4);
}

.qr-code-placeholder {
    background-color: var(--color-background);
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
}

.qr-code-placeholder p {
    font-size: 14px;
    margin-bottom: 10px;
}

.qr-code {
    width: 120px;
    height: 120px;
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--color-text-light);
}

/* お問い合わせセクション全体 */
.contact-wrapper {
    background-color: var(--color-white);
    padding: 80px 0;
}

/* お問い合わせセクション */
.contact-section {
    background-color: var(--color-white);
    padding: 60px 80px;
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 0;
    min-height: 300px;
}

.contact-info {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--color-text);
}

.contact-details {
    background-color: var(--color-background);
    padding: 20px;
    border-radius: var(--border-radius);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-label {
    font-weight: 600;
    margin-right: 10px;
    min-width: 80px;
}

.contact-value {
    color: var(--color-text);
}

/* フッター */
.footer {
    text-align: center;
    padding: 40px 20px;
    margin-top: 0;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-light);
    font-size: 14px;
}

.footer p {
    margin: 5px 0;
}

.footer-link {
    color: var(--color-primary);
    text-decoration: none;
}

.footer-link:hover {
    text-decoration: underline;
}

.back-link {
    display: inline-block;
    padding: 14px 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(30, 136, 229, 0.3);
    transition: all 0.3s;
}

.back-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 136, 229, 0.4);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }

    .nav-container {
        height: 60px;
    }

    .nav-menu {
        gap: 15px;
    }

    .nav-link {
        font-size: 12px;
    }

    .nav-mlit-logo {
        height: 40px;
    }

    .header-content {
        grid-template-columns: 1fr;
        gap: 30px;
        min-height: auto;
        padding: 0 30px;
    }

    .main-title {
        font-size: 28px;
    }

    .header-description {
        font-size: 16px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .header-image-placeholder {
        height: 250px;
    }

    .header-illustration {
        max-height: 300px;
    }

    .content-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section-title {
        font-size: 18px;
    }

    .download-item {
        font-size: 13px;
    }

    .container {
        padding: 15px;
    }

    .header {
        padding: 20px 0 70px;
    }

    .header::after,
    .purpose-section::after,
    .news-section::after,
    .materials-section::after,
    .archive-section::after {
        height: 60px;
    }

    .purpose-section,
    .news-section,
    .materials-section,
    .archive-section {
        padding: 60px 0 80px 0;
    }

    .purpose-box,
    .download-section,
    .contact-section,
    .mansion-section,
    .dmo-section,
    .feedback-section {
        padding: 30px 20px;
    }

    .news-section .section-title,
    .news-section .news-list,
    .archive-section .section-title,
    .archive-section .archive-info,
    .archive-section .archive-list {
        padding-left: 30px;
        padding-right: 30px;
    }

    .news-notice {
        padding: 16px 30px;
    }

    .purpose-section,
    .news-section,
    .archive-section {
        padding: 40px 0;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 20px;
    }

    .header {
        padding: 40px 0 60px 0;
    }

    .header::after,
    .purpose-section::after,
    .news-section::after,
    .materials-section::after,
    .archive-section::after {
        height: 50px;
    }

    .purpose-section,
    .news-section,
    .materials-section,
    .archive-section {
        padding: 40px 0 70px 0;
    }

    .news-section .section-title,
    .news-section .news-list,
    .archive-section .section-title,
    .archive-section .archive-info,
    .archive-section .archive-list {
        padding-left: 20px;
        padding-right: 20px;
    }

    .news-notice {
        padding: 12px 20px;
    }

    .notice-text {
        font-size: 14px;
        padding: 16px 20px;
    }

    .main-title {
        font-size: 24px;
    }

    .header-description {
        font-size: 14px;
    }

    .header-image-placeholder {
        height: 200px;
        font-size: 14px;
    }

    .header-illustration {
        max-height: 250px;
    }

    .section-title {
        font-size: 20px;
        margin-bottom: 25px;
    }

    .subsection-title {
        font-size: 14px;
    }

    .purpose-text,
    .download-info,
    .mansion-info,
    .guide-info {
        font-size: 13px;
    }

    .apply-button {
        padding: 10px 20px;
        font-size: 14px;
    }
}