/*
Theme Name: 社歌制作事業テーマ
Theme URI: https://example.com
Author: Custom Theme Developer
Author URI: https://example.com
Description: 社歌制作事業の提案書をベースにしたWordPressカスタムテーマ。純粋なHTML/CSS/JavaScriptで実装され、全てのライブラリをローカルに含みます。
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: shaka-theme
Tags: business, presentation, corporate
*/

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

/* フォント設定 */
@font-face {
    font-family: 'Noto Sans JP';
    src: url('assets/fonts/NotoSansJP.ttf') format('truetype');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* ヒーローセクション */
.hero-section {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 40px 20px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, #9B9FE8 0%, #7B7FD8 100%);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(155, 159, 232, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #7B7FD8 0%, #5B5FC8 100%);
    color: #fff;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(123, 127, 216, 0.3);
}

/* セクション共通スタイル */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    text-align: left;
}

.section-light {
    background-color: #fff;
}

.section-gray {
    background-color: #f5f5f5;
}

/* 事業概要セクション */
.overview-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.overview-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.overview-item {
    display: flex;
    gap: 20px;
}

.overview-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #E8E9FA 0%, #D8D9EA 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #7B7FD8;
}

.overview-text h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.overview-text p {
    color: #666;
    line-height: 1.8;
}

.overview-image {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
}

.overview-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

/* 市場背景セクション */
.market-pyramid {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.pyramid-container {
    position: relative;
    margin: 40px 0;
}

.pyramid-level {
    background: linear-gradient(135deg, #E8E9FA 0%, #D8D9EA 100%);
    margin: 10px auto;
    padding: 30px 20px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.pyramid-level:nth-child(1) {
    width: 90%;
}

.pyramid-level:nth-child(2) {
    width: 95%;
}

.pyramid-level:nth-child(3) {
    width: 100%;
}

.pyramid-icon {
    font-size: 2rem;
    color: #7B7FD8;
}

.pyramid-content {
    text-align: left;
    flex: 1;
}

.pyramid-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.pyramid-content p {
    color: #666;
    font-size: 0.95rem;
}

.market-description {
    margin-top: 40px;
    color: #666;
    line-height: 1.8;
}

/* 制作プロセスセクション */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 600px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: linear-gradient(135deg, #E8E9FA 0%, #D8D9EA 100%);
    position: relative;
}

.process-step:not(:last-child) {
    margin-bottom: 20px;
}

.process-step::before {
    content: '';
    position: absolute;
    left: 50px;
    top: 100%;
    width: 2px;
    height: 20px;
    background: #D8D9EA;
}

.process-step:last-child::before {
    display: none;
}

.step-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #7B7FD8;
}

.step-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.step-content p {
    color: #666;
    line-height: 1.8;
}

/* 競合分析セクション */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.comparison-card {
    padding: 40px 30px;
    background: #fff;
    border-radius: 12px;
    border: 2px solid #E8E9FA;
}

.comparison-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.comparison-card p,
.comparison-card ul {
    color: #666;
    line-height: 1.8;
}

.comparison-card ul {
    list-style: none;
    padding-left: 0;
}

.comparison-card ul li {
    padding-left: 25px;
    position: relative;
    margin-bottom: 10px;
}

.comparison-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #7B7FD8;
    font-weight: bold;
}

/* 収益モデルセクション */
.revenue-section {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.revenue-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    z-index: 1;
}

.revenue-section .container {
    position: relative;
    z-index: 2;
}

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

.revenue-card {
    padding: 40px 30px;
    background: linear-gradient(135deg, #E8E9FA 0%, #D8D9EA 100%);
    border-radius: 12px;
}

.revenue-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.revenue-card ul {
    list-style: none;
    padding-left: 0;
}

.revenue-card ul li {
    padding-left: 25px;
    position: relative;
    margin-bottom: 10px;
    color: #666;
}

.revenue-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #7B7FD8;
    font-weight: bold;
}

/* 成長戦略セクション */
.timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 0;
    right: 0;
    height: 2px;
    background: #E8E9FA;
    z-index: 0;
}

.timeline-item {
    text-align: center;
    position: relative;
    z-index: 1;
}

.timeline-number {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #E8E9FA 0%, #D8D9EA 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: #7B7FD8;
    border: 4px solid #fff;
}

.timeline-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.timeline-item p {
    color: #666;
    line-height: 1.8;
}

/* 期待される効果セクション */
.effects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.effect-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.effect-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

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

.effect-content {
    padding: 30px;
}

.effect-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.effect-content p,
.effect-content ul {
    color: #666;
    line-height: 1.8;
}

.effect-content ul {
    list-style: none;
    padding-left: 0;
}

.effect-content ul li {
    padding-left: 25px;
    position: relative;
    margin-bottom: 10px;
}

.effect-content ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #7B7FD8;
    font-weight: bold;
}

/* レスポンシブデザイン */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .overview-section {
        grid-template-columns: 1fr;
    }
    
    .comparison-grid,
    .revenue-cards,
    .effects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
    }
}