/* ===================================
   ENDHAVING Corporate Website Styles
   禅的ミニマリズム - 静寂と本質の追求
   =================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Cormorant+Garamond:wght@300;400;500;600&display=swap');

/* CSS変数 - カラーパレット */
:root {
    /* メインカラー */
    --color-deep-navy: #1a2332;
    --color-navy: #2c3e50;
    --color-charcoal: #3a4556;
    --color-slate: #5a6a7a;
    --color-mist: #8b9aa7;
    
    /* ニュートラル */
    --color-off-white: #f8f9fa;
    --color-light-gray: #e8eaed;
    --color-white: #ffffff;
    
    /* アクセント */
    --color-cosmic: #4a5d7f;
    --color-zen: #6b8299;
    
    /* タイポグラフィ */
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Noto Sans JP', sans-serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    /* トランジション */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.8;
    color: var(--color-charcoal);
    background-color: var(--color-off-white);
    overflow-x: hidden;
}

/* コンテナ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   ヘッダー / ナビゲーション
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(42, 62, 80, 0.1);
    transition: var(--transition-smooth);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-deep-navy);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.logo:hover {
    color: var(--color-cosmic);
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--color-charcoal);
    text-decoration: none;
    position: relative;
    transition: var(--transition-smooth);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-cosmic);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--color-cosmic);
}

.nav-link:hover::after {
    width: 100%;
}

/* ===================================
   ヒーローセクション
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-deep-navy) 0%, var(--color-navy) 50%, var(--color-charcoal) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.15;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    animation: cosmicDrift 20s ease-in-out infinite;
}

@keyframes cosmicDrift {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(20px, -20px) scale(1.05);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.hero-logo {
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    animation: fadeInUp 1.2s ease-out forwards;
}

.logo-image {
    max-width: 200px;
    width: 100%;
    height: auto;
    filter: brightness(0) invert(1);
    opacity: 0.95;
}

.hero-title {
    font-family: var(--font-body);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 300;
    letter-spacing: 0.05em;
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 1.2s ease-out 0.3s forwards;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 300;
    letter-spacing: 0.1em;
    line-height: 2;
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    animation: fadeInUp 1.2s ease-out 0.6s forwards;
}

.hero-mission {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0;
    animation: fadeInUp 1.2s ease-out 0.9s forwards;
}

.mission-text {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    font-weight: 300;
    line-height: 2;
    letter-spacing: 0.05em;
}

/* スクロールインジケーター */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-white);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    opacity: 0.7;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-white), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(10px);
    }
}

/* フェードインアニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 1s ease-out forwards;
}

.fade-in-delay-1 {
    animation: fadeInUp 1s ease-out 0.3s forwards;
}

.fade-in-delay-2 {
    animation: fadeInUp 1s ease-out 0.6s forwards;
}

/* ===================================
   セクション共通スタイル
   =================================== */
.section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    letter-spacing: 0.15em;
    color: var(--color-deep-navy);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--color-slate);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* ===================================
   NEWSセクション
   =================================== */
.news-section {
    background-color: var(--color-white);
}

.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    display: grid;
    grid-template-columns: 120px 100px 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-light-gray);
    transition: var(--transition-smooth);
    align-items: center;
}

.news-item:hover {
    transform: translateX(10px);
    cursor: pointer;
}

.news-date {
    font-family: var(--font-display);
    font-size: 0.95rem;
    color: var(--color-slate);
    letter-spacing: 0.05em;
}

.news-category {
    font-size: 0.85rem;
    color: var(--color-cosmic);
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--color-cosmic);
    border-radius: 2px;
    text-align: center;
    letter-spacing: 0.05em;
}

.news-title {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-charcoal);
    letter-spacing: 0.02em;
}

/* ===================================
   ABOUTセクション
   =================================== */
.about-section {
    background: linear-gradient(180deg, var(--color-off-white) 0%, var(--color-white) 100%);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-vision,
.about-philosophy,
.about-values {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-left: 2px solid var(--color-cosmic);
}

.about-heading {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-deep-navy);
    margin-bottom: var(--spacing-md);
}

.about-text {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-charcoal);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.03em;
}

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

.values-list {
    list-style: none;
}

.value-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-charcoal);
}

.value-icon {
    font-size: 0.75rem;
    color: var(--color-cosmic);
    margin-top: 0.3rem;
}

.value-item strong {
    font-weight: 500;
    color: var(--color-deep-navy);
}

/* ===================================
   BUSINESSセクション
   =================================== */
.business-section {
    background-color: var(--color-white);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.business-card {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-off-white) 0%, var(--color-white) 100%);
    border: 1px solid var(--color-light-gray);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-cosmic), var(--color-zen));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.business-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(26, 35, 50, 0.1);
}

.business-card:hover::before {
    transform: scaleX(1);
}

.business-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--color-mist);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.business-title {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-deep-navy);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
}

.business-description {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-charcoal);
    letter-spacing: 0.02em;
}

/* ===================================
   COMPANY INFOセクション
   =================================== */
.company-section {
    background: linear-gradient(180deg, var(--color-off-white) 0%, var(--color-white) 100%);
}

.company-info {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-light-gray);
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-light-gray);
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 500;
    color: var(--color-deep-navy);
    letter-spacing: 0.05em;
}

.info-value {
    color: var(--color-charcoal);
    line-height: 1.8;
    letter-spacing: 0.02em;
}

/* ===================================
   フッター
   =================================== */
.footer {
    background-color: var(--color-deep-navy);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-sm);
}

.footer-text {
    font-size: 0.9rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
    opacity: 0.8;
}

.footer-copyright {
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    opacity: 0.6;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===================================
   Read Moreボタン（index.html用）
   =================================== */
.read-more-button {
    display: inline-block;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-cosmic);
    color: var(--color-white);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    border: 2px solid var(--color-cosmic);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.read-more-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--color-deep-navy);
    transition: var(--transition-smooth);
    z-index: -1;
}

.read-more-button:hover {
    color: var(--color-white);
    border-color: var(--color-deep-navy);
}

.read-more-button:hover::before {
    left: 0;
}

.read-more-wrapper {
    text-align: center;
}

/* ===================================
   ABOUT詳細ページ（about.html）
   =================================== */

/* ページヘッダー */
.page-header {
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-deep-navy) 0%, var(--color-navy) 100%);
    text-align: center;
    color: var(--color-white);
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    opacity: 0.9;
}

/* TOPメッセージセクション */
.top-message-section {
    background-color: var(--color-white);
}

.message-content {
    max-width: 900px;
    margin: 0 auto;
}

.message-intro {
    text-align: center;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-off-white) 0%, var(--color-white) 100%);
    border-left: 3px solid var(--color-cosmic);
}

.intro-text {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    font-weight: 400;
    line-height: 2;
    color: var(--color-deep-navy);
    letter-spacing: 0.05em;
}

.message-photo {
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.ceo-photo {
    max-width: 400px;
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(26, 35, 50, 0.15);
    transition: var(--transition-smooth);
}

.ceo-photo:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(26, 35, 50, 0.2);
}

.message-body {
    margin-bottom: var(--spacing-xl);
}

.message-text {
    font-size: 1.05rem;
    line-height: 2.2;
    color: var(--color-charcoal);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.03em;
}

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

.message-signature {
    text-align: right;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-light-gray);
    margin-top: var(--spacing-xl);
}

.signature-text {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-slate);
    letter-spacing: 0.05em;
}

/* 経営理念セクション */
.philosophy-section {
    background: linear-gradient(180deg, var(--color-off-white) 0%, var(--color-white) 100%);
}

.philosophy-content {
    max-width: 900px;
    margin: 0 auto;
}

.philosophy-main {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
}

.philosophy-heading {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-deep-navy);
    margin-bottom: var(--spacing-md);
}

.philosophy-text {
    font-size: 1.05rem;
    line-height: 2;
    color: var(--color-charcoal);
    letter-spacing: 0.03em;
}

.philosophy-items {
    margin-bottom: var(--spacing-xl);
}

.philosophy-item {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background-color: var(--color-white);
    border-left: 3px solid var(--color-cosmic);
    transition: var(--transition-smooth);
}

.philosophy-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(26, 35, 50, 0.08);
}

.philosophy-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 300;
    color: var(--color-mist);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.philosophy-item-title {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-deep-navy);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
}

.philosophy-item-text {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-charcoal);
    letter-spacing: 0.03em;
}

.philosophy-values {
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-light-gray);
}

.values-detailed-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.value-detailed-item {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-light-gray);
}

.value-detailed-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.value-detailed-item strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-deep-navy);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.value-detailed-item p {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--color-charcoal);
    letter-spacing: 0.02em;
}

/* ビジョン詳細セクション */
.vision-detail-section {
    background-color: var(--color-white);
}

.vision-content {
    max-width: 900px;
    margin: 0 auto;
}

.vision-main {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-off-white) 0%, var(--color-white) 100%);
    border-left: 3px solid var(--color-cosmic);
}

.vision-text {
    font-size: 1.05rem;
    line-height: 2.2;
    color: var(--color-charcoal);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.03em;
}

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

.vision-future {
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border: 1px solid var(--color-light-gray);
}

.vision-future-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-deep-navy);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.vision-future-items {
    display: grid;
    gap: var(--spacing-md);
}

.vision-future-item {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-off-white) 0%, var(--color-white) 100%);
    border-left: 2px solid var(--color-zen);
}

.vision-future-item h4 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-deep-navy);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.vision-future-item p {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--color-charcoal);
    letter-spacing: 0.02em;
}

/* 戻るボタン */
.back-section {
    background-color: var(--color-off-white);
    padding: var(--spacing-lg) 0;
}

.back-button-wrapper {
    text-align: center;
}

.back-button {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-white);
    color: var(--color-deep-navy);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    border: 2px solid var(--color-cosmic);
    transition: var(--transition-smooth);
}

.back-button:hover {
    background-color: var(--color-cosmic);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(74, 93, 127, 0.3);
}

/* Coming Soonスタイル */
.coming-soon-wrapper {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.coming-soon-text {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 300;
    color: var(--color-slate);
    letter-spacing: 0.15em;
    font-style: italic;
}

/* ===================================
   レスポンシブデザイン
   =================================== */
@media (max-width: 768px) {
    .header-content {
        height: 70px;
    }
    
    .nav-list {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-content {
        padding: var(--spacing-lg) 0;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        margin-bottom: var(--spacing-md);
    }
    
    .section-subtitle {
        margin-bottom: var(--spacing-lg);
    }
    
    .news-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .business-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .info-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .about-vision,
    .about-philosophy,
    .about-values {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .nav-list {
        gap: var(--spacing-sm);
    }
    
    .hero-mission {
        padding: var(--spacing-md);
    }
    
    .logo-image {
        max-width: 150px;
    }
}