/* ===================================
   カラーパレット（白赤基調）
   - coenレッド: #E60012
   - ベースホワイト: #FFFFFF
   - ダークグレー: #2A2A2A
   - ライトグレー: #F5F5F5
   =================================== */

:root {
    --coen-red: #E60012;
    --primary-white: #FFFFFF;
    --dark-gray: #2A2A2A;
    --light-gray: #F5F5F5;
    --accent-red: #DA291C;
    --text-primary: #2A2A2A;
    --text-secondary: #666666;
    --border-color: #E0E0E0;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--primary-white);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 80px;
}

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

/* ===================================
   ナビゲーションヘッダー
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 5px 30px rgba(230, 0, 18, 0.1);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.navbar-brand a {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.navbar-logo {
    height: 24px;
    width: auto;
    object-fit: contain;
    transition: all 0.3s ease;
}

.navbar-text {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-primary);
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.navbar-brand a:hover .navbar-logo {
    transform: scale(1.05);
}

.navbar-brand a:hover .navbar-text {
    color: var(--coen-red);
    text-shadow: 0 0 20px rgba(230, 0, 18, 0.2);
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}

.navbar-menu li a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 0;
    transition: all 0.3s ease;
    position: relative;
    letter-spacing: 0.05em;
}

.navbar-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--coen-red), transparent);
    transition: width 0.3s ease;
}

.navbar-menu li a:hover {
    color: var(--coen-red);
}

.navbar-menu li a:hover::after {
    width: 100%;
}

/* ハンバーガーメニュー（モバイル用） */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.navbar-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* ===================================
   ヒーローセクション
   =================================== */

.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-white) 0%, var(--light-gray) 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(230, 0, 18, 0.03) 0%, 
        rgba(255, 255, 255, 0.8) 50%, 
        rgba(230, 0, 18, 0.03) 100%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 40px 20px;
}

.logo-container {
    margin-bottom: 30px;
    animation: fadeInDown 1s ease;
}

.coen-logo {
    height: 60px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 10px 30px rgba(230, 0, 18, 0.1));
}

.main-title {
    margin: 0 0 30px 0;
}

.title-line {
    display: block;
    font-family: 'Rajdhani', sans-serif;
    letter-spacing: 0.1em;
    animation: fadeInUp 1s ease;
}

.title-large {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--coen-red), var(--accent-red));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 10px 50px rgba(230, 0, 18, 0.2);
    margin: 20px 0;
    letter-spacing: 0.15em;
}

.subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 700;
    color: var(--text-secondary);
    margin-top: 20px;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 800px;
    margin: 30px auto 0;
    line-height: 1.8;
    animation: fadeIn 1.5s ease;
}

/* アニメーション */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===================================
   共通セクションスタイル
   =================================== */

.section {
    padding: 100px 0;
}

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

.title-en {
    display: block;
    font-family: 'Rajdhani', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    letter-spacing: 0.15em;
    color: var(--coen-red);
    margin-bottom: 10px;
}

.title-ja {
    display: block;
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.2em;
}

/* ===================================
   イベント一覧セクション
   =================================== */

.events-section {
    background: var(--light-gray);
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.event-card {
    position: relative;
    background: var(--primary-white);
    border: 2px solid var(--border-color);
    border-radius: 0;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
}

.event-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--coen-red), var(--accent-red));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.event-card.active {
    cursor: pointer;
}

.event-card.active:hover {
    border-color: var(--coen-red);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(230, 0, 18, 0.15);
}

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

.event-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.event-card.disabled:hover {
    transform: none;
    border-color: var(--border-color);
}

.event-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--coen-red);
    color: var(--primary-white);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.event-badge.past {
    background: var(--text-secondary);
}

.event-number {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.event-game {
    font-family: 'Rajdhani', sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    margin-bottom: 15px;
}

.event-date {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--coen-red);
    margin-bottom: 20px;
}

.event-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.event-time {
    font-weight: 700;
}

.event-status {
    font-weight: 400;
}

.event-arrow {
    position: absolute;
    bottom: 20px;
    right: 30px;
    font-size: 2rem;
    color: var(--coen-red);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.event-card.active:hover .event-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* 過去大会カード */
.event-card.past {
    cursor: pointer;
    border-color: var(--text-secondary);
    border-width: 1px; /* 黒枠を細く */
    opacity: 0.7; /* 全体を少し薄く */
}

.event-card.past:hover {
    border-color: var(--coen-red);
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(230, 0, 18, 0.05); /* 影を薄く */
    opacity: 0.85; /* ホバー時は少し濃く */
}

.event-card.past::before {
    background: linear-gradient(90deg, var(--text-secondary), var(--coen-red));
}

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

.event-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    padding: 10px 20px;
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 700;
    transition: all 0.3s ease;
}

.event-card.past:hover .event-link {
    border-color: var(--coen-red);
    color: var(--coen-red);
    background: rgba(230, 0, 18, 0.05);
}

.event-link svg {
    transition: transform 0.3s ease;
}

.event-card.past:hover .event-link svg {
    transform: translateX(5px);
}

/* 特設サイトがあるイベントカード */
.event-card.has-special-site {
    cursor: default;
}

.event-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.event-link-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
}

.event-link-btn.special-site {
    border-color: var(--coen-red);
    color: var(--coen-red);
    background: rgba(230, 0, 18, 0.05);
}

.event-link-btn.special-site:hover {
    background: var(--coen-red);
    color: var(--primary-white);
    transform: translateX(5px);
}

.event-link-btn.archive:hover {
    border-color: var(--coen-red);
    color: var(--coen-red);
    background: rgba(230, 0, 18, 0.05);
    transform: translateX(5px);
}

.event-link-btn svg {
    transition: transform 0.3s ease;
}

.event-link-btn:hover svg {
    transform: translateX(5px);
}


/* ===================================
   運営メンバーセクション
   =================================== */

.team-section {
    background: var(--primary-white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.team-member {
    background: var(--light-gray);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--coen-red);
    padding: 30px 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.team-member:hover {
    background: var(--primary-white);
    border-left-width: 8px;
    box-shadow: 0 10px 30px rgba(230, 0, 18, 0.1);
    transform: translateY(-5px);
}

.member-name {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--text-primary);
}

.member-role {
    font-family: 'Rajdhani', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--coen-red);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* ===================================
   主催セクション
   =================================== */

.organizer-section {
    background: var(--light-gray);
}

.organizer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    max-width: 800px;
    margin: 0 auto;
}

.organizer-logo {
    flex-shrink: 0;
}

.organizer-logo img {
    width: 150px;
    height: auto;
    object-fit: contain;
}

.organizer-info {
    flex: 1;
}

.organizer-name {
    font-family: 'Rajdhani', sans-serif;
    font-size: 2rem;
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.organizer-description {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.organizer-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    background: var(--coen-red);
    color: var(--primary-white);
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
}

.organizer-link:hover {
    background: var(--accent-red);
    transform: translateX(5px);
}

/* ===================================
   フッター
   =================================== */

.footer {
    background: var(--dark-gray);
    color: var(--primary-white);
    padding: 60px 0;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 30px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-logo span {
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.footer-copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ===================================
   レスポンシブ対応
   =================================== */

@media (max-width: 768px) {
    /* ナビゲーション */
    .navbar-toggle {
        display: flex;
    }

    .navbar-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .navbar-menu li {
        width: 100%;
        text-align: center;
    }

    .navbar-menu li a {
        display: block;
        padding: 15px 20px;
    }

    .navbar-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }

    .navbar-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .navbar-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    /* ヒーロー */
    .hero {
        min-height: 70vh;
    }

    .coen-logo {
        height: 40px;
    }

    /* セクション */
    .section {
        padding: 60px 0;
    }

    .section-title {
        margin-bottom: 40px;
    }

    /* イベントカード */
    .events-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .event-card {
        padding: 30px 20px;
    }

    /* 主催セクション */
    .organizer-content {
        flex-direction: column;
        gap: 30px;
    }

    .organizer-logo img {
        width: 120px;
    }

    .organizer-info {
        text-align: center;
    }
}