/* ===================================
   リセット & 基本設定
   =================================== */
/* Updated: 2024-12-09 金網背景適用 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #c41e3a;
    --secondary-color: #000000;
    --accent-color: #ffd700;
    --fire-orange: #ff6b00;
    --fire-red: #ff0000;
    --text-color: #ffffff;
    --text-light: #cccccc;
    --bg-light: #1a1a1a;
    --bg-dark: #0a0a0a;
    --white: #ffffff;
    --black: #000000;
    --border-color: #333;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 5px 20px rgba(196, 30, 58, 0.5);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--secondary-color);
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    background-attachment: fixed;
    z-index: -1;
    opacity: 0.8;
    animation: meshGlow 3s ease-in-out infinite alternate;
}

@keyframes meshGlow {
    0% {
        opacity: 0.7;
    }
    100% {
        opacity: 0.9;
    }
}

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

.section {
    padding: 80px 0;
}

.section-title {
    font-family: 'Bebas Neue', cursive;
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--white);
    letter-spacing: 2px;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.section-description {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* ===================================
   ヘッダー & ナビゲーション
   =================================== */
.header {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 2px 20px rgba(196, 30, 58, 0.5), 0 0 50px rgba(255, 107, 0, 0.2);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 2px solid var(--primary-color);
    backdrop-filter: blur(10px);
}

.header.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
}

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

.logo-image {
    height: 70px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
    display: block;
}

.logo-image:hover {
    transform: scale(1.05);
}

.logo h1 {
    font-family: 'Bebas Neue', cursive;
    font-size: 2.5rem;
    color: var(--primary-color);
    letter-spacing: 3px;
    text-shadow: 2px 2px 0 var(--secondary-color);
}

.logo .organizer {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: -5px;
    letter-spacing: 1px;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: var(--white);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

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

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

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-download-btn {
    display: flex;
    gap: 0.5rem;
}

.btn-nav-download {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 4rem;
    background: linear-gradient(135deg, var(--primary-color), #a01828);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.4);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-nav-download:hover {
    background: linear-gradient(135deg, #a01828, var(--primary-color));
    transform: translateY(-3px);
    box-shadow: 
        0 8px 25px rgba(196, 30, 58, 0.7),
        0 0 30px rgba(255, 107, 0, 0.4);
}

.btn-nav-download i {
    font-size: 1.3rem;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    margin: 3px 0;
    transition: var(--transition);
}

/* ===================================
   ヒーローセクション
   =================================== */
.hero {
    height: 100vh;
    background: 
        radial-gradient(ellipse at center, rgba(196, 30, 58, 0.2) 0%, rgba(0, 0, 0, 0.8) 70%),
        linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.6) 100%);
    animation: heroFlicker 2s ease-in-out infinite alternate;
}

@keyframes heroFlicker {
    0% {
        opacity: 0.8;
    }
    100% {
        opacity: 1;
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    padding: 0 20px;
    margin-top: 10vh;
}

.hero-logo {
    max-width: 700px;
    width: 90%;
    height: auto;
    margin-bottom: 3rem;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.5));
    animation: heroTitleAnim 1s ease-out;
    object-fit: contain;
}

.hero-title {
    font-family: 'Bebas Neue', cursive;
    font-size: 7rem;
    letter-spacing: 10px;
    margin-bottom: 1rem;
    text-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
    animation: heroTitleAnim 1s ease-out;
}

@keyframes heroTitleAnim {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 300;
    animation: heroSubtitleAnim 1s ease-out 0.3s both;
}

.hero-organizer {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    letter-spacing: 2px;
    color: var(--accent-color);
    animation: heroSubtitleAnim 1s ease-out 0.5s both;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: heroButtonsAnim 1s ease-out 0.7s both;
}

@keyframes heroButtonsAnim {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background: transparent;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(196, 30, 58, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--white);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ===================================
   大会について
   =================================== */
.about {
    background: var(--bg-dark);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(10, 10, 10, 0.85), rgba(10, 10, 10, 0.85)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    opacity: 0.4;
    z-index: 0;
}

.about .container {
    position: relative;
    z-index: 1;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: rgba(26, 26, 26, 0.7);
    border-radius: 10px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-item h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.feature-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===================================
   ルール
   =================================== */
.rules {
    background: var(--bg-dark);
    position: relative;
}

.rules::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(10, 10, 10, 0.85), rgba(10, 10, 10, 0.85)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    opacity: 0.35;
    z-index: 0;
}

.rules .container {
    position: relative;
    z-index: 1;
}

.rules-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.rule-tab {
    padding: 1rem 2.5rem;
    background: var(--bg-dark);
    color: var(--text-light);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;  /* トランジション高速化 */
    font-family: 'Noto Sans JP', sans-serif;
}

.rule-tab:hover {
    border-color: var(--primary-color);
    color: var(--white);
}

.rule-tab.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(196, 30, 58, 0.4);
}

.rules-content {
    display: grid;
    gap: 2rem;
    animation: fadeIn 0.3s ease-in-out;  /* フェードインアニメーション追加 */
}

.rules-content.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.rule-category {
    background: rgba(26, 26, 26, 0.7);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
}

.rule-category.warning,
.rule-category.warning-category {
    border-left-color: #ff6b6b;
}

/* ルールヘッダー */
.rules-header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid rgba(196, 30, 58, 0.3);
}

.rules-main-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
    text-shadow: 0 0 20px rgba(196, 30, 58, 0.5);
}

.rules-header h3 {
    font-size: 2rem;
    margin: 0;
    color: var(--white);
    font-weight: 700;
    letter-spacing: 1px;
}

/* ルール説明 */
.rules-description {
    color: var(--white);
}

.rules-lead {
    font-size: 1.15rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.9);
}

/* ルールセクション */
.rule-section {
    margin-bottom: 2.5rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    will-change: opacity, transform;  /* レンダリング最適化 */
}

.rule-section.warning-section {
    background: rgba(255, 107, 107, 0.05);
    border-left-color: #ff6b6b;
}

.rule-section h4 {
    font-size: 1.4rem;
    margin: 0 0 1.5rem 0;
    color: var(--white);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.rule-section h4 i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.rule-section.warning-section h4 i {
    color: #ff6b6b;
}

.rule-section .rule-content {
    color: rgba(255, 255, 255, 0.9);
}

.rule-section .rule-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.rule-section .rule-content ul li {
    padding: 0.8rem 0;
    padding-left: 2rem;
    position: relative;
    line-height: 1.7;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.rule-section .rule-content ul li:last-child {
    border-bottom: none;
}

.rule-section .rule-content ul li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.rule-section.warning-section .rule-content ul li::before {
    content: "⚠";
    color: #ff6b6b;
}

.rule-section .rule-content strong {
    color: var(--accent-color);
    font-weight: 600;
}

.rule-section .rule-intro {
    margin-bottom: 1rem;
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

.rule-section .numbered-list {
    list-style: none;
    counter-reset: rule-counter;
    padding: 0;
    margin: 0;
}

.rule-section .numbered-list li {
    counter-increment: rule-counter;
    padding: 0.8rem 0 0.8rem 3rem;
    position: relative;
    line-height: 1.7;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.rule-section .numbered-list li:last-child {
    border-bottom: none;
}

.rule-section .numbered-list li::before {
    content: counter(rule-counter);
    position: absolute;
    left: 0;
    top: 0.8rem;
    width: 2rem;
    height: 2rem;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.rule-section .note {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-left: 3px solid var(--accent-color);
    border-radius: 5px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* お問い合わせ案内 */
.rules-contact {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 2rem;
    background: rgba(255, 215, 0, 0.1);
    border-radius: 10px;
    border: 2px solid rgba(255, 215, 0, 0.3);
    margin-top: 2rem;
}

.rules-contact > i {
    font-size: 2.5rem;
    color: var(--accent-color);
    flex-shrink: 0;
}

.rules-contact h4 {
    font-size: 1.3rem;
    margin: 0 0 0.5rem 0;
    color: var(--accent-color);
    font-weight: 600;
}

.rules-contact p {
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

.rules-contact a {
    color: var(--accent-color);
    text-decoration: underline;
    font-weight: 600;
    transition: color 0.3s ease;
}

.rules-contact a:hover {
    color: #fff;
}

.rule-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rule-category h3 i {
    color: var(--primary-color);
}

.rule-category.warning h3 i,
.rule-category.warning-category h3 i {
    color: #ff6b6b;
}

.rule-category .rule-content ul,
.rule-category .rule-content ol {
    margin-left: 1.5rem;
    margin-top: 1rem;
}

.rule-category .rule-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.rule-category ul {
    list-style: none;
    padding-left: 0;
}

.rule-category ul li {
    padding: 0.8rem 0;
    padding-left: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.rule-category ul li:last-child {
    border-bottom: none;
}

.rule-category ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.weight-classes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.weight-class {
    background: var(--bg-dark);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.weight-class:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.weight-class h4 {
    color: var(--white);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.weight-class p {
    color: var(--text-light);
    font-weight: 600;
}

.note {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-dark);
    border-radius: 5px;
    color: var(--text-light);
    font-size: 0.95rem;
    border-left: 3px solid var(--accent-color);
}

.fight-format {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.format-item {
    background: var(--bg-dark);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.format-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.format-item h4 {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-family: 'Bebas Neue', cursive;
    letter-spacing: 1px;
}

.format-item p {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.format-item .sub {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 400;
    margin: 0;
}

.rule-intro {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.8;
}

.numbered-list {
    list-style: none;
    counter-reset: item;
    padding-left: 0;
}

.numbered-list > li {
    counter-increment: item;
    padding: 1rem 0;
    padding-left: 2rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.numbered-list > li:last-child {
    border-bottom: none;
}

.numbered-list > li::before {
    content: counter(item) ". ";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.1rem;
}

.sub-list {
    margin-top: 1rem;
    margin-left: 1.5rem;
    list-style: none;
    padding-left: 0;
}

.sub-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    border: none;
}

.sub-list li::before {
    content: '◦';
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.sub-heading {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.weight-classes-compact {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.8rem;
    margin-top: 1rem;
    margin-bottom: 1.5rem;
}

.weight-item {
    background: var(--bg-dark);
    padding: 0.8rem 1rem;
    border-radius: 5px;
    border-left: 3px solid var(--primary-color);
    color: var(--text-light);
    font-size: 0.95rem;
    transition: var(--transition);
}

.weight-item:hover {
    border-left-color: var(--accent-color);
    transform: translateX(5px);
}

.rules-download-section {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 2px solid var(--border-color);
}

.download-box {
    background: rgba(26, 26, 26, 0.7);
    border-radius: 15px;
    padding: 3rem;
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(196, 30, 58, 0.2);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 2rem;
    transition: var(--transition);
}

.download-box:hover {
    border-color: var(--primary-color);
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.7),
        0 0 50px rgba(196, 30, 58, 0.4);
}

.download-icon {
    flex-shrink: 0;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), #a01828);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(196, 30, 58, 0.5);
}

.download-icon i {
    font-size: 3rem;
    color: var(--white);
}

.download-content {
    flex: 1;
}

.download-content h3 {
    font-size: 1.8rem;
    color: var(--white);
    margin-bottom: 0.8rem;
    font-family: 'Bebas Neue', cursive;
    letter-spacing: 1px;
}

.download-content p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex-shrink: 0;
}

.btn-download-rules {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), #a01828);
    color: var(--white);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(196, 30, 58, 0.4);
    white-space: nowrap;
}

.btn-download-rules:hover {
    background: linear-gradient(135deg, #a01828, var(--primary-color));
    transform: translateY(-3px);
    box-shadow: 
        0 8px 20px rgba(196, 30, 58, 0.6),
        0 0 30px rgba(255, 107, 0, 0.4);
}

.btn-download-rules i {
    font-size: 1.2rem;
}

.no-application-forms {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-light);
    font-size: 0.95rem;
    font-style: italic;
}

/* レスポンシブ対応 */
@media (max-width: 968px) {
    .download-box {
        flex-direction: column;
        text-align: center;
        padding: 2rem;
    }
    
    .download-buttons {
        width: 100%;
    }
    
    .btn-download-rules {
        width: 100%;
        justify-content: center;
    }

    .rule-category {
        padding: 2rem;
    }

    .rules-header h3 {
        font-size: 1.6rem;
    }

    .rules-main-icon {
        font-size: 3rem;
    }

    .rule-section {
        padding: 1.5rem;
    }

    .rule-section h4 {
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .rules-contact {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .rule-section .rule-content ul li {
        padding-left: 1.5rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .download-icon {
        width: 80px;
        height: 80px;
    }
    
    .download-icon i {
        font-size: 2.5rem;
    }
    
    .download-content h3 {
        font-size: 1.5rem;
    }

    .rule-category {
        padding: 1.5rem;
    }

    .rules-header {
        margin-bottom: 2rem;
    }

    .rules-header h3 {
        font-size: 1.4rem;
    }

    .rules-main-icon {
        font-size: 2.5rem;
    }

    .rules-lead {
        font-size: 1rem;
    }

    .rule-section {
        padding: 1.2rem;
        margin-bottom: 1.5rem;
    }

    .rule-section h4 {
        font-size: 1.1rem;
    }

    .rule-section h4 i {
        font-size: 1.1rem;
    }

    .rule-section .rule-content ul li {
        padding: 0.6rem 0;
        padding-left: 1.3rem;
        font-size: 0.9rem;
    }

    .rules-contact {
        padding: 1.5rem;
    }

    .rules-contact > i {
        font-size: 2rem;
    }

    .rules-contact h4 {
        font-size: 1.1rem;
    }
}

/* ===================================
   回答者リストページ
   =================================== */
.responders-page {
    min-height: 70vh;
}

.responders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.responder-card {
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    transition: var(--transition);
    position: relative;
}

.responder-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.responder-header {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.responder-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.responder-icon i {
    font-size: 1.8rem;
    color: var(--white);
}

.responder-info h3 {
    font-size: 1.3rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.responder-email {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.responder-email i {
    color: var(--primary-color);
}

.responder-email a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.responder-email a:hover {
    color: var(--primary-color);
}

.responder-inquiry {
    background: var(--bg-dark);
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.inquiry-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.inquiry-label i {
    color: var(--accent-color);
}

.inquiry-person {
    color: var(--white);
    font-size: 1.05rem;
    margin: 0;
}

.responder-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.responder-date i {
    color: var(--primary-color);
}

.responder-message {
    background: var(--bg-dark);
    padding: 1rem;
    border-radius: 5px;
}

.message-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.message-label i {
    color: var(--accent-color);
}

.responder-message p {
    color: var(--text-light);
    line-height: 1.8;
    margin: 0;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .responders-grid {
        grid-template-columns: 1fr;
    }
    
    .responder-header {
        flex-direction: column;
        text-align: center;
    }
}

/* ===================================
   スケジュール
   =================================== */
.schedule {
    background: var(--bg-light);
    position: relative;
}

.schedule::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(26, 26, 26, 0.80), rgba(26, 26, 26, 0.80)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    opacity: 0.5;
    z-index: 0;
}

.schedule .container {
    position: relative;
    z-index: 1;
}

.schedule-content {
    display: grid;
    gap: 2rem;
}

.event-card {
    background: rgba(26, 26, 26, 0.7);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    transition: var(--transition);
    border: 2px solid var(--border-color);
}

.event-card:hover {
    box-shadow: 
        0 5px 20px rgba(0, 0, 0, 0.7),
        0 0 30px rgba(196, 30, 58, 0.4),
        0 0 50px rgba(255, 107, 0, 0.2);
    transform: translateY(-5px);
}

.event-card.upcoming {
    border-color: var(--accent-color);
}

.event-date {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 150px;
}

.event-date .month {
    font-size: 1.2rem;
    font-weight: 300;
}

.event-date .day {
    font-size: 3rem;
    font-weight: 900;
    font-family: 'Bebas Neue', cursive;
}

.event-date .year {
    font-size: 1rem;
    font-weight: 300;
}

.event-details {
    padding: 2rem;
    flex: 1;
    position: relative;
}

.event-details h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--white);
    font-family: 'Bebas Neue', cursive;
    letter-spacing: 1px;
}

.event-details p {
    margin-bottom: 0.8rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.event-details p i {
    color: var(--primary-color);
}

.badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-color);
    color: var(--secondary-color);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.event-actions {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), #a01828);
    color: var(--white);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: 0 3px 10px rgba(196, 30, 58, 0.3);
}

.btn-download:hover {
    background: linear-gradient(135deg, #a01828, var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 
        0 5px 15px rgba(196, 30, 58, 0.5),
        0 0 20px rgba(255, 107, 0, 0.3);
}

.btn-download i {
    font-size: 1.1rem;
}

/* ===================================
   新着情報
   =================================== */
.news {
    background: var(--bg-dark);
    position: relative;
}

.news::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(10, 10, 10, 0.85), rgba(10, 10, 10, 0.85)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    opacity: 0.35;
    z-index: 0;
}

.news .container {
    position: relative;
    z-index: 1;
}

.news-list {
    display: grid;
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    background: rgba(26, 26, 26, 0.7);
    border-radius: 10px;
    padding: 1.5rem 2rem;
    border-left: 5px solid var(--primary-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.news-item:hover {
    transform: translateX(10px);
    box-shadow: 
        0 5px 20px rgba(0, 0, 0, 0.7),
        0 0 30px rgba(196, 30, 58, 0.4);
}

.news-item.important {
    border-left-color: var(--accent-color);
    background: rgba(255, 215, 0, 0.05);
}

.news-item.important::before {
    content: '重要';
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-color);
    color: var(--secondary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.news-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.8rem;
    flex-wrap: wrap;
}

.news-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.news-date i {
    color: var(--primary-color);
}

.news-category {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.2rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.news-title {
    font-size: 1.4rem;
    color: var(--white);
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.news-content {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1rem;
}

.no-news {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
    font-size: 1.1rem;
}

.no-news i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    display: block;
}

/* ===================================
   参加選手
   =================================== */
.fighters {
    background: var(--bg-light);
    position: relative;
}

.fighters::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(26, 26, 26, 0.80), rgba(26, 26, 26, 0.80)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    opacity: 0.4;
    z-index: 0;
}

.fighters .container {
    position: relative;
    z-index: 1;
}

.fighters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.fighter-card {
    background: rgba(26, 26, 26, 0.7);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.fighter-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.fighter-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    display: flex;
    align-items: center;
    justify-content: center;
}

.fighter-placeholder {
    font-size: 5rem;
    color: rgba(255, 255, 255, 0.3);
}

.fighter-info {
    padding: 1.5rem;
}

.fighter-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.fighter-class {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.fighter-record {
    color: var(--text-light);
    font-size: 0.9rem;
}

.more-info {
    text-align: center;
    color: var(--text-light);
    font-style: italic;
}

/* ===================================
   お問い合わせ
   =================================== */
.contact {
    background: var(--bg-dark);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(rgba(10, 10, 10, 0.80), rgba(10, 10, 10, 0.80)),
        url('../images/mesh-background.jpg') center center;
    background-size: cover;
    opacity: 0.5;
    z-index: 0;
}

.contact .container {
    position: relative;
    z-index: 1;
}

.contact-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form {
    background: rgba(26, 26, 26, 0.7);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--white);
    font-weight: 500;
}

.required {
    color: var(--primary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-dark);
    color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    position: relative;
}

.btn-submit .btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loading {
    display: inline;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 5px;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.contact-info {
    background: rgba(26, 26, 26, 0.7);
    padding: 2rem;
    border-radius: 10px;
    height: fit-content;
    border: 1px solid var(--border-color);
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.2rem;
}

.info-item strong {
    display: block;
    color: var(--white);
    margin-bottom: 0.3rem;
}

.info-item p {
    color: var(--text-light);
    margin: 0;
    line-height: 1.6;
}

.info-item p.small {
    font-size: 0.9rem;
    margin-top: 0.3rem;
}

.info-item a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.info-item a:hover {
    color: var(--primary-color);
}

.address {
    line-height: 1.8;
}

.contact-item {
    margin-top: 0.5rem;
}

.contact-item i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

/* ===================================
   フッター
   =================================== */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    max-width: 250px;
    width: 100%;
    height: auto;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.footer-section h3 {
    font-family: 'Bebas Neue', cursive;
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.footer-section p strong {
    color: var(--white);
    font-weight: 600;
}

.footer-section .address {
    margin-top: 0.5rem;
}

.footer-section .contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
    font-size: 0.95rem;
}

.footer-section .contact-item a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section .contact-item a:hover {
    color: var(--accent-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ===================================
   レスポンシブデザイン
   =================================== */
@media (max-width: 968px) {
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.98);
        box-shadow: -2px 0 10px rgba(196, 30, 58, 0.5);
        transition: var(--transition);
        padding: 5rem 2rem;
        border-left: 2px solid var(--primary-color);
        flex-direction: column;
    }

    .nav.active {
        right: 0;
    }

    .nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    .nav a {
        font-size: 1.2rem;
    }

    .nav-download-btn {
        margin-top: 2rem;
        padding-top: 2rem;
        border-top: 1px solid var(--border-color);
    }

    .btn-nav-download {
        width: 100%;
        justify-content: center;
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    .mobile-menu-toggle {
        display: flex;
        z-index: 1001;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

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

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

    .logo-image {
        height: 60px;
    }

    .hero-logo {
        max-width: 500px;
        width: 85%;
    }

    .hero-title {
        font-size: 4rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

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

    .event-card {
        flex-direction: column;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .logo-image {
        height: 55px;
    }

    .hero-logo {
        max-width: 400px;
        width: 90%;
    }

    .hero-title {
        font-size: 3rem;
        letter-spacing: 5px;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-features,
    .fighters-grid {
        grid-template-columns: 1fr;
    }

    .weight-classes {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* キックボクシングルール - グリッドレイアウトのレスポンシブ */
    .rule-content > div[style*="grid-template-columns"] {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.6rem !important;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .logo-image {
        height: 50px;
    }

    .hero-logo {
        max-width: 320px;
        width: 95%;
    }

    .footer-logo {
        max-width: 200px;
    }

    .logo h1 {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .weight-classes {
        grid-template-columns: 1fr;
    }
    
    .rule-section {
        padding: 1.5rem;
    }
    
    .rule-section h4 {
        font-size: 1.2rem;
    }
    
    .rule-section .numbered-list li::before {
        width: 1.5rem;
        height: 1.5rem;
        font-size: 0.8rem;
        top: 0.6rem;
    }
    
    .rule-section .numbered-list li {
        padding-left: 2.2rem;
    }
    
    /* キックボクシングルール - グリッドレイアウトのレスポンシブ */
    .rule-content > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: 0.5rem !important;
        font-size: 0.85rem;
    }
    
    .rule-content > div[style*="grid-template-columns"] > div {
        padding: 0.6rem !important;
    }
}