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

:root {
    /* カラーパレット */
    --color-primary: #1a1a1a;
    --color-accent: #7ed321;
    --color-bg: #ffffff;
    --color-bg-dark: #0f0f0f;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    
    /* タイポグラフィ */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-accent: 'Outfit', sans-serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* トランジション */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* =====================================
   ナビゲーション
===================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: background var(--transition);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-menu a:hover {
    color: var(--color-accent);
}

.nav-cta {
    background: var(--color-primary);
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 30px;
    transition: all var(--transition);
}

.nav-cta:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    transition: all var(--transition);
}

/* =====================================
   ヒーローセクション
===================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/hero-bg.jpg') center/cover no-repeat;
    z-index: 0;
}

.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    max-width: 900px;
    padding: 0 var(--spacing-md);
}

.hero-label {
    font-family: var(--font-accent);
    font-size: 0.85rem;
    letter-spacing: 3px;
    font-weight: 600;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 2rem;
}

.hero-title-line {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title-line:nth-child(2) {
    animation-delay: 0.2s;
}

.hero-text {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-hero {
    background: var(--color-accent);
    color: var(--color-primary);
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(126, 211, 33, 0.4);
}

.btn-text {
    color: white;
    font-weight: 600;
    position: relative;
}

.btn-text::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: white;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition);
}

.btn-text:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.hero-scroll {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: white;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

.hero-scroll span {
    font-size: 0.75rem;
    letter-spacing: 2px;
    font-family: var(--font-accent);
}

.hero-scroll-line {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.5);
    animation: scrollLine 2s ease-in-out infinite;
}

/* =====================================
   セクション共通
===================================== */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 2rem;
}

.section-title-center {
    text-align: center;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: 3rem;
}

.section-title-center-white {
    text-align: center;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    margin-bottom: 3rem;
    color: white;
}

.section-label,
.section-label-white {
    display: block;
    font-family: var(--font-accent);
    font-size: 0.85rem;
    letter-spacing: 3px;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-accent);
}

.section-label-white {
    color: rgba(255,255,255,0.7);
}

/* =====================================
   ピックルボール
===================================== */
.pickleball {
    background: #fafafa;
}

.pickleball-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.pickleball-description {
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 3rem;
}

.pickleball-description p:not(:last-child) {
    margin-bottom: 1.5rem;
}

.pickleball-features {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.pickleball-feature h3 {
    font-family: var(--font-accent);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-accent);
}

.pickleball-feature p {
    color: var(--color-text-light);
}

.pickleball-intro-visual {
    position: sticky;
    top: 120px;
}

.pickleball-image-placeholder {
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, #e0e0e0 0%, #f5f5f5 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 0.9rem;
}

.pickleball-image {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

/* =====================================
   About
===================================== */
.about {
    background: white;
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-visual {
    order: 2;
}

.about-image {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.about-text {
    order: 1;
}

.about-description {
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 3rem;
}

.about-description p:not(:last-child) {
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.about-stat {
    text-align: center;
    padding: 1.5rem;
    background: #fafafa;
    border-radius: 8px;
}

.about-stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.about-stat-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* =====================================
   Experience
===================================== */
.experience {
    background: white;
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.experience-item-large {
    grid-column: span 2;
    grid-row: span 2;
}

.experience-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    background: #fafafa;
}

.experience-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.experience-item:hover img {
    transform: scale(1.05);
}

.experience-image-placeholder {
    aspect-ratio: 1;
    background: linear-gradient(135deg, #e0e0e0 0%, #f5f5f5 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 0.9rem;
}

.experience-item-large .experience-image-placeholder {
    aspect-ratio: 16/9;
}

.experience-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    color: white;
}

.experience-caption h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.experience-caption p {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* =====================================
   Beginner
===================================== */
.beginner {
    background: #fafafa;
}

.beginner-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
    font-size: 1.15rem;
    line-height: 1.9;
}

.beginner-intro p:not(:last-child) {
    margin-bottom: 1rem;
}

.beginner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.beginner-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 10px;
    text-align: center;
    transition: all var(--transition);
}

.beginner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.beginner-card-icon {
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    margin: 0 auto 1.5rem;
}

.beginner-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.beginner-card p {
    color: var(--color-text-light);
    line-height: 1.7;
}

.beginner-needs {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
}

.beginner-needs h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.beginner-needs ul {
    list-style: none;
}

.beginner-needs li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    line-height: 1.7;
}

.beginner-needs li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* =====================================
   Join
===================================== */
.join {
    background: var(--color-bg-dark);
    color: white;
}

.join-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
    font-size: 1.3rem;
    line-height: 1.9;
    opacity: 0.9;
}

.join-flow {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1rem;
    margin-bottom: 4rem;
    align-items: start;
}

.join-step {
    grid-column: span 1;
    text-align: center;
}

.join-step:nth-child(1) { grid-column: 1 / 2; }
.join-step:nth-child(3) { grid-column: 3 / 4; }
.join-step:nth-child(5) { grid-column: 5 / 6; }
.join-step:nth-child(7) { grid-column: 7 / 8; }

.join-step-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--color-accent);
    align-self: center;
}

.join-step-number {
    font-family: var(--font-accent);
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.join-step h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.join-step p {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.6;
}

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

.join-info-item {
    background: rgba(255,255,255,0.05);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
}

.join-info-item h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--color-accent);
}

.join-info-item p {
    line-height: 1.7;
}

.join-info-item small {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* =====================================
   Contact
===================================== */
.contact {
    background: white;
}

.contact-intro {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.05rem;
    color: var(--color-text-light);
}

.contact-form {
    margin-bottom: 3rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition);
}

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

.btn-submit {
    width: 100%;
    background: var(--color-primary);
    color: white;
    padding: 1.25rem;
    font-size: 1.05rem;
}

.btn-submit:hover {
    background: var(--color-accent);
    color: var(--color-primary);
}

.contact-social {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.contact-social p {
    margin-bottom: 1rem;
    color: var(--color-text-light);
}

.contact-social-icons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.contact-social-icons a {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--color-border);
    border-radius: 30px;
    font-weight: 600;
    transition: all var(--transition);
}

.contact-social-icons a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* =====================================
   Footer
===================================== */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: 3rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
    height: 60px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-brand p {
    opacity: 0.7;
    line-height: 1.7;
}

.footer-nav {
    display: flex;
    gap: 2rem;
}

.footer-nav a {
    font-size: 0.95rem;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.footer-nav a:hover {
    opacity: 1;
}

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

.footer-bottom p {
    font-size: 0.85rem;
    opacity: 0.6;
}

/* =====================================
   モバイル固定CTA
===================================== */
.mobile-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: white;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    padding: 1rem;
}

.mobile-cta-btn {
    display: block;
    width: 100%;
    background: var(--color-accent);
    color: var(--color-primary);
    text-align: center;
    padding: 1rem;
    border-radius: 30px;
    font-weight: 700;
}

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

@keyframes scrollLine {
    0%, 100% {
        transform: scaleY(0);
        transform-origin: top;
    }
    50% {
        transform: scaleY(1);
        transform-origin: top;
    }
}

/* =====================================
   レスポンシブ
===================================== */
@media (max-width: 1024px) {
    .pickleball-intro,
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-visual {
        order: 1;
    }
    
    .about-text {
        order: 2;
    }
    
    .experience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .join-flow {
        grid-template-columns: 1fr;
    }
    
    .join-step {
        grid-column: 1 !important;
    }
    
    .join-step-arrow {
        transform: rotate(90deg);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 4rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateX(-100%);
        transition: transform var(--transition);
        box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .experience-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-item-large {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .beginner-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .mobile-cta {
        display: block;
    }
}