/* ==========================================================================
   Design System & Variables
   ========================================================================== */
:root {
    /* Color Palette */
    --primary-color: #6d8c74;       /* Sage Green (Main theme) */
    --primary-light: #8fa895;      /* Light Sage */
    --primary-dark: #4a6350;       /* Dark Sage */
    
    --accent-color: #c7b299;        /* Warm Beige / Gold Accent */
    --accent-light: #e6dfd5;       /* Light Beige */
    --accent-dark: #a18e76;        /* Dark Beige */
    
    --bg-color: #FAF8F5;           /* Soft Warm White */
    --bg-card: #ffffff;            /* Card White */
    --bg-footer: #2b352e;          /* Deep Forest Charcoal */
    
    --text-main: #333d36;          /* Dark Olive Slate (Highly readable text) */
    --text-muted: #6e7a71;         /* Muted Slate */
    --text-light: #ffffff;         /* White Text */
    
    --line-color: #25d366;         /* LINE Brand Color */
    --email-color: #5879a2;        /* Email Color */

    /* Typography */
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Noto Sans JP', 'Montserrat', sans-serif;
    
    /* Layout & Spacing */
    --container-width: 1140px;
    --header-height: 80px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --shadow: 0 10px 30px rgba(109, 140, 116, 0.08);
    --shadow-hover: 0 15px 40px rgba(109, 140, 116, 0.15);
}

/* ==========================================================================
   Base Styles & Reset
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.8;
    color: var(--text-main);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* ==========================================================================
   Utility Components
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.img-responsive {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.rounded-img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-weight: 500;
    border-radius: 50px;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    gap: 8px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(109, 140, 116, 0.3);
}

.btn-secondary {
    background-color: var(--accent-color);
    color: var(--text-light);
}

.btn-secondary:hover {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(199, 178, 153, 0.3);
}

.btn-line {
    background-color: var(--line-color);
    color: var(--text-light);
    font-weight: 600;
}

.btn-line:hover {
    background-color: #20bc5a;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.3);
}

.btn-email {
    background-color: var(--email-color);
    color: var(--text-light);
}

.btn-email:hover {
    background-color: #456287;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(88, 121, 162, 0.3);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--accent-dark);
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--primary-dark);
    font-weight: 600;
}

.section-divider {
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-intro {
    max-width: 700px;
    margin: 20px auto 0;
    color: var(--text-muted);
}

/* ==========================================================================
   Header Navigation
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    display: flex;
    align-items: center;
    z-index: 1000;
    transition: var(--transition);
    background-color: transparent;
}

.site-header.scrolled {
    background-color: rgba(250, 248, 245, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    height: 70px;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-main {
    font-family: var(--font-sans);
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--primary-dark);
}

.logo-sub {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-main);
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 32px;
}

.site-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-main);
    position: relative;
}

.site-nav a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.site-nav a:not(.btn-nav):hover::after {
    width: 100%;
}

.btn-nav {
    padding: 8px 20px;
    font-size: 0.85rem;
    background-color: var(--primary-color);
    color: var(--text-light);
}

.btn-nav:hover {
    background-color: var(--primary-dark);
    transform: none;
    box-shadow: none;
}

/* Nav Mobile Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('./images/hero.png');
    background-size: cover;
    background-position: center;
    z-index: 1;
    transform: scale(1.02);
    animation: slowZoom 20s infinite alternate ease-in-out;
}

@keyframes slowZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.08); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(250, 248, 245, 0.85) 0%, rgba(250, 248, 245, 0.4) 100%);
    z-index: 2;
}

.hero-container {
    position: relative;
    z-index: 3;
    width: 100%;
}

.hero-content {
    max-width: 600px;
}

.hero-subtitle {
    font-size: 0.95rem;
    letter-spacing: 0.15em;
    color: var(--primary-dark);
    font-weight: 500;
    display: block;
    margin-bottom: 15px;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    line-height: 1.25;
    color: var(--text-main);
    margin-bottom: 24px;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-down a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.scroll-text {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-8px) translateX(-50%); }
    60% { transform: translateY(-4px) translateX(-50%); }
}

/* ==========================================================================
   About Section (初めての方へ)
   ========================================================================== */
.about-section {
    padding: 120px 0;
    background-color: var(--bg-card);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-image {
    position: relative;
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 140px;
    height: 140px;
    background-color: var(--accent-light);
    z-index: -1;
    border-radius: var(--border-radius);
}

.about-text h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--primary-dark);
    margin-bottom: 20px;
    line-height: 1.4;
}

.lead-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.features-list {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 16px;
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(109, 140, 116, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.feature-body h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-body p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ISHTA Box */
.ishta-box {
    background-color: var(--bg-color);
    padding: 50px 60px;
    border-radius: var(--border-radius);
    border-left: 5px solid var(--primary-color);
    box-shadow: var(--shadow);
}

.ishta-content h3 {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.ishta-content p {
    margin-bottom: 12px;
}

.ishta-content p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   Instructor Section
   ========================================================================== */
.instructor-section {
    padding: 120px 0;
    background-color: var(--bg-color);
}

.instructor-card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 60px;
    display: flex;
    flex-direction: row;
    gap: 60px;
    align-items: center;
}

.instructor-image {
    flex-shrink: 0;
    width: 280px;
    height: 280px;
}

.instructor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 25% center; /* 枠内で人物の位置を調整（値を大きくすると右側が映り、小さくすると左側が映ります。お好みに応じて%の数値を微調整してください） */
    border-radius: 50%;
}

.instructor-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
    flex-grow: 1;
}

.instructor-role {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-dark);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 4px;
}

.instructor-name {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.instructor-credentials {
    font-size: 0.95rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--accent-light);
    padding-bottom: 20px;
    line-height: 1.6;
}

.instructor-credentials .sub-cred {
    font-size: 0.85rem;
}

.instructor-story {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message-highlight {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-style: italic;
    color: var(--primary-color);
    padding-left: 20px;
    border-left: 3px solid var(--accent-color);
    margin-top: 15px;
    line-height: 1.6;
}

/* ==========================================================================
   Lessons & Pricing Section
   ========================================================================== */
.lessons-section {
    padding: 120px 0;
    background-color: var(--bg-card);
}

.pricing-category-title {
    text-align: center;
    margin-bottom: 40px;
}

.pricing-category-title span {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--accent-dark);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    display: block;
}

.pricing-category-title h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--primary-dark);
    font-weight: 600;
}

.regular-title {
    margin-top: 80px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.pricing-card {
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    padding: 48px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.card-highlight {
    border: 2px solid var(--primary-color);
    background-color: #ffffff;
}

.card-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background-color: var(--primary-color);
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    letter-spacing: 0.1em;
}

.card-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.duration {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    display: block;
}

.card-note {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-top: -10px;
    margin-bottom: 20px;
}

/* Price Box (Trial) */
.price-box {
    display: flex;
    align-items: center;
    background-color: var(--bg-color);
    padding: 15px 24px;
    border-radius: 8px;
    margin-bottom: 24px;
    border: 1px solid var(--accent-light);
}

.card-highlight .price-box {
    background-color: var(--bg-color);
}

.price-item {
    flex: 1;
    text-align: center;
}

.price-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
}

.price-value {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--primary-dark);
}

.price-value .yen {
    font-size: 0.9rem;
    font-weight: 500;
    margin-left: 2px;
}

.price-item-divider {
    width: 1px;
    height: 40px;
    background-color: var(--accent-light);
}

/* Price List (Regular) */
.price-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-radius: 8px;
    background-color: #ffffff;
    border: 1px solid rgba(109, 140, 116, 0.1);
}

.price-row.row-highlight {
    background-color: rgba(199, 178, 153, 0.15);
    border-color: var(--accent-color);
}

.ticket-type {
    font-size: 0.95rem;
}

.ticket-type small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.ticket-price {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-dark);
}

.pricing-card .card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: auto;
    line-height: 1.6;
}

.lessons-footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.lessons-footer i {
    color: var(--accent-dark);
    margin-right: 4px;
}

/* ==========================================================================
   Access & Schedule Section
   ========================================================================== */
.access-section {
    padding: 120px 0;
    background-color: var(--bg-color);
}

.access-card-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.access-card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 48px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.access-card h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--primary-dark);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.access-card h3 i {
    color: var(--accent-dark);
}

.schedule-table {
    margin-bottom: 0;
}

.schedule-row {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--accent-light);
}

.schedule-row:last-child {
    border-bottom: none;
}

.schedule-row.holiday {
    border-bottom-color: var(--primary-color);
}

.schedule-row.holiday .day-label, 
.schedule-row.holiday .time-label {
    color: var(--text-muted);
}

.schedule-row .day-label {
    font-weight: 500;
}

.access-card p {
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.access-card p:last-child {
    margin-bottom: 0;
}

.access-card i {
    width: 24px;
    color: var(--primary-color);
}

.studio-name {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 16px !important;
}

.parking-badge {
    display: inline-block;
    padding: 2px 12px;
    border-radius: 4px;
    background-color: var(--primary-color);
    color: var(--text-light);
    font-size: 0.85rem;
}

.private-note {
    font-size: 0.85rem !important;
    color: var(--primary-color);
    font-weight: 500;
    margin-top: 16px;
    border-top: 1px solid var(--accent-light);
    padding-top: 16px;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-section {
    padding: 120px 0;
    background-color: var(--bg-card);
}

.contact-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 900px;
    margin: 40px auto;
}

.contact-card {
    text-align: center;
    background-color: var(--bg-color);
    padding: 50px 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: var(--transition);
}

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

.contact-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.line-card .contact-icon {
    color: var(--line-color);
}

.email-card .contact-icon {
    color: var(--email-color);
}

.contact-card h3 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    color: var(--text-main);
    margin-bottom: 16px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 30px;
    flex-grow: 1;
}

.email-address {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.contact-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: var(--bg-footer);
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 40px;
    font-size: 0.9rem;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    text-align: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--text-light);
    letter-spacing: 0.1em;
    font-weight: 600;
}

.footer-socials {
    display: flex;
    gap: 20px;
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition);
}

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

.footer-copy {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    padding-top: 30px;
    font-size: 0.8rem;
}

/* ==========================================================================
   Responsive Design Media Queries
   ========================================================================== */
@media (max-width: 991px) {
    .site-header {
        background-color: rgba(250, 248, 245, 0.95);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .site-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-color);
        padding: 40px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: var(--transition);
        z-index: 999;
        overflow-y: auto;
    }
    
    .site-nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .site-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }
    
    .site-nav a {
        font-size: 1.2rem;
    }
    
    .btn-nav {
        padding: 12px 36px;
        font-size: 1rem;
    }
    
    /* Toggle Hamburger Animation */
    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* Hero */
    .hero-title {
        font-size: 2.8rem;
    }
    
    /* Grid adjustments */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image {
        max-width: 500px;
        margin: 0 auto;
    }

    .instructor-card {
        flex-direction: column;
        gap: 40px;
        padding: 40px;
    }

    .instructor-image {
        width: 240px;
        height: 240px;
        margin: 0 auto;
    }
    
    .access-card-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 767px) {
    :root {
        --header-height: 70px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .about-section, 
    .instructor-section, 
    .lessons-section, 
    .access-section, 
    .contact-section {
        padding: 80px 0;
    }
    
    .ishta-box {
        padding: 30px;
    }
    
    .instructor-card {
        padding: 30px;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .pricing-card {
        padding: 30px;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .contact-card {
        padding: 40px 24px;
    }
}