/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #32373c;
    --secondary-color: #32373c;
    --accent-color: #f8f9fa;
    --success-color: #50C878;
    --warning-color: #FFD700;
    --text-color: #333333;
    --text-light: #666666;
    --background-color: #FFFFFF;
    --background-light: #f8f9fa;
    --border-color: #e9ecef;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    --border-radius: 9999px;
    --font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', sans-serif;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    line-height: 1.8;
    background-color: var(--background-color);
    font-size: 16px;
    font-weight: 400;
}

/* Header */
.header {
    background: white !important;
    color: var(--text-color) !important;
    padding: 1.5rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    font-size: 1.6rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-color) !important;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-image {
    height: 120px;
    width: auto;
}

.logo-text {
    color: var(--text-color) !important;
}

.nav {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav a {
    color: var(--text-color) !important;
    text-decoration: none;
    font-weight: 400;
    transition: opacity 0.3s ease;
    font-size: 0.95rem;
}

.nav a:hover {
    opacity: 0.8;
}

.mobile-menu {
    display: none;
    background: none;
    border: none;
    color: var(--text-color) !important;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Main content */
.main {
    min-height: calc(100vh - 160px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Section spacing improvements */
.section + .section {
    border-top: 1px solid var(--border-color);
}

/* Hero section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/home-kv.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: 8rem 0 6rem;
    text-align: center;
    margin-top: 80px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(50, 55, 60, 0.8), rgba(50, 55, 60, 0.6));
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    color: white;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    color: rgba(255, 255, 255, 0.95);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary {
    background-color: var(--secondary-color);
    border: 2px solid #f8f9fa;
}

.btn-outline {
    background-color: rgba(255, 255, 255, 0.1);
    border: 2px solid #f8f9fa;
    color: #f8f9fa;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.btn-outline:hover {
    background-color: white;
    color: var(--text-color);
    transform: translateY(-1px);
}

/* Sections */
.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

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

.card-icon {
    width: 70px;
    height: 70px;
    background: var(--background-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 1.2rem;
    color: var(--text-color);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.card p {
    color: var(--text-light);
    line-height: 1.8;
    font-size: 0.95rem;
}

    
/* Fix list indentation in cards */
.card ul {
    padding-left: 0 !important;
    margin-left: 0 !important;
}

.card li {
    list-style-position: inside !important;
    padding-left: 0 !important;
    margin-left: 0 !important;
}

/* Fix list indentation in course detail sections */
[style*="line-height: 1.8"] {
    padding-left: 0 !important;
    margin-left: 0 !important;
}

[style*="line-height: 1.8"] li {
    list-style-position: inside !important;
    padding-left: 0 !important;
    margin-left: 0 !important;
}

/* Features */
.features {
    background-color: var(--background-light);
}

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

.feature-item {
    text-align: center;
    padding: 2.5rem;
}

.feature-icon {
    width: 90px;
    height: 90px;
    background: var(--background-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.2rem;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

/* Stats */
.stats {
    background: var(--background-light);
    color: var(--text-color);
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* Footer */
.footer {
    background-color: var(--text-color);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
    color: white;
}

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

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

.footer-section ul li a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--text-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    opacity: 0.8;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8);
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-2px) scale(1);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

@media (min-width: 769px) {
    .back-to-top {
        display: none !important;
    }

    /* 1行→2行にレイアウト変更 */
    .header-container{
        flex-direction: column;   /* 上：ロゴ　下：ナビ */
        align-items: flex-start;  /* 左寄せ。中央揃えにしたい場合は center */
    }

    /* ロゴとナビの間に少し余白 */
    .header-container .logo{
        margin-bottom: .6rem;
    }

    /* ナビゲーション調整 */
    .header-container .nav{
        width: 100%;          /* ナビを横いっぱいに */
        justify-content: center; /* お好みで space-between 等に変更可 */
        flex-wrap: wrap;      /* 画面幅が足りない場合は折り返し */
        gap: 1.5rem;          /* 項目間をやや詰める */

        /* モバイル用で付与している absolute などを打ち消す */
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        border: none;
        box-shadow: none;
        padding: 0;
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .header {
        position: static !important;
        box-shadow: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .main {
        margin-top: 0;
    }
    
    .hero {
        margin-top: 0;
    }
    
    /* Course detail sections - SP optimization */
    [style*="grid-template-columns: 1fr 2fr"] {
        display: grid !important;
        grid-template-columns: 1fr !important;
        gap: 1.5rem !important;
        text-align: left !important;
    }
    
    [style*="width: 150px; height: 150px"] {
        width: 100px !important;
        height: 100px !important;
        font-size: 2.5rem !important;
        margin: 0 0 1rem 0 !important;
        border-radius: 0 !important;
    }
    
    /* Course section icon containers */
    [style*="text-align: center"] {
        text-align: left !important;
    }
    
    [style*="font-size: 1.1rem"] {
        font-size: 1rem !important;
    }
    
    /* Course grid improvements */
    .learning-steps [style*="grid-template-columns: repeat(auto-fit, minmax(300px, 1fr))"] {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }
    
    [style*="grid-template-columns: repeat(auto-fit, minmax(200px, 1fr))"] {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 1rem !important;
    }
    
    [style*="grid-template-columns: repeat(auto-fit, minmax(250px, 1fr))"] {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }
    
    /* Course page specific padding adjustments */
    [style*="padding: 3rem"] {
        padding: 2rem 1.5rem !important;
    }
    
    [style*="padding: 2rem"] {
        padding: 1.5rem !important;
    }
    
    /* Gap adjustments for course sections */
    [style*="gap: 3rem"] {
        gap: 1.5rem !important;
    }
    
    /* Course icon container adjustments */
    [style*="width: 80px; height: 80px"] {
        width: 60px !important;
        height: 60px !important;
        font-size: 1.5rem !important;
        border-radius: 0 !important;
    }
    
    /* Remove border-radius from elements with var(--border-radius) */
    [style*="border-radius: var(--border-radius)"] {
        border-radius: 0 !important;
    }

    /* アクセスページのSP表示改善 */
    .grid-2-columns,
    .grid-3-columns,
    .grid-2-columns-400 {
        grid-template-columns: 1fr !important;
        gap: 1.5rem !important;
    }

    .card-white,
    .card-white-no-margin {
        padding: 1.5rem !important;
        border-radius: 0 !important;
        margin-bottom: 1.5rem !important;
    }

    .bg-gradient-blue {
        padding: 1.5rem !important;
        border-radius: 0 !important;
    }

    .info-card,
    .access-card,
    .contact-card {
        padding: 1.5rem !important;
        margin-bottom: 1rem !important;
    }

    .schedule-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    .map-container {
        padding: 1rem !important;
    }

    .map-placeholder {
        padding: 1.5rem !important;
    }

    .section-title {
        font-size: 1.8rem !important;
        margin-bottom: 1rem !important;
    }

    .section-subtitle-center {
        font-size: 1.2rem !important;
        margin-bottom: 1.5rem !important;
    }

    .location-title,
    .access-title,
    .access-title-secondary {
        font-size: 1.3rem !important;
        margin-bottom: 1rem !important;
    }

    .info-value,
    .info-value-secondary,
    .info-value-success {
        font-size: 1.2rem !important;
    }

    .warning-card {
        padding: 1.5rem !important;
        border-radius: 0 !important;
    }

    .warning-grid {
        display: grid !important;
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
        text-align: center !important;
    }

    .warning-icon {
        font-size: 1.8rem !important;
        margin-bottom: 0.5rem !important;
    }

    .direction-step {
        padding: 1rem !important;
        margin-bottom: 0.8rem !important;
        border-radius: 4px !important;
    }

    /* ボタンのスペーシング調整 */
    .btn {
        display: block !important;
        width: 100% !important;
        margin-bottom: 1rem !important;
        padding: 0.8rem 1.5rem !important;
        text-align: center !important;
    }

    /* CTAセクションの調整 */
    .section.bg-primary .container {
        padding: 0 1rem !important;
    }

    .section.bg-primary .section-title {
        font-size: 1.5rem !important;
    }

    .section.bg-primary .section-subtitle {
        font-size: 1rem !important;
        margin-bottom: 1.5rem !important;
    }
    
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        border-top: 1px solid var(--border-color);
        flex-direction: column;
        padding: 1rem 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav li {
        margin: 0.5rem 0;
        text-align: center;
    }

    .mobile-menu {
        display: block;
    }

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

    .hero p {
        font-size: 1.1rem;
    }

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

    .cards {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 1rem;
    }

    /* Additional mobile styles */
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    /* Form adjustments */
    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
    }

    /* Button adjustments */
    .btn {
        width: 100%;
        margin-bottom: 1rem;
    }

    /* Grid adjustments for smaller screens */
    [style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    [style*="grid-template-columns: repeat(auto-fit, minmax(250px, 1fr))"] {
        grid-template-columns: 1fr !important;
    }

    [style*="grid-template-columns: repeat(auto-fit, minmax(300px, 1fr))"] {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0 1rem;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .section {
        padding: 3rem 0;
    }

    .card {
        padding: 1.5rem;
    }

    .feature-item {
        padding: 1.5rem;
    }

    /* Text adjustments */
    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* Stats grid for very small screens */
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    /* 共通レイアウトのスマートフォン対応 */
    .card-white,
    .card-white-no-margin {
        padding: 1.5rem !important;
        border-radius: 0 !important;
        margin-bottom: 1.5rem !important;
    }

    .grid-2-columns,
    .grid-3-columns,
    .grid-2-columns-400 {
        grid-template-columns: 1fr !important;
        gap: 1.5rem !important;
    }

    .bg-gradient-blue {
        padding: 1.5rem !important;
        border-radius: 0 !important;
    }

    .section-subtitle-center {
        font-size: 1.2rem !important;
        margin-bottom: 1.5rem !important;
    }
    
    /* 講師紹介セクションのスマートフォン対応 */
    .instructor-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .instructor-avatar {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }
    
    .instructor-qualifications,
    .instructor-skills {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .instructor-section-title {
        font-size: 1.2rem;
    }
    
    .instructor-subsection-title {
        font-size: 1.1rem;
    }
}

/* Utility classes */
.text-center {
    text-align: center;
}

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.bg-light {
    background-color: var(--background-light);
}

.bg-primary {
    background-color: var(--primary-color);
    color: white;
}

.text-white {
    color: #f8f9fa;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

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

.text-secondary {
    color: var(--secondary-color);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 共通レイアウト用のスタイル */
.card-white {
    background: white;
    padding: 3rem;
    box-shadow: var(--shadow);
    margin-bottom: 3rem;
}

.card-white-no-margin {
    background: white;
    padding: 3rem;
    box-shadow: var(--shadow);
}

.grid-2-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

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

.grid-2-columns-400 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.bg-gradient-blue {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(123, 104, 238, 0.1));
    padding: 3rem;
    margin-bottom: 3rem;
}

.section-subtitle-center {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

/* 講師紹介セクション用のスタイル */
.instructor-profile {
    max-width: 1000px;
    margin: 0 auto;
}

.instructor-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 3rem;
    align-items: start;
}

.instructor-profile-image {
    text-align: center;
}

.instructor-avatar {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    margin: 0 auto 1rem;
}

.profile-image {
    width: 125%;
    height: 125%;
    object-fit: cover;
    border-radius: 50%;
}

.instructor-name {
    margin: 0;
    color: var(--primary-color);
}

.instructor-title {
    margin: 0.5rem 0 0;
    color: var(--text-light);
}

.instructor-section-title {
    margin-bottom: 1rem;
}

.instructor-history {
    margin-bottom: 2rem;
    line-height: 1.8;
    padding-left: 0;
    list-style-position: inside;
}

.instructor-highlight {
    background: var(--background-light);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.instructor-qualifications,
.instructor-skills {
    margin-bottom: 2rem;
}

.instructor-subsection-title {
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.instructor-list {
    line-height: 1.6;
    padding-left: 0;
    list-style-position: inside;
}

.instructor-philosophy {
    line-height: 1.8;
    margin-bottom: 1rem;
    padding-left: 0;
    list-style-position: inside;
}

.instructor-quote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    margin: 1rem 0;
    font-style: italic;
    color: var(--text-color);
}

/* Form styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

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