:root {
    --bg-color: #fafafa;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --primary-color: #6d28d9;
    --primary-light: #8b5cf6;
    --accent-color: #ec4899;
    --accent-light: #f472b6;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.8);
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --font-main: 'Noto Sans JP', 'Inter', sans-serif;
    --nav-height: 80px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

/* Glassmorphism Utilities */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

/* Typography */
.text-gradient {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: #111827;
}

.text-left {
    text-align: left;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 30px;
    font-weight: 700;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(236, 72, 153, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(236, 72, 153, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-light);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.btn-outline:hover {
    background: rgba(139, 92, 246, 0.05);
}

.full-width {
    width: 100%;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}

.nav-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Inter', sans-serif;
    color: #111827;
}

.logo span {
    font-weight: 400;
    color: var(--primary-light);
}

.nav-links a {
    margin: 0 1rem;
    font-weight: 600;
    color: #4b5563;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .desktop-only {
        display: none;
    }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--nav-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('./assets/hero_bg_light.png');
    background-size: cover;
    background-position: center;
    opacity: 0.8;
    z-index: -1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 30%;
    background: linear-gradient(to top, var(--bg-color), transparent);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    background: rgba(255,255,255,0.4);
    backdrop-filter: blur(10px);
    padding: clamp(1.75rem, 4vw, 3rem);
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.6);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.badge {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: white;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.hero-title {
    font-size: clamp(2rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 1.5rem;
    word-break: keep-all;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.2vw, 1.25rem);
    color: #4b5563;
    margin-bottom: 2.5rem;
    font-weight: 500;
}

.cta-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.cta-note {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.cta-note a {
    color: var(--primary-color);
    text-decoration: underline;
    font-weight: bold;
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--text-color);
    border-radius: 12px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--text-color);
    border-radius: 50%;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 15px); opacity: 0; }
}

/* Sections */
.section {
    padding: 6rem 0;
}

/* Concerns */
.concerns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.concerns .icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 1rem;
}

.concerns .glass-card {
    background: white;
    border-color: rgba(0,0,0,0.05);
}

.solution-text {
    margin-top: 3rem;
    text-align: center;
    font-size: 1.25rem;
    padding: 1.5rem;
    background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.05), transparent);
    border-radius: 8px;
    color: #1f2937;
}

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

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

.feature-card {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: #111827;
}

/* Curriculum */
.curriculum-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.curriculum-list {
    list-style: none;
    margin-top: 2rem;
}

.curriculum-list li {
    padding: 1.5rem;
    margin-bottom: 1rem;
    background: white;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.curriculum-list li:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 15px rgba(0,0,0,0.05);
    border-color: var(--primary-light);
}

.curriculum-list strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    color: #111827;
}

.curriculum-list span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.text-content {
    flex: 1;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.image-content {
    flex: 1;
}

.image-content img {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 20px 30px rgba(0,0,0,0.05));
    border-radius: 20px;
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

@media (max-width: 900px) {
    .curriculum-content {
        flex-direction: column;
    }
}

/* Pricing */
.pricing {
    background-color: white;
}

.campaign-banner {
    text-align: center;
    background: rgba(236, 72, 153, 0.05);
    border: 2px dashed rgba(236, 72, 153, 0.3);
    padding: 1.5rem;
    border-radius: 16px;
    margin: 2rem auto;
    max-width: 600px;
}

.campaign-tag {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: bold;
    margin-bottom: 0.8rem;
    box-shadow: 0 4px 10px rgba(236, 72, 153, 0.3);
}

.campaign-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 12px;
    margin: 0.5rem auto 1rem;
    display: block;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.campaign-banner p {
    font-size: 1.25rem;
    color: #111827;
}

.campaign-banner .arrow {
    color: var(--text-muted);
    margin: 0 0.5rem;
}

.campaign-banner .free-line {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    margin-top: 0.4rem;
}

.campaign-banner .highlight {
    color: var(--accent-color);
    font-size: 1.75rem;
    font-weight: 800;
    white-space: nowrap;
}

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

.pricing-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: #fafafa;
}

.pricing-card.premium {
    background: white;
    border: 2px solid var(--accent-light);
    box-shadow: 0 20px 40px rgba(236, 72, 153, 0.1);
}

.badge-popular {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    color: white;
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.35);
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #111827;
    text-align: center;
}

.plan-type {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
}

.pricing-card .desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.plan-meta {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--primary-color);
    background: rgba(109, 40, 217, 0.08);
    border: 1px solid rgba(109, 40, 217, 0.12);
    border-radius: 999px;
    padding: 0.45rem 0.8rem;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.plan-price {
    width: 100%;
    color: #111827;
    font-size: 2rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.plan-price span {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 700;
    margin-left: 0.25rem;
}

.features-list {
    list-style: none;
    margin-bottom: 2rem;
    flex-grow: 1;
    text-align: left;
    display: inline-block;
}

.features-list li {
    position: relative;
    padding-left: 1.8rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.features-list li::before {
    content: '🌸';
    position: absolute;
    left: 0;
    top: -2px;
    font-size: 0.9em;
}

.pricing .note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 3rem;
}

/* Instructor */
.instructor-card {
    display: flex;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
    background: white;
    align-items: center;
}

.instructor-image {
    flex-shrink: 0;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border: 4px solid var(--glass-bg);
    margin: 0 auto;
}

.profile-pic {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instructor-info {
    flex: 1;
}

@media (max-width: 768px) {
    .instructor-card {
        flex-direction: column;
        text-align: center;
    }
    
    .instructor-info .section-title {
        text-align: center !important;
    }
}

.career {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
}

.message-box {
    background: rgba(139, 92, 246, 0.05);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.message-box p {
    margin-bottom: 0.5rem;
}

/* FAQ Accordion */
.accordion {
    max-width: 800px;
    margin: 3rem auto 0;
}

.accordion-item {
    margin-bottom: 1rem;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 12px;
    overflow: hidden;
    background: white;
    box-shadow: var(--card-shadow);
}

.accordion-header {
    width: 100%;
    text-align: left;
    padding: 1.5rem;
    background: transparent;
    border: none;
    color: #111827;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-header:hover {
    background: rgba(0,0,0,0.02);
}

.accordion-header .icon {
    font-size: 1.5rem;
    transition: transform 0.3s;
    color: var(--primary-color);
}

.accordion-item.active .accordion-header .icon {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease;
    padding: 0 1.5rem;
    color: var(--text-muted);
    font-weight: 500;
}

.accordion-item.active .accordion-content {
    padding: 0 1.5rem 1.5rem;
}

/* Footer */
.footer {
    border-top: 1px solid rgba(0,0,0,0.05);
    padding: 4rem 0 2rem;
    background: #111827;
    color: white;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-info h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: white;
}

.footer-info p {
    color: #9ca3af;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.footer-info a {
    color: #d1d5db;
    transition: color 0.3s;
}

.footer-info a:hover {
    color: white;
    text-decoration: underline;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: #9ca3af;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    color: #6b7280;
    font-size: 0.85rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
}

/* Animation Utilities */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }