/* 基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background-color: #fafafa;
    font-weight: 400;
}

.course-title-red {
    color: #ff0000;
    font-family: "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN",
                 "游明朝", "Yu Mincho",
                 "MS P明朝", "MS PMincho",
                 serif;
}

.price-main-red {
    color: #ff0000;
}

.course-detail-gold {
    color: #ffffff;
}

.text-gold {
    color: #FFD700;
}

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

/* ヘッダー */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    z-index: 1000;
    box-shadow: 0 1px 30px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    color: #1a1a1a;
}

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

.nav-list a {
    text-decoration: none;
    color: #1a1a1a;
    font-weight: 400;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    transition: all 0.3s ease;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: #1a1a1a;
    transition: width 0.3s ease;
}

.nav-list a:hover {
    color: #1a1a1a;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* メインビジュアル */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background:
        linear-gradient(135deg, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.9)),
        url('christmas4.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.3;
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 215, 0, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 215, 0, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 215, 0, 0.03) 0%, transparent 50%);
    animation: float 30s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    color: white;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    padding: 0.75rem 2rem;
    border-radius: 50px;
    margin-bottom: 3rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-title {
    margin-bottom: 2rem;
}

.title-main {
    display: block;
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 0 18px rgba(217, 179, 108, 0.45);
    color: #D9B36C;
    letter-spacing: 0.08em;
    line-height: 1.1;
    font-family: "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN",
                 "游明朝", "Yu Mincho",
                 "MS PMincho", serif;
}

.title-sub {
    display: block;
    font-size: 1.3rem;
    font-weight: 500;
    opacity: 1;
    letter-spacing: 0.05em;
    font-family: "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN",
                 "游明朝", "Yu Mincho",
                 "MS PMincho", serif;
    color: #FF7FBF;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 4rem;
    opacity: 1;
    line-height: 1.8;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: #ffffff;
}

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

.btn {
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 50px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.4s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: #1a1a1a;
    color: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    background: #2d2d2d;
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-card {
    background: #ffffff;
    color: #D9B36C;
    width: 100%;
    border: 1px solid #D9B36C;
}

.btn-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    background: #f7f7f7;
}

.btn-full {
    width: 100%;
}

/* カウントダウン */
.countdown {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.countdown-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    padding: 2rem;
    border-radius: 15px;
    min-width: 90px;
    border: 1px solid rgba(255, 215, 0, 0.2);
}

.countdown-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 200;
    margin-bottom: 0.5rem;
    color: #FFD700;
    letter-spacing: 0.05em;
}

.countdown-label {
    font-size: 0.9rem;
    opacity: 0.7;
    font-weight: 300;
    letter-spacing: 0.05em;
}

/* セクション共通 */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.campaign-cta {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.campaign-cta .btn-primary {
    color: #FFD700;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #D9B36C;
    letter-spacing: 0.08em;
    font-family: "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN",
                 "游明朝", "Yu Mincho",
                 "MS PMincho", serif;
}

.section-subtitle {
    font-size: 1.3rem;
    color: #333;
    font-weight: 600;
    letter-spacing: 0.02em;
    font-family: "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN",
                 "游明朝", "Yu Mincho",
                 "MS PMincho", serif;
}

/* キャンペーンセクション */
.campaign {
    background: linear-gradient(135deg, #fafafa 0%, #f0f0f0 100%);
}

.campaign-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.campaign-card {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 5px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.campaign-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 60px rgba(0, 0, 0, 0.12);
}

.campaign-card.featured {
    background: #1a1a1a;
    color: white;
    transform: scale(1.05);
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.campaign-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.2);
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
}

.card-icon img {
    width: 130px;   /* 画像そのものの大きさだけ指定 */
    height: auto;
}

.campaign-card.featured .card-icon {
    backdrop-filter: blur(10px);
}

.campaign-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 300;
    letter-spacing: 0.05em;
}

.campaign-card p {
    margin-bottom: 2rem;
    opacity: 0.7;
    font-weight: 300;
    line-height: 1.6;
}

.card-features {
    list-style: none;
    margin-bottom: 2.5rem;
    text-align: center;
    background-color: #ffffff;
    padding: 16px;
    border-radius: 8px;
    color: #000000;
}

.card-features li {
    padding: 0.75rem 0;
    position: relative;
    padding-left: 0;
    font-weight: 300;
    opacity: 0.8;
    margin-bottom: 8px;
}

.card-features li:last-child {
    margin-bottom: 0;
}

.card-features li::before {
    content: "";
}

.card-features strong {
    color: #D9B36C;
    font-weight: 500;
    font-size: 1.1rem;
}

.card-features .course-detail-gold {
color: #000000;
}

.card-features .text-gold {
color: #8b4513;
}

.card-features strong.price-main-red {
color: #ff0000;
}

.card-features li.no-check::before {
    content: "";
}

.card-features .label-highlight {
    color: #F2D27A;
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 1.3rem;
}

.label-highlight-red {
    color: #ff0000;
}

/* label-highlight と併用されたときに確実に赤を優先 */
.card-features .label-highlight.label-highlight-red {
    color: #ff0000;
    background-color: #ffffff;
    padding: 0.2em 0.5em;
    border-radius: 0.4em;
    display: inline-block;
}

.campaign-card.featured .card-features li::before {
    color: #FFD700;
}

/* 特典セクション */
.benefits {
    background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
}

.benefits-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.benefits-image {
    text-align: center;
}

.image-placeholder {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 4rem;
    color: #FFD700;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.benefits-list {
    display: grid;
    gap: 2.5rem;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.benefit-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(45deg, #FFD700, #FFA500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.3);
}

.benefit-text h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: #1a1a1a;
}

.benefit-text p {
    color: #666;
    opacity: 0.7;
    font-weight: 300;
    line-height: 1.6;
}

/* スケジュールセクション */
.schedule {
    background: linear-gradient(135deg, #fafafa 0%, #f0f0f0 100%);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #FFD700, #FFA500);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 30px;
    position: relative;
    margin: 2rem 0;
    width: 50%;
}

.timeline-item:nth-child(even) {
    align-self: flex-end;
    justify-content: flex-start;
    padding-left: 30px;
    padding-right: 0;
    margin-left: 50%;
}

.timeline-item.active::before {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    width: 16px;
    height: 16px;
    background: #FFD700;
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.2);
}

.timeline-item:nth-child(even).active::before {
    left: -8px;
    right: auto;
}

.timeline-date {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.date {
    display: block;
    font-weight: 300;
    font-size: 1.3rem;
    color: #1a1a1a;
    letter-spacing: 0.05em;
}

.day {
    display: block;
    font-size: 0.9rem;
    color: #666;
    opacity: 0.7;
    font-weight: 300;
}

.timeline-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.timeline-content h4 {
    margin-bottom: 0.5rem;
    color: #1a1a1a;
    font-weight: 300;
    letter-spacing: 0.02em;
}

.timeline-content p {
    color: #666;
    opacity: 0.7;
    font-weight: 300;
    line-height: 1.6;
}

/* お問い合わせセクション */
.contact {
    background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: grid;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(45deg, #1a1a1a, #2d2d2d);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFD700;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.contact-text h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: #1a1a1a;
}

.contact-text p {
    font-weight: 400;
    margin-bottom: 0.25rem;
    color: #1a1a1a;
    font-size: 1.1rem;
}

.contact-time {
    font-size: 0.9rem;
    color: #666;
    opacity: 0.7;
    font-weight: 300;
}

.contact-form {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1.25rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    background: #fafafa;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 300;
    transition: all 0.3s ease;
    color: #1a1a1a;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #FFD700;
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
    background: white;
}

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

/* フッター */
.footer {
    background: #1a1a1a;
    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,
.footer-section h4 {
    margin-bottom: 1rem;
    font-weight: 300;
    letter-spacing: 0.05em;
}

.footer-section h3 {
    font-size: 1.5rem;
    color: #FFD700;
}

.footer-section h4 {
    font-size: 1.2rem;
    color: white;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 300;
    letter-spacing: 0.02em;
}

.footer-section a:hover {
    color: #FFD700;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-links a:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: #FFD700;
    color: #FFD700;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-weight: 300;
    letter-spacing: 0.02em;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero {
        min-height: 70vh;
        padding: 1.25rem 0;
    }
    
    .title-main {
        font-size: 2.2rem;
    }
    
    .title-sub {
        font-size: 1.1rem;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 2.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .countdown {
        gap: 1rem;
    }
    
    .countdown-item {
        min-width: 60px;
        padding: 1rem;
    }
    
    .countdown-number {
        font-size: 2rem;
    }
    
    .campaign-grid {
        grid-template-columns: 1fr;
    }
    
    .campaign-card.featured {
        transform: none;
    }
    
    .benefits-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 0;
        margin-left: 0;
    }
    
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        margin-left: 0;
    }
    
    .timeline-item.active::before,
    .timeline-item:nth-child(even).active::before {
        left: 12px;
        right: auto;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    section {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .title-main {
        font-size: 2rem;
    }
    
    .title-sub {
        font-size: 1rem;
    }
    
    .hero-badge {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0.75rem 1rem;
    }
    
    .campaign-card {
        padding: 2rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .countdown {
        gap: 0.5rem;
    }
    
    .countdown-item {
        min-width: 50px;
        padding: 0.75rem;
    }
    
    .countdown-number {
        font-size: 1.5rem;
    }
    
    .countdown-label {
        font-size: 0.8rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* スムーススクロール */
html {
    scroll-behavior: smooth;
}

/* 選択テキストのスタイル */
::selection {
    background: rgba(255, 107, 107, 0.2);
    color: #333;
}

/* フォーカススタイル */
:focus {
    outline: 2px solid #ff6b6b;
    outline-offset: 2px;
}