/* ========================================
   ヒーローセクション
   ======================================== */

.hero {
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "🎍";
    position: absolute;
    top: 10%;
    left: -5%;
    font-size: 15rem;
    opacity: 0.03;
    transform: rotate(-15deg);
}

.hero::after {
    content: "🌸";
    position: absolute;
    bottom: 10%;
    right: -5%;
    font-size: 12rem;
    opacity: 0.03;
    transform: rotate(25deg);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    margin-bottom: var(--spacing-lg);
}

.hero-title-main {
    display: block;
    font-size: 3rem;
    font-family: var(--font-accent);
    color: var(--color-red);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.hero-title-sub {
    display: block;
    font-size: 2rem;
    font-family: var(--font-accent);
    color: var(--color-pine);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.mandalart-preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    max-width: 400px;
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px var(--color-shadow);
    border: 3px solid var(--color-red);
}

.mandalart-preview-grid .preview-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    background: var(--color-bg);
    transition: all 0.3s ease;
}

.mandalart-preview-grid .preview-cell:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px var(--color-shadow);
}

.mandalart-preview-grid .preview-cell.center {
    background: linear-gradient(135deg, var(--color-gold), var(--color-red));
    color: var(--color-white);
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-title-main {
        font-size: 2rem;
    }

    .hero-title-sub {
        font-size: 1.5rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .mandalart-preview-grid {
        max-width: 300px;
    }
}

/* ========================================
   使い方セクション
   ======================================== */

.how-to-use {
    padding: var(--spacing-2xl) 0;
    background: var(--color-white);
}

.usage-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.usage-card {
    background: var(--color-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    position: relative;
    border: 2px solid var(--color-border);
    transition: all 0.3s ease;
}

.usage-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--color-shadow);
    border-color: var(--color-red);
}

.usage-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-red), var(--color-red-light));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.usage-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-pine);
    margin-bottom: var(--spacing-sm);
}

.usage-description {
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-required {
    background: var(--color-red);
    color: var(--color-white);
}

.badge-optional {
    background: var(--color-gold);
    color: var(--color-text);
}

.usage-note {
    background: linear-gradient(135deg, #FFF9F0, #FFF4E6);
    border: 2px solid var(--color-gold);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.note-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.note-content {
    flex: 1;
}

.note-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-pine);
    margin-bottom: var(--spacing-sm);
}

.note-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.note-list li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
    line-height: 1.6;
}

.note-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-red);
    font-weight: bold;
}

@media (max-width: 768px) {
    .usage-grid {
        grid-template-columns: 1fr;
    }

    .usage-note {
        flex-direction: column;
    }

    .note-icon {
        font-size: 2rem;
    }
}

/* ========================================
   特徴セクション
   ======================================== */

.features {
    padding: var(--spacing-2xl) 0;
    background: var(--color-white);
}

.section-title {
    font-size: 2rem;
    font-family: var(--font-accent);
    color: var(--color-red);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-gold), var(--color-red));
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--color-bg);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px var(--color-shadow);
    border-color: var(--color-red);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-pine);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-text-light);
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   マンダラートとは
   ======================================== */

.about {
    padding: var(--spacing-2xl) 0;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px var(--color-shadow);
    margin-bottom: var(--spacing-xl);
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.about-steps {
    list-style: none;
    counter-reset: step-counter;
    margin: var(--spacing-xl) 0;
}

.about-steps li {
    counter-increment: step-counter;
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
    position: relative;
}

.about-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-red), var(--color-red-light));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
}

.about-steps strong {
    display: block;
    font-size: 1.1rem;
    color: var(--color-red);
    margin-bottom: var(--spacing-xs);
}

.about-steps span {
    color: var(--color-text-light);
}

.about-highlight {
    background: linear-gradient(135deg, var(--color-gold), var(--color-red));
    color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.8;
}

.about-example {
    background: var(--color-pine);
    color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    position: relative;
}

.example-badge {
    display: inline-block;
    background: var(--color-gold);
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: bold;
    margin-bottom: var(--spacing-md);
}

.about-example p {
    line-height: 1.8;
    font-size: 1.05rem;
}

/* ========================================
   CTAセクション
   ======================================== */

.cta {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--color-red), var(--color-red-light));
    color: var(--color-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: "✨";
    position: absolute;
    top: 10%;
    left: 10%;
    font-size: 8rem;
    opacity: 0.1;
}

.cta::after {
    content: "🎯";
    position: absolute;
    bottom: 10%;
    right: 10%;
    font-size: 8rem;
    opacity: 0.1;
}

.cta-title {
    font-size: 2.5rem;
    font-family: var(--font-accent);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.cta-description {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.cta .btn-primary {
    background: var(--color-white);
    color: var(--color-red);
    position: relative;
    z-index: 1;
}

.cta .btn-primary:hover {
    background: var(--color-gold);
    color: var(--color-text);
}

@media (max-width: 768px) {
    .cta-title {
        font-size: 2rem;
    }

    .cta-description {
        font-size: 1rem;
    }
}