/* ========================================
   アプリで学習ページ専用スタイル
   ======================================== */

/* 学習ヒーローセクション */
.learning-hero {
    padding: 140px 0 var(--spacing-6xl);
    margin-top: 80px;
    margin-bottom: 0;
    background: linear-gradient(135deg, 
        rgba(45, 95, 79, 0.08) 0%, 
        rgba(127, 176, 105, 0.08) 50%,
        rgba(45, 95, 79, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

.learning-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(127, 176, 105, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.learning-hero .container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-6xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.learning-hero__container {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--spacing-5xl);
    align-items: flex-start;
}

.learning-hero__content {
    padding-right: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
}

.learning-hero__tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: linear-gradient(135deg, 
        rgba(45, 95, 79, 0.15) 0%, 
        rgba(127, 176, 105, 0.15) 100%);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    border: 2px solid rgba(45, 95, 79, 0.2);
    backdrop-filter: blur(10px);
}

.learning-hero__title {
    font-size: 1.875rem;
    font-weight: 900;
    color: var(--gray-900);
    line-height: 1.3;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.learning-hero__title br {
    display: none;
}

.learning-hero__subtitle {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.4;
    margin-bottom: var(--spacing-2xl);
}

.learning-hero__text {
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.75;
    margin-bottom: var(--spacing-xl);
    max-width: 650px;
}

.learning-hero__buttons {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.learning-hero__buttons .btn {
    padding: 1.125rem 2.5rem;
    font-size: 1.0625rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
}

.learning-hero__tags {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0;
}

.learning-hero__download {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.download-badge {
    display: inline-block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.download-badge:hover {
    transform: translateY(-3px);
    opacity: 0.9;
}

.download-badge img {
    height: 50px;
    width: auto;
}

.category-tag {
    padding: 0.5rem 1rem;
    background-color: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    color: var(--gray-700);
    font-weight: 600;
    transition: var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
}

.category-tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(45, 95, 79, 0.15);
}

.learning-hero__image {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    padding-left: var(--spacing-xl);
    padding-top: var(--spacing-xl);
}

.learning-hero__image .learning-hero__app-download {
    margin-top: 0;
}

.learning-hero__image .app-download__text {
    font-size: 0.8125rem;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-align: center;
}

.learning-hero__image .app-download__buttons {
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    justify-content: center;
}

.learning-hero__image .app-download__btn {
    flex: 1;
    min-width: 0;
}

.learning-hero__cards {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.learning-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background-color: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    border: 1.5px solid var(--gray-100);
    transition: all 0.3s ease;
}

.learning-card:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    border-color: var(--primary-color);
}

.learning-card__icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(45, 95, 79, 0.1), rgba(127, 176, 105, 0.1));
    border-radius: var(--radius-md);
}

.learning-card__content h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.125rem;
}

.learning-card__content p {
    font-size: 0.8125rem;
    color: var(--gray-600);
    margin: 0;
    line-height: 1.7;
}

/* 3つの特徴（シンプル版） */
.features-simple.section {
    padding: 80px 0 60px;
    margin-top: 0;
}

.features-simple__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: 0;
}

.feature-simple__card {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    border: 1.5px solid var(--gray-100);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-simple__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-simple__card:hover::before {
    transform: scaleX(1);
}

.feature-simple__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.feature-simple__icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 50%;
    font-size: 2rem;
    box-shadow: 0 4px 16px rgba(45, 95, 79, 0.25);
}

.feature-simple__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.feature-simple__text {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* 学習カテゴリ */
.learning-categories.section {
    padding: 60px 0;
    margin-top: 20px;
}

.learning-categories .container {
    max-width: 1400px;
}

.learning-categories .section__header {
    margin-bottom: 30px;
}

.learning-categories .section__subtitle {
    max-width: 900px;
    line-height: 1.8;
}

.categories__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.category-block {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl) calc(var(--spacing-2xl) + 20px);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    border: 1.5px solid var(--gray-100);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.category-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.category-block:hover::before {
    transform: scaleY(1);
}

.category-block:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.category-block__header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1.5px solid var(--gray-100);
}

.category-block__icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(45, 95, 79, 0.1), rgba(127, 176, 105, 0.1));
    border-radius: var(--radius-md);
}

.category-block__info {
    flex: 1;
}

.category-block__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.category-block__description {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.8;
    max-width: none;
}

.category-block__content {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.category-block__item {
    font-size: 0.8125rem;
    color: var(--gray-700);
    line-height: 1.5;
    padding: 0.5rem 0.875rem;
    background-color: var(--gray-50);
    border-left: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.category-block__item:hover {
    background-color: rgba(45, 95, 79, 0.05);
    transform: translateX(2px);
}

.category-block__item strong {
    color: var(--gray-900);
    font-weight: 700;
    display: inline-block;
    min-width: 100px;
}

.category-block__tags {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.5rem;
    margin-top: var(--spacing-md);
    overflow-x: auto;
}

.category-block__tag {
    padding: 0.375rem 0.75rem;
    background-color: var(--gray-100);
    color: var(--gray-700);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    border: 1.5px solid transparent;
    transition: var(--transition-base);
    white-space: nowrap;
    flex-shrink: 0;
}

.category-block__tag:hover {
    background-color: var(--white);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.category-block__cta {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1.5px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
}

.category-block__cta-text {
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 600;
    white-space: nowrap;
}

.category-block__cta .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    white-space: nowrap;
    min-width: auto;
    width: auto;
}

/* 料金プランセクション */
.pricing {
    padding: var(--spacing-6xl) 0;
}

.pricing .section__header {
    margin-bottom: var(--spacing-5xl);
}

.pricing__grid {
    gap: 2rem;
    margin-bottom: var(--spacing-5xl);
}

/* CTAセクション */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: var(--spacing-6xl) 0 var(--spacing-5xl);
    margin-top: var(--spacing-6xl);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -25%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

/* FAQセクション */
.faq__container {
    max-width: 900px;
    margin: 0 auto;
}

.faq__item {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition-base);
}

.faq__item:hover {
    box-shadow: var(--shadow-md);
}

.faq__question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition-base);
}

.faq__question:hover {
    background-color: var(--gray-50);
}

.faq__question h3 {
    font-size: var(--fs-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
    flex: 1;
}

.faq__question i {
    font-size: var(--fs-xl);
    color: var(--primary-color);
    transition: var(--transition-base);
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq__answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    font-size: var(--fs-base);
    color: var(--gray-800);
    line-height: 1.8;
}

.faq__answer p:first-child {
    padding-top: var(--spacing-md);
}

.faq__answer p strong {
    color: var(--gray-900);
    font-weight: 700;
}

.faq__item.active .faq__question i {
    transform: rotate(45deg);
}

.faq__item.active .faq__answer {
    max-height: 1000px;
}

/* CTAカード */

.cta-card {
    color: var(--white);
    padding: var(--spacing-3xl) var(--spacing-2xl) var(--spacing-2xl);
    text-align: center;
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.cta-card__title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 1;
    line-height: 1.5;
}

.cta-card__text {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 1;
}

.cta-card__buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-lg);
}

.cta-card__buttons .btn {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.cta-card__buttons .btn-primary {
    background-color: var(--white);
    color: var(--primary-color);
    border: none;
}

.cta-card__buttons .btn-primary:hover {
    background-color: var(--gray-100);
    transform: translateY(-2px);
}

.cta-card__buttons .btn-outline {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.cta-card__buttons .btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

.cta-card__note {
    margin-top: 0;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.cta-card__note i {
    font-size: 1rem;
}

/* レスポンシブ対応 */
@media screen and (max-width: 1024px) {
    .learning-hero .container,
    .learning-hero__container {
        grid-template-columns: 1fr;
        gap: var(--spacing-4xl);
    }

    .learning-hero__content {
        padding-right: 0;
    }

    .learning-hero__image {
        order: -1;
    }

    .features-simple__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .category-block {
        padding: var(--spacing-3xl);
    }

    .category-block__header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

@media screen and (max-width: 768px) {
    .learning-hero {
        padding-top: 120px;
        padding-bottom: var(--spacing-5xl);
        margin-top: 60px;
    }

    .learning-hero .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-4xl);
    }

    .learning-hero__container {
        grid-template-columns: 1fr;
        gap: var(--spacing-4xl);
    }

    .learning-hero__title {
        font-size: 1.5rem;
        line-height: 1.35;
    }

    .learning-hero__subtitle {
        font-size: 1rem;
    }

    .learning-hero__text {
        font-size: 0.875rem;
        line-height: 1.75;
    }

    .learning-hero__buttons {
        margin-bottom: var(--spacing-lg);
    }

    .learning-hero__buttons .btn {
        width: 100%;
    }

    .learning-hero__tags {
        flex-wrap: wrap;
        margin-bottom: var(--spacing-3xl);
        justify-content: center;
    }

    .learning-hero__content {
        padding-right: 0;
        padding-top: 0;
    }

    .learning-hero__image {
        padding-left: 0;
        padding-top: 0;
        order: 2;
    }

    .learning-hero__image .app-download__buttons {
        flex-direction: row;
        gap: var(--spacing-sm);
    }

    .learning-hero__image .app-download__btn {
        flex: 1;
        min-width: 0;
    }

    .learning-hero__download {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }

    .download-badge img {
        height: 45px;
    }

    .learning-card {
        padding: var(--spacing-xl);
    }

    .learning-card__icon {
        font-size: 2rem;
        width: 55px;
        height: 55px;
    }

    .learning-card__content h3 {
        font-size: 1rem;
    }

    .learning-card__content p {
        font-size: 0.8125rem;
    }

    .features-simple {
        padding: var(--spacing-4xl) 0;
    }

    .features-simple__grid {
        gap: var(--spacing-2xl);
    }

    .feature-simple__card {
        padding: var(--spacing-lg);
    }

    .feature-simple__icon {
        width: 60px;
        height: 60px;
        font-size: 1.75rem;
        margin-bottom: var(--spacing-md);
    }

    .feature-simple__title {
        font-size: 1rem;
    }

    .feature-simple__text {
        font-size: 0.8125rem;
    }

    .learning-categories.section {
        padding: var(--spacing-4xl) 0;
    }

    .learning-categories .section__header {
        margin-bottom: 30px;
    }

    .categories__list {
        gap: var(--spacing-lg);
    }

    .category-block {
        padding: var(--spacing-lg) var(--spacing-xl);
    }

    .category-block__header {
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-md);
        padding-bottom: var(--spacing-md);
    }

    .category-block__icon {
        font-size: 2rem;
        width: 50px;
        height: 50px;
    }

    .category-block__title {
        font-size: 1.125rem;
    }

    .category-block__description {
        font-size: 0.875rem;
        line-height: 1.6;
    }

    .category-block__item {
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
    }

    .category-block__item strong {
        min-width: 80px;
        font-size: 0.75rem;
    }

    .category-block__tags {
        gap: 0.375rem;
        margin-top: var(--spacing-sm);
    }

    .category-block__tag {
        padding: 0.3125rem 0.625rem;
        font-size: 0.6875rem;
    }

    .category-block__cta {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-sm);
    }

    .category-block__cta-text {
        font-size: 0.8125rem;
        text-align: center;
    }

    .category-block__cta .btn {
        width: 100%;
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
    }

    .cta-card {
        padding: var(--spacing-5xl) var(--spacing-3xl);
    }

    .cta-card__title {
        font-size: 1.875rem;
    }

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

    .cta-card__buttons {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .cta-card__buttons .btn {
        width: 100%;
    }
}

@media screen and (max-width: 480px) {
    .learning-hero__title {
        font-size: 1.25rem;
        line-height: 1.4;
    }

    .learning-hero__subtitle {
        font-size: 0.9375rem;
    }

    .learning-hero__text {
        font-size: 0.8125rem;
    }

    .learning-hero__image .app-download__buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .learning-hero__image .app-download__btn {
        width: 100%;
    }

    .download-badge img {
        height: 40px;
    }

    .learning-card {
        padding: var(--spacing-lg);
    }

    .learning-card__icon {
        font-size: 1.75rem;
        width: 50px;
        height: 50px;
    }

    .category-block {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .category-block__header {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
        padding-bottom: var(--spacing-sm);
    }

    .category-block__icon {
        font-size: 1.75rem;
        width: 45px;
        height: 45px;
    }

    .category-block__title {
        font-size: 1rem;
    }

    .category-block__description {
        font-size: 0.8125rem;
    }

    .category-block__item {
        padding: 0.375rem 0.625rem;
        font-size: 0.6875rem;
    }

    .category-block__item strong {
        display: block;
        margin-bottom: 0.25rem;
        min-width: auto;
        font-size: 0.6875rem;
    }

    .category-block__tags {
        gap: 0.3125rem;
    }

    .category-block__tag {
        padding: 0.25rem 0.5rem;
        font-size: 0.625rem;
    }

    .category-block__cta-text {
        font-size: 0.75rem;
    }

    .category-block__cta .btn {
        padding: 0.625rem 1rem;
        font-size: 0.8125rem;
    }
}