/* ==========================================================================
   Front Page — SALT × Code Chrysalis × IMA ハイブリッド
   装飾なし・余白で語る・ビジョン先行
   ========================================================================== */

/* ① Hero — テキスト主体、IMA式ビジョン先行
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    position: relative;
    margin-top: calc(var(--header-height) * -1);
    padding-top: var(--header-height);
}

.hero__inner {
    text-align: center;
}

.hero__logo {
    width: 180px;
    height: auto;
    margin: 0 auto var(--spacing-2xl);
}

.hero__title {
    font-size: clamp(2.25rem, 6vw, 5rem);
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    line-height: 1.3;
    margin-bottom: var(--spacing-lg);
}

.hero__sub {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--color-text-light);
    font-weight: 400;
    margin-bottom: var(--spacing-2xl);
}

.hero__scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.hero__scroll-line {
    width: 1px;
    height: 48px;
    background-color: var(--color-border);
    animation: scrollLine 2.5s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* ② Vision — ポエティック、IMA式
   ========================================================================== */
.vision {
    padding-top: 10rem;
    padding-bottom: 10rem;
}

.vision__text {
    text-align: center;
}

.vision__text p {
    font-size: 1.125rem;
    line-height: 2.0;
    letter-spacing: 0.04em;
    color: var(--color-text);
    margin-bottom: 1.5em;
}

.vision__text .vision__break {
    margin-top: 2.5em;
}

/* ③ Challenge — Our Challenge
   ========================================================================== */
.challenge__title {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.challenge__body p {
    font-size: var(--font-size-base);
    line-height: 2.0;
    color: #444;
    margin-bottom: var(--spacing-md);
}

.challenge__body p:last-child {
    margin-bottom: var(--spacing-lg);
}

/* ④ Workshop — Code Chrysalis式カード
   ========================================================================== */
.ws-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.ws-card {
    background-color: var(--color-bg-alt);
    border: 1px solid #E8ECEE;
    border-radius: var(--radius-sm);
    padding: 2.5rem;
}

.ws-card--past {
    opacity: 0.5;
}

.ws-card__duration {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    display: block;
    margin-bottom: var(--spacing-md);
}

.ws-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.ws-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.ws-info {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.ws-info__date {
    font-size: var(--font-size-base);
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.ws-info__price {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* ⑤ Space — SALT式写真で語る
   ========================================================================== */
.space__photo {
    margin-bottom: var(--spacing-2xl);
}

.space__photo img {
    width: 100%;
    border-radius: 0;
}

.space__info {
    margin-bottom: var(--spacing-2xl);
}

.space__name {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.space__info p {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 2.0;
    margin-bottom: var(--spacing-sm);
}

.space__info a {
    color: var(--color-primary);
}

.space__map-placeholder {
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
}

.space__map iframe {
    width: 100%;
    height: 400px;
    border: 0;
}

/* ⑥ Instructor — 写真+テキスト
   ========================================================================== */
.instructor__layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
    max-width: 720px;
    margin: 0 auto;
}

.instructor__photo img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.instructor__name {
    font-size: var(--font-size-xl);
    margin-bottom: 0.25rem;
}

.instructor__role {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.instructor__bio {
    font-size: var(--font-size-base);
    color: #444;
    line-height: 2.0;
    margin-bottom: var(--spacing-md);
}

.instructor__sns {
    margin-top: var(--spacing-sm);
}

/* ⑦ Membership — テキストのみ、シンプル
   ========================================================================== */
.membership__desc {
    text-align: center;
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 2.0;
    margin-bottom: var(--spacing-2xl);
}

.membership__plans {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.membership__plan {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    text-align: center;
    position: relative;
}

.membership__plan--recommended {
    border-color: var(--color-primary);
    border-width: 2px;
}

.membership__plan-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.membership__plan-price {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.membership__plan-price span {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--color-text-light);
}

.membership__plan-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.membership__plan-badge {
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.75rem;
    border-radius: var(--radius-sm);
}

/* ⑧ FAQ — +/- 開閉
   ========================================================================== */
.faq .faq__list {
    max-width: 720px;
    margin: 0 auto;
}

.faq .faq__item {
    border-bottom: 1px solid #E8ECEE;
}

.faq .faq__question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-accent);
    cursor: pointer;
}

.faq .faq__icon {
    flex-shrink: 0;
    font-size: 1.25rem;
    color: var(--color-text-light);
    transition: transform var(--transition-base);
}

.faq .faq__item.is-open .faq__icon {
    transform: rotate(180deg);
}

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

.faq .faq__item.is-open .faq__answer {
    max-height: 300px;
}

.faq .faq__answer p {
    font-size: var(--font-size-base);
    color: #555;
    line-height: 1.8;
    padding-bottom: var(--spacing-md);
}

/* ⑨ CTA Final — IMA式 JOIN US
   ========================================================================== */
.cta-final {
    background-color: var(--color-accent);
    color: var(--color-text-inverse);
    padding-top: 10rem;
    padding-bottom: 10rem;
}

.cta-final__label {
    display: block;
    font-size: 13px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.cta-final__title {
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    color: var(--color-text-inverse);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-final__text {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 2.0;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

.cta-final__next {
    margin-top: var(--spacing-md);
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .hero__logo {
        width: 120px;
    }

    .hero__scroll {
        display: none;
    }

    .vision {
        padding-top: 6rem;
        padding-bottom: 6rem;
    }

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

    .instructor__layout {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .instructor__photo img {
        max-width: 200px;
        margin: 0 auto;
    }

    .instructor__body {
        text-align: left;
    }

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

    .cta-final {
        padding-top: 6rem;
        padding-bottom: 6rem;
    }
}