@charset "UTF-8";

/* ========================================
   Construction Flow Section - エアコン工事の流れ
   ======================================== */

.construction-flow-section {
    position: relative;
    padding: 80px 20px 100px;
    background-color: #e3f0fb;
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 8px,
        rgba(255, 255, 255, 0.35) 8px,
        rgba(255, 255, 255, 0.35) 16px
    );
    overflow: hidden;
}

.construction-flow-container {
    max-width: 800px;
    margin: 0 auto;
}

/* ========================================
   ヘッダー
   ======================================== */
.construction-flow-header {
    text-align: center;
    margin-bottom: 50px;
}

.construction-flow-header__title {
    font-size: 40px;
    font-weight: 800;
    color: #1e73be;
    line-height: 1.4;
    margin-bottom: 16px;
}

.construction-flow-header__line {
    width: 60px;
    height: 4px;
    background: #1e73be;
    margin: 0 auto;
    border-radius: 2px;
}

/* ========================================
   ステップカード
   ======================================== */
.construction-flow-steps {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.construction-flow-card {
    display: flex;
    align-items: flex-start;
    background: #ffffff;
    border-radius: 16px;
    padding: 32px 36px;
    width: 100%;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.construction-flow-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
}

/* 番号の丸 */
.construction-flow-card__number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: #1e73be;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 24px;
    margin-top: 4px;
}

.construction-flow-card__number span {
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    line-height: 1;
}

/* カード本文 */
.construction-flow-card__body {
    flex: 1;
}

.construction-flow-card__title {
    font-size: 22px;
    font-weight: 700;
    color: #1e73be;
    margin-bottom: 10px;
    line-height: 1.4;
}

.construction-flow-card__desc {
    font-size: 15px;
    font-weight: 400;
    color: #555555;
    line-height: 1.8;
    margin: 0;
}

/* ========================================
   矢印
   ======================================== */
.construction-flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 0;
    color: #1e73be;
}

.construction-flow-arrow svg {
    width: 28px;
    height: 28px;
}

/* ========================================
   フェードインアニメーション
   ======================================== */
.construction-flow-section .fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.construction-flow-section .fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ステップごとにディレイ */
.construction-flow-steps .fade-in-up:nth-child(1) { transition-delay: 0.05s; }
.construction-flow-steps .fade-in-up:nth-child(2) { transition-delay: 0.1s; }
.construction-flow-steps .fade-in-up:nth-child(3) { transition-delay: 0.15s; }
.construction-flow-steps .fade-in-up:nth-child(4) { transition-delay: 0.2s; }
.construction-flow-steps .fade-in-up:nth-child(5) { transition-delay: 0.25s; }
.construction-flow-steps .fade-in-up:nth-child(6) { transition-delay: 0.3s; }
.construction-flow-steps .fade-in-up:nth-child(7) { transition-delay: 0.35s; }
.construction-flow-steps .fade-in-up:nth-child(8) { transition-delay: 0.4s; }
.construction-flow-steps .fade-in-up:nth-child(9) { transition-delay: 0.45s; }
.construction-flow-steps .fade-in-up:nth-child(10) { transition-delay: 0.5s; }
.construction-flow-steps .fade-in-up:nth-child(11) { transition-delay: 0.55s; }

/* ========================================
   レスポンシブ対応
   ======================================== */

@media (max-width: 991px) {
    .construction-flow-section {
        padding: 60px 20px 80px;
    }

    .construction-flow-header__title {
        font-size: 34px;
    }

    .construction-flow-card {
        padding: 28px 28px;
    }

    .construction-flow-card__number {
        width: 50px;
        height: 50px;
        margin-right: 20px;
    }

    .construction-flow-card__number span {
        font-size: 22px;
    }

    .construction-flow-card__title {
        font-size: 20px;
    }

    .construction-flow-card__desc {
        font-size: 14px;
    }
}

@media (max-width: 767px) {
    .construction-flow-section {
        padding: 50px 16px 60px;
    }

    .construction-flow-header {
        margin-bottom: 36px;
    }

    .construction-flow-header__title {
        font-size: 26px;
    }

    .construction-flow-header__line {
        width: 48px;
        height: 3px;
    }

    .construction-flow-card {
        padding: 22px 20px;
        border-radius: 12px;
    }

    .construction-flow-card__number {
        width: 44px;
        height: 44px;
        margin-right: 16px;
        margin-top: 2px;
    }

    .construction-flow-card__number span {
        font-size: 20px;
    }

    .construction-flow-card__title {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .construction-flow-card__desc {
        font-size: 13px;
        line-height: 1.7;
    }

    .construction-flow-arrow {
        padding: 14px 0;
    }

    .construction-flow-arrow svg {
        width: 22px;
        height: 22px;
    }
}