/* assets/css/case.css
   ------------------------------------------------------------
   - service/front-page.css / member.css の雰囲気を踏襲
   - 導入事例（1件）をシンプルに見せる
   - 色はカスタムプロパティ参照（保守性重視）
   ------------------------------------------------------------ */

/* ============================================================
   0) Tokens (scoped)
============================================================ */
.tm-case {
    --base-color: var(--base-color, #ffffff);
    --text-color: var(--text-color, #0b1f2a);
    --muted-color: var(--muted-color, rgba(11, 31, 42, .74));
    --border-color: var(--border-color, rgba(11, 31, 42, .12));

    --main-color: var(--main-color, #0b6f86);
    --sub-color: var(--sub-color, #0a5670);
    --accent-solor: var(--accent-solor, #0b6f86);

    --container: var(--container, 1120px);
    --gutter: 16px;

    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --radius-xxl: 34px;

    --shadow-1: 0 10px 28px rgba(11, 31, 42, .10);
    --shadow-2: 0 18px 55px rgba(11, 31, 42, .12);
    --shadow-3: 0 26px 85px rgba(11, 31, 42, .16);

    --surface: rgba(255, 255, 255, .92);
    --surface-strong: #ffffff;

    --space-1: 6px;
    --space-2: 10px;
    --space-3: 14px;
    --space-4: 18px;
    --space-5: 1rem;
    --space-6: 1rem;
    --space-7: 1rem;
    --space-8: 2rem;
    --space-9: 5rem;

    --fz-h1: clamp(2rem, 8vw, 3rem);
    --fz-h2: clamp(1.5rem, 6vw, 2rem);
    --fz-lead: clamp(1.1rem, 3vw, 1.35rem);
    --fz-body: 1rem;
    --lh-body: 1.95;

    --scroll-offset: 5rem;
}

/* ============================================================
   1) Base
============================================================ */
.tm-main.tm-case {
    background: var(--base-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.tm-case .tm-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
}

.tm-case .tm-mediaSquare {
    display: none;
}

.tm-case .tm-divider {
    margin: 0 0 var(--space-6);
    height: 4px;
    width: 5rem;
    background-color: rgba(11, 31, 42, .35);
}

/* ============================================================
   2) Hero
============================================================ */
.tm-case .tm-hero {
    position: relative;
    padding: var(--space-8) 0 var(--space-8);
    background:
        radial-gradient(900px 520px at 10% 12%,
            rgba(11, 111, 134, 0.10),
            rgba(11, 111, 134, 0) 60%),
        radial-gradient(720px 520px at 90% 52%,
            rgba(255, 212, 0, 0.10),
            rgba(255, 212, 0, 0) 62%),
        linear-gradient(180deg,
            var(--base-bg) 0%,
            rgba(255, 255, 255, 0.98) 50%,
            var(--base-bg) 100%);
}

.tm-case .tm-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(0deg, rgba(255, 255, 255, .78), rgba(255, 255, 255, .78)),
        repeating-linear-gradient(90deg, rgba(11, 31, 42, .035) 0 1px, transparent 1px 22px);
    opacity: .24;
    pointer-events: none;
}

.tm-case .tm-hero__container {
    position: relative;
    z-index: 1;
}

.tm-case .tm-case__header {
    max-width: 1200px;
    padding: var(--space-7);
}

.tm-case .tm-hero__copy {
    min-width: 0;
}

.tm-case .tm-text--onDark {
    color: var(--text-color);
}

.tm-case .tm-h1 {
    margin: 0;
    font-size: var(--fz-h1);
    line-height: 1.3;
    letter-spacing: -0.01em;
    font-weight: 950;
}

/* ============================================================
   3) Sections / Split
============================================================ */
.tm-case .tm-section {
    padding: var(--space-9) 0;
    background:
        radial-gradient(900px 520px at 10% 12%,
            rgba(11, 111, 134, 0.10),
            rgba(11, 111, 134, 0) 60%),
        radial-gradient(720px 520px at 90% 52%,
            rgba(255, 212, 0, 0.10),
            rgba(255, 212, 0, 0) 62%),
        linear-gradient(180deg,
            var(--base-bg) 0%,
            rgba(255, 255, 255, 0.98) 50%,
            var(--base-bg) 100%);
}

.tm-case .tm-split {
    display: grid;
    grid-template-columns: 3fr 4fr;
    gap: var(--space-7);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.tm-case .tm-split--reverse {
    grid-template-columns: 4fr 3fr;
}

.tm-case .tm-split--reverse .tm-split__media {
    order: 2;
}

.tm-case .tm-split--reverse .tm-split__content {
    order: 1;
}

/* media */
.tm-case .tm-split__media {
    margin: 0;
    position: relative;
    border-radius: var(--radius-xxl);
    overflow: hidden;
    border: 1px solid rgba(11, 31, 42, .10);
    box-shadow: var(--shadow-2);
    background: rgba(255, 255, 255, .88);
    margin: var(--space-5);
}

.tm-case .tm-split__img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    object-position: center;
    transform: scale(1.01);
}

/* content / card */
.tm-case .tm-card {
    border-radius: var(--radius-xxl);
    background: transparent;
    padding: var(--space-7);
}

.tm-case .tm-h2 {
    margin: 0;
    font-size: var(--fz-h2);
    line-height: 1.3;
    letter-spacing: -0.01em;
    font-weight: 950;
}

/* Text */
.tm-case .tm-text {
    margin-top: var(--space-4);
}

.tm-case .tm-text p {
    margin: var(--space-4) 0 0;
    font-size: var(--fz-body);
    line-height: var(--lh-body);
    color: rgba(11, 31, 42, .78);
    font-weight: 500;
    word-break: break-word;
    text-wrap: pretty;
    line-height: 1.7;
}

.tm-case .tm-subhead {
    margin-top: var(--space-6);
    font-weight: 950;
    font-size: clamp(16px, 1.7vw, 20px);
    letter-spacing: -0.01em;
    color: rgba(11, 31, 42, .92);
}

/* ============================================================
   4) Responsive
============================================================ */
@media (max-width: 1080px) {

    .tm-case .tm-split,
    .tm-case .tm-split--reverse {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .tm-case .tm-split--reverse .tm-split__media {
        order: 1;
    }

    .tm-case .tm-split--reverse .tm-split__content {
        order: 2;
    }
}

@media (max-width: 720px) {
    .tm-case {
        --gutter: 14px;
        --scroll-offset: 84px;
    }

    .tm-case .tm-case__header {
        padding: var(--space-5);
    }

    .tm-case .tm-split__media,
    .tm-case .tm-card {
        border-radius: var(--radius-xl);
    }

    .tm-case .tm-card {
        padding: var(--space-5);
    }

    .tm-case .tm-section {
        padding: var(--space-8) 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .tm-case * {
        scroll-behavior: auto !important;
    }
}