/**
 * JavocSoft Portfolio - Case studies page
 *
 * Uses the theme variables from styles.css (and their dark values from dark.css),
 * so it needs no dark-specific rules beyond the accents below.
 */

.hero-cases {
    background: linear-gradient(135deg, #0f766e 0%, #4f46e5 100%);
}

.cs-section {
    padding: var(--spacing-xxl) 0;
}

.cs-wrap {
    max-width: 920px;
    margin: 0 auto;
}

.cs-intro {
    color: var(--text-2);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

/* Themes index */
.cs-themes {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: var(--spacing-xxl);
}

.cs-theme {
    --cs-accent: #10b981;
    flex: 1 1 260px;
    display: block;
    padding: 1.25rem 1.35rem;
    background: var(--surface);
    border: 1px solid var(--color-light-gray);
    border-top: 4px solid var(--cs-accent);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    color: var(--text);
}

.cs-theme h2 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    margin: 0 0 0.4rem;
    color: var(--text);
}

.cs-theme h2 i {
    color: var(--cs-accent);
    margin-right: 0.45rem;
}

.cs-theme p {
    margin: 0 0 0.75rem;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--color-gray);
}

.cs-theme ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.cs-theme a {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    background: color-mix(in srgb, var(--cs-accent) 14%, transparent);
    transition: background var(--transition-base);
}

.cs-theme a:hover {
    background: color-mix(in srgb, var(--cs-accent) 28%, transparent);
}

.cs-theme.is-ai,
.cs-case.is-ai { --cs-accent: #8b5cf6; }

.cs-theme.is-detail,
.cs-case.is-detail { --cs-accent: #f59e0b; }

.cs-theme.is-reco,
.cs-case.is-reco { --cs-accent: #db2777; }

.cs-theme.is-oss,
.cs-case.is-oss { --cs-accent: #0891b2; }

/* One case study */
.cs-case {
    --cs-accent: #10b981;
    position: relative;
    padding: 2rem 2.25rem;
    margin-bottom: var(--spacing-xl);
    background: var(--surface);
    border: 1px solid var(--color-light-gray);
    border-left: 5px solid var(--cs-accent);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    scroll-margin-top: 110px;
}

.cs-label {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.2rem 0.65rem;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    color: var(--text);
    background: color-mix(in srgb, var(--cs-accent) 16%, transparent);
}

.cs-label i {
    color: var(--cs-accent);
}

.cs-title {
    font-family: var(--font-heading);
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    line-height: 1.3;
    margin: 0.75rem 0 0.35rem;
    color: var(--text);
}

.cs-meta {
    margin: 0 0 1.5rem;
    font-size: 0.9rem;
    color: var(--color-gray);
}

.cs-meta strong {
    color: var(--text-2);
}

.cs-block + .cs-block {
    margin-top: 1.4rem;
}

.cs-block h3 {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    margin: 0 0 0.5rem;
    /* The accent alone is too light for small text on a light surface */
    color: color-mix(in srgb, var(--cs-accent) 70%, var(--text));
}

.cs-block p,
.cs-block li {
    color: var(--text-2);
    line-height: 1.75;
    font-size: 0.98rem;
}

.cs-block p {
    margin: 0 0 0.75rem;
}

.cs-block p:last-child {
    margin-bottom: 0;
}

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

.cs-decisions li {
    position: relative;
    padding-left: 1.6rem;
    margin-bottom: 0.6rem;
}

.cs-decisions li::before {
    content: '';
    position: absolute;
    left: 0.25rem;
    top: 0.68em;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cs-accent);
}

.cs-decisions strong {
    color: var(--text);
}

.cs-timeline {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 2px solid color-mix(in srgb, var(--cs-accent) 40%, transparent);
}

.cs-timeline li {
    position: relative;
    display: grid;
    grid-template-columns: 5.5rem 1fr;
    column-gap: 0.75rem;
    padding: 0 0 0.7rem 1.1rem;
}

.cs-timeline li::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0.6em;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--cs-accent);
}

.cs-timeline time {
    font-weight: 700;
    color: var(--text);
}

/* A screenshot of the product */
.cs-figure {
    margin: 1.4rem auto 0;
    max-width: 560px;
    text-align: center;
}

.cs-figure.is-narrow {
    max-width: 320px;
}

.cs-figure a {
    display: block;
    cursor: zoom-in;
}

.cs-figure img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-light-gray);
    box-shadow: var(--shadow-md);
}

.cs-figure figcaption {
    margin-top: 0.6rem;
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--color-gray);
}

.cs-figure.is-pair {
    max-width: 100%;
}

.cs-figure-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    align-items: start;
}

@media (max-width: 640px) {
    .cs-figure-pair {
        grid-template-columns: 1fr;
    }
}

.cs-figure + .cs-block {
    margin-top: 1.4rem;
}

.cs-status {
    padding: 1rem 1.2rem;
    border-radius: var(--border-radius);
    background: color-mix(in srgb, var(--cs-accent) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--cs-accent) 25%, transparent);
}

.cs-foot {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.6rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--color-light-gray);
}

.cs-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.cs-stack span {
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-2);
    background: var(--color-bg);
    border: 1px solid var(--color-light-gray);
}

.cs-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.cs-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.95rem;
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    border: 1px solid var(--color-light-gray);
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.cs-links a:hover {
    border-color: var(--cs-accent);
    transform: translateY(-1px);
}

.cs-links a.is-main {
    color: #ffffff;
    border-color: transparent;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.cs-outro {
    text-align: center;
    color: var(--color-gray);
    line-height: 1.8;
}

.cs-outro a {
    font-weight: 600;
}

@media (max-width: 640px) {
    .cs-section {
        padding: var(--spacing-xl) 0;
    }

    .cs-case {
        padding: 1.4rem 1.2rem;
        border-left-width: 4px;
    }

    .cs-foot {
        flex-direction: column;
        align-items: flex-start;
    }

    .cs-timeline li {
        grid-template-columns: 1fr;
    }
}