/* ================================================
   Case Study Page — Shared Styles
   ================================================ */

/* ---- Back Link ---- */
.case-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    margin-bottom: 2rem;
    transition: color 0.3s;
}
.case-back-link:hover { color: var(--accent); }

/* ---- Hero ---- */
.case-hero {
    padding: 10rem 0 10vh;
}
.case-hero-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}
.case-tag {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #000;
    background: var(--accent);
    padding: 0.35rem 1rem;
    border-radius: 999px;
}
.case-tag-outline {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}
.case-hero-title {
    font-size: clamp(3rem, 8vw, 7rem);
    line-height: 1.1;
    margin-bottom: 2.5rem;
    font-family: var(--font-heading);
}
.case-hero-desc {
    font-size: 1.3rem;
    color: var(--text-muted);
    max-width: 650px;
    line-height: 1.8;
}

/* ---- Cover Image ---- */
.case-cover {
    width: 100%;
    aspect-ratio: 16/10;
    border-radius: 20px;
    overflow: hidden;
    margin: 4rem auto 8rem;
    position: relative;
}
.case-cover-inner {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    transition: transform 8s ease;
}
.case-cover:hover .case-cover-inner { transform: scale(1); }

/* ---- Divider ---- */
.case-divider {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.06);
    margin: 6rem 0;
}

/* ---- Section Label ---- */
.case-section-label {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.5rem;
    display: block;
}

/* ---- Two-column layout ---- */
.case-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
    margin-bottom: 6rem;
}
.case-two-col h2 {
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}
.case-two-col p {
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.9;
}

/* ---- Results Numbers ---- */
.case-results {
    padding: 6rem 0;
    background: radial-gradient(ellipse at center, rgba(44,252,163,0.05) 0%, transparent 70%);
    border-top: 1px solid rgba(44,252,163,0.1);
    border-bottom: 1px solid rgba(44,252,163,0.1);
    margin: 6rem 0;
    text-align: center;
}
.case-results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 3rem;
}
.case-stat-item {}
.case-stat-num {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 6vw, 5rem);
    color: var(--accent);
    line-height: 1;
    display: block;
}
.case-stat-unit {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--accent);
}
.case-stat-label {
    display: block;
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
    letter-spacing: 1px;
}

/* ---- Process Steps ---- */
.case-process {
    margin-bottom: 6rem;
}
.case-process-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 3rem;
}
.case-process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}
.case-step {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    transition: border-color 0.3s;
}
.case-step:hover { border-color: rgba(44,252,163,0.3); }
.case-step-num {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 2px;
    color: var(--accent);
    display: block;
    margin-bottom: 1rem;
}
.case-step h4 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}
.case-step p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ---- Gallery ---- */
.case-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 6rem;
}
.case-gallery-img {
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    background-size: cover;
    background-position: center;
}

/* ---- CTA ---- */
.case-cta {
    text-align: center;
    padding: 8rem 0 10rem;
}
.case-cta h2 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
}
.case-cta p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}
.case-nav-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}
.case-nav-link {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    padding-bottom: 4px;
    transition: color 0.3s, border-color 0.3s;
}
.case-nav-link:hover { color: var(--accent); border-color: var(--accent); }

/* ---- Tech Tags ---- */
.case-tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 3rem auto 6rem;
}
.case-tech-tag {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 0.45rem 1.2rem;
    border-radius: 999px;
    transition: border-color 0.3s, color 0.3s;
}
.case-tech-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ---- Challenge Section ---- */
.case-challenge {
    margin-bottom: 4rem;
}
.case-challenge h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 1.5rem;
    color: #fff;
}
.case-challenge p {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.9;
    max-width: 800px;
}

/* ---- Section Title ---- */
.case-section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 2.5rem;
    text-align: center;
    color: #fff;
}

/* ---- Gallery full-width variant ---- */
.case-gallery-img.full-width {
    grid-column: 1 / -1;
    aspect-ratio: 16 / 9;
}

/* ---- Schema / Hidden SEO ---- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    clip: rect(0,0,0,0);
    overflow: hidden;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .case-two-col { grid-template-columns: 1fr; gap: 3rem; }
    .case-results-grid { grid-template-columns: 1fr 1fr; }
    .case-gallery { grid-template-columns: 1fr; }
    .case-hero-title { font-size: clamp(2rem, 7vw, 3.5rem); }
}
@media (max-width: 600px) {
    .case-results-grid { grid-template-columns: 1fr; }
    .case-process-steps { grid-template-columns: 1fr; }
    .case-hero { padding: 7rem 0 5vh; }
    .case-hero-desc { font-size: 1.05rem; }
    .case-tech-tags { gap: 0.5rem; }
    .case-tech-tag { font-size: 0.72rem; padding: 0.35rem 0.9rem; }
}