/* ============================================
   CASE STUDY PAGE — STYLES
   BayouBuilt Digital
   ============================================ */

/* --- Hero --- */
.cs-hero {
    padding: 10rem 4rem 5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--black);
}

.cs-hero::before {
    content: '';
    position: absolute;
    top: 40%;
    left: 50%;
    width: 800px;
    height: 800px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(201,149,42,0.14) 0%, rgba(201,149,42,0.05) 35%, transparent 60%);
    border-radius: 50%;
    animation: aura-pulse 6s ease-in-out infinite;
}

.cs-hero-inner {
    max-width: 750px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cs-back {
    font-family: 'Space Mono', monospace;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted-dim);
    text-decoration: none;
    transition: color 0.2s;
    display: inline-block;
    margin-bottom: 2.5rem;
}

.cs-back:hover {
    color: var(--teal);
}

.cs-hero-label {
    margin-bottom: 1.5rem;
}

.cs-hero-title {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    color: var(--cream);
    margin-bottom: 1rem;
}

.cs-hero-title em {
    font-style: italic;
    background: linear-gradient(135deg, var(--teal), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cs-hero-location {
    font-family: 'Space Mono', monospace;
    font-size: 0.68rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 2rem;
}

.cs-hero-desc {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    line-height: 1.9;
    color: var(--muted);
    margin-bottom: 2.5rem;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}

.cs-hero-tags {
    justify-content: center;
}

/* --- Highlights bar --- */
.cs-highlights {
    padding: 3.5rem 4rem;
    background: var(--surface);
    border-top: 1px solid var(--teal-border);
    border-bottom: 1px solid var(--teal-border);
}

.cs-highlights-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.cs-stat-num {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--cream);
    line-height: 1;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 30px rgba(201, 149, 42, 0.2);
}

.cs-stat-unit {
    font-size: 1.6rem;
    color: var(--gold);
}

.cs-stat-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.72rem;
    line-height: 1.6;
    color: var(--muted);
}

/* --- Content sections --- */
.cs-section {
    padding: 5rem 4rem;
    background: var(--black);
}

.cs-section--alt {
    background:
        radial-gradient(ellipse 60% 40% at 50% 0%, rgba(201,149,42,0.04) 0%, transparent 55%),
        linear-gradient(180deg, var(--surface) 0%, var(--black) 100%);
}

.cs-section-inner {
    max-width: 900px;
    margin: 0 auto;
}

.cs-content {
    margin-top: 2rem;
}

.cs-content p {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    line-height: 2;
    color: var(--muted);
    margin-bottom: 1.5rem;
}

/* --- Feature cards --- */
.cs-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.cs-feature {
    background: var(--surface);
    border: 1px solid var(--teal-border);
    padding: 2rem 1.75rem;
    transition: border-color 0.3s;
}

.cs-feature:hover {
    border-color: var(--gold);
}

.cs-feature h3 {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cream);
    margin-bottom: 0.75rem;
}

.cs-feature p {
    font-size: 0.85rem;
    line-height: 1.85;
    color: var(--muted);
}

/* --- Tech stack grid --- */
.cs-stack-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5px;
    background: var(--teal-border);
    border: 1px solid var(--teal-border);
    margin-top: 3rem;
}

.cs-stack-item {
    background: var(--surface);
    padding: 1.75rem 1.5rem;
    transition: background 0.2s;
}

.cs-stack-item:hover {
    background: var(--surface-2);
}

.cs-stack-name {
    font-family: 'Space Mono', monospace;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--teal);
    margin-bottom: 0.5rem;
}

.cs-stack-desc {
    font-family: 'Inter', sans-serif;
    font-size: 0.78rem;
    line-height: 1.7;
    color: var(--muted);
}

/* --- CTA section --- */
.cs-cta {
    padding: 6rem 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--surface);
    border-top: 1px solid var(--teal-border);
}

.cs-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(201,149,42,0.10) 0%, transparent 55%);
    border-radius: 50%;
}

.cs-cta-inner {
    max-width: 650px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cs-cta-inner .section-text {
    margin: 0 auto 2.5rem;
    max-width: 100%;
}

.cs-cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   RESPONSIVE — 768px
   ============================================ */
@media (max-width: 768px) {
    .cs-hero { padding: 8rem 2rem 4rem; }

    .cs-highlights { padding: 2.5rem 2rem; }
    .cs-highlights-inner { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }

    .cs-section { padding: 4rem 2rem; }

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

    .cs-stack-grid { grid-template-columns: repeat(2, 1fr); }

    .cs-cta { padding: 4rem 2rem; }
}

/* ============================================
   RESPONSIVE — 480px
   ============================================ */
@media (max-width: 480px) {
    .cs-hero { padding: 7rem 1.5rem 3rem; }

    .cs-hero-desc { font-size: 0.9rem; }

    .cs-highlights { padding: 2rem 1.5rem; }
    .cs-highlights-inner { grid-template-columns: 1fr 1fr; gap: 1.25rem; }
    .cs-stat-num { font-size: 2.2rem; }

    .cs-section { padding: 3rem 1.5rem; }

    .cs-content p { font-size: 0.88rem; }

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

    .cs-cta { padding: 3.5rem 1.5rem; }

    .cs-cta-buttons { flex-direction: column; align-items: center; }
}