/* ═══════════════════════════════════════════
   DataDeep — Applicazioni (Case Studies Listing)
   ═══════════════════════════════════════════ */

/* ─── HERO ─── */
.app-hero {
    padding: 180px 0 100px;
    background: var(--dd-navy);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.app-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(187,49,199,0.06) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 20%, transparent 100%);
}

.app-hero h1 {
    color: var(--dd-white);
    font-size: clamp(2.5rem, 5vw, 4rem);
    max-width: 900px;
    margin: 0 auto 24px;
    position: relative;
    z-index: 2;
}

.app-hero p {
    color: rgba(255,255,255,0.6);
    font-size: var(--font-size-lg);
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
    line-height: var(--line-height-relaxed);
}

/* ─── CASE STUDY CARDS GRID ─── */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    max-width: 1200px;
    margin: 0 auto;
}

.case-card {
    background: var(--dd-white);
    border: 1px solid rgba(10, 10, 40, 0.12);
    border-radius: var(--radius);
    padding: 36px 32px;
    position: relative;
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-smooth);
    display: flex;
    flex-direction: column;
    box-shadow: 0 2px 12px rgba(10, 10, 40, 0.06);
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--dd-gradient-icon);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-smooth);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(10, 10, 40, 0.12);
    border-color: rgba(187, 49, 199, 0.25);
}

.case-card:hover::before { transform: scaleX(1); }

.case-card .case-tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    background: rgba(187, 49, 199, 0.08);
    color: var(--dd-purple);
    margin-bottom: var(--space-4);
    align-self: flex-start;
}

.case-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-3);
    color: var(--dd-navy);
}

.case-card p {
    font-size: var(--font-size-sm);
    color: var(--dd-muted);
    line-height: var(--line-height-relaxed);
    flex-grow: 1;
}

.case-card .case-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--dd-purple);
    text-decoration: none;
    transition: gap var(--duration-fast) var(--ease-smooth);
}

.case-card .case-link:hover { gap: 10px; }

.case-card .case-link svg {
    width: 16px;
    height: 16px;
}

/* ─── STRENGTHS (dark section) ─── */
.strengths-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    max-width: 1100px;
    margin: 0 auto;
}

.strength-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    padding: 36px 28px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--duration-normal) var(--ease-smooth);
}

.strength-card:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(187, 49, 199, 0.3);
    transform: translateY(-4px);
}

.strength-card .strength-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--dd-gradient-icon);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
}

.strength-card .strength-icon svg {
    width: 26px;
    height: 26px;
    stroke: var(--dd-white);
}

.strength-card h3 {
    color: var(--dd-white);
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
}

.strength-card p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

/* ─── FAQ GRID (2 columns) ─── */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
    max-width: 1100px;
    margin: 0 auto;
}

.faq-card {
    background: var(--dd-white);
    border: 1px solid rgba(10, 10, 40, 0.06);
    border-radius: var(--radius);
    padding: 32px 28px;
    position: relative;
    overflow: hidden;
}

.faq-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px;
    height: 100%;
    background: var(--dd-gradient-icon);
}

.faq-card h4 {
    font-size: var(--font-size-md);
    color: var(--dd-navy);
    margin-bottom: var(--space-3);
}

.faq-card p {
    font-size: var(--font-size-sm);
    color: var(--dd-muted);
    line-height: var(--line-height-relaxed);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
    .strengths-grid { grid-template-columns: 1fr; max-width: 500px; }
}

@media (max-width: 1024px) {
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .app-hero { padding: 140px 0 80px; }
    .cases-grid { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; }
}