/* ========================================
   ROI / Stats Page Styles
   ======================================== */

/* --- Hero --- */
.roi-hero {
    padding: 160px 0 80px;
    text-align: center;
}

.roi-hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    line-height: 1.15;
}

.roi-hero .hero-sub {
    color: var(--gray-400);
    font-size: 1.15rem;
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Stat Sections --- */
.roi-section {
    padding: 80px 0;
}

.roi-section:nth-child(even) {
    background: linear-gradient(180deg, transparent, rgba(17, 24, 39, 0.5), transparent);
}

.roi-section-header {
    text-align: center;
    margin-bottom: 56px;
}

.roi-section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.roi-section-header .section-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    margin: 0 auto 20px;
    font-size: 1.6rem;
}

.roi-section-header .section-icon.red    { background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(239, 68, 68, 0.05)); color: #ef4444; }
.roi-section-header .section-icon.blue   { background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(59, 130, 246, 0.05)); color: var(--blue-light); }
.roi-section-header .section-icon.green  { background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(34, 197, 94, 0.05)); color: var(--green); }
.roi-section-header .section-icon.amber  { background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(245, 158, 11, 0.05)); color: var(--amber); }
.roi-section-header .section-icon.purple { background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(139, 92, 246, 0.05)); color: var(--purple); }

/* --- Stat Cards Grid --- */
.roi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.roi-card {
    background: var(--navy-card);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.roi-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    padding: 1px;
    background: linear-gradient(135deg, transparent 40%, rgba(59, 130, 246, 0.3), transparent 60%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.roi-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3), var(--shadow-glow);
    border-color: rgba(59, 130, 246, 0.15);
}

.roi-card:hover::before {
    opacity: 1;
}

.roi-stat {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.6rem);
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.roi-stat.red    { color: #ef4444; }
.roi-stat.blue   { color: var(--blue-light); }
.roi-stat.green  { color: var(--green); }
.roi-stat.amber  { color: var(--amber); }
.roi-stat.purple { color: var(--purple); }
.roi-stat.cyan   { color: var(--cyan); }

.roi-card p {
    font-size: 0.95rem;
    color: var(--gray-300);
    line-height: 1.6;
    margin-bottom: 12px;
}

.roi-source {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-500);
    font-style: italic;
    margin-top: 8px;
}

/* --- FAQ --- */
.roi-faq {
    padding: 80px 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.faq-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    background: none;
    border: none;
    color: var(--white);
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    gap: 16px;
    transition: color var(--transition);
}

.faq-toggle:hover {
    color: var(--blue-light);
}

.faq-toggle i {
    font-size: 0.85rem;
    color: var(--gray-500);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-toggle i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
}

.faq-answer p {
    font-size: 0.95rem;
    color: var(--gray-400);
    line-height: 1.7;
}

/* --- CTA Banner (reuse from main) --- */
.roi-cta {
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.05));
}

.roi-cta h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}

.roi-cta p {
    color: var(--gray-400);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .roi-hero { padding: 120px 0 60px; }
    .roi-section { padding: 60px 0; }
    .roi-grid { grid-template-columns: 1fr; }
    .roi-stat { font-size: 1.6rem; }
    .roi-faq { padding: 60px 0; }
    .roi-cta { padding: 60px 0; }
}