/* =========================================================
   Acuaria — AI Hero Section (emphasis principal)
   ========================================================= */

.ai-hero {
    position: relative;
    padding: var(--section-padding-y) 0;
    background: var(--gradient-ai);
    color: var(--color-text-on-dark);
    overflow: hidden;
    isolation: isolate;
}

.ai-hero__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: -1;
}

.ai-hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

.ai-hero__orb--1 {
    top: -20%;
    left: 10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(27, 184, 160, 0.6), transparent 70%);
    animation: floatSlow 14s ease-in-out infinite;
}

.ai-hero__orb--2 {
    top: 30%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.35), transparent 70%);
    animation: floatSlow 18s ease-in-out infinite reverse;
}

.ai-hero__orb--3 {
    bottom: -10%;
    left: 40%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(72, 217, 196, 0.4), transparent 70%);
    animation: floatSlow 20s ease-in-out infinite;
}

.ai-hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(72, 217, 196, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(72, 217, 196, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.8), transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.8), transparent 80%);
}

/* ---------- Header ---------- */
.ai-hero__header {
    text-align: center;
    max-width: 820px;
    margin: 0 auto clamp(3rem, 6vw, 5rem);
}

.ai-hero__title {
    font-size: clamp(2.25rem, 5.5vw, 4.25rem);
    font-weight: var(--font-weight-black);
    line-height: 1.02;
    letter-spacing: -0.035em;
    margin-bottom: var(--space-6);
    color: var(--color-white);
}

.ai-hero__lead {
    font-size: clamp(1.0625rem, 1.8vw, 1.3125rem);
    line-height: 1.65;
    color: rgba(242, 237, 228, 0.85);
    margin: 0 auto;
}

.ai-hero__lead strong {
    color: var(--color-teal-light);
    font-weight: var(--font-weight-semibold);
}

/* ---------- Cards grid ---------- */
.ai-hero__grid-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-16);
}

.ai-card {
    position: relative;
    border-radius: var(--radius-xl);
    padding: 2px;
    background: linear-gradient(180deg, #1BB8A0, #48D9C4 30%, #FF6B35 65%, #1BB8A0);
    transition: transform var(--transition-base);
    will-change: transform;
    transform-style: preserve-3d;
    box-shadow: 0 20px 60px rgba(8, 15, 26, 0.55), 0 0 50px rgba(27, 184, 160, 0.25);
    opacity: 1 !important;
}

.ai-card--featured {
    background: linear-gradient(180deg, #48D9C4, #1BB8A0 30%, #FF6B35 65%, #48D9C4);
    box-shadow: 0 28px 80px rgba(27, 184, 160, 0.45), 0 0 60px rgba(27, 184, 160, 0.3), 0 0 90px rgba(255, 107, 53, 0.15);
    transform: translateY(-8px);
}

.ai-card:hover {
    transform: translateY(-6px);
}

.ai-card__inner {
    position: relative;
    height: 100%;
    padding: var(--space-8) var(--space-6);
    background: linear-gradient(180deg, #0D1B2A 0%, #0a1422 100%);
    border-radius: calc(var(--radius-xl) - 2px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.ai-card__inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(72, 217, 196, 0.6), transparent);
}

.ai-card__badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1) var(--space-3);
    background: var(--gradient-teal);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 20px rgba(27, 184, 160, 0.5);
}

.ai-card__icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(27, 184, 160, 0.2), rgba(72, 217, 196, 0.08));
    border: 1px solid rgba(72, 217, 196, 0.3);
    display: grid;
    place-items: center;
    color: var(--color-teal-light);
    margin-bottom: var(--space-5);
    position: relative;
}

.ai-card__icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle at 30% 30%, rgba(72, 217, 196, 0.3), transparent 60%);
    pointer-events: none;
}

.ai-card__icon--compat {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.2), rgba(27, 184, 160, 0.12));
    border-color: rgba(255, 107, 53, 0.3);
    color: var(--color-coral-light);
}

.ai-card__icon--recommend {
    background: linear-gradient(135deg, rgba(234, 179, 8, 0.15), rgba(72, 217, 196, 0.12));
    border-color: rgba(234, 179, 8, 0.3);
    color: #FBBF24;
}

.ai-card__title {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-extrabold);
    line-height: 1.2;
    margin-bottom: var(--space-4);
    color: var(--color-white);
}

.ai-card__text {
    font-size: var(--font-size-body);
    line-height: 1.65;
    color: rgba(242, 237, 228, 0.75);
    margin-bottom: var(--space-5);
    flex: 1;
}

.ai-card__text strong {
    color: var(--color-white);
    font-weight: var(--font-weight-semibold);
}

.ai-card__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding-top: var(--space-5);
    border-top: 1px solid rgba(72, 217, 196, 0.15);
}

.ai-card__list li {
    position: relative;
    padding-left: var(--space-6);
    font-size: var(--font-size-sm);
    color: rgba(242, 237, 228, 0.85);
    font-weight: var(--font-weight-medium);
}

.ai-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    background: var(--gradient-teal);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(27, 184, 160, 0.5);
}

.ai-card__list li::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 50%;
    width: 8px;
    height: 4px;
    border-left: 2px solid var(--color-white);
    border-bottom: 2px solid var(--color-white);
    transform: translateY(-75%) rotate(-45deg);
}

/* ---------- CTA banner ---------- */
.ai-hero__cta {
    max-width: 920px;
    margin: 0 auto;
    padding: clamp(1.75rem, 4vw, 2.5rem);
    background: linear-gradient(135deg, rgba(27, 184, 160, 0.15), rgba(255, 107, 53, 0.1));
    border: 1px solid rgba(72, 217, 196, 0.35);
    border-radius: var(--radius-xl);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: var(--space-8);
    box-shadow: 0 20px 60px rgba(8, 15, 26, 0.4), 0 0 50px rgba(27, 184, 160, 0.15);
    position: relative;
    overflow: hidden;
}

.ai-hero__cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(72, 217, 196, 0.18), transparent 60%);
    animation: floatSlow 10s ease-in-out infinite;
    pointer-events: none;
}

.ai-hero__cta-content {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    position: relative;
    z-index: 1;
}

.ai-hero__cta-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--gradient-teal);
    display: grid;
    place-items: center;
    color: var(--color-white);
    box-shadow: 0 10px 30px rgba(27, 184, 160, 0.55);
}

.ai-hero__cta-title {
    font-size: var(--font-size-h4);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-white);
    margin-bottom: var(--space-2);
    line-height: 1.25;
}

.ai-hero__cta-text {
    font-size: var(--font-size-sm);
    color: rgba(242, 237, 228, 0.8);
    line-height: 1.55;
    margin: 0;
    max-width: 460px;
}

.ai-hero__cta-buttons {
    display: flex;
    gap: var(--space-3);
    align-items: center;
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}