/* ============================================
   MR. SELLER — PREMIUM COMPONENT STYLES
   ============================================ */

/* Hero Section */
.hero-section {
    padding: 7rem 0 5rem;
    text-align: center;
    background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(62, 216, 211, 0.14), transparent 70%);
    border-radius: var(--radius-lg);
    margin-bottom: 4rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(62, 216, 211, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(62, 216, 211, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 4.25rem;
    font-weight: 800;
    line-height: 1.08;
    margin-bottom: 1.5rem;
    color: var(--color-jet-black);
    letter-spacing: -2px;
}

.highlight-text {
    color: var(--color-signature-turquoise);
    position: relative;
    display: inline-block;
}

.highlight-text::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 0;
    width: 100%;
    height: 14px;
    background: linear-gradient(90deg, rgba(62, 216, 211, 0.25), rgba(62, 216, 211, 0.08));
    border-radius: 3px;
    z-index: -1;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-shadow-gray);
    max-width: 560px;
    margin: 0 auto 2.75rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Large Button Variants */
.btn-lg {
    padding: 0.9rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

/* Secondary Button */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--color-jet-black);
    border: 2px solid var(--color-border-gray);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    border-color: var(--color-signature-turquoise);
    color: var(--color-signature-turquoise);
    background: rgba(62, 216, 211, 0.04);
    transform: translateY(-2px);
}

/* Featured / Grid Sections */
.featured-section {
    margin-bottom: 4rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

/* Cards */
.card {
    background: var(--color-pure-white);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-signature-turquoise), var(--color-turquoise-hover));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(62, 216, 211, 0.12);
    border-color: rgba(62, 216, 211, 0.25);
}

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

.card-icon {
    font-size: 2.75rem;
    margin-bottom: 1.25rem;
    display: block;
}

.card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--color-jet-black);
}

.card p {
    color: var(--color-shadow-gray);
    font-size: 0.93rem;
    line-height: 1.6;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.75s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    opacity: 0;
}

/* Responsive hero */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.75rem;
        letter-spacing: -1px;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
}