/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background: #25d366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    z-index: 2000;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    transition: var(--transition);
    animation: whatsapp-pulse 2s infinite;
}

@keyframes whatsapp-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    background: #128c7e;
    color: white;
}

/* Tooltip Style - Exact match for screenshot */
.whatsapp-tooltip {
    position: absolute;
    left: 75px;
    background: #1a1a1a;
    color: white;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 700;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    pointer-events: none;
    display: flex;
    align-items: center;
}

.whatsapp-tooltip::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    border-width: 8px 8px 8px 0;
    border-style: solid;
    border-color: transparent #1a1a1a transparent transparent;
}

.whatsapp-btn:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* About Section */
.about {
    padding: 100px 0;
    background: var(--white);
}

.about-container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-content {
    flex: 1;
}

.about-visual {
    flex: 1;
}

.about-visual img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--primary);
    color: var(--secondary);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 2000;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #666;
    font-size: 0.9rem;
    margin-top: 60px;
}

/* Modal System */
.modal, .modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5000;
    backdrop-filter: blur(8px);
    transition: var(--transition);
}

.modal.active, .modal-overlay.active {
    display: flex;
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 15px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
    max-width: 600px;
    width: 90%;
    animation: modal-slide-in 0.4s ease-out;
}

@keyframes modal-slide-in {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close-modal {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 30px;
    cursor: pointer;
    color: #999;
}

/* Responsive */
@media (max-width: 968px) {
    .navbar {
        padding: 15px 5%;
    }
    .nav-links {
        display: none;
    }
    .header-right .header-email {
        display: none;
    }
    .pricing-grid, .dark-grid, .about-container {
        grid-template-columns: 1fr;
        flex-direction: column;
        gap: 30px;
    }
    .hero-text h1 {
        font-size: 2.5rem;
    }
}