/* ============================================
     BACK TO TOP
     ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--purple-600), var(--purple-700));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-purple);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-purple-lg);
}

/* ============================================
     MODAL
     ============================================ */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 3rem;
    text-align: center;
    max-width: 450px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9);
    transition: var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, #10b981, #059669);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.modal-icon i {
    color: var(--white);
    font-size: 2rem;
}

.modal-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}