/* ================================================================
   5. КНОПКИ
================================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    white-space: nowrap;
}

.btn--primary {
    background: var(--primary-blue);
    color: #ffffff;
}

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(91, 155, 245, 0.4);
}

.btn--secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
    z-index: 0;
}

.btn--secondary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: #ffffff;
    clip-path: circle(0% at 50% 50%);
    transition: clip-path 0.25s ease;
    z-index: -1;
}

.btn--secondary:hover::before {
    clip-path: circle(100% at 50% 50%);
}

.btn--secondary:hover {
    border-color: transparent;
    color: #1a1a2e !important;
}

.btn--small {
    padding: 0.6rem 1.2rem;
    font-size: 0.8rem;
}

.btn--large {
    padding: 1.2rem 2.5rem;
    font-size: 1rem;
}

.btn__arrow {
    transition: transform var(--transition);
}

.btn:hover .btn__arrow {
    transform: translateX(5px);
}